Clutch Bushing

[Blazkowiez]

High5 Toystory. I simply took his word for it in my first post, you remembered the cardinal rule of questioning everything said with diagnosing a problem.

We have a very similar thread in progress here.

 

[Bighomedog11]

The pads have nothing to do with this, we're talking about the bushing that the clutch rides on during operation.

The outside of the clutch does look a little rough though. And when i put a different bushing in there it will make a bell sound..

Any my sprocket size is 60t and clutch sprocket is 10t
Back tire is 16x8.0-7 And front tire is 145x70-6

 

[Blazkowiez]

My statement stands that the shoes alone do not wear a clutch, an outside factor causes these issues to happen.

A clutch typically wears out 3 ways:

1. Bushing failure from lack of lubrication or overheating due to excessive friction which can lead back to overloading the clutch in undue fashion. This can involve improper gear ratio, riding the clutch in a manner which leaves the clutch half engaged, or stopping and starting much too often. Clearly holding the gas and brake at the same time can be a leading cause of clutch failure.

2. Spring failure from overheating the clutch, any of the items previously mentioned which overload the clutch can cook the spring which will cause the clutch to make terrible sounds, engage almost immediately, and fail to disengage which can kill the engine and prevent it from starting. This basically leaves your kart acting like direct drive.

3. Sprocket failure can occur for improper aligning your sprockets, having a chain is too tight (can also destroy a bushing) or having a chain that is too lose which will cause the rollers to tear away at the teeth slowly during operation.

There are many other ways that a clutch can die or that you can hurt the clutch but these are the most common problems.

 

[Blazkowiez]

Any my sprocket size is 60t and clutch sprocket is 10t
Back tire is 16x8.0-7 And front tire is 145x70-6

16" is a bit rough on a 60t sprocket. This certainly will not lead to immediately failure but at 72t sprocket would be easier on your clutches. I wouldn't run a kart with that ratio if I wanted my clutches to last very long.

Unlike those people to jump directly from 18-22" tires on a 60t sprocket and a 10t clutch, you have a ratio that will work for a time but will not work for very long.

 

[Bighomedog11]

Oh, I tryed to put a 72t sprocket but they dont have none for my chain a #41

 

[redsox985]

With 40 chain, a 72 tooth would be enormous. You may need a jackshaft. Also, use 40 not 41 because 41 is considerably weaker.

 

[Bighomedog11]

Oh,well my chain is fine the 40.. I really hate to have to buy a jackshaft because they are not cheap.. I am just going to keep oiling the brushing and doing it that way.

 

[Blazkowiez]

The jackshaft shouldn't be too terrible in cost if you save up, consider the investment versus purchasing clutches.

Bearings in blocks, 30$, shaft 10$, sprockets 24$, locking collars 3$.

Assuming you have your own chain thats under 70 dollars at most stores. If you shop around you may be able to get this below 60 with shipping.

 

[Bighomedog11]

Alright, I am going to look around though

 

[redsox985]

I would suggest Northern Tool because this is sprockets, chain, pillow blocks, a shaft, and locking collars. You can't cut too many corners there. Maybe the pillow block bearings but they are high speed.

 

[r97]

a 72t 40 chain sprocket will be approxamatly 11.5" in dia, so if you have 1wd it would be fine, if you have 2wd (live axle) you would also be fine, but you may wish to have a jack-shaft because of ground clearance issues. i#40/41 72t sprocket, but you may not be interested as it cost $56 w/o hub.

 

[Doc Sprocket]

brake shoes alone do not wear a clutch.

I'll definitely agree with that!

 

[redsox985]

A 1' sprocket is huge.