Last night I ran at Maritime raceway in my usual track. I started with my Fantom 10.5 with 10 degrees mechanical timing as is usual. I also have the AMTS set at 26.25 and the DDRS at VII. However I had gotten there 2 hours early so had some time on the track and as we all know time = time to mess with things (and cock them up generally in my case).
However...... I started out with my last gearing at 5.95:1 FDR and began dropping teeth on the pinion one by one, running for a couple of minutes and then checking lap times. By the time I had come down from 30 to 26 the car had gained 2.5 seconds PER lap. The funny thing was then temps were dropping until I hit 27 and then started to rise again as I went to 26. I finally dropped to 25 about 7.45:1 and the speed was noticeably slower and the motor was uber hot.
I dropped back to 26 Tooth, 7.15:1 and the car was super quick down the straight and had masses of rip in the infield, now this is not a particularly small track by any stretch and the car was matching my buddy with an SPX and a ludicrous amount of timing down the straight.
The whole thing just seemed to have come alive, I just wonder how much people have looked into dropping the gearing to allow the motor to rev out and use all available timing, as we all talk about really low FDR's but maybe we need to be looking at 'using' the Kv on the motors to best effect, as Shawn at SP says on the Heartland video, "with the software they are able to DOUBLE the Kv of the motor", why are we frying motors when we are not using the power in the best possible way?
The SPX guys at our track have had gearing in the high 7's and low 8's for months and now I see why.
What started me thinking was that the car was still accelerating at the braking point at the end of the straight and I thought why am I wasting the opportunity to have monster acceleration and never actually reaching the top speed of the car for the track. I am now converted am gonna drop the gearing back to 7.45 and move the mechanical timing on the motor to full advance (20 degrees) and then repeat the process to see if the motor has any more to give.
During my final I was at P10 and had 'blasted past everyone upto 4th place from the start line this was even before the usual first corner messy crashes, and had 4th for about 2 minutes until I made several crappy attempts at lapping people and managed to write myself off down to 7th. As is usual the car was outperforming the driver but OMG it was quick.
Has anyone else come across this before or am I barking up the wrong tree?