Share your driveshaft curves

Any video of the with and without the blip?

I would video the rear in action to see what was happening?

Have you noticed if weather conditions effect it at all?

Bill Simpkins
74 Nova
SBC 406
3240 pounds
Speierracing heads

60 1.27 (10/16)
1/8 6.03@111 (10/16)
Best 9.87@131 on the rev limitor 1 Feb 2013

nova

quarterpanelview

wheelie

FTI Converter
www.speierracingheads.com

Posts: 1837 | Location: San Angelo | Registered: March 07, 2005

Ignored post by banjo posted

DRR Top Comp

posted

B1tch t1ts Ed, you're driver is doing so good winning 5 round races your opponent is 041 in the final rd.

You don't want this trauma for your driver.

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

Ignored post by Mike Rietow posted

DRR Sportsman

posted

The bottom graph is what it does most all runs. No shock setting, tire changes really effect it. It will print tickets then throw out one that is .015-.02 off.

Then it ran the top graphs early in the season it ran 5 runs and varied .0007. can't get it to do it again.
Track temps were much cooler.

Posts: 1462 | Location: St Marys | Registered: January 12, 2004

Ignored post by ski_dwn_it posted

DRR Sportsman

posted

quote:
Originally posted by banjo:
Any video of the with and without the blip?

I would video the rear in action to see what was happening?

Have you noticed if weather conditions effect it at all?

Yes when no blip it dead hooks. When it blips there is about 1 revolution of the tire out about 8-10 ft.

Posts: 1462 | Location: St Marys | Registered: January 12, 2004

Ignored post by ski_dwn_it posted

banjo

DRR S/Pro

posted

Not sure what type of rear suspension you have, but i rin leaf springa. But i chased an issue a while back where the car would do what your describing. It turned out i didnt have enough shock travel and it would top out and unload the tire. It was intermittant and drove me crazy. Maybe something to look at.

Good luck.

Posts: 1837 | Location: San Angelo | Registered: March 07, 2005

Ignored post by banjo posted

DRR Top Comp

posted

quote:
Originally posted by ski_dwn_it:
The bottom graph is what it does most all runs. No shock setting, tire changes really effect it. It will print tickets then throw out one that is .015-.02 off.

Then it ran the top graphs early in the season it ran 5 runs and varied .0007. can't get it to do it again.
Track temps were much cooler.

re-post the photo's of the two graphs which include the rpm to the left. The flash stall and drop back stall will be helpful towards seeing what's going on with the power.

The stall tells about the power, or in other words the conditions, for power.

Can't see the rpm, so I can't see the difference in power/conditions between the two runs.

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

Ignored post by Mike Rietow posted

1320racer

DRR Elite

posted

quote:
Originally posted by ski_dwn_it:
Yes when no blip it dead hooks. When it blips there is about 1 revolution of the tire out about 8-10 ft.

as I've stated the car needs a lot of work!

Posts: 13522 | Location: NJ | Registered: August 20, 2000

Ignored post by 1320racer posted

Brktracer

DRR Pro

posted

https://i.imgur.com/1td5wPI.jpg

Matt Ward

Posts: 1395 | Location: South Carolina | Registered: March 20, 2004

Ignored post by Brktracer posted

DRR Top Comp

posted

quote:
Originally posted by Brktracer:

This should post photo,img on each end of link,...

Yeah, all ya do, is add img to each end of the link

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

Ignored post by Mike Rietow posted

DRR Top Comp

posted

Current graph almost 109 mph.

This graph will be the new graph (red drawn line), with the new 9" converter 6.41 dial at 112 mph on a 8.5 x 26" tire, high gear only

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

Ignored post by Mike Rietow posted

DRR Sportsman

posted

quote:
Originally posted by Mike Rietow:
quote:
Originally posted by ski_dwn_it:
The bottom graph is what it does most all runs. No shock setting, tire changes really effect it. It will print tickets then throw out one that is .015-.02 off.

