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New Heavy Duty/High performance clutching for My Sidewinder this season

ClutchMaster said:
OMG Dalton has figured this #*$&@ out!
Look at all the cuts below 35 finish angle!
View attachment 151767

For those of you having issues blowing belts on top end and low top speeds, might I suggest a 36/28 helix.
Click to expand...
I was looking at 37/33 I have been running 38 and have ready to try 41/35 or stock 35,i am just thinking that 28 degree finish may be a tad to high,not sure.
 

I think the discussion was for the STM and Pro-4 secondary which uses the old style A/C helix. Not the Yamaha stock secondary.
 
snowbeast said:
I was looking at 37/33 I have been running 38 and have ready to try 41/35 or stock 35,i am just thinking that 28 degree finish may be a tad to high,not sure.
Click to expand...

I’m still standing by my claims that if you parallel is perfectly straight you’ll need a lower
angle helix to top end well and not blow belts at high speeds.
If your motor is slightly tilted forward then higher helix angles can be utilized. Under power the motor will tilt backwards slightly causing the secondary to open up easier.
This becomes more apparent with big tunes pulling the engine back further, causing issues.
 
Ok guys, was up in N. Maine last weekend and got to try out my Set up. Was Brutally cold last weekend up there. Didn’t even make zero degrees both Friday and Saturday.

Silky and super smooth, with great belt grab down low. The sled seemed to get faster/wake up and become more aggressive/responsive as I broke in the new XS825 belt. My TAPP primary Was spinning 8900-9000 RPM which I thought was great with the XS825 brand new. Didn’t get to do that many miles unfortunately, but enough to see where things are.

On Sunday it snowed quite a bit..so we rode only about 60 miles or so that day. After some good aggressive riding, I Checked my clutches, and the TAPP was cold, but the Pro 4 was quite warm. Not hot to where you couldn’t put your hand on it, but plenty warm. This kind of tells me I may have an imbalance, and might have to adjust something.

Should I back the wrap of the secondary off a tad to compensate? Or tighten the wrap up a tad? Maybe the back shift is too aggressive with the TAPP pulling the belt?

Also Noticed what seemed to be a tad of dust here and there on the clutches. Was it brake dust? Or belt dust? I’m not exactly sure?? But if it’s belt dust, then that would indicate some slippage perhaps, and maybe that’s what’s causing the warm secondary?

I wasn’t disappointed with the performance at all...but the warmth of the secondary is what I’m a tad worried about?? I have the Dalton Black/purple secondary in my Pro 4, and 43/34 Dalton helix in.

TAPP Ramps are all on A, and clickers are set on number 3. TAPP engages at 3900, and is very smooth feeling. And as I said the R’s seem spot on for my 240 and 270 SM Tunes.

Any advice on what I should possibly adjust to cool the secondary a tad is appreciated. Or is this a normal condition?
 
Any marks on the secondary indicating slipping? How are your speeds? Belt look like it's slipping? Your RPMs are spot on so this is going to most likely take small adjustments on both sides. I have that spring and although it's heavier wire it seemed a bit soft. Less coils too of I remember correctly than the black lime I'm running.
 
WinterWolf said:
Ok guys, was up in N. Maine last weekend and got to try out my Set up. Was Brutally cold last weekend up there. Didn’t even make zero degrees both Friday and Saturday.

Silky and super smooth, with great belt grab down low. The sled seemed to get faster/wake up and become more aggressive/responsive as I broke in the new XS825 belt. My TAPP primary Was spinning 8900-9000 RPM which I thought was great with the XS825 brand new. Didn’t get to do that many miles unfortunately, but enough to see where things are.

On Sunday it snowed quite a bit..so we rode only about 60 miles or so that day. After some good aggressive riding, I Checked my clutches, and the TAPP was cold, but the Pro 4 was quite warm. Not hot to where you couldn’t put your hand on it, but plenty warm. This kind of tells me I may have an imbalance, and might have to adjust something.

Should I back the wrap of the secondary off a tad to compensate? Or tighten the wrap up a tad? Maybe the back shift is too aggressive with the TAPP pulling the belt?

