[Mike]

Yes, your Hill Topper kit fits standard bike forks. The kit will fit nearly all bikes with forks that are 100mm apart at the tips (dropouts). Most hybrid, mountain, and comfort bikes fit this profile.

Folding bikes usually have smaller fork widths and smaller wheels (18'' or 20''). Right now we offer our kit in 24'', 26'', and 700C sizes and are considering looking at options to fit the smaller forks and wheels of folding bikes. Please specify your folding bike brand and wheel size in a post and suggest other features you might like. We love to hear what our customers want because it directly effects our new product development.

Sincerely,

Mike
Clean Republic CEO

[Lhotta]

Hi Mike!

My forks are exactly 100 mm at the dropouts so initially I thought all was well. But my front fork is actually a Rock Shox and while the dropouts are 100 mm, the fork gradually tapers as you head up the fork to about 74 mm at its skinniest part which is about 7 inches up from the dropouts.

Does this affect the fit of your kit at all or am I still good to go?

Thanks for your help!

** Bill **

[Mike]

Hi Bill,

If it's a steady slant from 100mm to 74mm at 7 inches then you should be fine. Please stand by for a 'fork slant spacing diagram' to be posted. Until then, this schematic of our motor should help you out. We will use this exact picture when we post the 'spacing diagram' so basically all we'll do is some simple notations.

You can measure your forks with a ruler and then compare your specific situation to this schematic to deduce the distance-from-dropout clearance you'll have.

Electric_bike_kit_motor_diagram_Clean_Republic.png (44.16 KiB) Viewed 12979 times

[bossyman15]

hello I'm interested in buying a kit for my 20" folding bike. i have looked at many different kits and i like yours the best because

1) i think its a good value
2) the battery is small and can be put under my seat. compared to other kits which is huge box! can't fold my bike that way.

this is my bike in question
http://www.citizenbike.com/catalog.asp? ... oduct_id=7

IMHO you are in the best position to sell the kit for folding bike than others are because of battery size.

I would start selling kits for those asap if i were you.

[Mike]

Thanks for the explanation, Carl. Basically, I agree. I don't recall ever having a fork spacing issue at the axle itself. If there is a tight spot on a given bike fork design, it's at a point about an inch up the fork from the axle drop-out. You can use that diagram above to compare the motor to your fork.

The bottom line is if you buy the kit and then have some kind of unsolvable fork installation problem you can give us a call for advice and if nothing else works you can return the kit for a full refund. Like Carl said, this issue is so rare that we can fully back it up with a money-back guarantee, no problem.

Mike

[fbonneau]

Hi!
Is possible to fit tire 700C x28C or 32C.
Do you have black rim?
Is possible to have the anwers ASAP
Thanks
From New York

[Mike]

Hi Fbon,

The tire we include on our 700c rim is "35c" in its width rating. You can easily change this tire and put on your own thinner tire.

So yes, I think you could put your own 28c-32c tire on the standard 700c kit without a big problem.

Cheers,

Mike

[fbonneau]

Hi!
Thank you for the answers.
Do have have a black Rim or is possible to have?
Thanks
Francois

[Mike]

Oh, sorry I forgot to answer about the rim.

We offer silver colored rims as our standard package. For a $39 rim customization fee we can order and custom build you a kit with a black rim, though the lead time would be about 3 weeks from your order payment to the shipping date because we would order these custom parts for you from our supplier. I'd love to figure out a solution for your particular situation, and get you riding electric!

Cheers,

Mike

[bossyman15]

While the Hill Topper is small in dia. it is a wide mtr due to its internal reduction gears & measures 79mm wide.

i just measured my fork width of this bike

http://www.citizenbike.com/catalog.asp? ... oduct_id=7

its 75 or 76 mm wide from the inside of the drop out fork.

[gmcohen1]

I'm thinking about buying one of your kits, and would like to know, can the kit be used on a single-speed cruiser-type bicycle as well as on a MTB? I look forward to hearing from you and the group! My warmest thanks!

