2020 coleman bk200 help

[Brian.lars]

Sorry for a late update but I been busy with work. So I need to remove this piece and then what do I look for?

 

[Denny]

Remove the bolt from the center is step 1. It should slide off the shaft then. You might have to use a few gentle taps from a hammer. Remember GENTLE is the key word.

 

[panchothedog]

Did you bother to watch any videos on how to service and clean a torque converter driver clutch. There are dozens of them. You know how they say a picture is worth a thousand words, well a 6 minute video is probably worth about six thousand words. You now know the part that needs servicing, watch the video's and help yourself a little. Then if you can't figure out a certain point post a picture of where you are stuck. You shouldn't have to keep asking whats
next. That's the whole point of the video's. Some of them are very explanatory,
and the innards of the clutches not all that complicated.

 

[Brian.lars]

The clutch came right off. But before I start taking the clutch apart, everyone agrees that this clutch is ****ed up and needs cleaned or repaired? I'm gonna have to buy a clutch compressor or something to help with the disassembly. Or Is it worth upgrading? I don't know anything about this type of stuff to know if it's bad or not. I'm going by what you guys are advising me to do.

 

[Denny]

1000% needs cleaned atleast! Get the old belt material off the shieves completely!

 

[Brian.lars]

So do I need to disassemble the whole thing or can I use carb cleaner and compressed air and then wipe it off?

 

[Denny]

Take it apart you should be able to compress the spring with your hand. Don’t be afraid. And then you might as well do the rear one also.

 

[Brian.lars]

These little guys still good? Some flat spots on them.

 

[Rat]

You shouldn't have to keep asking whats
next. That's the whole point of the video's. Some of them are very explanatory,
and the innards of the clutches not all that complicated.

These little guys still good? Some flat spots on them.

Clearly you didn't get the memo Pancho issued.
Those roller weights are supposed to have flat spots AFAIK. I do know that some are even lobe shaped like a cam

 

[Denny]

Those rollers should be replaced. There are all kind of nicks and groves on them. Check also where they ride. If it is not smooth you may be better off buying a new clutch.

 

[panchothedog]

Brian, the innards of your clutch are very different than that of a regular series 30 . Couple of questions. Did you find a video for your style of clutch? Your engine is called a GY6 and I am going to assume they all have the same kind of clutch. Put that in your search GY6. Also do you have a source for clutch parts?
I have a 40 series clutch ( bigger clutch for a bigger engine ) on one of my karts and inside it is more one yours. It has rollers that fit in a channel similar to yours and the principal is with increased rpm the rollers are forced outward pushing on the angled sheave forcing it to close, thus increasing the diameter and changing the gear ratio. RLS Underground seems like a pretty sharp fellow, but
I don't know why the rollers would have flat spots on them. That would seem like a cause for them to stick. Important. Do all the flat spots look identical, like they were manufactured or machined that way, or do they look random and caused by wear. Also if you were to find a video on this style of clutch I would think it should address that issue.

 

[panchothedog]

Also on the outer cupped part you can see what almost looks like adhesive or some sort of goo or maybe it's just wear. Anyway that needs to be cleaned up as well as the channels that the rollers ride in. Cleaned up means sanded with some medium grade sandpaper and then smoothed or sort of polished with some 400 grit wet and dry sandpaper.

 

[Rat]

Brian, the innards of your clutch are very different than that of a regular series 30 . Couple of questions. Did you find a video for your style of clutch? Your engine is called a GY6 and I am going to assume they all have the same kind of clutch. Put that in your search GY6. Also do you have a source for clutch parts?
I have a 40 series clutch ( bigger clutch for a bigger engine ) on one of my karts and inside it is more one yours. It has rollers that fit in a channel similar to yours and the principal is with increased rpm the rollers are forced outward pushing on the angled sheave forcing it to close, thus increasing the diameter and changing the gear ratio. RLS Underground seems like a pretty sharp fellow, but
I don't know why the rollers would have flat spots on them. That would seem like a cause for them to stick. Important. Do all the flat spots look identical, like they were manufactured or machined that way, or do they look random and caused by wear. Also if you were to find a video on this style of clutch I would think it should address that issue.

His clutch isn't a Comet at all, you called it at GY6

No goo, rust. There are dry clutch compound shoes on his flyweights.

It's a whole different animal than a Comet 30 or 40. The rollers in his only assist in keeping even pressure on the sheave when the fly weights go out best I can tell.

Ultimately it's the dry clutch material on the flyweighs that does the heavy work of making the machine move.

This Chinese GY6 125/150 has the lobed rollers I was referring to as well which is only similar to his clutch. Definitely not it because this one operates more closely the way a Comet 30 does without friction compound shoes o. The weights like this one does.
Superfly Gy6 150 whis is probably his exact clutch

 

[panchothedog]

Looks like the solution to his problem. GREAT LINK.

 

[Brian.lars]

Does anybody here have this same gy6 and clutch?

 

[Brian.lars]

Got it apart and noticed these pieces are damaged. What's the name of these pieces?

 

[Brian.lars]

Nevermind. Realized it's not suppose to be separated. I ordered a new one. This is starting to remind of me of my old project car, 1 thing after another but this is cheaper so far

 

[Wes1988]

What size is belt on bk200

 

[Brian.lars]

Here's the numbers

 

[Karttekk]

Those roller weights are supposed to have flat spots AFAIK. I do know that some are even lobe shaped like a cam.

There are rollers designed with flat spots and some that aren't. Stock rollers aren't usually flat but there are aftermarket ones that are like these.

Here are some stock roller weights.

KOSO Clutch Rollers 18x14 for 150cc, GY6 - FJ404130, FJ404125, FJ404140

Koso X-Power High-Performance Roller Weights for GY6

hammerheadperformance.com