New project with a special bike

General Discussion about electric bicycles.
Post Reply
User avatar
stijn13   10 mW

10 mW
Posts: 28
Joined: Sep 23 2013 11:19am
Location: Belgium

New project with a special bike

Post by stijn13 » Oct 31 2013 12:25pm

Hey

i have this bikke already a few years and now i am looking to convert it in to a e-bike.
I would like to put at least 2000W in. 1000W hub at front + a reare 1000W hub motor.

But how if you look at the pictures you see that the bike has no caine.

What do i do?
- Do it anyway and remove the peadels.
- Try to work whit a mid drive e bike kit
- Just sell the bike and buy something els.

Image
Image
Image
Image
Image
Image


Stijn
- Mac 1000W 8T 9Fet 50V 20Ah A123
- Mac 1000W 10T 12Fet 50V 24,5 Ah
- Q11 1000W KU151 50V 17,5 Ah
- BBS2 750W 48V 7,5Ah
- BBS2 750W 50V 15Ah

User avatar
dogman dan   100 GW

100 GW
Posts: 35745
Joined: May 17 2008 12:53pm
Location: Las Cruces New Mexico USA

Re: New project with a special bike

Post by dogman dan » Nov 01 2013 7:15am

Interesting bike, but you sure can't keep the original pedal drive and have a rear hubmotor. I'm not even sure if a typical mid drive could be used, such as the GNG or Cyclone kits.

Your hub has a set of disk holes, is there room for a sprocket there? Without losing your rear brakes? Sprocket on the left seems to me to be your only option.

Or just front hub it, an go KISS.

It would make a great hooligan bike with no pedal drive, and a 3000w rear motor. HS clyte in 20" wheel would have some zing on 72v. You'd rarely want or need to pedal it, but might look illegal.

A fast ebike already obviously illegal even with pedals right?

richmpdx   100 W

100 W
Posts: 141
Joined: May 21 2009 5:14pm
Location: Portland, OR

Re: New project with a special bike

Post by richmpdx » Nov 01 2013 8:16am

That's a rather special and unique bike. Others may disagree, but I wouldn't screw it up by converting to an ebike. Get a much less expensive bike for conversion to an ebike. Best wishes.
Rich

User avatar
gogo   10 MW

10 MW
Posts: 2480
Joined: Mar 17 2008 2:20pm
Location: Iowa USA

Re: New project with a special bike

Post by gogo » Nov 01 2013 8:40am

Sell, that's the worst frame design I've ever seen.
"A conclusion is the place where you got tired of thinking." -Steven Wright

User avatar
MadRhino   100 GW

100 GW
Posts: 7026
Joined: Sep 03 2010 5:28pm
Location: Montreal QC Canada

Re: New project with a special bike

Post by MadRhino » Nov 01 2013 10:48am

richmpdx wrote:That's a rather special and unique bike. Others may disagree, but I wouldn't screw it up by converting to an ebike. Get a much less expensive bike for conversion to an ebike. Best wishes.
Rich
I agree, the bike is rare and you could sell it at a good price. Then, buy a bike that is more suitable to build, expansive or not.
Make it fool-proof, and I will make a better fool.
Current bikes
Street:
Trek Session 10 mod. Variable geometry. 70mph
Dirt:
Santa Cruz V10. 50mph

User avatar
dogman dan   100 GW

100 GW
Posts: 35745
Joined: May 17 2008 12:53pm
Location: Las Cruces New Mexico USA

Re: New project with a special bike

Post by dogman dan » Nov 01 2013 2:12pm

I don't know, the frame does look weak, but maybe it's not in fact. But the funny drive makes it less desirable for anything but a front hub commuter.

I have also given the advice many times, "don't wreck your favorite bike with a motor". But the same may apply, "Don't wreck your weird bike with a motor". Maybe it's weird enough to fetch a nice price from the right person.

User avatar
stijn13   10 mW

10 mW
Posts: 28
Joined: Sep 23 2013 11:19am
Location: Belgium

Re: New project with a special bike

Post by stijn13 » Nov 01 2013 7:07pm

Hey

Thanks for all your opinions

A rear hub motor and keeping the peadeling system is impossible.
The gears are mounted inside rear wheel. So the only option is the front hub motor.

So i will try to sell the bike an buy a less expensive bike for conversion.

Stijn
- Mac 1000W 8T 9Fet 50V 20Ah A123
- Mac 1000W 10T 12Fet 50V 24,5 Ah
- Q11 1000W KU151 50V 17,5 Ah
- BBS2 750W 48V 7,5Ah
- BBS2 750W 50V 15Ah

User avatar
dogman dan   100 GW

100 GW
Posts: 35745
Joined: May 17 2008 12:53pm
Location: Las Cruces New Mexico USA

Re: New project with a special bike

Post by dogman dan » Nov 02 2013 7:31am

A mid drive still possible though. One that uses a bolt on freewheeling front sprocket on the pedals to connect the motor.

