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05-23-2007, 05:03 AM

#4051

Sean R

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Quote:

Originally Posted by ctn226

anyone can help me? I have a diff problem with this type R. all of the pulley which is have a ball bearing are melted, although I have tighten the front diff and a bit loose at the back. I am using GTB with 4.5R with 9.56 final ratio. I build the diff as per manual, is there anything wrong with my setup or something wrong with the diff?

It sounds like it wasn't tight enough and was slipping, causing incredible friction and heat, melting the pulley.

05-23-2007, 06:36 AM

#4052

Marcos.J

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Quote:

Originally Posted by BlueBird-sr

It sounds like it wasn't tight enough and was slipping, causing incredible friction and heat, melting the pulley.

yeah you missed a step or spmething to have that happen to your diff , i run a 3.5 brushless with no problems at all,just pay close attention when building your diff

05-23-2007, 07:06 AM

#4053

JRXS_chris

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Quote:

Originally Posted by Ali Graham

And whose track record is that

Good to hear it's going well Christoff

That truly used and abused JRXS of yours can be retired!

Sorry to dissapoint you Ali but its Chris Clarke's, he beat yours not so long ago!

05-23-2007, 02:34 PM

#4054

Marcos.J

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i did some minor changes to a set up that i posted a few pages ago, i changed the front long arms to the short arms and raised the roll center front and rear, and wow what a difference , i ran it earlier today at my local track (with a un-prepped track) and was really good!! cant wait to try it again this weekend on a prepped track.

05-23-2007, 07:12 PM

#4055

ROBORAT

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marcos: what did raising the roll centers do in terms of handling?

05-23-2007, 07:51 PM

#4056

Sean R

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Adding more traction by making the car roll more.

oops - I was thinking of the the upper arm, my bad.

Last edited by Sean R; 05-23-2007 at 08:04 PM.

05-23-2007, 07:55 PM

#4057

RBLove

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Quote:

Originally Posted by BlueBird-sr

Adding more traction by making the car roll more.

High roll center = car will lean less, react faster, and provide more over all traction.

05-23-2007, 08:02 PM

#4058

ROBORAT

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Blue/RBLove: I know thats what it will "technically" do. I just wanted to confirm if thats what Marcos also observed when he did the change. But thanks, I appreciate all the help everyone provides in these threads.

05-23-2007, 08:44 PM

#4059

RBLove

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Quote:

Originally Posted by ROBORAT

Got ya. Sorry about that. I am anxious to hear his thoughts as well..

05-23-2007, 09:38 PM

#4060

Marcos.J

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Quote:

Originally Posted by RBLove

High roll center = car will lean less, react faster, and provide more over all traction.

ditto

05-23-2007, 09:39 PM

#4061

Marcos.J

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also with the short front arms you are not able to use the lower shock mounting hole on the front shock tower the left shock's collar will rub against the front diff pulley

05-24-2007, 12:18 AM

#4062

ctn226

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Quote:

Originally Posted by Marcos.J

yeah you missed a step or spmething to have that happen to your diff , i run a 3.5 brushless with no problems at all,just pay close attention when building your diff

Thanks Bluebird-sr and Marcos.J for your help, for your info, I already tightened them quite tight and just a bit loose at the back, after the race I disassembled the diff and I found that the thrust bearing ( F/R ) were broken too. Marcos may I know how tight is the diff to use a brushless motor? thanks

05-24-2007, 12:49 AM

#4063

ROBORAT

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RBLove: as mentioned i appreciate all the inputs .... so its all good!

Marcos: good to hear! im actually planning to run the high roll set up this weekend as well.

05-24-2007, 04:48 AM

#4064

Marcos.J

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Quote:

Originally Posted by ctn226

i build it like i build every diff using AdrianM method,

05-24-2007, 05:32 AM

#4065

TheCoolCanFanMan

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Quote:

Originally Posted by ctn226

Are you using the thrust race that comes with the 'R' kit, if so you may find that the balls in that particular thrust race some times come dislodged and lock up the diff spiradically, there are other thrust races avaliable which the balls sit in a solid washes and not a hollow one, these work far better.
Cheers Malc THE

CAN

MAN