[gmcohen1]

Thanks again, Carl! I'll gladly take your expert advice! I'm sure that there are a lot of beach cruiser bikes that can be had very inexpensively from Walmart or Target, as well as from places like Craigslist. And that's the easy part. The HARD part is getting MY WIFE to agree to buy the motor kit for me, maybe for my next birthday, or at least at Christmastime (since I'm now retired, and only she has a job, which in turn, affords me at least a SMALL "allowance")! And WHEN I do get both my bike and my kit (good things ALWAYS take time!), I'm also sure that I CAN live with at least a 12 MPH top speed, given the weight and form of the bike. That speed is STILL at least 4 times faster than plain old walking, and I could (though I'm not sure it's legal in my area) even drive it on the sidewalk for safety (as long as I watch for pedestrians). I can't WAIT to FINALLY delve into the world of electric motorized bicycling, and now, it will be easier than ever, thanks to the CLEAN REPUBLIC HILL TOPPER ELECTRIC BIKE CONVERSION KIT!!!

[TLRWLSN]

hello Mike and everyone

had my hilltopper delivered a couple days ago... have a question about fitting the axle.

the fork dropouts doesnt fit yet...its too small.
stepdad said to replace the fork. Im sure I could get one for cheap.
what should I do? I dont want to return the hilltopper because I really have been looking forward to riding it.

thanks in advance

-tyler

ps sorry picture is so big

[martin75gk]

My bike's fork is 98mm at the tips. These forks are a bit flexible though and can fit 100mm (it would be putting a little pressure on the motor). Is this fine or should the fork be wider?

[Mike]

Hi Marin,

Great question. Yes, you should have plenty of options to fit the hub motor with 98mm on the inside of the tips of the forks. I'll merge this topic with the fork spacing and motor schematic topic since it's a similar question.

Cheers,

Mike

[Mike]

Hi Tyler,

No worries about the large picture. Anything that helps communicate is great!

A very small fraction of forks have a drop-out notch that is just 0.5mm too snug for the motor axle. This can be easily fixed by filing the drop-out notch a very small amount bigger with a simple metal file. This is actually a good situation because it means you will get the best possible fit between your axle and the drop-out which means all the torque of the motor will be transferred into your forks in the most evenly distributed way once the nuts are tightened up very well. I don't think you'll need a new fork.

Will be great to see some pics of your finished install!

Cheers,

Mike

[Mike]

Hey GMC! Lookin forward to some pictures of your e-cruiser. Thanks for sharing your questions!

Mike

[gmcohen1]

What about TRICYCLES? My wife and I are considering a tricycle that we both can share, for exercise (after her impending neck/back surgery), and to go grocery shopping. Does the Hill Topper Kit work for adult tricycles, too? Thanks again!

[Mike]

Hi GMC,

Absolutely. We do have lots of happy Trike customers using our kits. Check out this great picture in our Customer Stories forum: hill-topping-trike-in-tennessee-t112.html

Cheers,

Mike

[nsievert]

I have an EZ Border Biria bike. Are the cables for the Hill Topper Standard Conversion Kit from the front wheel long enough to reach the battery and the handle bars considering the configuration of the Biria.

[nsievert]

I have answered my own question. the cable from the battery to the wheel was long enough so i was then only concerned with the cable from the battery to the handle bars for the switch. I used an 18 black lamp wire and spliced in enough cable to reach and it worked perfectly

Norma Sievert

[kcollins]

I am looking for sensible, economic transportation. I plan on two-way trips no longer than 20 miles (10 miles each way), live in the midwest (flat), do not need to go any faster than 15 mph, weight 240 (plus 35 lb. bike weight, maybe 15 lbs. cargo, and weight of electrical assist system), and have no aversion to pedaling (my other bike is a Lemond road bike). I would like to show up at my destination somewhat free of sweat and not huffing and puffing. I am not looking to just sit on the thing and turn it on, but I would like that option occasionally.

The range of power I see is between 250 watts and 750 watts. It seems to me that 250 watts would be adequate for my needs, and "cheaper" (in terms of power consumption) to use. What am I missing here? Everybody tells me I need at least 500 watts, and a 36 volt 20ah battery. Then along comes your site, with a 250 watt motor and a 24 volt 8 ah battery. I'm guessing get an extra 24 volt 8 ah battery and just go that way. Will that work for me?

Finally, how does the pedaling work while the electric assist is on. In my simple mind you would be "fighting" with the motor. Does the system somehow "magically" work to combine the human power with the electric power for the best of both, allowing me to pedal when I want to (to go faster or to reduce power consumption)? If this is the case, can someone please explain to me how this works?

I am planning on attaching this system onto a Trek 7000 hybrid with a 21 speed drive train, 700 x 35c tires, and a hi-ten steel front fork (sounds perfect to me). I can get up a boogie on that thing, and turn on the assist when I need to mellow things out a bit.

