There was an outcry last season about the use of the High Elevation (hereinafter “H.E.”) ramp in the 850 summit for the 2017 season. Many 850 summits sent all over God’s creation at low elevations, delivered with the H.E. ramp, especially in Scandinavian countries. Over revving…over revving and more over revving, hot and blowing belts.
To help solve this overrev problem for people contacting me, I made; tungsten 9.7 gram and 5.3 gram spacers. Taking the 38mm x 17 gram pivot pin, adding 9.7 grams tungsten with a 2 gram steel made around 28.7 grams. Oh yeah, this pushed their engine speed down to 7900~8000.
With the clutch kit ize testing out at 590 feet, to try to achieve 7900 I ran 38mm pin (17g) + 8.7g tungsten + 5.3g tungsten + 2mm steel spacer (1.1g) Total 32.1 grams.
From the beginning of my 850 tuning journey, my goal has been to learn the personality of the Factory clutching and then see what I can do on my own. After getting ½ a season in, feedback from test pilots, I’m listing out “commonalities” and did not matter if at sea level or high up in Carbondale CO. Ok, this is great, I think there is a way to optimize the factory ramps (like I try to do with most of my clutch kits)
In 2017 BRP offered the 967 H.E. ramp @ 43.5 grams. For 2018 is the new 965 H.E. ramp @ 47.2 grams
Im grateful to BRP for changing the ramps weight making them heavier. Thanks to BRP for answering that call helping lower engine speed with a different weight amount – this helps me out even more. I love Bomber's clutching. :becky: woo!
I’ll upload some L.E. ramp pics later…
To help solve this overrev problem for people contacting me, I made; tungsten 9.7 gram and 5.3 gram spacers. Taking the 38mm x 17 gram pivot pin, adding 9.7 grams tungsten with a 2 gram steel made around 28.7 grams. Oh yeah, this pushed their engine speed down to 7900~8000.
With the clutch kit ize testing out at 590 feet, to try to achieve 7900 I ran 38mm pin (17g) + 8.7g tungsten + 5.3g tungsten + 2mm steel spacer (1.1g) Total 32.1 grams.
From the beginning of my 850 tuning journey, my goal has been to learn the personality of the Factory clutching and then see what I can do on my own. After getting ½ a season in, feedback from test pilots, I’m listing out “commonalities” and did not matter if at sea level or high up in Carbondale CO. Ok, this is great, I think there is a way to optimize the factory ramps (like I try to do with most of my clutch kits)
In 2017 BRP offered the 967 H.E. ramp @ 43.5 grams. For 2018 is the new 965 H.E. ramp @ 47.2 grams
Im grateful to BRP for changing the ramps weight making them heavier. Thanks to BRP for answering that call helping lower engine speed with a different weight amount – this helps me out even more. I love Bomber's clutching. :becky: woo!
I’ll upload some L.E. ramp pics later…
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