clutch springs. when to replace??

[Flakey]

I talked to a guy today. He said that he changes both the primary and secondary springs every season cause they wear out.

We are only geting 7300rpm's on stock 70. gram weights. stock springs and everything in an 06 m7.

The guy said the springs are probly worn out and need replaced. There's only 700 miles total on the sled. Is this really the issue or should we drop weight?

PLEASE HELP!!!

 

[likkerpig]

What elevation are you riding with the 70g weights?

I usually do springs every other year because it's a cheap preventive maintenance to make sure they're runnin well. Once I noticed that my sled wouldn't pull RPMs, so I replaced the primary spring. Before it went in, I put the new and old springs on a table next to eachother and you could see the older spring remained compressed slighty vs. the new spring which was to spec. So yes, they do wear out.

 

[boondocker97]

Make sure the belt is in good condition too. An old worn belt will drop some Rs.

 

[Flakey]

Well, we are going to try a new belt. It's probly pretty old.

Also we got the weights centered up with the little allen set screws(they were way off one was even loose) and picked up a shift assist bearing locally. Going to try these changes out next week. Hopefully this will get it where it needs to be.

 

[winter brew]

Make sure the sec spring adjuster didn't back itself out, makes a big difference. I would replace springs every 2 seasons max, every season if your picky about clutching.
70's and a straight 36 is a good setup for around here.....with the stock helix you'll want 68's.

 

[pernikm]

Belts solve 90% of all clutching problems. Clean everything up, check weight bushings, and spider clearances. Remove the springs and check for smooth movement when lighly pressing on one side of the clutch. Then check the unloaded length of the springs. If they are sacked are usually bend to one side or are slightly shorter than spec. put a piece of tape on the tach where it is supposed to shift out and then monitor, monitor, monitor. It is completely rediculous to replace expensive clutch components on a whim. Inspection can tell you what is wrong.