Drag Racing Discussions > Front Engine Dragsters

hi from the UK

<< < (4/5) > >>

GlennLever:
Outstanding, dressed for the occasion and fuel is right across the street.

Dolmetsch:
Most cool. Enjoy!
don

mfp-66:
got a few set up runs done at the local track. actually its an old WW2 airfield that they set up timing lights on. very bumpy.



kept messing up 1st to 2nd shifts so times were slow



the last run I did. I pulled up to the line, once the green light came on I applied the trans brake, increased revs, had a misfire which cleared then released trans braked and shot off the line. no tyre spin.
shift light came on, got 2nd no problem, near the finish the rear started to bounce.it got so bad I thought it was going to go on it side. it bottomed out on the frame a few times. managed to get it stopped ok. the time was 15.9@ 112mph with a 60ft of 6.1.
I can only think the clock started while I was still messing with the trans bake on the line. didn't get a video of this run so cant review the run.
the underside of the frame is quite badly scraped.

to cut down bounce do I lower or increase tyre pressures or will this not help?

PSweeney:
what psi you running, mostly likely bouncing as a consequence of snapping throttle shut and braking too hard.  You need to roll off the throttle and apply the brake gently

mfp-66:
7psi tyre pressure

Should I put it into neutral

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