Some help with centrifugal clutch install

That bracket does look pretty wide, let us know how it works out. It looks like you bent your old crank, that looks like a pretty good bend, you were not able to get clearance with that? I just bend mine straight out while still assemble. I don't have a vise to bend it properly, it feels a little weird but tolerable. Installing the CC was easy, bending the crank to get clearance was the hardest part. I suggest anyone who is planning on getting a CC should think about the right side crank clearance before installing. I had to bend at least an inch to get clearance.
 
Oh, no thats the new crank that came with the kit.

I will also post a video of how to install this wide crank kit, because there aren't many instructions, and its not too hard, but I think not everyone might figure it out.
 
geoldr said:
Very nice bikes you've got there man. I like the rear rack gas tank.

If you can find them in your hardware store than yeah go for it
Click to expand...

Thanks, I had put my Giant bike for sale on craigslist and someone wants to buy it for $425. I paid $75 for the bike (found on craigslist)s and $160 shipped for the motor, do you think this is a good sell price? If I sell it of course I will use the money to build another one. Now I'm deciding if I should go with a cruiser or mountain bike. I know I want something comfortable with front suspension and multi gears.
 
Nice. If you think its a fair price you should go for it. I have no idea how much work you put into it. If its just a bolt on kit with no mods, then it seems like a pretty good price. But on the other hand if you've got some other stuff on there, you should charge more. All depends on how you feel about it.

man i really want to sell my gas tank and get the 4L one
 
I have another rear mount gas tank identical to the one on my Raleigh that I was trying to sell for a while on here but no one was interested. I might use it for my next build, I personally don't like the stock tank, it gets in the way when I pedal. My Giant bike, it actually took me 2 days to put together and a lot of hours adjusting and tweaking it, it runs perfect now with the engine dialed in and the chain is adjusted just right. The only mod is I put a new 8mm spark plug wire with NGK spark plug. I think the price is fair. I guess it's time to search on cragslist again for another build.
 
Ok, today I installed the wide cranks. And when I say wide. I mean, wide. Its kinda cool though. The super long bottom bracket is like a foot rest! Not sure if its a good idea, but its comfy. Heres some pics of my bike after the paint and installation.

No front derailleur, no rear either. Single speed. I really enjoy it like this. And since the old derailleur was using a super cheap mounting method, I wasn't always able to use my horizontal dropouts to their full potential. And now I can, and get perfect tension on the bike, and much better on the motorized side too.

The paint is pretty good, for my first time at least. I really like it! Better than that crappy green it was before.
 

Attachments

  • photo.JPG
    photo.JPG
    57.5 KB · Views: 225
  • photo2.JPG
    photo2.JPG
    132.1 KB · Views: 243
Nice job looks good! (^) Does it feel weird pedaling? So is there a way you can add the front rings and use the front derailleur? How much did you pay for that wide crank?
 
It does feel a bit weird to pedal, but I got used to it. I actually enjoy it, because when I coast, I can put my feet flat on those peds and cranks. Really comfy :P The way I see it, no there isn't a way to add your chainrings. Because yours are bolted to the crank. In the pic you see the crank is really far away from the frame, and that's just not going to work. So I don't know if there is a way to add front gearing with these kits.

I got it for 30 at bicycle-motors.com theres a link some posts back
 
Just got done the other day installing the Centrifugal Clutch. With the Bottom Bracket Cartridge 153 mm from SBP that I had already installed, the crank arm just clears the CC cover. A little grinding of the CC to get CC on shaft better. 3 gaskets for other cover. Waiting for paint to dry, had to make a different clutch cover/chain guard for jackshaft sprocket. Here is a short video and pics

ImageShack® - Online Photo and Video Hosting

ImageShack® - Online Photo and Video Hosting

Centrifugal Clutch - YouTube

All is good, she runs great!

Pete
 
geoldr said:
Ok, today I installed the wide cranks. And when I say wide. I mean, wide. Its kinda cool though. The super long bottom bracket is like a foot rest! Not sure if its a good idea, but its comfy. Heres some pics of my bike after the paint and installation.

