TEST-N-TUNE NOTES OCT 18 2020
We are experiencing a problem with fine dust on track, if (a) we leave the doors open, (b) we do Not cover the track between tests and races. Please cover track when you leave : )
Dave hit a 3.9; using a 9/23 (pink) gear ratio, F22 tires. Running an Opel.
Randy hit 4.4s with the Merc F30s 9/28? (he had stock gears, not sure if he changed them later)
I hit 4.4s; Running an Opel. F30s. Tried both 9/23(pink) and 9/24(green) ratios (both seemed Too Hot, neither improved the times!)
NOTE to have a calculated rear-wheel RPM of 7800, the ratio is 2.69, hence a 9/24(grn). For 7500 2.78, 9/25(orange)
…
— The cars are extremely noisy, I guess from the body rattling against the pan (with loose body screws for float).
— The best spot for adding any weight, IF needed, is not clear. The Opel’s don’t seem to really need any additional weight. I tried the 2.5g slug in the front pod slot, rear pod slot, and without the slug with little obvious change.
— Randy’s Merc handled better with a few grams behind the guide.
— The black end-bell 21k motor *seems lethargic (in response), even at 12v.
— In the Esses the rear can swing around in the 2nd curve (both Merc and Opel)
— The use of the Spherical bushings in the front uprights is “iffy”. They seem to stick in the channels making adjusting the axle height very tedious. Also, because they are designed for the rear drive axle, (hence designed to be broke in from an active axle) they seem overly tight for a passive front axle. **I obtained smoother action (less friction) and easier axle height adjustment using our typical practice of just using long grub screws, no bushings.
**I also obtained smoother action using Aluminum front wheels; which also adds a useful gram or 2 on the guide.
"... get on your bad motor scooter and ride!"
Sammy with Montrose