Lowest milage you have gotten out of a belt?

[Wheel House Motorsports]

Everyone is always bragging how they get 100000 miles out of belts.

Whats the worst you have ever gotten out of a belt?

Brand new 2018 axys in some over the hood pow and basically nonstop WOT barely moving conditions.

stock belt 62 miles

gates non carbon (G) belt ~6 miles

 

[icr]

35 miles. First ride on 2018, deflection adjuster backed out.

 

[SRXSRULE]

Ive blown a few in 20-30 miles. Super deep day, brand new belts not broke in and WOT with very little cool down time.

The thing I cant understand is that over 10 years ago we could boost a yamaha 4-stroke and make 250-400hp and just hammer on the things and you would NEVER blow a belt. That 8DN belt was bomb proof. Even before the 4-strokes, that belt on my 700MM with Nitrous..... We had a SUPER deep day, WOT, on the button non-stop, ran through 12gal of fuel in 35 miles, even blew the burst disk on my bottle because under hood temps got too high. Belt was fine. lol

 

[Wheel House Motorsports]

35 miles. First ride on 2018, deflection adjuster backed out.

I noticed mine was squeaking when getting to low speeds, caught mine before it came totally out. That stacks the heat up FAST!!

 

[Wheel House Motorsports]

The thing I cant understand is that over 10 years ago we could boost a yamaha 4-stroke and make 250-400hp and just hammer on the things and you would NEVER blow a belt. That 8DN belt was bomb proof. Even before the 4-strokes, that belt on my 700MM with Nitrous..... We had a SUPER deep day, WOT, on the button non-stop, ran through 12gal of fuel in 35 miles, even blew the burst disk on my bottle because under hood temps got too high. Belt was fine. lol

I think some of this is the clutch logic that was used heavily on the boosted yami setups was WAY lighter and moderate helix angle. Shoot, guys were running 200+ hp at elevation on like 60 gram weights. Most popular primary spring i recall is the BWB yami one, its a 100/240. SOOO light compared to where we are right now on stock stuff. Isnt the new DOO primary spring like 400 finish or something insane like that. Secondary spring was like 80-140 (you could torsionally load it some) but its wild to think you could hold back double the HP with half the spring setups.

Shoot, you could yank the belt and pull the secondary open on a lot of turbo yami setups holding back 300 HP! Its like we've gotten into this stiff/heavy clutching phase and it just makes heat.

 

[damx]

2 gates belts about 20-30 miles each. I could never get over 200 miles on a belt. This is on my 16 axys. My pro was 150 ish for a belt. Im a believer on the lighter springs and shallow angle helix. After i got my sled clutched this way ,I can get 400-500 miles on a belt now, they just don't perform 100% after 350-400 miles. These steep helix's heavy spring rates need to go imo.

 

[Teth-Air]

2 gates belts about 20-30 miles each. I could never get over 200 miles on a belt. This is on my 16 axys. My pro was 150 ish for a belt. Im a believer on the lighter springs and shallow angle helix. After i got my sled clutched this way ,I can get 400-500 miles on a belt now, they just don't perform 100% after 350-400 miles. These steep helix's heavy spring rates need to go imo.

Quick-Drive? When gearing down we see double clutch belt life typically.

 

[tdbaugha]

I think some of this is the clutch logic that was used heavily on the boosted yami setups was WAY lighter and moderate helix angle. Shoot, guys were running 200+ hp at elevation on like 60 gram weights. Most popular primary spring i recall is the BWB yami one, its a 100/240. SOOO light compared to where we are right now on stock stuff. Isnt the new DOO primary spring like 400 finish or something insane like that. Secondary spring was like 80-140 (you could torsionally load it some) but its wild to think you could hold back double the HP with half the spring setups.

Shoot, you could yank the belt and pull the secondary open on a lot of turbo yami setups holding back 300 HP! Its like we've gotten into this stiff/heavy clutching phase and it just makes heat.

I’m down to running a 100-200 secondary spring and a 140-285 primary. Basically the lightest springs they make for these Polaris clutches. Belt life is great now

 

[Teth-Air]

I’m down to running a 100-200 secondary spring and a 140-285 primary. Basically the lightest springs they make for these Polaris clutches. Belt life is great now

So the big questions is "Do light springs and weights increase clutch component life span?" I say the rollers and ramps should last longer for sure.

