Publish your SRX setup for clutching.

bluemonster1

LIFE MEMBER ONLY ONCE!!!
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Dec 30, 2005
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Howden ,Manitoba,Canada
Lets see what you SRX owners are running in the clutches,primary and secondary setups,gear ratio's and what your rpm's are like and your top speeds.Got to be an ideal set-up that works for most.
 

I know about the setup in the tech pages,but maybe someone on here has amagical setup,that has worked flawlessly for them,I don't know.Just curious I guess,always looking for the ideal setup.
 
If youe looking for top speed don't put a 22t sprocket it the sled will top out at 117mph on radar or gps and then start over reving.
 
8dn-20s with 4.5 rivits in each hole, WWW primary spring, red sec. spring with an RX1 51/43 helix. Haven't had a chance to run it on the lake, just picked it up from CARDGUY a coupe of weeks ago, can't wait til next year. Do you still have snow in MB??
 
I,LL POST EXACT WHATS IN MY 02 FOR YA. WHAT THE HELL DO I CARE. I RUN THIS SLED 1/2 MILE SNO DRAGS. ITS UNSTUDDED. NOW IS THAT A FACTOR ? MAYBE!! UNGODLY TOP END.
8BU-00 WEIGHTS (about 55 grams)
MAXXIMUM PREF. WHISRX- SPRING
HELIX,s I HAVE JUMPED BACK AND FORTH FROM A 50-40 TOO A 51-43
SPRING -GREEN AT 90 TWIST.
STOCK GEARING
STOCK JETTING,- RAN MY VENT TUBES TOO AIR BOX. I USE 100 OCTANE FUEL WITH MANY WOT RUNS. NO DCS ISSUES.
DON,T KNOW TOP SPEED, NEVER CHECKED, THIS IS MY TRAIL SLED. FIELD RACER. BEAT ZILLION OF SLEDS. ALOT HERE SAY 8BU-00 DON,T PULL TOP. THIS DOSE. 3:16 (yammie tony)
 
YAMMIEGOD3:16 said:
I,LL POST EXACT WHATS IN MY 02 FOR YA. WHAT THE HELL DO I CARE. I RUN THIS SLED 1/2 MILE SNO DRAGS. ITS UNSTUDDED. NOW IS THAT A FACTOR ? MAYBE!! UNGODLY TOP END.
8BU-00 WEIGHTS (about 55 grams)
MAXXIMUM PREF. WHISRX- SPRING
HELIX,s I HAVE JUMPED BACK AND FORTH FROM A 50-40 TOO A 51-43
SPRING -GREEN AT 90 TWIST.
STOCK GEARING
STOCK JETTING,- RAN MY VENT TUBES TOO AIR BOX. I USE 100 OCTANE FUEL WITH MANY WOT RUNS. NO DCS ISSUES.
DON,T KNOW TOP SPEED, NEVER CHECKED, THIS IS MY TRAIL SLED. FIELD RACER. BEAT ZILLION OF SLEDS. ALOT HERE SAY 8BU-00 DON,T PULL TOP. THIS DOSE. 3:16 (yammie tony)

Are the srx's not geared for about 110? Why not drop a tooth on the top for half mile runs?3:16 I don't doubt that your sled works well I'm just asking why you kept the stock gearing.
 
JOSH, CAUSE IT WORKS. 1/2 MILE IS REAAAAAAAAAAAL FARR. THINK ABOUT IT. WHY CHANGE ANYTHING WHEN YA CAN PULL AWAY. NOW I AM REALLY CONSIDERING STUDS NEXT YEAR. THAN I MIGHT MAKE GEAR CHANGE. 3:16 (yammie tony)
 
YAMMIEGOD3:16 said:
JOSH, CAUSE IT WORKS. 1/2 MILE IS REAAAAAAAAAAAL FARR. THINK ABOUT IT. WHY CHANGE ANYTHING WHEN YA CAN PULL AWAY. NOW I AM REALLY CONSIDERING STUDS NEXT YEAR. THAN I MIGHT MAKE GEAR CHANGE. 3:16 (yammie tony)

You are right it is REAL FAR, hence the gearing change, Why change anything when ya can pull away????? Why do all the other setup and leave alot of it on the table because your'e under geared?? Maybe I'm wrong on this but a box stock srx is geared for 110.76 and you are'nt going to overdrive that by much even in 10 miles unless you picked up rpm somewhere or cut your clutches.....
 
Even with over-rev or clutched for a few hundred more r's with the 8bu's you would be lucky to see 116 with that gearing. We did a Turk setup with a few small changes, dropped a tooth and saw over the 118 mark and as a measuring stick were pulling a stock in a good state of tune 2002 tcat (one of the few good year tcats) in 2000' and up pulls. That is normally where a tcat will take down an srx.
 
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YOUR THEORY IS RIGHT. YOUR FIELD RESULTS ARE WRONG. IN THE REAL WORLD, EVERYBODY KNOWS A SNOWMOBILE CAN,T RUN WHAT ITS GEARED FOR. UNLESS YOU HAVE THE PERFECT CONDITIONS AND DISTANCE. SO YOUR COREECT, GET THERE FASTER!!! BUT. NO MATTER HOW FARR YOUR RUNNING, THE MAGIC NUMBER IS 8500 ON A SRX, THATS THE BOX YA NEED TOO BE IN, WETHER ITS 500 F.T. OR 1/2 MILE. AS LONG AS YOUR NOT 50 RPM OVER, AND YOUR STILL ACCELERATEING, YOUR NOT TOPED OUT. NOW I AIN,T TOP OUT BECAUSE THATS WHERE I HAVE WON MY RACES. THINK ABOUT IT, HOW MANY GUYS I BEAT RUNNING A SLED THAT HAS KNOW TRACITION PRODUCTS. ITS CALLED LONG LEGS. I ALSO DISAGREE THAT A SRX WWITH 23-38 GEARING IS ONLY GEARED FOR 110. JOSH, WHAT YA THINK A VMAX 4 800 IS GEARED FOR.
SRX -1.65
VMAX 4 800 -1.54
3:16 (yammie tony)
 
MOREL OF THIS STORIE, I SHURE AIN,T GEARING DOWN TOO RUN A LONG DISTANCE. UH NO!!!!!!!!!! MATTER OF FACT I LIKE TOO GEAR UP. 3:16 (yammie tony)
 
sorry just checked my last post, I meant to ADD a tooth on top, my mistake!!

http://www.yamahainfo.com/calculator.php
-Do the math here,that is where I get my figures, unless it is wrong but that is what I go by and I'm getting the same ratios you are.
-I also am able to regularly run my stock F7 out of gear in average conditions.
-A vmax4 stock is geared for about 117 mph with stock clutches, srx 110.76
 
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in all out right condition the stock gearing 23-38 you can go over 120mph on gps or radar.
 


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