Any advice appreciated.

Thanks,

Kevin

[frank]

all of your questions have already been answered in great detail by Carl in his own Carl's Custom e-Bikes forum..
in my opinion Carl is the only go-to e-bike guru here..so read it all up..it is easy to spot..like over 5000 hits..the
heading is 'watts up with 250w-500w-1000w'..Carl's forum is required reading for all newbies..mike should point that out to all forum readers..before they ask all their questions..as they have all being answered a 1000 times..

[wayne]

hi, i have a sla kit and it is great. thanks for such a wonderful product. i was thinking of buying an electra townie ballon 8D. the tyres are 26" by 2.35. will these fit on the standard rim that came with the hill-topper? can you foresee any problems using such fat tyres? i think the tyres are schwable fat frank. thanking you for any advice. wayne, japan.

[keno]

Hi GMC,

Absolutely. We do have lots of happy Trike customers using our kits. Check out this great picture in our Customer Stories forum: http://www.cleanrepublic.freeforums.org ... -t112.html

Cheers,

Mike

What do you think the top speed and mileage would be on a trike like that? I was worried that the 250w motor might be a bit small for a heavy trike, but am still considering getting a hill topper. Granted, you probably want slower speeds on a trike over a bike, but I wouldn't want it too slow.

[blapin]

Apologies if this question has already been answered, but anyone here have a Clean Republic kit installed on a Dahon folding bicycle?

I'm thinking of purchasing a kit for my Broadwalk S1 to help my commute, and just wanted to get some feedback on compatability with folding bicycles (particularly if wires will get messed up when the bike is folded).

Thanks in advance for any feedback.

[WhiteTiger]

There's a thread at the dahon forums with good info on this. You have to join and sign in to see the pictures of the fellow's warranty voiding mods to spread the front fork.

The HillTopper motor, like most front hub motors is sized for 100mm front forks but the s1 isn't that wide.

Mike at CR has said they are looking at offering thinner motors for folders but as far as I know right now the 100mm is the only HT motor.


Tiger

[jim]

For those who don't read Carl's Custom e-Bikes - he has already covered this topic in great detail. Read it all up in his: 'will the HT fit your bike?' He advises using his business card method - which is very simple and effective. He also states that the Dahons are 3" forks so it won't fit - but the very similar Citizens folders are 4"- so its OK. Jim

[robert1389]

Postby robert1389 » Mon Nov 15, 2010 3:59 pm
I own a 26" Montague Paratrooper folding mountain bike with front disk brakes, Will your conversion kit be compatible with my bike?

Appreciate your reply.

Thanks,
Robert1389

robert1389

[frank]

all your questions have already been answered in detail by Carl at his own custom e-bikes forum here..look it up

[robert1389]

Frank,

I did. No mention of Montague Paratrooper folding bike.

Bob

[frank]

its obviously not practical for clean republic to be installing their hilltopper motor into every conceivabble bike ever made..just so people can have a "list" of bikes the ht motor will or will not fit..after all there are maybe something like a few million different makes and models of bikes ever made from all over the world..since the dawn of bicycles..over a hundred and fifty years ago..bottom line is its up to YOU to determine that for yourself and no one else..if you read Carls last post in his custom e-bikes forum..he covered every single last detail about how to do this..using a simple biz card..actually its t-o-o simple..and that is probably why you overlooked it..

[Jacob]

I think the beauty of a forum is to be able to ask a question, even if it has been asked or answered previously. Many people don't want to be inconvenienced by searching for hours or even weeks to find an adequate answer to their question, when they can just ask and someone who's willing will respond with hopefully the right response they were looking for. Asking questions, can garner more input from the community and build a database of answers that can be referenced later on.

Robert1389's question was legitimate, and maybe someone who does have experience with that particular model and a hilltopper could answer that question for him. Frank, you did point Robert in a direction to Carl's forum that might give insight to his question, but the response comes off hostile and as if you want to close this thread to further leads by others. This does a disservice to everyone in this community. It's obvious that the answer on Carl's forum wasn't sufficient for Robert's specific question. Frank maybe you should refrain from further responses until someone who does have the right answer to Robert's question post's a response. I myself would like to be very active on this forum and ask questions and hopefully get many answers that'll give me insight into a particular problem, not just someone telling me, "it's already been asked. Look it up!"

