No pinion snubber pic

Kev · Post by **Kev** » Wed Aug 01, 07 10:41 pm

Forgot to wind my snubber up all weekend! (Glad I didn't now with all the air shots! This was on the 11s run)

Dave-R · Post by **Dave-R** » Thu Aug 02, 07 8:40 am

Wow! Those springs are really wound up.

Anonymous · Post by **Anonymous** » Sat Aug 04, 07 12:30 am

Forgive me for asking, but if you had wound the pinion snubber up, would it have damage the car ?

Kev · Post by **Kev** » Sat Aug 04, 07 12:52 am

Possibly less likely to damage anything. The jury is out on pinion snubbers. My springs are super stiff in front of the axle and clamped to avoid the front portion flexing. The pinion snubber is for weak front sections of spring and is designed to stop the front portion s-shaping, loading and unloading the tyres by whacking into the floorpan and stopping the rear axle rotating..If the springs aren't arrested by either method the pinion angle can go doo-lally and there goes the prop!

Anonymous · Post by **Anonymous** » Sat Aug 04, 07 1:21 am

I see, so the pinion snubber is the last line of defence, so to speak,
Thanks..

Darran

Dave-R · Post by **Dave-R** » Sat Aug 04, 07 10:05 am

Kev wrote:The pinion snubber .....is designed to stop the front portion s-shaping, loading and unloading the tyres by whacking into the floorpan and stopping the rear axle rotating..If the springs aren't arrested by either method the pinion angle can go doo-lally

Exactly what is happening in your photo Kev. Strong front section or not. The low rpm torque from NOS is mighty powerful. The pinion snubber would have given you a better 60 on slicks.

In the rare cases where a car seems to go faster I think it is because the spring wind-up eases the power going to the floor and then unwinds once the car is moving - giving it a little push. Like the wrinkle walls on your slicks. It is stored energy.

Kev · Post by **Kev** » Sat Aug 04, 07 2:39 pm

Be interesting at the HRDs then. I'll wind the sucker up and see if I can beat my 1.57s best 60ft

Kev · Post by **Kev** » Sat Aug 04, 07 2:41 pm

Aus Charger wrote:I see, so the pinion snubber is the last line of defence, so to speak,
Thanks..

Darran

Not so much a last line of defence. More an assistance to get over the hundred+ year old buggy spring design.......

Dave-R · Post by **Dave-R** » Sat Aug 04, 07 5:41 pm

It would actually be very interesting to see what happens with and without.

To be effective make sure you wind it up to about a quarter inch.

Anonymous · Post by **Anonymous** » Sat Aug 04, 07 6:58 pm

Is that a 1/4 inch gap to the floor or raise it a 1/4 inch?

Dave-R · Post by **Dave-R** » Sat Aug 04, 07 7:25 pm

Sorry. Quarter inch from the floor.

Dave-R · Post by **Dave-R** » Sat Aug 04, 07 7:26 pm

But on the track ONLY!

Kev · Post by **Kev** » Sat Aug 04, 07 7:27 pm

Measured with the driver in the seat. And wind it down before you load your weekends gear in!

Anonymous · Post by **Anonymous** » Sat Aug 04, 07 7:45 pm

Great Pic Kev , love it , were you launching with the gas on?

Gotta love the Caltrac design.

Kev · Post by **Kev** » Sat Aug 04, 07 7:57 pm

I launch by mashing the throttle from tickover bringing in a 150hp nitrous shot. Flashes the convertor and all hell breaks loose for 2 seconds then it's a gentle cruise to an 11. As Mr Walton said "The first 60ft was great, but the rest was boring!"