User avatar
Drunkskunk   100 GW

100 GW
Posts: 7245
Joined: Apr 14 2007 11:37am
Location: Dallas, Texas. U.S.A.

Re: New project with a special bike

Post by Drunkskunk » Nov 02 2013 10:11am

Neat bike. But I agree, its unsuitable for any kind of conversion. Left side mid drive might be possable, but why put a lefty chain on a chainless bike? And its generaly an epicly bad idea to mount a motor on an aloy fork, especialy a powerfull motor.

Sell it, and get something cheap with a conventional 7 speed rear and no front suspension if you want to run 2 motors.
Buy the ticket, take the ride.
Monster Bike:http://endless-sphere.com/forums/viewto ... =6&t=38667

User avatar
Ch00paKabrA   10 kW

10 kW
Posts: 670
Joined: Mar 15 2013 8:46am
Location: the Jersey Shore, NJ

Re: New project with a special bike

Post by Ch00paKabrA » Nov 05 2013 9:32am

I don't know how good you are with fabricating but that is a cool looking bike and I think it would be awesome to see if you can electrify it. Even though it will not be a strait forward bolt on build, I think you should convert it.

What I would do is weld a sprocket onto the shaft perpendicular to the drive line and then run a mid-drive sideways or rear drive on the other side of the wheel.

Good luck with it.

User avatar
Lebowski   1 GW

1 GW
Posts: 3389
Joined: Jun 28 2011 1:38am
Location: beautiful Zurich, Switzerland

Re: New project with a special bike

Post by Lebowski » Nov 05 2013 9:41am

I would put a hub motor behind the seatpost, above the rear fork.
Get rid of the rear diskbrake and mount a sprocket, run a chain from the motor to this sprocket.
If you mount the motor reverse, you can use a small freewheel on the motor and get a good
reduction to the rearwheel sprocket. It'll be a wheely monster :D Get a bare HS3540 or something similar.

User avatar
gogo   10 MW

10 MW
Posts: 2480
Joined: Mar 17 2008 2:20pm
Location: Iowa USA

Re: New project with a special bike

Post by gogo » Nov 05 2013 1:06pm

OK, I didn't see the little brace above and near the front of the upper rear stays. The brace they used is under compression and would be better placed in front where it would be under tension. But its still a weak design and not worthy of even more stresses.
bad design.jpg
bad design.jpg (63.69 KiB) Viewed 1458 times
"A conclusion is the place where you got tired of thinking." -Steven Wright

EldRick   10 mW

10 mW
Posts: 21
Joined: Sep 08 2013 11:30am
Location: Portland, OR

Re: New project with a special bike

Post by EldRick » Nov 05 2013 1:40pm

The seat looks awfully far back over the contact patch - I'd be concerned about wheelies with a rear-wheel drive of any kind.

User avatar
Zoot Katz   1 MW

1 MW
Posts: 1543
Joined: Jun 21 2008 6:34pm
Location: Vancouver, BC Canada

Re: New project with a special bike

Post by Zoot Katz » Nov 05 2013 8:53pm

Put it in a museum. I'm pretty sure there's not a lot of them. Shaft drives fell out of favour when the roller chain got invented. They've resurfaced from time to time, kinda like the row-bike or step-bike but without the giggle factor.

Steal something steel and keep it real. Starting with a more mainstream design will make your job easier.

dannyboyohyeah   100 W

100 W
Posts: 157
Joined: Dec 29 2009 1:01am

Re: New project with a special bike

Post by dannyboyohyeah » Nov 06 2013 9:21am

Hey~ Pretty cool 20" rig. I wouldn't electrify it, but I might want it in my stable. I had a studebaker once. How much to buy? Where do you live? Or...I could do a part barter for a nice battery enclosure for the bike that you find to build. What's the frame material>?? Thanks & happy trails.

User avatar
stijn13   10 mW

10 mW
Posts: 28
Joined: Sep 23 2013 11:19am
Location: Belgium

Re: New project with a special bike

Post by stijn13 » Nov 06 2013 12:35pm

dannyboyohyeah wrote:Hey~ Pretty cool 20" rig. I wouldn't electrify it, but I might want it in my stable. I had a studebaker once. How much to buy? Where do you live? Or...I could do a part barter for a nice battery enclosure for the bike that you find to build. What's the frame material>?? Thanks & happy trails.
I'm from belgium, for a lot of people on es belgium is not that close. I'm happy to sell the bike for 250€, or we can exchange.
PS me with some pictures of the product that you want to exchange
- Mac 1000W 8T 9Fet 50V 20Ah A123
- Mac 1000W 10T 12Fet 50V 24,5 Ah
- Q11 1000W KU151 50V 17,5 Ah
- BBS2 750W 48V 7,5Ah
- BBS2 750W 50V 15Ah

dannyboyohyeah   100 W

100 W
Posts: 157
Joined: Dec 29 2009 1:01am

Re: New project with a special bike

Post by dannyboyohyeah » Nov 23 2013 11:12am

Very sorry to take so long to reply. But yeah, you're right...Belgium makes the deal a breaker for both of us, I imagine. I'd just keep that little beast as a novelty, but I am not you. Thanks.

Post Reply