on a 600 srx run 8bu-00 with 2.4 in tip inner empty
45/39 helix with silver at 60
stock primary spring & add 2-3 engagement shims.
45/39 helix with silver at 60
stock primary spring & add 2-3 engagement shims.
YAMMIEGOD3:16
Active member
RUNNER, I BET THEY WORK AWSOME IN A 600 SRX OF CORSE WITH LESS WEIGHT. 3:16 (yammie tony)RIVERRUNNER said:
Turk said:
Ran that in my 600 for a couple years. Worked good. I seem to remember running a spring with a bit more preload and skipping the shims.
staggs65
Moderator
turk, thanks for clearing that up for me, guess i got some bad info on that one
jabber800
New member
Tony we have been running the BU10"s in our radar run sleds for the past couple years. They have proven to be a winning cobination on a stock 700SRX. Big top end #'s
RIVERRUNNER
Active member
Thanks guys!!! This gives me a couple more setups to ponder!!! What brand helix? I know they can be really different between manufactures. Whats the backshift like?
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Run an average cut helix like a hauck. You don,t get 8bu,s for backshift. Do you want fast acceleration or backshift?
You can not have both...please pick 1 or the other!!!
You can not have both...please pick 1 or the other!!!
RIVERRUNNER
Active member
I just want it to be trailable thats all...thanks again!!!!
then what is a better weight for snow drags with 1.25 track no studs
8BU-00 or 8BU-10
8BU-00 or 8BU-10
onewickedr1
Member
Sorry, havent read all postings but....... your neighbor ran your sled??? Does that sh_t even count in Nordica??? And yes, Nordica is a place. It's just north of Timberland...
YAMMIEGOD3:16
Active member
NO DOUBT 8BU-00 WITH THAT TRACK. 3:16 (yammie tony)needaSRX said:
YAMMIEGOD3:16
Active member
GREAT POINT MIKE. 3:16 (yammie tony)Turk said:
unchained
New member
Whats the diff between 8DN and 8BU's?
unchained said:
HUGE difference. look in the tech section in the clutchig pages. you'll see pictures and specs.
YAMMIEGOD3:16
Active member
FOR STARTERS.
EMPTIE.
8BU-10 -45.41 GRAMS
8DN-20 -42.09 GRAMS
8BU-00 -48.7 GRAMS 3:16 (yammie tony)
EMPTIE.
8BU-10 -45.41 GRAMS
8DN-20 -42.09 GRAMS
8BU-00 -48.7 GRAMS 3:16 (yammie tony)
The curvature of the weight amplifies the aggressiveness. Alltho only 48 grams it shifts out a lot more aggressive then it,s mass indicates. That means you need a lot less weight to achieve proper rpm,s.
unchained
New member
After looking at the graphs it looks obvious that the 8BU-10 has greater upshift force at the end of the ramp in comparison to the 8DN. At a glance the 8DN is deff meatier at the tip so that prob explains why the 8BU-10 curvature/profile allows the belt squeeze with less tip weight than the 8DN-20...
full tilt viper
New member
8bu10's or Heel Clickers?
Yamigod, how do you find the 10's compare to the 40\10 clickers? When I bought my 780 they came with 10's 4.5 in both holes@45\39 helix. The rpms were spot on but they did'nt seem to have that instant snap on the bottom and that wicked backshift that you get with the clickers. For trail riding and drags to 600' what would you go with?
Yamigod, how do you find the 10's compare to the 40\10 clickers? When I bought my 780 they came with 10's 4.5 in both holes@45\39 helix. The rpms were spot on but they did'nt seem to have that instant snap on the bottom and that wicked backshift that you get with the clickers. For trail riding and drags to 600' what would you go with?
YAMMIEGOD3:16
Active member
VIPER, YOUR COMPARISON WOULD BE MORE IN ORDER BETWEEN H/C AND 8BU-00. BOTH AWSOME FOR DRAG RACING WITH THE H/C HAVE A SLIGHT EDGE BECAUSE THEY ARE REAL TUNER FRIENDLY. FOR TRAIL, 8BU-10 ALL THE WAY. FOR SATURDAY AFTERNOON SNOW RACING YOUR BUUDIES , 8BU-10 ALL THE WAY. FOR ICE OR GRASS, THE OTHER TWO. 3:16 (yammie tony)