Gearing For Tuned Sidewinder

[Fleecer]

That is great to hear Fleecer. You had more power then speed until geared up.

Proves the point that the winders top out at about 126 mph with stock gearing.

I hope to do the same but with machined primary for extra mph with stock gearing.

What muffler with Eco tune?

TD Super Quiet and also have OSP turboflow

 

[waldo1]

did u see the new cat 600 iron dog LE sled has a 21 38 borg warner set up ---- with different clutching - again - the faster u spin - the better u win - a 600 with a 1.81 ratio --- hmmmm - tap out

 

[NYTurbo]

Dri

did u see the new cat 600 iron dog LE sled has a 21 38 borg warner set up ---- with different clutching - again - the faster u spin - the better u win - a 600 with a 1.81 ratio --- hmmmm - tap out

What pitch track and driver size ?

 

[waldo1]

its a 129 1.25 2.86 9 tooth ----- opps --im out of this one - i tryed

 

[ROCKERDAN]

That is great to hear Fleecer. You had more power then speed until geared up.

Proves the point that the winders top out at about 126 mph with stock gearing.

I hope to do the same but with machined primary for extra mph with stock gearing.

What muffler with Eco tune?

You Machined the winder primary for more OD, is this correct?

Dan

 

[Motorhead]

You Machined the winder primary for more OD, is this correct?

Dan

That is the plan. It is part of a tune package with a stock muffler mod, but I need to hear one TODAY before I say yes. A finished package LTE will be finalized today for me to hear.

 

[ROCKERDAN]

That is the plan. It is part of a tune package with a stock muffler mod, but I need to hear one TODAY before I say yes. A finished package LTE will be finalized today for me to hear.

You might reconsider.....

This SW Primary clutch is not like any previous. The outer sheave(Sliding sheave) is LARGER OD then inner sheave. It already has MORE OD then any other stock clutch(Even a tad more then DOO).

If you machine that for even more OD(which i dont think is even needed) you run a very high risk of the belt edge at cog, coming above the INNER fixed sheave, as its a smaller OD. And belt can easily come off/flip then.

I have not had time to mock mine all up without springs yet, but once I get up north that is the first thing I will be doing when I start to dive into the gearing and clutching. Only then will I know exactly how high the belt rides in stock form at full shift out. That smaller OD inner sheave is what has me interested more then any other mock ups on previous sleds.

I machined every previous yamaha primary I ever owned....but wont touch this one.

Dan

 

[Big_Phil]

For those wanting longer gearing, Dave at hurricane can add a link to your stock chain and then you can run a 24 top gear.

I wont be running gearing that tall on my sled tho. Just going by my turbo nytro, being geared around 130mph keeps the sled snappier for trail riding. I had longer gearing in it and I didnt like it as much.

 

[Motorhead]

You might reconsider.....

This SW Primary clutch is not like any previous. The outer sheave(Sliding sheave) is LARGER OD then inner sheave. It already has MORE OD then any other stock clutch(Even a tad more then DOO).

If you machine that for even more OD(which i dont think is even needed) you run a very high risk of the belt edge at cog, coming above the INNER fixed sheave, as its a smaller OD. And belt can easily come off/flip then.

I have not had time to mock mine all up without springs yet, but once I get up north that is the first thing I will be doing when I start to dive into the gearing and clutching. Only then will I know exactly how high the belt rides in stock form at full shift out. That smaller OD inner sheave is what has me interested more then any other mock ups on previous sleds.

I machined every previous yamaha primary I ever owned....but wont touch this one.

Dan

Yes I was on the fence concerning the machined clutch package being offered whereas some say that belt problems could appear if not done correctly, or when compared to a stock reliable primary clutch period.

On the other hand, I have been told by many about the added top end with his machined clutches from years past.

He gave me his simple specs for both primary and secondary and claimed no problems at all from last years winders done.
Talking with him (dealer), he assured me that they have had no issues with his machined clutches and it adds quite a bit of mph compared to stock,without having to install taller gearing.

This is nothing new for them, they have been offering these in a simple and cheap Power up Kit, and with their tune packages. He has many out there from last year on the Winders (winder clutches) with great results.

So I am jumping off that fence and going with a modest 245 tune for his stock mod muffler and clutch package.

Just finished my chain case oil and inspection today,and stayed with the 21 on top for now!

I appreciate your interest and respect your knowledge shared with many on this site, so I hope all works as planned with my 245 tune package, clutches and all. Shall let you know how it works out after I log some miles on it.

Sled is going in Saturday!!!!

 

[ROCKERDAN]

For those wanting longer gearing, Dave at hurricane can add a link to your stock chain and then you can run a 24 top gear.

I wont be running gearing that tall on my sled tho. Just going by my turbo nytro, being geared around 130mph keeps the sled snappier for trail riding. I had longer gearing in it and I didnt like it as much.

Yeah getting up to 24 top is really gonna be poochy on tight trails, and likely hard on belts I would guess.

Even at 130mph with a 22....how often is that? LOL...just for radar days.

