comet clutch Driven pully

[jeffm352]

The Driven Pully does it matter what way it goes on? can the spring be facing left or right. i can only fit it with the spring to the left if your standing behind the cart.i was told its reversable but want to make sure before i make my jackshaft plate.thanks

 

[residentg]

it does matter - do you know if it is a 20, 30... What color is the spring?

 

[freakboy]

if bolth edges look like this \/ it dont matter but if they look like this \| it does matter.

 

[jeffm352]

if bolth edges look like this \/ it dont matter but if they look like this \| it does matter.

its a 44 series 8-1/2 outer diameter and both sides look like this \/ the spring is red

 

[residentg]

here is a link to the comet 40-series manual, it looks like it does matter:

http://www.gopowersports.com/Comet/40series.pdf

Front of Kart

<| Driver
..|> Driven

the pullies are opposite of each other

 

[jeffm352]

that aint what i wanted to here. now im back to square one. the motor is a monster just no room.but i will figure it out one way or another. i will be mudding in no time.i hope lol

 

[residentg]

I recall someone telling me that the wind of the spring determines the correct direction of the pulley spin. Maybe Comet has such a spring, might be worth giving them a call and asking.

Maybe a yellow series 30 spring would do the trick, I never looked, but maybe...

 

[toofarnorth]

I think they mount opposit like that so the belt dosen't get missaligned as it engages. If you think about how they work, the belt gets sucked up closer to the engine as rpms go up on the driver pulley but on the driven pulley the belt would get pushed further away if the spring was on the left. They get around that problem with the 30 series because the stationary sheaves are almost flat so the belt moves very little as it goes from idle to full engagement. I think on sleds the driven pulley slides back and forth on the shaft so it's always aligned. If that's the way the 40 series is then belt alignment shouldn't be a problem.

 

[jeffm352]

I think they mount opposit like that so the belt dosen't get missaligned as it engages. If you think about how they work, the belt gets sucked up closer to the engine as rpms go up on the driver pulley but on the driven pulley the belt would get pushed further away if the spring was on the left. They get around that problem with the 30 series because the stationary sheaves are almost flat so the belt moves very little as it goes from idle to full engagement. I think on sleds the driven pulley slides back and forth on the shaft so it's always aligned. If that's the way the 40 series is then belt alignment shouldn't be a problem.

I think its going to work im going to try it. if it dont then i will go the other way

 

[residentg]

can you post some pics?

 

[jeffm352]

this is how it is now.i cant put it in front of the motor just no room i would have to butcher my frame to fit.so im just moving it back to the side of the motor with the clutch spring facing to the left. if they got to go to the right i got to cut the round bar out to fit i all ready cut the square bar out and i think that would weekin my frame to much if i cut the roung bar out. im realy stuck on this one.i wish i would or got the 7-1/2 clutch not the 8-1/2 clutch that would of gave me atleast one nore inch to work with

 

[residentg]

Well, it is clear now. The driven pully was designed to be attached to a jackshaft, which then would drive the chain to the axle. This provides the necessary gear resuction, and clearances. Your set-up will not work as is, you will just melt belts. There was another thread on this resently, someone had the same issue.

http://www.diygokarts.com/vb/showthread.php?t=4805

Your axle is not really strong enough. I am guessing that it is a 3/4" because your hubs are 3/4". If that is the case, you should be using a step-down axle which is 1" thich, except at the ends where it steps down to 3/4" to fit 3/4" hubs. I would take the rear axle and engine off and sort it all out.

 

[jeffm352]

Well, it is clear now. The driven pully was designed to be attached to a jackshaft, which then would drive the chain to the axle. This provides the necessary gear resuction, and clearances. Your set-up will not work as is, you will just melt belts. There was another thread on this resently, someone had the same issue.

http://www.diygokarts.com/vb/showthread.php?t=4805

Your axle is not really strong enough. I am guessing that it is a 3/4" because your hubs are 3/4". If that is the case, you should be using a step-down axle which is 1" thich, except at the ends where it steps down to 3/4" to fit 3/4" hubs. I would take the rear axle and engine off and sort it all out.

ye i know that that was my post i cant go to a 1 inch axle cost to much.and i do know i need a jackshaft im working on the design now.i got the jackshaft all i wanted to know if the driven clutch is reversable on the jackshaft.but i get the feeling that it aint so im going to have to cut a knoch out of my frame to fit the driven pully in there the right way.the chain and sprocket will go just where it allways was suppost to go on a carter gokart on the outer hub next to the tire and by the brake band.i will post more pics later so you can see how its going to work. im about as far as i can go today till work tomorrow i need to cut some spacers on the plas table

 

[jeffm352]

ok this is what i come up with it looks pretty good to me . I just need to stiffin up the frame but that aint no problem. I will just put an extended bumper on it.and i will half to put a spacer on the sprocket to get it away from the frame it looks pretty tight right now i have not tryed it yet though. the way my lucks going the chain will hit the frame.

 

[toofarnorth]

That looks great, the only thing I'd recommend you change would be to move the pillow block closer to the pulley so it puts less stress on the jack shaft and maybe redirect your exhaust away from your belt if at all possible or maybe heat wrap it. Is that the proper distance between your crankshaft and jack shaft for that belt? It's hard to see in the pic but make sure the driven pulley isn't going to contact anything when it's in the open position someone else on this forum had that problem.

 

[jeffm352]

thanks yes i can move the block over a little bit more. and the belt is real close to the right size i might have to move the motor just a pinch. changing the exaust is still on my list i just wanted to get the cart rolling first. changing to a 1 inch axle is on my list to.i was told the 3/4 aint going to hold up

 

[residentg]

wow - nice solution!

 

[Marvinsanti]

I saw the progress of your project and now you are headed in the right direction. The 44 series tc is a very nice clutch but like toofarnorth said you'll need to move the exhaust away from the belt or it will get fried. Here are some pics of my TC setup, it might help you a bit.