[dave]

I was browsing the web and found your Clean Republic HillTopper conversion kit which I like because of its 3min installation. My question is will it fit my Sun Streamway 3? The frame is a unisex design meaning there is no top tube and it looks like a big U in the middle with a very low step-up below the bottom bracket. This means the wiring leading to the Hilltopper battery may not reach the round trip from the motor and throttle. I bought this bike because I like the fact that both my wife and I can ride it and its very comfortable to ride. It has a 3 speed coaster brake only. Has any one installed the Hilltopper in this particular bike with no hand brakes? Any help would be most appreciated. Dave

[frank]

your question about the hilltopper for your specific bike app is the same as for any other bike app..it either fits or it doesn't..using carl's simple biz card method..it works and I used it myself..as for the wire question go to carls custom ebikes..you cant miss it with over ten thousand hits..

[robert1389]

Well I issues finding a front disk break setup "narrow enough" to clear the 10mm requirement. Fortunately I have an excellent bycycle shop nearby, "Salem Cycle" in Salem, MA who diagnnosed my problem, found an 8 inch front disk brake setup that fit, wired my bike and I'm flying.

I mountain bike exclusively, and pedal 75-80% of time and rely on the mountain topper for the remainder. Typically, I do a 9 mile loop through three adjacent properties. Well I got to use my new hilltopper this weekend and it was great ! I used it on those steep leg breakers and it was like someone was pushing me up the hill. When I was finished, I still had four lights showing. I hope I get 2000 cycles at this rate.

All in all, I can increase the duration of my trips by a factor of two.

I love my Hilltopper.


Bob

[immyfish]

Well I issues finding a front disk break setup "narrow enough" to clear the 10mm requirement. Fortunately I have an excellent bycycle shop nearby, "Salem Cycle" in Salem, MA who diagnnosed my problem, found an 8 inch front disk brake setup that fit, wired my bike and I'm flying.

I mountain bike exclusively, and pedal 75-80% of time and rely on the mountain topper for the remainder. Typically, I do a 9 mile loop through three adjacent properties. Well I got to use my new hilltopper this weekend and it was great ! I used it on those steep leg breakers and it was like someone was pushing me up the hill. When I was finished, I still had four lights showing. I hope I get 2000 cycles at this rate.

All in all, I can increase the duration of my trips by a factor of two.

I love my Hilltopper.


Bob

Bob, I'll be interested to see how your battery holds up. Others seem to be having issues after a short amount of time. (Is it a cold climate issue? I'm just North of you in NH) Please keep us posted!

[robert1389]

Jimmy,

I did 16 miles on Friday, 6 miles on Saturday, and 9 miles on Sunday. Started with full charge each ride. Ended with 3/4 remaining. I peddle most of the loops, using the hilltopper as an assist only with small hills, maybe 20-25% of time.

Very pleased so far. Will let you know about battery failure should it arrise.

Bob

[guideeditor]

I have a Day 6 Journey bike. WIll the Hill Topper fit OK?

[frank]

your day 6 bike has been posted several times in the past..and it appears to be popular with laid back riders..go to carls forum and look up his very simple biz card method to determine this fit..it appears to fit right in..

[htamme]

I have Dahon folding bicycle, 20'' rim and approximately 75mm fork. Looking for approximately 250W brushless sensorless front wheel hub motor. Any recommendations for me ?

[frank]

your dahon 20in folding bike with 75mm forks will not accept the hilltopper..its made for 100mm forks..your forks are more than one inch too narrow..read all about it at carls custom ebike forum here..its very detailed..

[Drew]

The fork on my bike has a 100 mm clearance, however the fork has shocks that make the tubes consume 10 mill of this distance about 1 inch up from the fort. The Posted Diagram of the motor hub shows the fork clearance however doesn’t show the measurement for the fork where it goes from a flat piece to a tube as well as it doesn’t show how much space is consumed by the tub once it starts. Can you provide detail in this regard?

[jim]

Your question is the same problem for everybody with suspension forks due to the motor's wide construction profile. Read it all up at Carls Custom e-Bikes forum which has more info on this than any other forum I've ever seen. Jim.

