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Old September 29th, 2008, 06:00 PM   #41
mikesova
My 4x4 is a Subaru.
 
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A local man was killed while riding a motorized bicycle. So I'm definitely going to invest in one of these:

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Old September 30th, 2008, 11:00 AM   #42
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coming along nicely
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Old October 1st, 2008, 02:22 PM   #43
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80cc Schwinn canceled due to a narrow crank that won't accept the engine. Replace title with 80cc Giant Mountain Bike. :) Bummer, it looked really cool with an engine + tank.
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Old October 1st, 2008, 02:45 PM   #44
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80cc Schwinn canceled due to a narrow crank that won't accept the engine. Replace title with 80cc Giant Mountain Bike. :) Bummer, it looked really cool with an engine + tank.
Bullshit.

There's gotta be a way to do it - post some pics and let us help you get it finished.
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Old October 1st, 2008, 02:58 PM   #45
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What's the deal? Does the crank arm hit the motor? The bottom bracket housing shouldn't have anything to do with it.
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Old October 1st, 2008, 03:30 PM   #46
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What's the deal? Does the crank arm hit the motor? The bottom bracket housing shouldn't have anything to do with it.
yes, the crank arms are hitting the engine. I'm going to try to find another bike with a wider crank. i'd really prefer to stick with a cruiser style bike. It's an old schwinn so I can't just pull a crank out of any bike. I could cut and weld the crank arms, but I don't really wanna do that with my grandpa's bike.
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Old October 1st, 2008, 03:45 PM   #47
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yes, the crank arms are hitting the engine. I'm going to try to find another bike with a wider crank. i'd really prefer to stick with a cruiser style bike. It's an old schwinn so I can't just pull a crank out of any bike. I could cut and weld the crank arms, but I don't really wanna do that with my grandpa's bike.

You already painted Maltese crosses on it....break out the torch
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Old October 1st, 2008, 04:11 PM   #48
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Any idea what the threads are like on the BB shell?

I haven't messed around with many old bikes like this. Is there any chance that the thread pattern is similar to a modern bottom bracket, where you could use a wider BB. Nevermind. I just realized that this is a loose bearing assembly. None of the shell is threaded.

Being a steel frame, you could potentially weld in a modern, english threaded MTB or Road Bottom Bracket Shell, and just use modern parts. I've never seen someone do that before, but that doesn't mean that it can't be done. Also, since this is a single speed bike, it greatly widens your margin of error, versus using a front derailleur.

The road I'd take, would be to get another set of crank arms and start hacking on those. If it doesn't work, you still have grampy's arms to run as a plain old bike.

... sorry. I like bikes ...
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Old October 1st, 2008, 09:35 PM   #49
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Any idea what the threads are like on the BB shell?

I haven't messed around with many old bikes like this. Is there any chance that the thread pattern is similar to a modern bottom bracket, where you could use a wider BB. Nevermind. I just realized that this is a loose bearing assembly. None of the shell is threaded.

Being a steel frame, you could potentially weld in a modern, english threaded MTB or Road Bottom Bracket Shell, and just use modern parts. I've never seen someone do that before, but that doesn't mean that it can't be done. Also, since this is a single speed bike, it greatly widens your margin of error, versus using a front derailleur.

The road I'd take, would be to get another set of crank arms and start hacking on those. If it doesn't work, you still have grampy's arms to run as a plain old bike.

... sorry. I like bikes ...

That's what I'm talking about. Spend some cash, buy a threaded BB shell and have it brazed on. Most bikeshop would be able to order one for you.

Looky: Machined BB sleeves
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Old October 1st, 2008, 10:01 PM   #50
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yeah...I'm going to try to find another crank...I don't want to mount it on mountain bike, it's too busy with all the shifters and stuff.

what about something like this:

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Old October 1st, 2008, 10:26 PM   #51
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ok, you have this: http://www.sheldonbrown.com/opc.html

You need this: http://sheldonbrown.com/harris/opc.html (scroll down to Bulletproof American-to-Euro Conversion kit)

Then you just need a bottom bracket, and a crank..
Get a gereric Shimano UN-53BB with a wide spindle, and then a cheap Square Taper crankset.

Done.
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Old October 1st, 2008, 11:22 PM   #52
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We made 3 on those frames. The last one we made we managed to bust out in a couple hours.
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Old October 2nd, 2008, 08:23 AM   #53
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All of those pictures should have the same problem. Old, narrow bottom brackets.

Did you try emailing the manufacturer to see if they had any recommendations. They might have been through this before.

Also, I saw on of these kits in Fenton last night. It was on a full suspension mountain bike. I didn't get a good look at it though.
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Old October 2nd, 2008, 08:25 AM   #54
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How about something a little more aerodynamic?

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Old October 2nd, 2008, 12:31 PM   #55
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How about something a little more aerodynamic?

lol. $200 motor on a $7000 bike.
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Old October 2nd, 2008, 05:55 PM   #56
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Flat fender: I don't know that much about this, could you hook me up with a shopping list w/ links?
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Old October 2nd, 2008, 06:42 PM   #57
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Flat fender: I don't know that much about this, could you hook me up with a shopping list w/ links?
http://harriscyclery.net/itemdetails.cfm?ID=2819

Start with that and PM me your address - I'll send you a bb and crankset.
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Old October 2nd, 2008, 08:06 PM   #58
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that stingray is awesome
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Old October 3rd, 2008, 08:41 AM   #59
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http://harriscyclery.net/itemdetails.cfm?ID=2819

Start with that and PM me your address - I'll send you a bb and crankset.
no shit...well, ok, I guess I gotta do it then...thanks scooter! I need to buy you a few beers.
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Old October 3rd, 2008, 08:47 AM   #60
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but, I'm still going to need to change out the rear chain ring too right? where do i get that?
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