Slant Six Forum :: 1972 Dodge Colt

I think I need to move the ladder bars, it never went that right before,

Quote:

I think I need to move the ladder bars, it never went that right before,

Is it possible there was something on the track that caused a lack of traction on the right? You don't have 32# of air on that side do you!

I will hit the 7s in a street-driven Slant car before I am done, with boost of course so you can call me a cheater...

Keep on it. I remember clearly watching Charles Myers car take a hard turn about 40 ft out. Scared everyone, especially him. Might be worth calling him to see if he remembers how/if they fixed it. Bet he would be excited about your car!

Lou

I think it was prepped.
18 in the Left, 20 in the right slick.
If you look at the hook, it hooked.
Then it drove right, you can see the tire tracks.

Quote:

I think it was prepped.
18 in the Left, 20 in the right slick.
If you look at the hook, it hooked.
Then it drove right, you can see the tire tracks.

Why the difference? Setting stagger for the turnoff?

You may want to watch it in slow motion, it never hooked. Both left side and the right front were off the ground at one time or another.

18 in the Left, 20 in the right slick.

If the left rear was off the ground, then that would cause a hard veer.

Seymour's racecar ("hoppy"), that the Covalts fixed,

Author:	hyper_pak [ Tue May 13, 2025 2:11 pm ]
Post subject:	Re: 1972 Dodge Colt
Thanks Lou! Low 8's are no joke with a slant six.

Author:	Rick Covalt [ Tue May 13, 2025 5:09 pm ]
Post subject:	Re: 1972 Dodge Colt
Quote: I think I need to move the ladder bars, it never went that right before, Is it possible there was something on the track that caused a lack of traction on the right? You don't have 32# of air on that side do you!

Author:	hyper_pak [ Tue May 13, 2025 5:47 pm ]
Post subject:	Re: 1972 Dodge Colt
Quote: Quote: I think I need to move the ladder bars, it never went that right before, Is it possible there was something on the track that caused a lack of traction on the right? You don't have 32# of air on that side do you! I think it was prepped. 18 in the Left, 20 in the right slick. If you look at the hook, it hooked. Then it drove right, you can see the tire tracks. I will take some of the blame, my head is a ways from the head rest. I was not expecting the hook and it took me a bit to react. But I was expecting it to go kinda straight. But with no bog it just went.

Author:	Dart270 [ Tue May 13, 2025 6:03 pm ]
Post subject:	Re: 1972 Dodge Colt
I will hit the 7s in a street-driven Slant car before I am done, with boost of course so you can call me a cheater... Keep on it. I remember clearly watching Charles Myers car take a hard turn about 40 ft out. Scared everyone, especially him. Might be worth calling him to see if he remembers how/if they fixed it. Bet he would be excited about your car! Lou

Author:	Charrlie_S [ Wed May 14, 2025 3:44 am ]
Post subject:	Re: 1972 Dodge Colt
Quote: I will hit the 7s in a street-driven Slant car before I am done, with boost of course so you can call me a cheater... Keep on it. I remember clearly watching Charles Myers car take a hard turn about 40 ft out. Scared everyone, especially him. Might be worth calling him to see if he remembers how/if they fixed it. Bet he would be excited about your car! Lou You guys are making me feel good, about getting some 7.9's wth my 66 Valiant (yeah N2O), but a totally low dollar build. Back to our previously scheduled program.

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1972 Dodge Colt https://slantsix.org/forum/viewtopic.php?t=63924	Page 77 of 80

Author:	hyper_pak [ Wed May 14, 2025 7:34 am ]
Post subject:	Re: 1972 Dodge Colt
We are keeping the flame burning.

Author:	slantzilla [ Thu May 15, 2025 3:01 pm ]
Post subject:	Re: 1972 Dodge Colt
Quote: I think it was prepped. 18 in the Left, 20 in the right slick. If you look at the hook, it hooked. Then it drove right, you can see the tire tracks. Why the difference? Setting stagger for the turnoff? You may want to watch it in slow motion, it never hooked. Both left side and the right front were off the ground at one time or another.

Author:	hyper_pak [ Thu May 15, 2025 3:31 pm ]
Post subject:	Re: 1972 Dodge Colt
Quote: Quote: I think it was prepped. 18 in the Left, 20 in the right slick. If you look at the hook, it hooked. Then it drove right, you can see the tire tracks. Why the difference? Setting stagger for the turnoff? You may want to watch it in slow motion, it never hooked. Both left side and the right front were off the ground at one time or another. How could it lift the front tire if the tire didn't bite? The stagger was from last year to get the right pull out. I didn't expect all hell to brake loose.