Most times I would much rather run stock gears for better snap, but I am not a heavy stud-er so traction can become an issue with these monsters.

 

[DMCTurbo]

Yes I was on the fence concerning the machined clutch package being offered whereas some say that belt problems could appear if not done correctly, or when compared to a stock reliable primary clutch period.

On the other hand, I have been told by many about the added top end with his machined clutches from years past.

He gave me his simple specs for both primary and secondary and claimed no problems at all from last years winders done.
Talking with him (dealer), he assured me that they have had no issues with his machined clutches and it adds quite a bit of mph compared to stock,without having to install taller gearing.

This is nothing new for them, they have been offering these in a simple and cheap Power up Kit, and with their tune packages. He has many out there from last year on the Winders (winder clutches) with great results.

So I am jumping off that fence and going with a modest 245 tune for his stock mod muffler and clutch package.

Just finished my chain case oil and inspection today,and stayed with the 21 on top for now!

I appreciate your interest and respect your knowledge shared with many on this site, so I hope all works as planned with my 245 tune package, clutches and all. Shall let you know how it works out after I log some miles on it.

Sled is going in Saturday!!!!

I can remember reading a post I think from nos-pro about his belt riding out of his primary due to machining his sheave.

 

[ROCKERDAN]

Yes I was on the fence concerning the machined clutch package being offered whereas some say that belt problems could appear if not done correctly, or when compared to a stock reliable primary clutch period.

On the other hand, I have been told by many about the added top end with his machined clutches from years past.

He gave me his simple specs for both primary and secondary and claimed no problems at all from last years winders done.
Talking with him (dealer), he assured me that they have had no issues with his machined clutches and it adds quite a bit of mph compared to stock,without having to install taller gearing.

This is nothing new for them, they have been offering these in a simple and cheap Power up Kit, and with their tune packages. He has many out there from last year on the Winders (winder clutches) with great results.

So I am jumping off that fence and going with a modest 245 tune for his stock mod muffler and clutch package.

Just finished my chain case oil and inspection today,and stayed with the 21 on top for now!

I appreciate your interest and respect your knowledge shared with many on this site, so I hope all works as planned with my 245 tune package, clutches and all. Shall let you know how it works out after I log some miles on it.

Sled is going in Saturday!!!!

This one boggles my mind for sure...Not something I would do.

What is bad about OD is you are really pulling belt down into secondary far, and creating massive heat there. At least with gearing you are not pulling the belt down any lower into secondary, you are doing it thru gears. I wonder how long a belt would last if tapped out of gear, and down so much deeper into OD then a stocker, Cant see a belt living long there.

Id certainly ask him to show you one mocked up with this OD machining, and see where that inside of belt rides to on that inner sheave. I would bet it darn near coming over the top edge. Being that its roughly 1/4 smaller diameter.

Sure would be a good thing to be sure of.

 

[ROCKERDAN]

I can remember reading a post I think from nos-pro about his belt riding out of his primary due to machining his sheave.

Early last fall, Ernie brought up the fact he noticed the sheaves were not same size on his early look over. Ernie is a Yam GURU and faster then most everyone I know, so I took note of that way back then, and first thing I did when I popped my primary off was measure the sheaves. Definitely not a clutch of Yams from prior yrs!


Dan

 

[Motorhead]

This one boggles my mind for sure...Not something I would do.

What is bad about OD is you are really pulling belt down into secondary far, and creating massive heat there. At least with gearing you are not pulling the belt down any lower into secondary, you are doing it thru gears. I wonder how long a belt would last if tapped out of gear, and down so much deeper into OD then a stocker, Cant see a belt living long there.

Id certainly ask him to show you one mocked up with this OD machining, and see where that inside of belt rides to on that inner sheave. I would bet it darn near coming over the top edge. Being that its roughly 1/4 smaller diameter.

Sure would be a good thing to be sure of.

He is very informative, much like you, and I am sure he will explain how high the belt is expected to ride on the shorter sheave. For sure it will be the novice asking the master again, whereas I have pestered him with questions pertaining to his kit, muffler mod, tune used and clutching secrets.

And yes I do agree about being tapped out of gear and worrying about blowing belts if held there.
I would say that is one of my primary concerns with high powered sleds, that and tracks at high speeds for long durations also, not motor problems thanks to 4 strokes. Amazing how much power that rubber can take. I remember thinking (many years ago) when sleds were reaching the 150 hp mark, that both rubbers were nearing their limits. Ha, wrong!!!

So yes, lot’s to think about concerning more power then geared for, or vice-versa as far as belt life goes.

I have to say though, after talking with him, it sounds like he has a strong set up. He is always testing his clutch set ups, on asphalt, grass and snow. Very reputable dude and renowned in business and racing for many years now, not a newbie by any means, and that is why I planned my kit through him.

 

[Motorhead]

I can remember reading a post I think from nos-pro about his belt riding out of his primary due to machining his sheave.

Thanks for that info. Shall try a search of his posts and see if he posted his specs.