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Build Diaries / Re: Belly Tank Build Diary
« Last post by Mike Brown on Today at 02:53:21 PM »We ran the ECTA mile this past weekend in Arkansas. The new rear suspension with coil springs and adjustable shocks was a handful. I started with 5 clicks (of 18) from full soft on both compression and rebound. The car was almost undriveable with so much twisting under acceleration. I moved up to 10 clicks then 13 and it was better. The best run was 204+ in the mile, note that I have been 210+ on this track last year. That was spraying the NOS for the last 1/4 mile for the 204 pass. The 210 pass was without NOS. The restriction that I put in blower bypass valve did help, I did not break the tires loose at all after shifting. I think that it is a traction issue, the 210 run had a tailwind while the 204 run was against a headwind. The data shows about the same RPM through the traps for both runs, or my clutch is slipping. I have a couple of inputs left on my data logger so the plan is capture tire speed for the front and rear wheels. That should help figure this out. I was almost at the rev limiter (6,500 rpm) on both runs, with 2.48:1 rear gears. I switched to 2.22:1 rear gears and went slower (199+). I plan to do some testing at the dragstrip with the original rubber springs. Going fast is harder than one would think.