Author:	Dart270 [ Fri May 16, 2025 5:46 am ]
Post subject:	Re: 1972 Dodge Colt
If the left rear was off the ground, then that would cause a hard veer. That could be leaving the ground because a shock/stop reached the end of its travel (on extension). IIRC, this was the issue with Seymour's racecar ("hoppy"), that the Covalts fixed, and I have seen several other cars with shock travel (hitting stop) issues that were severe and caused "ugly things." I think this is more prevalent than people realize, and should be checked carefully on any modified car. Lou

Author:	Greg Ondayko [ Fri May 16, 2025 7:23 am ]
Post subject:	Re: 1972 Dodge Colt
Lou, regarding in Stan's situation, is your thought concerning bottoming on compression of the rear shock? Or is it hitting the shock's stop on full extension? I understand that generally limiting the suspension motion by hitting the stops too much can cause goofy things, I am just trying to visualize this. Thanks, Greg

Author:	Dart270 [ Fri May 16, 2025 11:32 am ]
Post subject:	Re: 1972 Dodge Colt
Extension is what I'm thinking, but it could be either. If the car hits the tires hard, it might bounce upward (off the air/rubber in the tires) and then hit the extension stop, and then lift the tire off the ground. I think this is what was happening with Seymour's racecar. I guess if it hit the compression stop hard then that might bounce the car upward more violently and then lift the tire? It would seem it would then have to (1) hit the extension stop too or (2) overcome the movement rate allowed by the shock in order to lift the tire off the ground. Personally, I am going to get more serious and careful about measuring shock travel, stops/lengths on either end, and the "ride height" or the shock length where it typically rides. With a lowered car with stock shocks, or with any aftermarket shocks, these things could become important. I just did this on the rear of the 34 Coupe and it rides quite near to the middle of the travel (16.8") and the stops are 13.1" and 20.7". Lou

Author:	Rick Covalt [ Fri May 16, 2025 4:54 pm ]
Post subject:	Re: 1972 Dodge Colt
Quote: 18 in the Left, 20 in the right slick. That is quite a bit more than most people run in slicks isn't it? Quote: If the left rear was off the ground, then that would cause a hard veer. But if the left rear unloaded and lost traction, the right slick should have driven the car to the left, correct? His car went hard Right? Something seems funky here to me. Quote: Seymour's racecar ("hoppy"), that the Covalts fixed, Seymour's car was running slicks with less than 10 # pressure if I remember correctly. It would hit so hard off the transbrake (@ 4500rpm) that it would crush the tires down, then they would rebound and actually lift the rear tires completely off the ground. This is a leaf spring car also. The fix was another long leaf added to the spring pack, mounted upside down and I think he got a new set of adjustable shocks that he could slow down the rear ends motion when the car left. These items worked and the car went 11.00 in 1/4 & 6.91 in 1/8. He also switched to large radial tires because the car swayed so much at 117 mph.

Author:	hyper_pak [ Sat May 17, 2025 9:35 am ]
Post subject:	Re: 1972 Dodge Colt
Lots of good and not so good in the video. I do see a bounce up on the left, off the ground? I had made adjustments to the rear shock over the winter. I changed both bound and rebound settings. I also measured the compressed height and according to one chassis guy I am to far out from the center of the shock. I can get it more centered by lowering my spring rate. (Which I do not currently know). When I get the trans out I will measure the suspension drop before the shock bottoms. I was playing with tire pressures earlier trying to get off the line. That is how I got to the 20 lbs. number. I have a 12 inch tire contact patch at lower pressures, around 15 lbs.

Author:	hyper_pak [ Sat May 17, 2025 1:33 pm ]
Post subject:	Re: 1972 Dodge Colt
Here is the last video from Xtreme. This is when the trans broke. Looking at it I do see the little/large left wheel hop. Dennis might have seen something I didn't. We had lowered the 2-step to 4500 here. Not sure why it's rolling, clutch stop might be too high. I don't have a lot of experience with a diaphragm clutch, do they lock as RPM comes up? 60 foot time on this run was 1.87 vs 1.76 on first pass. 1 somethings are better than 2 anythings. I was much more ready this time for the launch, but still went a little right. https://www.youtube.com/watch?v=jhfiuwXL8tk

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Author:	hyper_pak [ Sat May 17, 2025 1:36 pm ]
Post subject:	Re: 1972 Dodge Colt
The left shock might have reached it's full extension limit. I could see that. I am going to remove the coil over and put it in a press with a valve spring checker I have. Then I will know what spring rate I have.