what pressure is anyone who is running any 270 hp tune seeing

[Motorhead]

you are right, i was on 105 from the junction of 90 above Portage to Van Buren and its like the autobon

I heard from some friends that areas in the southern county like Houlton were very fast because of icy conditions, but Where we rode More Northern was just lots of snow and no ice!

We were hoping for icy faster trails instead for middle of winter trails. Had to be 3-4’ of snow up North. I think it will get icy later on this month or beginning of April up there once melting begins to occur!

We hit it like that 2 years in a row, but so far this year, still lots of snow!

Autobon is right!!

Ran that once a day. Wednesday was nice, Thursday just awesome and Friday we were the only tracks on that thing for many miles until before 90 when other town had not groomed it yet, but another 5-6 miles past that others groomed it again. We were in a hurry to get back to our truck in Patten on that day before the rain! And we did race the whole way.

 

[justinator]

both of the Sidewinders i ride with with Max16 and 3 bar are close to same as what you are finding. they are both about 17.5 and about 120mph. my max 16 2bar with header was 16.5-16.6 on a very long WO shot on ITS 86 between Littleton and Oxbow last weekend I walked the other 2 by a lot. i did not have gps but speedo was on 128-129 for quite a distance.

What are you guys running for secondary springs? Im just curious because your speed was good but the others at 120 should be more imo, assumming its 21-41 gears?? Reason I say this is my sled with same tune, yellow spring at 3-3 would hit 110-112 and hit a wall with 24-50 gears and 1.75 track. I decided to try my pink spring in secondary at 6-1 and belt temps averaged about 10 degrees cooler and sled gained 6 mph on top, 116 at 9000rpm. This is with xs belt and literally back to back testing. I was quite surprised the pink spring held the belt, thatis a testament to the grip of the xs belt.

 

[snowbeast]

both of the Sidewinders i ride with with Max16 and 3 bar are close to same as what you are finding. they are both about 17.5 and about 120mph. my max 16 2bar with header was 16.5-16.6 on a very long WO shot on ITS 86 between Littleton and Oxbow last weekend I walked the other 2 by a lot. i did not have gps but speedo was on 128-129 for quite a distance.

Hi JPS,thats awsome speeds on that RR bed,for any tune i bet your gps would have been close to 122 or 123 it seems the faster the sleds goes past 100 the further off the speedo vrs gps appears,but no matter if you have stock 21/41 gears you may have been darn near maxed out,and i sure wish i had a chance to get that speed with mine winder. The winder that you can reel in what pressure does his sled see? It would seem if all things were equeal,that the winder with 16.6 would not be able to pull by one at 17.5 psi,but who knows,i guess anything is possible.

What are you guys running for secondary springs? Im just curious because your speed was good but the others at 120 should be more imo, assumming its 21-41 gears?? Reason I say this is my sled with same tune, yellow spring at 3-3 would hit 110-112 and hit a wall with 24-50 gears and 1.75 track. I decided to try my pink spring in secondary at 6-1 and belt temps averaged about 10 degrees cooler and sled gained 6 mph on top, 116 at 9000rpm. This is with xs belt and literally back to back testing. I was quite surprised the pink spring held the belt, thatis a testament to the grip of the xs belt.

Yes,i was talking to keith woods today from Woody,s about my reverse problem,and he and i shared clutching states,and we spoke about how the xs825 is holding up,and he asked me my opion on the RPM drop,and how many miles of break in till it responds to clutching changes,i said a brand new one may drop as much as 400 rpm until 500 miles or so,its like the belts really shines past 1000 mile mark up to about 2000 on a tuned sled,best belt i have ever run,i have no fear of blowing this belt with 2000 or less miles. So he said i may start setting up my sleds with it,since that belt new even with a tune can still run stock ramps that are slightly modified.

 

[justinator]

Its surprising for sure, that pink spring I tried is wimpy and I thought for sure when I held it wide open it would slip up top and cause some heat but I can watch it “live” with my belt temp gauge and it held it fine. 8JP would of exploded with pink spring with a tune, I blew one at 300 miles when I was running eco trail with that setup.

 

[fourload]

Its surprising for sure, that pink spring I tried is wimpy and I thought for sure when I held it wide open it would slip up top and cause some heat but I can watch it “live” with my belt temp gauge and it held it fine. 8JP would of exploded with pink spring with a tune, I blew one at 300 miles when I was running eco trail with that setup.

Very interesting!What helix? I always wanted to try the pink Apex spring or the white spring but was afraid it would slip bad. How bad was the backshift?

