Once upon a time, I had a belt blower, then Mike Knapp and Clutchmaster did some magic

[snowdust]

Are you running dalton weights? If yes how many grams and what primary spring?

 

[STAIN]

80 grams. Bronze primary spring. 2 glide washers. 14.5 mm rollers. 270 SMT Hurricane runs 9000 rpms.
I may try slightly larger rollers to smooth my engagement out even further.

 

[Beerman]

I am going on @700 miles on my Cat green spring running a 270 tune. Wrapped at 0-1. Runs great. Just for shits and giggles I unwrapped the spring and set it at 9-1 ---which is lighter wrap due to positions of spring tangs--- ( Thanks Knapp) Went for a 100 miles ride and the sled did not respond anywhere near as well as the 0-1 wrap. When I got back to the trailer I immediately wrapped the spring back to 0-1. Went back out next day for a 135 miles ride and the responsiveness and drive were back.
I started this year trying to use a steeper helix and the softest springs and I could for efficiency and quick shifting. It worked last year with the stock settings and a 225 tune. I am now convinced that the soft springs just wont work @270 hp---I have tried and failed. I am not a lake racer by any means and almost all my trail riding consists of corner to corner blasts. The shallower helix and stiffer springs are working best for me. And over a 1000 miles on a XS825 belt with no dust.
I might get a Dalton white to replace my Cat green just because I believe it will be a better quality spring and I don't know the age of the green spring.

This reminds me that I left out this detail in my initial post - I "feel" my sled is much snappier in the low and mid range now with the 38°/Dalton White @ 0-1 vs. (everything else the same) a 35°/Dalton BLK/ORG @ 6-2.

 

[fatchance]

80 grams. Bronze primary spring. 2 glide washers. 14.5 mm rollers. 270 SMT Hurricane runs 9000 rpms.
I may try slightly larger rollers to smooth my engagement out even further.

Stain give that TP Orange primary spring a try if you have one. Low start rate for nice engagement.

 

[jonlafon1]

So I’m no expert but here’s my 2 cents. Last year I tried the tp orange secondary spring, prior to using this spring I hadn’t blown a belt the whole first season. I blew 3 belts in 500 kms with the tp orange. I had it at the recommended 70 degrees and went as low as 40 degrees. Clutches were smoking hot and I took out 3 belts in one trip. ( I didn’t bring my stock spring with me).

I got home and put in the dalton black orange in and ended up at 3-3. 2000’ pulls back to back to back, cool clutches and no blown belts. I trail ride with this setup and have yet to blow another belt. All this with a 41/35 dalton.

So the other day I thought I’d try the 35 for the hell of it. I wrapped it at 6-1 and went for a ride. I made some good pulls on the rail bed but I could hear it slipping. I stopped and clutches were smoking hot and rubber all over my sheaves.

Maybe I’m out to lunch but my sled seems to work better with more helix and less spring force. Cool clutches all day long. Again my 2 cents.

THIS IS EXACTLY my experience also. Up at cabin now and tried a Cat white for 290 miles. Not impressed.
Straight 38 would think it would like more squeeze. But I’m not convinced. Not trying to make waves on this but I agree with this post.

 

[STAIN]

What tune?????

 

[jonlafon1]

What tune?????

Eco for 6k. Now powertrail last 290 miles. Actually liked the stock secondary spring 6/1 on eco.

 

[Fleecer]

THIS IS EXACTLY my experience also. Up at cabin now and tried a Cat white for 290 miles. Not impressed.
Straight 38 would think it would like more squeeze. But I’m not convinced. Not trying to make waves on this but I agree with this post.

X3...I concur. Testing on the lake last spring, less tension in secondary and light weights in primary netted highest mph.

I'm always willing to try new things, hence I started a Knapattak account and the funds in it will go to testing new ideas. Lol. I just purchased the EPI purple per his post and hope to test soon. I hope this purple spring doesnt end up hanging on the wall with the other 25 springs that didn't work over the years.