No front derailleur, no rear either. Single speed. I really enjoy it like this. And since the old derailleur was using a super cheap mounting method, I wasn't always able to use my horizontal dropouts to their full potential. And now I can, and get perfect tension on the bike, and much better on the motorized side too.

The paint is pretty good, for my first time at least. I really like it! Better than that crappy green it was before.
Click to expand...

Hey what size (inch) is that bottom bracket for your crank?
 
Well after running the bike with the CC the other day which went well; tonight I was hearing a rubbing noise from the CC when I let off the throttle and the rpms came down, I don't hear it as I start to increase the throttle. Its late here but will check tomorrow and see whats rubbing. Anyone else have this problem before?

Pete
 
Yeah I have the same issue. When its at idle, its fantastic. start giving it gas, mine rattles and is really loud, but a few seconds after you start rolling quicker, its gone and super smooth.

I havent measure the bottom bracket but heres the pic. So much room.
 

Attachments

  • photo.JPG
    photo.JPG
    80.7 KB · Views: 212
Would you say the bracket is more than 6 inches? Regarding the CC noise, the housing on these things are not perfectly round and does wobble. Mine use to make more noise but now it seems smoother. As long as you have the CC deep inside and tighten, you should be ok. I was trying to find a way to dampen the noise on the cover but I don't think it's possible unless you use really thin material.
 
I grinded it and grinded it, and it still doesnt fit on right. I just said screw it, and put it on as tight as I could. Just got done today actually. Runs fantastic up hills, and yeah I really like it. Ill go measure the bottom bracket

Couldnt get an accurate measurnment, but its something like 11-12 inches.
 
Last edited:
vincent713 said:
Regarding the CC noise, the housing on these things are not perfectly round and does wobble. Mine use to make more noise but now it seems smoother. As long as you have the CC deep inside and tighten, you should be ok. I was trying to find a way to dampen the noise on the cover but I don't think it's possible unless you use really thin material.
Click to expand...

After taking it a part I found the rubbing noise, like you said the "Housing", I see that at idle and when the housing is coming to a stop it is rubbing on one of the pads or whatever they are called that move outward in the housing. I suppose with wear it will smooth itself out.

Pete
 
Yes, the quality control of whoever makes these things are pretty much non existence. In time it does seem to be smoother. I have to say I'm enjoying the automatic clutch, I don't have to worry about pulling the lever to disengage the clutch. This makes it a more carefree and enjoyable ride. .shft.
 
rohmell said:
On some CCs that I have bought, the weight/friction assy. (the part with the spring holding it all together) was easily removed from the rest of the clutch, on some, it just fell off, but on others it held together with a death grip.

I file the rough edges in the egg-shaped hole and the mating surfaces on the bearing shaft so that the the weight/friction assy. is easy to remove once the center screw is removed. This allows easy access to the sprag and bearing surfaces for easy cleaning and lubrication, and also allows you to remove the large replacement cover easily so that you can service the manual clutch.

Doing this allows the bearing shaft with the taper fit to always remain on the crankshaft, so you don't have to keep taking it off and putting it on once it is set to the correct depth so that everything clears the replacement small cover.
Click to expand...

I understand what your talking about, but how do you go about disassembling the clutch so that the gear stays on the shaft? What are the steps to take? From what I can see with the cc on I do see grease on the springs. Thanx for the help Rohmell. Its a learning in progress.

Pete
 
vincent713 said:
Geo, are you able to put on the CC cover?
Click to expand...

No, still not able too. I kept grinding the inside of the CC, but it still doesn't fit. I am worried about grinding it even more, it seems loser than it used to be. I will probably just leave it as is and make a gasket or something to make the cover fit on. But in the meantime, with these super wide cranks, legs are very far away from the spinning CC

How did you guys grind the inside of the CC? dremel tool? With what bit, and how long did it take?
 
Last edited:
You must log in or register to reply here.
Back
Top