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Toymods » Tech & Conversions » rwd loss of traction in launch - pinion angle - post lowering susp.

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5KinKP60
Regular


Location:
Finland
Registered:
June 2002
Re: rwd loss of traction in launch - pinion angle - post lowering susp. Mon, 16 December 2002 01:06 Go to previous message

First I have to say - Youngy, your setup sounds thus far the proper way of doing things. Good job!
I myself will not stretch as far as having multiple hole brackets. I shall most likely just restore attitudes close to factory angles and leave it at that.

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I have found some material in the net that supports my view on the pinion angle issue. (What it's worth, I gather almost anyhting can be proven if we hold 'stuff found in the net' as absolute truth on the matter.)

After ploughing quite a bit in American drag racing forum world, these two quotes sum up well info I've gathered on this pinion angle (PA) issue. I found these at: http://www.hardcore50.com/
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more pinion angle discussions


NoSlix
Rookie
Registered: May 2002
Location: Texas
Posts: 40

Dan at Wolfe Racecraft told me last week that he doesn't know why people are so anal about pinion angle. He said their cars go the same no matter what pinion angle they use. I have to agree with that. I've tried anywhere from -5 to +2 and 60ft'd the same. What I did notice was that anything positive produced drivetrain vibration.
__________________
Shane Hill
9.12 at 151mph
1990 LX T76/glide/igloo
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Bulletracing1
Junior Member
Registered: Dec 2001
Location: Markle, IN
Posts: 10

In my testing, what NoSlix said that Wolfe told him is true. The only thing you are trying to do is reduce friction in the driveline, it will not affect traction or the car going left or right. Yes, the reason you adjust the pinion angle down is because of upward pinion movement under accel. As for your comment on the ladder bar/4 link advantage, PA will still change as the suspension travels but because the ladder bar/4 link has solid mounts it won't deflect. With rubber bushings they have to deflect or the suspension will just bind up. One last thing, another place that you can measure engine/trans angle is the starter, it's bigger than the damper and easier to stick an angle finder on, unless your headers are in the way which is highly possible.
__________________
Trent Braden
NMRA REN #7 in '00
NMRA Hot Street 3114 in '02
http://www.bulletracing.net

[Updated on: Mon, 16 December 2002 01:17]

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SubjectPosterDate
Read Message   rwd loss of traction in launch - pinion angle - post lowering susp. 5KinKP60Mon, 09 December 2002 00:49
Read Message   Re: lowered suspension - rwd loss of traction in launch YoungyMon, 09 December 2002 01:07
Read Message   Re: lowered suspension - rwd loss of traction in launch gianttomatoMon, 09 December 2002 01:10
Read Message   Re: lowered suspension - rwd loss of traction in launch NarkMon, 09 December 2002 01:11
Read Message   Re: lowered suspension - rwd loss of traction in launch gianttomatoMon, 09 December 2002 01:23
Read Message   Re: lowered suspension - rwd loss of traction in launch Steve_ReynoldsMon, 09 December 2002 01:42
Read Message   Re: lowered suspension - rwd loss of traction in launch gianttomatoMon, 09 December 2002 01:48
Read Message   Re: lowered suspension - rwd loss of traction in launch YoungyMon, 09 December 2002 01:19
Read Message   Re: rwd loss of traction in launch - pinion angle - post lowering susp. 5KinKP60Mon, 09 December 2002 01:53
Read Message   Re: rwd loss of traction in launch - pinion angle - post lowering susp. YoungyMon, 09 December 2002 02:43
Read Message   Re: rwd loss of traction in launch - pinion angle - post lowering susp. BugmanTue, 10 December 2002 06:41
Read Message   Re: rwd loss of traction in launch - pinion angle - post lowering susp. 5KinKP60Tue, 10 December 2002 11:05
Read Message   Re: rwd loss of traction in launch - pinion angle - post lowering susp.  5KinKP60Mon, 16 December 2002 01:06
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