[Chris Clean Republic]

It probably does. The issue is the width between each fork. Just as long as the space is no less than 3.9in(95mm) you should be ok. Carl on his forum suggests using the length of a business card as the general width needed. I hope this was helpful. Here is a link to one of our customers with the same type of bike who installed the Hill Topper http://www.electric-bike-kit-forum.com/my-review-of-the-hill-topper-lithium-kit-t90.html

[Chris Clean Republic]

We love the "newbie questions" here, kcollins! First, the riding conditions you describe are about as ideal as exists in the real world (i.e. flat). I can tell you from personal experience that the Hill Topper has saved me from being too sweaty and exhausted at my destination. Here in Seattle many rides are really easy to begin with (downhill) but a total pain coming back up. The Hill Topper has eliminated this obstacle.

The Hill Topper is best describe as an electric assist bike kit. At 250W it's perfect for helping you pedal up a steep hill or coasting on a flat surface when your legs are too tired. Higher wattage systems will turn your bike into an (arguably) inefficient electric motorcycle, plus you'll pay an arm and a leg for them. An extra battery can help prolong how long you can ride. But the Lithium Hill Topper kit sounds like it would work best for the kind of trips you describe without having to charge in between segments.

As for having to fight the motor while pedaling: The Hill Topper is a front wheel system, and your legs power the back wheel. These two power sources do act independent of each other and this allows you some freedom when using the Hill Topper. So you will never be fighting the motor while you are pedaling so you have complete control of when you want the system to be on and using the battery. I hope this clears things up.

Let us now how it goes. And feel free to ask any other questions whenever.

[Chris Clean Republic]

Hey Dave,

Those Sun Streamway bikes seem really comfortable to ride. Anyway as to your questions, the hub motor needs 3.9in (95mm) of space between the inside of your forks to fit on your bike. I would use the method that Carl uses, the length of a business card is approximately the width needed.

As for whether a you can use the Hill Topper without hand brakes. The 250watt motor on the Hill Topper is not powerful enough to overpower the force of the brakes. In fact Mike, the CEO of Clean Republic uses a beach cruiser with a coaster brake on his Hill Topper equipped bike.

I hope this helps.

[Concasl]

Sorry, I posted the question as a new topic..

The bicycle Fork has the min. clearance at the drop down but not sure the 24x1.75 width fit the bicycle 24x1⅜ size?

Tire size 24x1⅜ - same as WheelChair type

Postby Concasl » Wed Apr 20, 2011 7:16 pm
Planning to get the Hill topper Electric Bike kit for my wife's bicycle but it has the same size wheel as WheelChair
Wheels 24x1 ⅜ - 37-540 size. Reading the Tire size spec. it indicated 1.75.

Will the 24" kit fit her bicycle?

Thanks. Happy Easter
Concasl

[Chris Clean Republic]

Hey Concasl,

No worries about the new topic .

The Hill Topper comes with a 1.75" tire, but you can swap this tire out for nearly any of your choosing. I'm fairly certain that the 1 3/8 tire will work well with our rim. I think you should be good to go. Thanks.

[ahowardmd]

Hey guys,

I was just wondering, is there any kind of custom ebike forum that I could look to for answers to my ebike problems?

haha just kidding, but reading through this thread seemed like something out of grade school. ya know, "hey teacher, what does this word mean?" "go look it up in the dictionary, that's what it's there for". "geesh, well it's easier to ask you than go get the dictionary".

[ConnieD]

I have a 20" folding bike from Camping World. I paid less than half the price "on clearance sale". I gave the bike such a good "review" and now it is a much higher purchase price.

http://www.campingworld.com/shopping/it ... bike/37702

I have been looking at electric bike kits, because I am interested in getting up the ridge to rural property without having to use a loud and stinky gas dirtbike.

I have been thinking your kit could work for me.

The measurements of the electric motor has clearance in the existing front fork.

If I did have to change out the front fork, I would have to find out if the front fork I have is threaded or not threaded, uses a star bolt or what, and do I need headset spacers. Either that, or find BMX repair. Maybe a kid near me? The replacement front fork, itself, doesn't have to be expensive.

However, the existing front fork will fit.

Because the Hill Topper Electric Bike Kit does not have a ready-made 20" wheel, I have been thinking maybe the SunRingle BMX Freestyle rim like the Big City or City Light would do the job.

I would use Schwalbe Big Apple 406 2.0 tires, because my intended use is climbing the ridge to rural property.

I suppose I could find a kid's bike with 24" or 26" wheels.

However I am considering torque: smaller wheel diameter - more torque. Right?

I especially like the 20" bicycle because I am short, and so, I can get my feet flat on the ground.

