Yea I get that, just dont see how that small of a gear change would do that. Has to be another factor contributing plus the tires. Hell maybe your band was slightly slipping with the old trans

Big, I get what you are saying. This new trans has taken over my mind since the get go. The data logs showed I lost some flash stall & changed my fall back rpm on the shift.

See if I can make it work in the $600 buyback round.

2BKING

Today was the most expensive TnT to date for me.

You'll might not understand why I was worried about the wheelies. Yes, the 1.80 1st gear caused them & changed other things also. I worked very hard on getting very good/consistent reaction times & not using a box. The key was keeping the front tires in the beams & not to wheelie. Wheelies suck for consistent reaction times with our car. The pretty insignificant 1st gear ratio change woke up the wheelies & reactions all over the place.

I made front shock adjustments for the buyback round, it cut the wheelie about in half. Tonight I made another shock adjustment for 1st round tomorrow. Hopefully, it will be close to my refined, wheels on the ground set-up.

This bracket car combo is pretty unique for a competitive bracket combo. I have worked very hard to take a somewhat high power/weight & use 30x9 radials. I wish I could have put on a better showing at the Spring Fling Million.

A small ratio change or small other changes, affects this very finicky combo. I built & own this combo by choice.

2BKING

Half the field had same results as you. I give everyone there credit for trying. Winning is hard.

The 1.76 -1.80 gearing ratio change (SLR) is insignificant imho. I know little about transmissions, but is it possible that 1.76 was helical and the 1.80 is straight? If yes, more efficient?

When I went from 1.40 to 1.56 planet, I had to reduce launch by 400 rpm and the box delay setting was almost identical.

Good Luck tomorrow….

I’m watching.
Basically you are climbing the ring gear.
The 1.76 worked the tire, the 1.80 added about 38 foot lbs. Mark has a great point too on the gear set. Call you Monday.
Good luck.

quote:

Originally posted by BP758:
I’m watching.
Basically you are climbing the ring gear.
The 1.76 worked the tire, the 1.80 added about 38 foot lbs. Mark has a great point too on the gear set. Call you Monday.
Good luck.

I definitely don't need more ft. lbs. of torque.

M & M, the new straight cuts are more efficient than the old helicals.
Hence the reason for quicker: 60's, ETs & the comeback of wheelies.

Hope to have a more detailed wannabe race report in a couple days.

2BKING

It wasn't pretty but I made it through the 1st round. If I lost, I wasn't going to buyback to make another expensive TnT.

^^^^Good job. I’m sure you’re aware they offer 1.74 straight cut planets.

I saw that win then hit the honey do list. How did you end up?