Anyone have a genuine Comet 40 series driver they want to sell?

[Edwin Spangler]

These cheap knock offs suck.

 

[Whitetrashrocker]

I was under the impression that the hardware was good, just the belt was caca.

What issues are you having that make you want a real comet?

 

[Edwin Spangler]

So Ive bought in total, 4 generic 40 drivers. The sheve gets cocked crooked, causing severe vibration but whats worse is it wont retract. I have to carry a small hammer to tap it and make it go back to rest. They all do this same thing after about a half hour of hard use.. Disassemble, clean and you have another good half hour of proper actuation.

Im 99% sure its the ramps and filing anything actually causes this issue to be worse as it allows the weights to rotate slightly inside the ramp. The weights have just enough room to shift and jam crooked on attempted retraction.

Now, I dont just try the driver and move on. They all get the same treatment: Filing/sanding, swap weights, springs, different lubes, parts between the 4...

Im doing some researchin, trying to find a fitting driver that has an actuation wherein everything moves in unison.

Is anyone else super hard on these generic drivers but DONT have a problem? They just work?

 

[Whitetrashrocker]

Interesting that you have 4 and having the same issues.

Could you post some pics of the innards?
Im curious as to what's different.
I have 2 comet 40s and have had zero issues.

 

[Edwin Spangler]

I've chucked two already but they're all this same thing... The one ON the kart only has newer weights.

 

[Edwin Spangler]

This look wrong? Something looks off since I reassembled..

 

[Whitetrashrocker]

The movable sheaves should be on the same side for best belt alignment. Being symmetrical it can be done this way but you need to split the difference so the belt stays as straight as possible.

 

[Whitetrashrocker]

These walls look like they could catch the springs with the teeth.

 

[Edwin Spangler]

Yea, I had an extra spacer on the driven, thats why it looked off to me.

So I got a chance to try a Comet driver and its working just fine.

I wonder if the cheap drivers have just enough slop for my backwards mounting to have an ill-effect.. I bet thats it.

 

[Denny]

He has it right WTR.

 

[Master Hack]

I had a very similar problem with mine.
look closer at the damage pointed out in the pic.
the two halves are slipping causing the two pieces to get misaligned then the weight jumps the ramp and jam up. The symptoms you describe fit exactly.
its either a design problem, or the nut is not tightened enough, or as in my case it is operating beyond its maximum power rating.
l’m sending almost twice the rated power through it. After screwing with itseveral times l just gave up and welded it. Its been that way for many hours of thrashing and still works perfectly. I drilled a few holes so l could spray dry lube in it

 

[Edwin Spangler]

I had a very similar problem with mine.
look closer at the damage pointed out in the pic.
the two halves are slipping causing the two pieces to get misaligned then the weight jumps the ramp and jam up. The symptoms you describe fit exactly.
its either a design problem, or the nut is not tightened enough, or as in my case it is operating beyond its maximum power rating.
l’m sending almost twice the rated power through it. After screwing with itseveral times l just gave up and welded it. Its been that way for many hours of thrashing and still works perfectly. I drilled a few holes so l could spray dry lube in it
View attachment 162649

Yea thanks. Ive actually been thinking of that exact thread youre talking about.

Welp, I have enough pieces that I can sacrafice some stuff to weld one up.

 

[Edwin Spangler]

Just throwing it out there if anyone has one...

Looking for a billet rod also.

Im noticing people dont sell this stuff used. Why is that? Stuff just stays with the vehicle when its sold I guess?

 

[Hellion]

Yea thanks. Ive actually been thinking of that exact thread youre talking about.

Do you know the name of that relevant thread? I don’t own a 40 series but I like to expand my brain…

 

[Edwin Spangler]

Do you know the name of that relevant thread? I don’t own a 40 series but I like to expand my brain…

No but I can find it, Im sure.

Reviving old Comet 40 series driver, or something along those lines I think.
The idea was that it was so far gone that if the welding fix didnt work, it was garbage.

 

[Edwin Spangler]

Do you know the name of that relevant thread? I don’t own a 40 series but I like to expand my brain…

Abused Series 40 Torque covereter repair/replacement damage ascesment.

The tork converter on the moble scrap heap has not been working right lately. using my advanced reasoning skills l concluded it should be fixed. So l contacted our resident CVT guru about fixing it. Theres about 1100 miles between us, so l wrench and Panchothedog inspects via pictures and...

www.diygokarts.com

 

[Edwin Spangler]

Mine does not jump the ramps, Im positive of that. I can always whack it with a hammer and it pops back into place.

Still gonna try the same fix though.

 

[Whitetrashrocker]

Again.
See how the walls are smooth topped where yours have the saw tooth.
Is the cross pin getting stuck in there?