Does the 280 ramp provide more clamp force and slower rpm gain than the 295 ramp?

Would a straight helix hold down rpms better than ramps?
Do I need both?

PROBLEM: Rpms hold steady (8300) from 0-60mph then they start to climb (9000+) but if I use the throttle to control rpms the sled will accelerate to 115 mph in about 2/3 of a mile. So clutches will shift (not binding)

295 ramps pink-pink (230-350) spring 18.7 g weight beige secondary spring @19lbs 54-47 helix stock gearing

I have the ramps (280) and helix (47) here, just wondering where to start.
Any help?

whats your clickers set on? I would consider running up to 2 more grams weight. what doo you have in it for a primary spring. I`ve run a 230/410 spring 23 grams, 280 ramps and a 54/48 helix at 24 lbs. you have to decide if you want to sort out something with the 295`s (which i`m unfamiler with) or go a different way.........to much top end rpm in your case will be not a aggresive enough finish on your ramp, too little pin weight, or to much primary spring finnish. let the testing begin.

Trial # 1
280 ramps pink-pink (230-350) spring 19.6g pin clicker #3 weight beige secondary spring @19lbs 54-47 helix stock gearing
= 78-7900 rpm from start to 100 mph then 80-8100 to 110-115 mph

Tempature: -4c

Trial # 2
280 ramps pink-pink (230-350) spring 18.9g pin weight clicker #3 beige secondary spring @19lbs 54-47 helix stock gearing
= 7900 rpm from start to 100 mph then 8000 to 110-115 mph

Temp: 0c

the second pass with the lower pin weight the rpms should of been higher, i think it was a fluke. when using 280 ramps for whatever reason , i like to tune around clicker #5....it sounds like your making progress.... you should see the tach in the 8300 to 8500 zone. good luck.

Trial # 3
280 ramps pink-pink (230-350) spring 18.1g pin clicker #3 weight beige secondary spring @19lbs 54-47 helix stock gearing
= 7900 rpm from start to 100 mph then 8000 to 110-115 mph

Everything seems to be very close to trial #2 other that primary clutch temp seem to be warmer ( by touch ).

Temp: -4c

Trial # 4
280 ramps pink-pink (230-350) spring 18.9g pin weight clicker #3 beige secondary spring @19lbs 54-47 helix 26/43 gearing
= 7900 rpm from start to 100 mph then 8100 to 110-115 mph

Temp: -4c

Trial # 5
280 ramps pink-pink (230-350) spring 18.9g pin weight clicker #5 beige secondary spring @19lbs 54-47 helix 25/43 gearing
= 7900 rpm from start to 100 mph then 8200 to 110-115 mph
* engine now revs up much faster
Temp: -4c

Trial # 6
280 ramps pink-pink (230-350) spring 18.9g pin weight clicker #5 beige secondary spring @20lbs 47 helix 25/43 gearing
= 8000 rpm from start to 100 mph then 8700 to 110-115 mph
* engine now pulling better than before
Temp: -4c

Trial # 7
280 ramps pink-pink (230-350) spring 19.4g pin weight clicker #5 beige secondary spring @20lbs 47 helix 25/43 gearing
= 8000 rpm from start to 80 mph then 8600 to 110-115 mph
* engine now seems to be pulling better
Temp: -4c

Trial # 8
280 ramps pink-pink (230-350) spring 21.5g pin weight clicker #5 beige secondary spring @20lbs 47 helix 25/43 gearing
Doubled check belt deflection-- perfect with about 1/8" above secondary.
= 8000 rpm from start to 95 mph then 8400 to 110-115 mph
* engine now revs up much faster
* pulls very hard
** might try 1g more
Temp: -4c

Now my Question is... how do I get start rpms up to 8500 tach?
I could add more weight but I am happy with 8400 rpm finish

Trial # 4
280 ramps pink-pink (230-350) spring 18.9g pin weight clicker #3 beige secondary spring @19lbs 54-47 helix 26/43 gearing
= 7900 rpm from start to 100 mph then 8100 to 110-115 mph

Temp: -4c

Trial # 5
280 ramps pink-pink (230-350) spring 18.9g pin weight clicker #5 beige secondary spring @19lbs 54-47 helix 25/43 gearing
= 7900 rpm from start to 100 mph then 8200 to 110-115 mph
* engine now revs up much faster
Temp: -4c

Trial # 6
280 ramps pink-pink (230-350) spring 18.9g pin weight clicker #5 beige secondary spring @20lbs 47 helix 25/43 gearing
= 8000 rpm from start to 100 mph then 8700 to 110-115 mph
* engine now pulling better than before
Temp: -4c

Trial # 7
280 ramps pink-pink (230-350) spring 19.4g pin weight clicker #5 beige secondary spring @20lbs 47 helix 25/43 gearing
= 8000 rpm from start to 80 mph then 8600 to 110-115 mph
* engine now seems to be pulling better
Temp: -4c

Trial # 8
280 ramps pink-pink (230-350) spring 21.5g pin weight clicker #5 beige secondary spring @20lbs 47 helix 25/43 gearing
Doubled check belt deflection-- perfect with about 1/8" above secondary.
= 8000 rpm from start to 95 mph then 8400 to 110-115 mph
* engine now revs up much faster
* pulls very hard
** might try 1g more
Temp: -4c

Now my Question is... how do I get start rpms up to 8500 tach?
I could add more weight but I am happy with 8400 rpm finish
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Try more pretension on the secondary that should give more engine flash like you desire.
my $.02
Andy