Also Noticed what seemed to be a tad of dust here and there on the clutches. Was it brake dust? Or belt dust? I’m not exactly sure?? But if it’s belt dust, then that would indicate some slippage perhaps, and maybe that’s what’s causing the warm secondary?

I wasn’t disappointed with the performance at all...but the warmth of the secondary is what I’m a tad worried about?? I have the Dalton Black/purple secondary in my Pro 4, and 43/34 Dalton helix in.

TAPP Ramps are all on A, and clickers are set on number 3. TAPP engages at 3900, and is very smooth feeling. And as I said the R’s seem spot on for my 240 and 270 SM Tunes.

Any advice on what I should possibly adjust to cool the secondary a tad is appreciated. Or is this a normal condition?
Click to expand...

Got my Pro 4 in today from Tom at Tommcat Performance (great guy, great company!), and I have the identical setup as you WinterWolf. Really looking forward to more of your reviews until I get some snow time myself!

TAPP and Pro 4

TAPP and Pro 4

 
WinterWolf said:
Ok guys, was up in N. Maine last weekend and got to try out my Set up. Was Brutally cold last weekend up there. Didn’t even make zero degrees both Friday and Saturday.

Silky and super smooth, with great belt grab down low. The sled seemed to get faster/wake up and become more aggressive/responsive as I broke in the new XS825 belt. My TAPP primary Was spinning 8900-9000 RPM which I thought was great with the XS825 brand new. Didn’t get to do that many miles unfortunately, but enough to see where things are.

On Sunday it snowed quite a bit..so we rode only about 60 miles or so that day. After some good aggressive riding, I Checked my clutches, and the TAPP was cold, but the Pro 4 was quite warm. Not hot to where you couldn’t put your hand on it, but plenty warm. This kind of tells me I may have an imbalance, and might have to adjust something.

Should I back the wrap of the secondary off a tad to compensate? Or tighten the wrap up a tad? Maybe the back shift is too aggressive with the TAPP pulling the belt?

Also Noticed what seemed to be a tad of dust here and there on the clutches. Was it brake dust? Or belt dust? I’m not exactly sure?? But if it’s belt dust, then that would indicate some slippage perhaps, and maybe that’s what’s causing the warm secondary?

I wasn’t disappointed with the performance at all...but the warmth of the secondary is what I’m a tad worried about?? I have the Dalton Black/purple secondary in my Pro 4, and 43/34 Dalton helix in.

TAPP Ramps are all on A, and clickers are set on number 3. TAPP engages at 3900, and is very smooth feeling. And as I said the R’s seem spot on for my 240 and 270 SM Tunes.

Any advice on what I should possibly adjust to cool the secondary a tad is appreciated. Or is this a normal condition?
Click to expand...
I found that the 32 degree finish was necessary to control belt heat on my stm secondary. Pro 4 is similar. Lots of belt dust is normal with the XS belt and this combo.
 
Tcat100 said:
I found that the 32 degree finish was necessary to control belt heat on my stm secondary. Pro 4 is similar. Lots of belt dust is normal with the XS belt and this combo.
Click to expand...

So you’re saying that there is no cure for the belt dust/slippage with a 43/34 combo? I find that hard to believe???
 
Tcat100 said:
I found that the 32 degree finish was necessary to control belt heat on my stm secondary. Pro 4 is similar. Lots of belt dust is normal with the XS belt and this combo.
Click to expand...

If this is the case, what Dalton Helix do you Run then?
 
I couldn't get the 34 to be consistently in control of the belt, even with a stiffer spring. The 32 did it, my secondary sheaves are always clean
 
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snowcaine said:
Got my Pro 4 in today from Tom at Tommcat Performance (great guy, great company!), and I have the identical setup as you WinterWolf. Really looking forward to more of your reviews until I get some snow time myself!

TAPP and Pro 4

TAPP and Pro 4

Click to expand...

Belt looks a little low in the secondary. When setting up mine, the 825 wanted to be about 1mm above the sheaves.
 

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