IF he has my clutch kit, THEN the 966 ramp will work.
- The 965 ramp is 50.7 grams
- The 966 ramp is 51.0 grams; it is only 0.3 grams heavier than the 965 ramp.
If the guy has bone stock clutching he can remove the 965 ramps and install the 966 and they will work.
My kit works with the 951, 990, 967, 965, 968...AND the 966 ramp.
Because every ramp is a different mass, all you have to do is get the right pivot bolt weight for the elevation.
Example
At 7000 feet need a total of approximately
89.0 to 90 grams of complete ramp weight.
- Complete ramp weight is the weight of the ramp (left arm+ramp+right arm) plus the pivot bolt weight.
On my clutch kit...
A 990 ramp uses 17.5 grams pivot bolt weight to get approx 90 grams
A 968 ramp uses 16.7 grams pivot bolt weight to get approx 90 grams
A 967 ramp uses 19.3 grams pivot bolt weight to get approx 90 grams
A 966 ramp uses 14.2 grams pivot bolt weight to get approx 90 grams
A 965 ramp uses 15.4 grams pivot bolt weight to get approx 90 grams
A 951 ramp uses 17.0 grams pivot bolt weight to get approx 90 grams
The 965 ramp is 50.7 grams
The 966 ramp is 51.0 grams; it is only 0.3 grams heavier than the 965 ramp.
So if the 966 only 0.3 grams heavier than the 965 ramp, then what reason would it not work in place of of the 965?
I just ran the 966 ramps last week in Revelstoke in Keystone before the "shovel out" at 7190 feet and did just fine with them. Correct engine speed and superb engine braking.
If a guy has bone stock clutching, he can remove the 50.7 gram 965 ramps and install the 51.0 gram 966 ramp. You’ll observe the engagement speed is 100 rpms lower with the 966 than the 965. The mass is in a wider displacement across the ramp and pull a little harder through the bottom to midrange.
https://www.dootalk.com/forums/topic/1542981-new-ramp-966-low-elevation/
The race handbooks say 47g for the 965 but i've weighed a lot of them and they were 50 grams. I did not use a triple beam but my ohaus scale is a $200 scale and i calibrate it every once in a while.