[Chris Clean Republic]

Connie,

Nice bike! Just as long as the front forks have at least 95mm or 3.7in of clearance the hub motor should fit fine. Any rim type you prefer should work great with our hub motor, just as long as there are adequate spokes to support the motor.

Yes a smaller wheel will give you a little more torque, but not as much as most people think. It's a pretty marginal difference, but every little bit helps .

Our ProPack sounds like what you exactly need. Click here for the product page: [url]http://www.electric-bike-kit.com/propacklithium.aspx[url]

Thanks.

[Rinataga]

Hi
I am thinkimg about Brompton to install CR motor. What do you say? does your motor fit to Brompton? any suggestions about? thanks

[Rinataga]

Hi
somebody know about Brompton with Clean Republic Hill Topper installed?
http://www.youtube.com/watch?v=zRcLWPwQvko
is it needed something special? or it is simple - a brompton bike + CR Pro Pack only?

[Chris Clean Republic]

Hey Rinataga,

Yes, I got a chance to take this out for a test ride. It's really fun and slick. One of bike shop dealers here in Seattle put it together. They took one of their Bromptons with 16in wheel, installed a ProPack onto it pretty easily. They did have to use an unusual spoke lacing pattern which only used 24 of the 36 spoke holes on the hub motor. Here is a picture gallery:
https://picasaweb.google.com/cleanrepublic123/BromptonHillTopperSlideShow?authkey=Gv1sRgCI2b0cKY48XHYw&feat=email#slideshow/5616684105462071346

Thanks.

[Rinataga]

great! thanks
there is only one - to get a bromptron. one CR Pro Pack I have

[Chris Clean Republic]

Rinataga,

Sounds good. Let us know what the final product looks like. We always love customer photos. Thanks.

[Rinataga]

Hi Chris
I've just got my Brompton bike from London!
can you pease send me another link to the lacing pattern. I can't view the pictute on you provided link in Picasa gallery? or, can ypu send me the picture to email?
thnak you

[Chris Clean Republic]

Hey Rinataga,

Sure, this is the best pic I could find. I'll give our bike shop dealer who built this a ring and see if they have a better description and pic.

Here's the pic:

[Chris Clean Republic]

Rinataga,

Just got off the phone with the Bike shop dealer who was building Bromptons with the Hill Topper. They didn't have any pictures, but they said they used a rather unusual lacing pattern. The used a radial pattern, so no spokes crossed each other. They also would use 3 spokes then skip a hole, then 4 spokes then skip on each side.

I hope this helps.

[Rinataga]

Thank you, Chris, it really helps
can they say the spokes' size?

[Chris Clean Republic]

Unfortunately they didn't have that bike in stock anymore, and didn't remember the spoke length. Sorry.

[Rinataga]

Hi Chris
I have a "little" problem - the Bromptont's fork size is about 80mm. You said me before that your motor fits to Brompton's fork.

should I make something with my fork to strench it up to 100mm?
what your bike shop dealer did with their Bromptons? pls help!
I have M3 model
thank you

[Chris Clean Republic]

Rinataga,

Aha, I see the problem clearly. Our Seattle dealer that equipped the Hill Topper onto the Brompton did have to spread the forks to fit the Hub motor. We don't have a recommended way of doing this, since it is so unusual of a situation, and there are safety and durability issues that arise by bending or spreading the forks. So, I don't have any really specific steps to help you with this.

Technically it is possible to spread the forks with a variety of mechanical devices or other jerry-rigged setups. Another, likely safer option would be to procure a wider fork. Brompton may even have the necessary part you desire, so I might contact them. It also might be a good idea to get in contact with your local bike shop and ask their expert opinion.

Let me know how it all works out. Thanks!

[Rinataga]

Hi
our bike shops do not do this work.
Chris, I belived you when you said that your motor fits to Brompton, sorry, and I bought the bike and the motor. If you would warned me about an "unusual of a situation", I would find another folding bike.
your quote:
"Postby Chris Clean Republic » Fri Oct 07, 2011 2:50 am
Hey Rinataga,
Yes, I got a chance to take this out for a test ride. It's really fun and slick. One of bike shop dealers here in Seattle put it together. They took one of their Bromptons with 16in wheel, installed a ProPack onto it pretty easily. "
it seemed to me not easy.....
....it is my mistake that I did not ask the Brompton about the fork size......

If your Seattle dealer spread with special instruments, can they say what this is an instrument? or they just has a a wider fork from Brompton...

