Originally Posted by
R3VoLuTiOn
what timing are those motors at?
in 17.5 I found the motiv similar to the 24k in performance.
my 24k had more power at the start with fading at the end, with a friends motiv running more consistent throughout the run and more power at the end - that's dependent on timing and gearing of course.
For 21.5 I liked the motiv around 52* on the can, I'd gear it up. 40c is too cold for it to be going fast. No 21.5 24k to compare with at the time.
I agree with your comments about the fade on the 24k. I find that if you bring the timing down to 40-43 and add one more tooth to the pinion it helps. The motiv is solid the entire run.
We run on smaller tight track up here mainly with 60ft straights.
The motiv with S-HIGH is ideal on tight tracks, and I found that if the track is a bit more open I would run, FDR 3.9 with 49 timing, and if the track has more slow speed corners, I bring the timing down to 40 and a 3.8 FDR. The lower timing increases more mid range power even though you lowered the FDR. Motor temps are in the 140-150 range with fan