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Strategies & Market Trends : A.I.M Users Group Bulletin Board -- Ignore unavailable to you. Want to Upgrade?


To: RFH who wrote (12146)7/25/2000 8:55:49 AM
From: OldAIMGuy  Read Replies (1) | Respond to of 18928
 
Hi RFH, No Brakes is a relative term! The rear drums were still acting as "coaster brakes" but the engine was doing more braking than the rears. The fronts were boiled and needed to cool enough to have pedal back. It took two laps of going slow and almost never touching the pedal to cool the fronts back to "squishy pedal" from "nobody home."

What was a surprise was that the brakes had been rock solid all weekend until that race. It was a bit warmer on Sunday, but I didn't think it was warm enough to give me trouble. The car warned me a lap early that things weren't happy in the brake dept.

To give you an idea of what my race car goes through in a lap of Road America, here's the rundown:
- Turn 14 to turn 1 (right hand) (very long straight) - 50 MPH up to 110 MPH then brake to 75
- Turn 1 to turn 3 (right hand) - 75 back up to about 100 then brake to 60
- Turn 3 to turn 5 (right hand) (long sweeping road) - 60 MPH back up to about 115 then brake to about 35 MPH, drop to 2nd gear
- Turn 5 to 6 (left hand) - second gear to the top of third - about 85 mph, and up steep hill. Brake to 45 mph.
- Turn 6 to 8 (left followed by right sweeper) - Back up to about 90 MPH and head downhill and brake to about 40 MPH
- Turn 8 to the KINK (hard left followed by long right hand sweeper) - set the car up for a long gliding right hander at about 70 mph to the exit of the carrousele then accelerate to just over 100 before braking for the kink to about 80 mph.
- The KINK to Canada Corner (right bend followed by long, downhill sweepers left) - 80 mph up to about 130 mph then brake to about 50 mph for turn 12 (Canada Corner)
- Turn 12 to Turn 14 (hard right followed by left uphill blind sweeper under bridge) - 50 mph up to about 90 mph then brake to about 50 for Turn 14.

By keeping the top speed down from 14 to 1 and from 3 to 5 you can engine brake for those turns and cool the brakes off a lot. The run down to Canada Corner is also a good cool down zone if one stays off the gas and holds the car to about 80 mph. Then it's watch the mirrors and stay out of everyone's way!!

The brakes were fine once cooled off. I think I'm going to see if I can duct some air to the fronts before I race again. :-) Road America's just 35 minutes further north than Port Washington. I'll be racing there again in September on the 22nd through 24th.

Best regards, Tom