Then it ran the top graphs early in the season it ran 5 runs and varied .0007. can't get it to do it again.
Track temps were much cooler.

re-post the photo's of the two graphs which include the rpm to the left. The flash stall and drop back stall will be helpful towards seeing what's going on with the power.

The stall tells about the power, or in other words the conditions, for power.

Can't see the rpm, so I can't see the difference in power/conditions between the two runs.

The first graph stall is at about 6200. The second graph is with new Abruzzi converter 8inch that stalls at 6450

Posts: 1462 | Location: St Marys | Registered: January 12, 2004

Ignored post by ski_dwn_it posted

DRR Top Comp

posted

quote:
Originally posted by ski_dwn_it:
quote:
Originally posted by Mike Rietow:
quote:
Originally posted by ski_dwn_it:
The bottom graph is what it does most all runs. No shock setting, tire changes really effect it. It will print tickets then throw out one that is .015-.02 off.

Then it ran the top graphs early in the season it ran 5 runs and varied .0007. can't get it to do it again.
Track temps were much cooler.

re-post the photo's of the two graphs which include the rpm to the left. The flash stall and drop back stall will be helpful towards seeing what's going on with the power.

The stall tells about the power, or in other words the conditions, for power.

Can't see the rpm, so I can't see the difference in power/conditions between the two runs.

The first graph stall is at about 6200. The second graph is with new Abruzzi converter 8inch that stalls at 6450

Put it in high gear right after it comes off the transmission brake.

Or dial in the chassis for wheelspeed at the hit.
1. tighten the front end 2. loosen rebound a bunch & tighten compression a bunch, on rear shocks.

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

Ignored post by Mike Rietow posted

DRR Top Comp

posted

I have a couple people I'm interested in skinning up, but I want to make it fair for them. So I'm gonna do a 8" slick x 26" tall to make it fair for them, no excuses.

This graph will be the new graph (red drawn line), with the new 9" converter 6.41 dial at 112 mph on a 8.5 x 26" tire, high gear only

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

Ignored post by Mike Rietow posted

DRR Sportsman

posted

Mike have pm

Posts: 1462 | Location: St Marys | Registered: January 12, 2004

Ignored post by ski_dwn_it posted

CAD

DRR Trophy

posted

quote:
Originally posted by Brktracer:
https://i.imgur.com/1td5wPI.jpg

My truck does the same exact spike at the shift. It has never affected how it ran, nor how I dialed it.

Clark

Posts: 149 | Location: Omaha NE | Registered: October 31, 2009

Ignored post by CAD posted

DRR Top Comp

posted

This graph is interesting at the shift, in the car it probably feels like it shifts hard, but it looks like a mistimed shift on the driveshaft graph, like the band is slow to get off the drum.

Then when finally does, it spins the tire.

How much line pressure in gear, above 2000 rpm's?

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

Ignored post by Mike Rietow posted

CURTIS REED

DRR S/Pro

posted

quote:
Originally posted by banjo:
Here are mine, Mine typically bump down.

Footbrake

Transbrake

Bill, am I reading right that you are shifting about 7500 and falling back to 7200ish?

____________________________
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Posts: 3149 | Location: KIEFER, OK. | Registered: August 17, 2007

Ignored post by CURTIS REED posted

DRR Top Comp

posted

quote:
Originally posted by CURTIS REED:
quote:
Originally posted by banjo:
Here are mine, Mine typically bump down.

Footbrake

Transbrake

Bill, am I reading right that you are shifting about 7500 and falling back to 7200ish?

Wrong

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

Ignored post by Mike Rietow posted

banjo

DRR S/Pro

posted

quote:
Originally posted by CURTIS REED:
quote:
Originally posted by banjo:
Here are mine, Mine typically bump down.

Footbrake

Transbrake

Bill, am I reading right that you are shifting about 7500 and falling back to 7200ish?

No, shifts at 7000, falls back to 6200ish depending on the track.

Posts: 1837 | Location: San Angelo | Registered: March 07, 2005

Ignored post by banjo posted

DRR Top Comp

posted

Could just be a loose sensor, magnet or wire possibly

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

Ignored post by Mike Rietow posted