Posted By: 03heavy
Finally holding up its own weight - 09/17/18 05:39 PM
Need some help with setting the pinion angle
Leaf springs (Caltrac’s)and a Transbrake
Leaf springs (Caltrac’s)and a Transbrake
Finally holding up its own weight
Posted By: 03heavy
Re: Finally holding up its own weight - 09/17/18 05:41 PM
Should have picture 🤷♂️🤷♂️🤷♂️
Posted By: Cab_Burge
Re: Finally holding up its own weight - 09/17/18 06:02 PM
Call or contact Calvert for their advice on your car 
Posted By: ProSport
Re: Finally holding up its own weight - 09/18/18 12:32 AM
Looks nice!
Posted By: Just-a-dart
Re: Finally holding up its own weight - 09/18/18 01:02 AM
Originally Posted By Cab_Burge
Call or contact Calvert for their advice on your car
I agree with Cab. It is the wrong time of year for a pinion angle argument.(bad subject, beat to death....Goggle it)
Nice Duster!
Posted By: humpty
Re: Finally holding up its own weight - 09/18/18 01:54 AM
What is the question?
Posted By: 03heavy
Re: Finally holding up its own weight - 09/18/18 03:23 AM
We suggest the pinion angle to be between 2 and 4 degrees negative at rest, as the pinion will climb 2-3 degrees at the launch, assuming the preload is roughly 1/4 turn
This is from Calvert
This is from Calvert
Posted By: Biginchmopar
Re: Finally holding up its own weight - 09/18/18 06:01 PM
Originally Posted By 03heavy
We suggest the pinion angle to be between 2 and 4 degrees negative at rest, as the pinion will climb 2-3 degrees at the launch, assuming the preload is roughly 1/4 turn
This is from Calvert
This is from Calvert
Sounds right to me, I would go to 4 degrees negative to start.
What is your power level?
What type of trans?
Posted By: Pacnorthcuda
Re: Finally holding up its own weight - 09/18/18 06:17 PM
Calvert has answered this MANY times. 2-4 degrees down, with stated preload. You will be able to adjust preload without worrying about its effect on angle (within reason) at this setting.
Think about it...4 degrees down without bars, on a leaf spring set up works well, and the Caltracs limit spring wrap up..makes sense.
Think about it...4 degrees down without bars, on a leaf spring set up works well, and the Caltracs limit spring wrap up..makes sense.
Posted By: 03heavy
Re: Finally holding up its own weight - 09/18/18 07:10 PM
This was directed towards the guys using a Transbrake and a 3 speed
And trying to leave hard off the brake which I thought was a common setup
But after digging around most of the guys I found to be using the Caltrac’s
Are footbraking
I was just seeing how the fast guys do it
Thanks for the reply’s folks
And trying to leave hard off the brake which I thought was a common setup
But after digging around most of the guys I found to be using the Caltrac’s
Are footbraking
I was just seeing how the fast guys do it
Thanks for the reply’s folks
Posted By: Sammy
Re: Finally holding up its own weight - 09/18/18 07:14 PM
5-6 degrees down is what I have been doing for years. That rear does move quite a bit
Posted By: humpty
Re: Finally holding up its own weight - 09/18/18 07:26 PM
I wouldn't consider our car fast, but we're at -5 degrees launching a low gear 904 at 3500rpm off the transbrake on 275 Drag Radials, 3165lbs at the line with 4.30's. The biggest issue with the transbrake has been controlling the hit to keep the tires planted. Menscer fixed the issue with shock valving.
That is a beautiful A body!
That is a beautiful A body!