 

[justinator]

Very interesting!What helix? I always wanted to try the pink Apex spring or the white spring but was afraid it would slip bad. How bad was the backshift?

straight 35, To be honest the backshift doesnt feel half bad but the day I tried it I was just doing full throttle runs and then a short trail cruise back home. I tried it on a good condition day for speed and saw a cooler belt and more mph on top end. I dont know on softer or harder working conditions if it will behave the same way. I plan on trying it out. With that being said I would like to get my hands on a dalton pink/white to try. It has slightly more force than the yellow at low compression and then it falls a little lighter than yellow midway and right between yellow and pink at top end...........according to the dalton chart.

 

[fourload]

straight 35, To be honest the backshift doesnt feel half bad but the day I tried it I was just doing full throttle runs and then a short trail cruise back home. I tried it on a good condition day for speed and saw a cooler belt and more mph on top end. I dont know on softer or harder working conditions if it will behave the same way. I plan on trying it out. With that being said I would like to get my hands on a dalton pink/white to try. It has slightly more force than the yellow at low compression and then it falls a little lighter than yellow midway and right between yellow and pink at top end...........according to the dalton chart.

The pink white looks good . I think the White Attack Yama spring would be good also . It has more torsion than the pink. It is fun experimenting. Many years ago I ran soft secondary springs in my SRX’s. Always gave me great mph. Backshift did suffer however.

 

[JPS]

Pics do not really show what the eye sees on those rolling field trails nor the rrbed pics!

should have stopped at different spots for much better depiction of both type trails, but I was lucky we stopped at all! Usually stopped at intersections to decide where to next, rather then picking the best photo op spots!

you are right, i was on 105 from the junction of 90 above Portage to Van Buren and its like the autobon

What are you guys running for secondary springs? Im just curious because your speed was good but the others at 120 should be more imo, assumming its 21-41 gears?? Reason I say this is my sled with same tune, yellow spring at 3-3 would hit 110-112 and hit a wall with 24-50 gears and 1.75 track. I decided to try my pink spring in secondary at 6-1 and belt temps averaged about 10 degrees cooler and sled gained 6 mph on top, 116 at 9000rpm. This is with xs belt and literally back to back testing. I was quite surprised the pink spring held the belt, thatis a testament to the grip of the xs belt.

I am running Heavy Hitters with Thunder orange and TP rollers in primary, i am up to 70.4 grams on the Hitters. secondary has TP rollers, TP orange at 3-1 some times i go to 3-2 depending on conditions TP 33 35 helix. XS 825 belt and i am 1.6 cobra track 141. last week i had 21-41 gear in it, i have tried 22-41 but like the stock gearing better for all conditions.

 

[JPS]

Hi JPS,thats awsome speeds on that RR bed,for any tune i bet your gps would have been close to 122 or 123 it seems the faster the sleds goes past 100 the further off the speedo vrs gps appears,but no matter if you have stock 21/41 gears you may have been darn near maxed out,and i sure wish i had a chance to get that speed with mine winder. The winder that you can reel in what pressure does his sled see? It would seem if all things were equeal,that the winder with 16.6 would not be able to pull by one at 17.5 psi,but who knows,i guess anything is possible.
Yes,i was talking to keith woods today from Woody,s about my reverse problem,and he and i shared clutching states,and we spoke about how the xs825 is holding up,and he asked me my opion on the RPM drop,and how many miles of break in till it responds to clutching changes,i said a brand new one may drop as much as 400 rpm until 500 miles or so,its like the belts really shines past 1000 mile mark up to about 2000 on a tuned sled,best belt i have ever run,i have no fear of blowing this belt with 2000 or less miles. So he said i may start setting up my sleds with it,since that belt new even with a tune can still run stock ramps that are slightly modified.

I lost a little boost when i put on TD header but it is making more power than with stock manifold. the power gain seems to be mid to top with bottom seems the same as it was stock manifold. when going head to head with my friends and we all have MAX16 all are close to between 70-80 MPH then i accelerate to 120 quicker than they do, mine with header has a harder pull which lets me walk the other 2. they still say i am a sucker because it cost me $900 to go a few MPH faster. they used the $900 for gas, beer and steak.

 

[Motorhead]

Have you ever rode Quebec in the Shawinigan area? Endless open farmlands. You can follow the trails as far as the eye can see. A few wooded areas are sprinkled in between. Winders are definitely Quebec machines.

Late response because I did not catch this at first. Just now emptying my phone Inbox and saw this!

No to Shawinigan area, but many years ago when my wife and daughter rode and had their own sleds, we did frequent Canada many times with other friends/families! What a blast St. George, St. Raymond, Quebec City , Letape, etc etc.

I have said it many times. The Maine County trails and their trail system is the best that Maine offers. I would never say that they beat Canada trails, but yes to lot’s of things to think about when one is over there riding. Unbelievable Black Market for sleds trucks and trailers, and the fuel costs were much higher. So it’s been a while since I’ve been but I am certain their trails still rule! Plus we still have decent riding only 1.5 hours from home as we speak.

