Driver is getting jammed.

[950speed]

Hello all,
On my 30 series comet the driver keeps getting jammed or something. When I slow down the engine stalls and then when I go to start it back up the kart lurches forward. And then the driver seems to disengage. The weights and case are original however I replaced the springs with new ones(blue) about a month ago.

Any suggestions?

Also what does overdrive actually do in these units? I’ve never learned and can’t find anything on it.

 

[landuse]

Have you taken the thing apart for some service, or to see if you can visually see any problems?

 

[JTSpeedDemon]

Sounds like the driver weights are sticking somehow to me, so it doesn't want to disengage, which would cause the stalling and lurching.
My 2c.

 

[J.S.@SMS]

When was the last time you serviced it (dry graphited the inside of the driver)? Also, the over drive acts the same as the overdrive in a car transmission. It makes the output turn faster than the input. So theoretically when the engine is at 3600 rpm and the driver is fully open, the driven and output shaft are turning approximately 4000 rpm.

 

[950speed]

The last time I serviced it and did a cleaning was when I replaced the springs, and yes I did put new dry lube on it.

 

[Nosandwich]

See if you can get a different driver....maybe Uber?

 

[JTSpeedDemon]

^^BWAHAHAHAHA!!!!

 

[BigWes]

Check to see if your bushing is slipping into the sheave and causing it not to return to a full neutral state...

I brought this concern up in a recent thread. Identical issue kept reccuring. If it's the same problem you will need to replace your brass bushing that the belt rides on, it's cheap though. If you look at my thread where I say "get in here Spunkbrothers" you will see where I mention the issue...

Clean it as prescribed, check the bushing for jamming...good luck!

 

[950speed]

There is currently no bushing on it, it broke a few rides ago. I’ve needed to order a new one soon.

 

[BigWes]

There is currently no bushing on it, it broke a few rides ago. I’ve needed to order a new one soon.

Well then, get that bushing replaced, do a proper clutch service and lube as described by previous posters, and you should be back in business. Just realize that those bushings were installed for a reason...if you are running without it installed then you are wrong.

---------- Post added at 09:44 PM ---------- Previous post was at 09:41 PM ----------

Also make sure your idle speed isn't adjusted too high as well.

 

[950speed]

Okay, so I was taking a look at the weights and they seem to have worn outside the area that it is designed to rub. As in outside the square of aluminum which pokes up a bit. It’s worn a crescent on the outside of the weights basically. Could that be the issue?

If I’m not mistaken that bushing does it not just help with the idle? The 40 series doesn’t have one, neither do the 1 in drivers made for 30 series. That’s the reason why I have not had a rush to replace it. The sticking occurred before the bushing was gone anyway. Please correct me if I am wrong.

 

[J.S.@SMS]

Well, the bushing holds the belt up, which raises the engagement rpm. So yeah it does just help at idle, and the reason the 1" drivers don't have them is that they already have the right belt height. So that could be your problem. In short pick one:
https://www.gopowersports.com/comet-bronze-bushing-30-series-3-4-200349/
https://www.bmikarts.com/Bronze-Bushing_p_1763.html
https://www.ombwarehouse.com/comet-torque-a-verter-bronze-bushing.html

And If you don't want to be replacing these, I've had a pretty good experience with this driver. It does require the next size up belt.
https://www.gopowersports.com/30-series-driver-3-4-bore-with-bearing/

 

[950speed]

Could the wear on the weights cause it to stick?

 

[JTSpeedDemon]

IDK, but worn areas in the recesses are always bad.
Same concept with Briggs starter clutches.

 

[950speed]

Alright so I will order a new bushing and weights. As well as lube it again

 

[950speed]

Is there another brand that anyone would recommend of graphite lubricant aside from comet. I seem to have misplaced the previous one I had and can’t remember the brand, all I know is that it was not comet brand

 

[J.S.@SMS]

I use the blaster dry graphite from home depot.