By reading this post it almost appears the guys running Dalton weights like soft secondary while guys running STM weights like lots of tension. Am I wrong here??

 

[jonlafon1]

X3...I concur. Testing on the lake last spring, less tension in secondary and light weights in primary netted highest mph.

I'm always willing to try new things, hence I started a Knapattak account and the funds in it will go testing new ideas. Lol. I just purchased the EPI purple per his post and hope to test soon. I hope this purple spring doesnt end up hanging on the wall with the other 25 springs that didn't work over the years.

By reading this post it almost appears the guys running Dalton weights like soft secondary while guys running STM weights like lots of tension. Am I wrong here??

Running HH thunder weights. And I know I’m way light compared to most. I know they ACT heavy but I’m guessing I’m 10 grams under guys using Daltons. I don’t know right now but I think I’m At around 67 grams on HH. I can post exactly if need be but pretty sure around 67

 

[fatchance]

That's just not enough weight to open the clutch with the white spring in there. I'm running HH at 78.9g now. It just plain pulls harder with the weight in there. I will agree 100% it feels more snappy with the lighter weights, but trust me the TD gauge does not lie. Bottom line, It really comes down to personal preference on the type of ride you're looking for.

 

[KnappAttack]

Eco for 6k. Now powertrail last 290 miles. Actually liked the stock secondary spring 6/1 on eco.

Makes sense, neither of those tunes make the big power to NEED a stiffer secondary spring. If it ain't broke, don't fix it.

You only NEED stiffer springs on the big power tunes.

If you have big power and can't keep a hold of the belt on the secondary you HAVE to increase the side pressure for the gripping force needed.

 

[jonlafon1]

That's just not enough weight to open the clutch with the white spring in there. I'm running HH at 78.9g now. It just plain pulls harder with the weight in there. I will agree 100% it feels more snappy with the lighter weights, but trust me the TD gauge does not lie. Bottom line, It really comes down to personal preference on the type of ride you're looking for.

I tried the white cat. I’m about 99% it is to stiff and causing the belt to actually slip the opposite of what most are saying here. I got more dust then I have ever had on this ride. I never had this much with the stocker 6/1. I know most think it’s not enough and I get that. But with my recipe it’s fine with lighter tension in secondary. I really feel the weights are the difference. Not sure maybe the straight 38 helix also. But it’s like if I add more weight I loose the rpm and the punch is weak. It actually goes against clutching 101 so to speak. More helix usually means more spring. But it’s just not the case for me with s straight and the HH. I really don’t know what to say but I do know what works after 6300 miles. I have tried many springs (stiffer more side presure) and it’s just not working.

 

[DMCTurbo]

Makes sense, neither of those tunes make the big power to NEED a stiffer secondary spring. If it ain't broke, don't fix it.

You only NEED stiffer springs on the big power tunes.

If you have big power and can't keep a hold of the belt on the secondary you HAVE to increase the side pressure for the gripping force needed.

24x ISR world drag race champion... awesome having a guy like you offering help to all on here. Much appreciated.

Question. I’ve ran TDS big tunes with the dalton BO and always ended up at 3-3. One thing I’ve always ran lighter weights with lighter primary springs. Could this be why when I try more secondary tension I get major belt slippage? Would I need to use a stiffer primary spring and heavier weights to make it work? I always test with my TD gps so I know what works and what doesn’t.

 

[jonlafon1]

That's just not enough weight to open the clutch with the white spring in there. I'm running HH at 78.9g now. It just plain pulls harder with the weight in there. I will agree 100% it feels more snappy with the lighter weights, but trust me the TD gauge does not lie. Bottom line, It really comes down to personal preference on the type of ride you're looking for.

What tune with that weight on HH? Primary spring and secondary spring?

 

[jonlafon1]

Question. Is the primary suppose to close ABout the same rate the secondary opens? I know the cat white seems like the primary is closing/ gripping belt way to fast for how slow the primary is opening. Correct me if I’m wrong here. But don’t you want the two to open/close about the same rate?