A few slow-motion launches

Yes , Turbo Pro Trans. It’s prob a dime quicker than the 400. 3620# I’m pretty happy. Stock is not for everyone. I love to tune and not just the motor. I’m a bracket racer but I’m also a performance guy. Cars eat up efficiency and it’s a challenge to find it.

This message has been edited. Last edited by: BP758,

California Screaming!
Raceless in California!

Posts: 4673 | Location: Vacaville | Registered: January 07, 2004

Ignored post by BP758 posted

Mike Rietow

DRR Top Comp

posted

quote:
Originally posted by AlkyIROC:
This was mine many, many years ago.

https://www.youtube.com/watch?v=sYQJVzRGdcc

Look'n good.

Posts: 9398 | Location: Madeira Beach Fl. | Registered: June 12, 2018

Ignored post by Mike Rietow posted

posted

I have a mount fabricated under my car for a GoPro. I will use it from time to time to aid chassis tuning.

8.50 (1/4) car, 60' usually 1.18 to 1.19.

https://youtu.be/Pl2QHPxsMog

Very simple and effective as you can really see alot of whats going on if you pay attention. Can even see the left front tire and what it's doing in relation to the back.

This season the car is getting shock sensors to correlate to the video, time slip, etc.

Outside view.

https://youtu.be/vojLYC1ak18

DRR Trophy

posted

quote:
Originally posted by DOTracer:
I have a mount fabricated under my car for a GoPro. I will use it from time to time to aid chassis tuning.

8.50 (1/4) car, 60' usually 1.18 to 1.19.

https://youtu.be/Pl2QHPxsMog

Very cool. Man, that ride just leaves!

I'll try that with the camera underneath; my buddies are too busy with their own things to tape my launches. I may try to rig up some sort of scale with a pointer so I can better see how the suspension moves in relation to the frame.

Very simple and effective as you can really see alot of whats going on if you pay attention. Can even see the left front tire and what it's doing in relation to the back.

This season the car is getting shock sensors to correlate to the video, time slip, etc.

Outside view.

https://youtu.be/vojLYC1ak18

Very cool. Man, that ride just leaves!

I'll try that with the camera underneath; my buddies are too busy with their own things to tape my launches. I may try to rig up some sort of scale with a pointer so I can better see how the suspension moves in relation to the frame.

Posts: 377 | Location: Sioux Falls, SD | Registered: March 17, 2018

Ignored post by Bad Nusz posted

DRR Trophy

posted

quote:
Originally posted by Mike Rietow:
Geesh, you're not exaggerating! Imagine that tire when you take it off the rim, it'll fold up like an accordion, the size of a wallet!

Guys,other than I reckon premature wear of the sidewalls, does 'crushing' the tire like that also cause the contact patch to distort some, keeping the the tire face from pressing down evenly?

Posts: 377 | Location: Sioux Falls, SD | Registered: March 17, 2018

Ignored post by Bad Nusz posted

DRR Trophy

posted

quote:
Originally posted by CURTIS REED:
Looks like that Dart in the second video could use some more air. That thing was crushing the tire.

Also BN, bear in mind that those Mopars really separate on the launch.

Thanks, Curtis.
Can you or anyone explain to me why it is that those Mopars separate so much on the launch? Is it for the leaf spring being shorter and/or stiffer between the axle and front spring eye, than other springs?

Posts: 377 | Location: Sioux Falls, SD | Registered: March 17, 2018

Ignored post by Bad Nusz posted

CURTIS REED

DRR S/Pro

posted

quote:
Originally posted by Bad Nusz:
quote:
Originally posted by CURTIS REED:
Looks like that Dart in the second video could use some more air. That thing was crushing the tire.

Also BN, bear in mind that those Mopars really separate on the launch.

Thanks, Curtis.
Can you or anyone explain to me why it is that those Mopars separate so much on the launch? Is it for the leaf spring being shorter and/or stiffer between the axle and front spring eye, than other springs?

BN, I've never messed with a Mopar personally but if I were to hazard a guess it is because the mounting points of the suspension are set up in a way to have a lot of anti squat. I believe most of them us a pinion snubber that possibly contributes by pushing up on the chassis. Sorry I don't have a better or more specific answer.

Curtis

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Posts: 3150 | Location: KIEFER, OK. | Registered: August 17, 2007

Ignored post by CURTIS REED posted

DRR Trophy

posted

quote:
Originally posted by CURTIS REED:
quote:
Originally posted by Bad Nusz:

Thanks, Curtis.
Can you or anyone explain to me why it is that those Mopars separate so much on the launch? Is it for the leaf spring being shorter and/or stiffer between the axle and front spring eye, than other springs?

BN, I've never messed with a Mopar personally but if I were to hazard a guess it is because the mounting points of the suspension are set up in a way to have a lot of anti squat. I believe most of them us a pinion snubber that possibly contributes by pushing up on the chassis. Sorry I don't have a better or more specific answer.

Curtis

That's okay, Curtis; thank you anyway. If the pinion snubber works the way I envision, then I can see how it could give the differential housing something to pry against to push down from the chassis.

Posts: 377 | Location: Sioux Falls, SD | Registered: March 17, 2018

Ignored post by Bad Nusz posted