 

[damx]

Yes it's a quick drive axys and it's also got a tki set up on it. Im using the 140-200 secondary.

 

[TRS]

I think some of this is the clutch logic that was used heavily on the boosted yami setups was WAY lighter and moderate helix angle. Shoot, guys were running 200+ hp at elevation on like 60 gram weights. Most popular primary spring i recall is the BWB yami one, its a 100/240. SOOO light compared to where we are right now on stock stuff. Isnt the new DOO primary spring like 400 finish or something insane like that. Secondary spring was like 80-140 (you could torsionally load it some) but its wild to think you could hold back double the HP with half the spring setups.

Shoot, you could yank the belt and pull the secondary open on a lot of turbo yami setups holding back 300 HP! Its like we've gotten into this stiff/heavy clutching phase and it just makes heat.

Nick,
I’ve been preaching that for a long time. There are light springs front and back on my ‘18 with low angle helix. Your on the right track.

Here is a pic after just a short haul today on the trailer, not good. And you know mine lives is the shop at night.

 

[DITCHBANGER]

years ago on my rev ran a 100-200 pri spring, and a hyperlite secondary with a blue spring, incredible belt life and clutchs always luke warm. I agree there is way to much spring being used nowadays..a 400lb primary spring is just nuts

 

[Snowmow]

What benefit do you see from these heavy springs?

High engagement-snappy feel?


Steep helix and high rate spring in secondary seem to contradict each other. But I really don’t have a clue.

 

[revrider07]

Manufacturer's want to say they have higher numbers than the next one. Gives them a warm fuzzy feeling for the engineers.

 

[Sage Crusher]

Manufacturer's want to say they have higher numbers than the next one. Gives them a warm fuzzy feeling for the engineers.

.... And to increase sales........Don't fall for it!!

 

[sledhead_24_7]

Back in the 900 RMK days I was blowing five belts a day, ( good thing for warranty) broke down clutch parts at a minimum of every weekend. But those hogs were famous for belts, melted air boxes, dead clutch bushings and such.

A good average for me over the past several sleds is 350-400 before a string pops out.

 

[Wheel House Motorsports]

Nick,
I’ve been preaching that for a long time. There are light springs front and back on my ‘18 with low angle helix. Your on the right track.

Here is a pic after just a short haul today on the trailer, not good. And you know mine lives is the shop at night.

Thats gross! IM sure in some cold fluffy MT/WY snow thats just feeding the slippage fire all day. I was noticing some gaps in mine in front of the primary too, time to clean it up and bust out the lexal and seal the plastic to the bulkehad.

I did order Dans kit for my turbo sled but since that one is for sale I might have him switch it around and build me something for my current NA sled. I was out again today in 2' of fluff and i can get the clutches BOILING hot in just a few minutes. If I don't get ambition and get stuck a lot my belts are doomed. It runs insanely good and hauls the mail, but I know im leaving power on the table if im making this kinda heat.

 

[damx]

On the belt guard thing that the oil tank sits on, there is a hole kind of in the middle of it. Oil tank hides it. Put tape over this hole as I have seen water dripping on the clutches from there. Also rvt the bulkhead to body panels. I take a flashlight and shine it between the bodywork and bulkhead. if you see light, seal it up.

 

[plumnuts]

2-3 miles

In the early 2008 Doo XP days... 10 miles and you NEVER went WOT in deep snow

 

[Sheetmetalfab]

On the belt guard thing that the oil tank sits on, there is a hole kind of in the middle of it. Oil tank hides it. Put tape over this hole as I have seen water dripping on the clutches from there. Also rvt the bulkhead to body panels. I take a flashlight and shine it between the bodywork and bulkhead. if you see light, seal it up.

I’ll have to do the tape trick.

I noticed good improvement from footwell block offs, soft rags above the clutch cover to block snow coming in from the hood vents(tie a knot around the overstructure) , and sealing the belly pan.

Stock axys will not waterskip worth #%€>#.
That’s your clue.