[Chris Clean Republic]

Rinataga,

We don't have any official recommendation on what type of tools or instruments you should use to spread your forks, or that you even should. I would recommend that you purchase a new fork for this very specific situation. Your bike shop should have a range of fork options either in the store, or they can order it for you. Thanks.

[Rinataga]

Hi Chris
This is what a Brompton Bike Technical Representative said:
"I certainly would not advise cold-setting the fork to 100mm spacing, in the steel fork this would overstress the joint between the fork crown and legs potentially causing a failure and on the titanium fork it might cause a failure of the weld at the top of the leg.
Im afraid we are unable to supply a front fork with 100mm spacing for your electric conversion, though we are working on an electric assist version of the bike which will have a motor designed to work with our 74mm spacing fork."

...I seems I will use my Brompton without motor ....

[Chris Clean Republic]

Hi Chris
This is what a Brompton Bike Technical Representative said:
"I certainly would not advise cold-setting the fork to 100mm spacing, in the steel fork this would overstress the joint between the fork crown and legs potentially causing a failure and on the titanium fork it might cause a failure of the weld at the top of the leg.
Im afraid we are unable to supply a front fork with 100mm spacing for your electric conversion, though we are working on an electric assist version of the bike which will have a motor designed to work with our 74mm spacing fork."

...I seems I will use my Brompton without motor ....

Hey Rinataga,

Sorry for any confusion with this installation. I had forgotten that the Seattle bike shop, Electric Bikes Northwest, had made some major modifications to their Brompton fork when they installed the hub motor. They used specialized tools to bend and reshape the fork, something that we don't recommend, nor does Brompton.

We strive to provide the best technical advice and knowledge to all our customers, but sometimes we may make a mistake. With the thousands of bicycle brands, makes and models, there will be rare occurrences where the hub motor may not be compatible. We strive to clearly communicate the technical specifications of the Hill Topper. It is always important that our customers also check that the Hill Topper will fit their specific bike. The two most important measurements that every customer needs to know in order to install a Hill Topper is their wheel size and the distance between the fork blades at the dropouts.

The Hill Topper is designed to fit the vast majority of bike brands, but there will be rare bikes such as the Brompton Folding bike which utilizes a smaller wheel, non-standard bicycle parts and is designed for specialized use, folding in this case.

Enjoy the Brompton and our apologies for any confusion. Thanks!

[Rinataga]

Thank you Chris
your product is great, no complaints.
BTW the Brompton Bike Technical Representative also mentioned about eBrompton they are introducing this summer.

[Chris Clean Republic]

A quick note to all of our customers.

We are more than happy to offer technical advice on custom wheel builds with our products. However, we cannot take full responsibility with any installation difficulties that you may encounter. We can only do so much through an internet message board. If you are having difficulty getting a custom installation finished, we can offer a full range of remote help through this board, email or phone communication, but nothing beats face to face support. We recommend asking a local bicycle shop for help in some situations.

Custom wheel builds using the Hill Topper electric hub motor can be a great way to fit our system to your custom rim or bicycle. As noted we are willing to help with technical advice, but we cannot be held responsible for any wheel failure if a non- Clean Republic built wheel is used. Using less than the recommended 36 spokes with our motor is technically possible, but we recommend consulting a certified wheel builder first before attempting this on your own. Thanks!

[Rinataga]

Hi all
I made my eBrompton
if was not so difficult as expected
http://youtu.be/pORUdE1QdII

[Chris Clean Republic]

Rinataga,

Nice work!!! What was your solution to the fork problem?

[Rinataga]

Chris
my English is not good so it is diffucult to me to explain the details. I used a piece of wood, a hummer and a gripe,
it took less than a hour.
the result is that the fork has a little indentations in inner sides, not visible from outside. the painting was not damaged. the metall of the fork is not hard. I shortened the cables form the battery and the motor, as they hinder folding and snap the handlebar.
the bike folds as earlier.

[Chris Clean Republic]

Feel free to post any pictures of this project if you like.

[daunpinus]

I've also just finish my ebrompton and I already post it in this forum :
finally-able-to-fit-in-brompton-t431.html

Just need a little modification on Fork, its easy to find the the Bike Workshop that can do that..
I've also publish the guidance on my blog http://www.ermil.net/2012/05/brompton-transformation-into-ebrompton.html

Rgds
Ermil
Bali - Indonesia

[Chris Clean Republic]

Hi Ermil,

Thanks for sharing. This is great!