Cougar Diff problems!!!! Please Help

[PsycoChris]

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[moth898]

the white gear inside the gearbox is off. I filed the gear gently to mesh better and moved the gearbox halfes against each other until it was smooth.

[PsycoChris]

Originally Posted by moth898

the white gear inside the gearbox is off. I filed the gear gently to mesh better and moved the gearbox halfes against each other until it was smooth.

Where did you file, what did you file. There is A LOT of play in that gear, I think that Idler Shaft is off. And not correct. and it is locking the gears and making the diff lock. That is what I think the issue is.

[moth898]

I don't know for sure if its the shaft, but I am sure shumacher will find the problem and send a fix. Don't forget that these are the first models, they are bound to have a couple of problems.

What I did is disasembled the transmision until I was left with the two tranny halfes and purple motor mount together. I then turned the gear by hand until I got to the binding part. with a sharpy marker I marked all the teeth that are binding. You then have to take apart the tranny and get to the gear. I used a very fine half moon file one the inside of each marked tooth. I also passed the file over the outside of the affected area. I had to repeat this 4-5 times to get it right....be careful and file only two or three swipes at a time or you might remove to much material.

If your hooking left its because of the some problem with the diff. Take it apart start new by cleaning all the grease with degreaser. Make sure that the molly grease is only in the thrust bearing beacause if it gets anywhere else your diff won't work.

[Jaune]

moth898: Are you racing at Mirabel this summer? I want to see that Schumacher in action!

Sorry for being off topic and hope youll find a fix!

[moth898]

Where have you been jaune?!?! I'll be there this Saturday with the Cougar....hope to see you and your friends there. I even let you take the Cougar around the track when you show.

[PsycoChris]

edit....

[JustARcFan]

Could it be that i have a later kit than yours?

Mine has the smoothiest gearbox I've had the last years.

[PsycoChris]

Originally Posted by JustARcFan

Could it be that i have a later kit than yours?

Mine has the smoothiest gearbox I've had the last years.

Can you see the video I posted?? It shows how it locks up and then being free... If not here is the Link

CLICK ME TO WATCH THE VIDEO

[simoncrabb]

Yeah, mine had a tight spot, 5 minutes on track and it's really really free, beautiful.

It just needs running in, I was dubious, but it's true...

[JustARcFan]

That sounds really bad

It's a bit difficult to find a solution not having the car in my hands..

Do you see some odd things with the gears or gearbox?

[PsycoChris]

Originally Posted by JustARcFan

That sounds really bad

It's a bit difficult to find a solution not having the car in my hands..

Do you see some odd things with the gears or gearbox?

The Only think I see or Think the issue is. the Idler shaft the White gear sits on that spins the metal gear n diff. It has too much play and I think it shifts into a position that locks it and thus locks everything. That is my take on this

The 2 gears that I have discussed, are locking in 2 spots. I dont know why.

[ian h]

Originally Posted by simoncrabb

Yeah, mine had a tight spot, 5 minutes on track and it's really really free, beautiful.

It just needs running in, I was dubious, but it's true...

Same for me. I connected a dremel to the layshaft at low speed when I had the top half of the gearbox built. Ran it in till it was smooth ( 10 mins). All good on the track.

[mikeyscott]

Originally Posted by simoncrabb

Yeah, mine had a tight spot, 5 minutes on track and it's really really free, beautiful.

It just needs running in, I was dubious, but it's true...

Same for me.

I did back off the three screws and retigtened them on when the gearbox was mounted on the chassis.