|XFire 128/Firecat(03-06 & 09-?) This is a brand-specific forum. Posts on this forum are assumed to be questions aimed at similar model owners, and are not looking for comments of a sarcastic or "bashing" nature. Please be aware that if you violate this policy you are in danger of losing your posting privileges on this website.The calling out or posting of another members personal information IE phone number or address is prohibited.|
|01-03-2020, 08:23 AM||#1 (permalink)|
Join Date: Jan 2018
Location: Northern michigan
Primary spring suggestion for 1000
Sled is an 09 cfr 1000, 136 ext. Came with a BMP torsional kit. Yellow spring in secondary, blue in primary.
It grabs later and harder than I would like, around 4500 rpms. Makes low speed maneuverability difficult. I already took primary apart, cleaned, and made sure everything was smooth.
Here are the spring rates I have found-
Bmp blue-140-300 (installed)
My brother sent me two from speedworx.
They are 120-310 and 125-340.
125 would prob be perfect however idk what the downside would be to using a much higher compressed rate (340). The secondary mostly controls the shifting right?
It has BMP's adjustable primary weights, but I do not know how much weight is installed. I'm assuming that's more of a fine tuning aid. Unless they are way off....
Also, I do not know if all those spring rates are specified at equal compression heights.
I just want to lower my launch rpm a little and of course not overspeed my engine. Although I do not rip across lakes and am rarely above 70 mph.
|01-03-2020, 03:53 PM||#2 (permalink)|
Super Advanced Member
Join Date: Dec 2013
Current Sled(s): 19 ZR8000 RR, 18 High Country 8000 LTD, 11 Z1
Previous Sled(s): Too many to list
Location: West Quebec
Favorite Riding Area: Quebec
19-20 Mileage: 4200
18-19 Mileage: 3800
17-18 Mileage: 2600
16-17 Mileage: 2400
Riding Since: 66
I used the yellow white Cat in the drive clutch and an orange in the secondary. Worked nice and still with enough rpms to launch it well but not to high. No torsional set up all stock.