 

[justinator]

The pink white looks good . I think the White Attack Yama spring would be good also . It has more torsion than the pink. It is fun experimenting. Many years ago I ran soft secondary springs in my SRX’s. Always gave me great mph. Backshift did suffer however.

yes fun to experiment especially since the yamaha secondary is quick to swap springs or wrap on side of trail.
Im gonna try a few more out before settling on one. I 'm not a big top end guy so that wont be a deciding factor for my type of riding but experiencing what I did with the pink opened up a few more options for secondary springs that I didnt think would be good options for the sidewinder.

 

[KnappAttack]

Very interesting!What helix? I always wanted to try the pink Apex spring or the white spring but was afraid it would slip bad. How bad was the backshift?

The old White is pretty much exactly the same as the Yellow on my drill press scale for pressures on a 35 helix. The white is a bit shorter though and hard to wrap up on the winder secondary keeping tangs engaged in clutch and on helix. So may as well forget about using the white and just stick with the Yellow.

The pink is much softer than the Yellow however, but coil binds before the Yellow does. The Yellow also binds right at the end of travel set at 60*, but the drive clutch and belt is already fully shifted out so doesn't matter anyway.

Probably why the pink does not slip on top, because it's already coil bound and out of travel at the end so belt has no choice but to grip the sheaves.

 

[justinator]

The old White is pretty much exactly the same as the Yellow on my drill press scale for pressures on a 35 helix. The white is a bit shorter though and hard to wrap up on the winder secondary keeping tangs engaged in clutch and on helix. So may as well forget about using the white and just stick with the Yellow.

The pink is much softer than the Yellow however, but coil binds before the Yellow does. The Yellow also binds right at the end of travel set at 60*, but the drive clutch and belt is already fully shifted out so doesn't matter anyway.

Probably why the pink does not slip on top, because it's already coil bound and out of travel at the end so belt has no choice but to grip the sheaves.

on my sled I gained 6 mph on top end with pink at 6-1 vs yellow at 3-3 with 35 helix. I assumed the higher finish force of the yellow was holding me back up top since swapping to the pink helped me out on top and the pink is weaker. I didnt mark my sheaves to see the travel but with 24-50 gears I am guessing 116 speedo at 9000ish rpms I must of been near full shift? This is why I was puzzled a bit because as you mentioned the pink is known to bind. Do you have any ideas for springs that you have tested that may top end better than yellow but not bind. I like the feel of the yellow at 3-3 and may continue to use it for my type of riding and setup but cant help but be curious if theres a spring that would work as good through the shift and top end better with my setup. I did try the yellow at 2-3 and it felt the same as 3-3 for the most part but was unable to do a top speed run due to high sled traffic and I had to head home and get ready for work.

 

[snowbeast]

I lost a little boost when i put on TD header but it is making more power than with stock manifold. the power gain seems to be mid to top with bottom seems the same as it was stock manifold. when going head to head with my friends and we all have MAX16 all are close to between 70-80 MPH then i accelerate to 120 quicker than they do, mine with header has a harder pull which lets me walk the other 2. they still say i am a sucker because it cost me $900 to go a few MPH faster. they used the $900 for gas, beer and steak.

Hi again JPS,what size drivers do you have in your 18 xtx? That is the same sled my bud has,although his is bone stock,everything even same stock skis and carbides,his runs good up to 95 or so than falls on face,he has no top end,but again its all stock w/1.6 x 141 lug track,and he is studded lightly 96 i think. Your speeds for a 141 and 1.6 lug track are impressive,yes you are boosted good with header,and after talking to keith woods yesterday,keith also said his Pressure numbers were lower on his Max 17 tune than most are,and he reasoned it was the header as well,but did say it runs very fast compared to others w/17 and not running manifold. You have a beast of a sled,given the 141 and 1.6 track runs those speeds on top Wow,glad its working good for you. Happy Trails Beast.

 

[Motorhead]

you are right, i was on 105 from the junction of 90 above Portage to Van Buren and its like the autobon

I am running Heavy Hitters with Thunder orange and TP rollers in primary, i am up to 70.4 grams on the Hitters. secondary has TP rollers, TP orange at 3-1 some times i go to 3-2 depending on conditions TP 33 35 helix. XS 825 belt and i am 1.6 cobra track 141. last week i had 21-41 gear in it, i have tried 22-41 but like the stock gearing better for all conditions.

Holy crap that is fast for a 141, especially with that 1.6” track.

Buddy had a Ice Cobra 1.6” on his 17 RTX with MaxSpool 16 3 bar /BOV. Lost a lot of top end with that track. He tested with 7/8” track and now 1.22” Ice Attack. Big big differences.

I was impressed thinking you had an 1 1/4” track doing that kind of speed on the snow, but with a 1.6” track that is super impressive setup! That header really adds some hp I’d say.