Belt problems on MCX Nytro's?

[obr]

Anybody have any problems with belts braking on Nytro's?

Alot of guys over here have called me saying thei're belts are blowing like a XP.. Anybody on here uses belts on these? I've never seen a turbo sled not getting alot of miles on a belt, but they say these blow up like there's no tomorrow.... Is there a fix for this, or are they just set up wrong?

Haven't got any Turbomachine at the farm, so kinda hard to help them at this point, but if anybody have experienced this and have a solution, It would be GREATLE appreciated.

 

[DARKO]

There clutching must be out to lunch, or getting serious slippage or when they flip or roll them there getting oil on them. I gotz 3 TNytro's, all MC's in the garage, they have 1221, 1490 and 1520 km's on them and all still on the original belts. A good buddy of mine has 3100 km's on his MC'd Nytro and still same belt as well.

 

[obr]

well, it sounds to me like slippage. They say after they put the secondary to 80 degrees it got better, and will try 90... Only time I've seen belt problems, was on a 310hp Attak 144" that the secondary was out to lunch on...

They say one dealer has used over 100 man hours to figure out the belt problems, but Iæm calling BS... I tried to tell them clutching, so We'll see what comes out of it. I'm not sure how they've geared those sleds either, might be something there too...

Shouldn't be to hard to firgure out if it's clucthing issues. I thought maybe it was a problem with all the sleds, that's why I aksed... But, one thing less to worry about now...

 

[Washy]

1800km on first belt. Turboed from the start, Clutching must be out horribly to blow belts like that. What are they running for clutching.

 

[IRONMAN]

Me and earl only have about 650k on ours, but no belt issues. Sounds like secondary spring to soft. Alpine has one with 2100k on its original belt as well.

 

[up-high]

Are these Nytros with belt problems climbing or lake racing? A turbo on a mile or two lake run can heat up a belt!

 

[Mcx Nytro]

Are these Nytros with belt problems climbing or lake racing? A turbo on a mile or two lake run can heat up a belt!

I did 4 back to back 160 kph runs on Morton Lake with no issues at all

 

[SNOW JW]

Sounds like a crappy install. My Clutches are twice as cold as the other two strokes I ride with.

Again when you pay good money for a good install and a good dealer you get a good setup.

 

[RACINSTATION]

Ditto to all of the above. We have seen outstanding life on Nytro belts. Stock, Supercharged, or Turboed. They run cool and last. Check alignment, deflection and oil spillage.

 

[Zipperno]

These problems have been reported in scandinavia. Could there be the stock differences in clutching/gearing causing this? I do not know how big changes there is on these sleds north-america vs. europe, but my guess is that they are different....Just a tought

//Tom

 

[snowy1]

if they are using the yamaha secondary springs they need to be at 100 degree,s, need smaller rollers in the primary and a more aggressive profile wieght. and more helix angle. thats a good start. need lots of belt pressure.

 

[JKP]

Definitely problems up here this year with all the powder. Problem I have seen is largely snow ingestion and very poor factory screening. A little tape and foam here and there does wonders. In my experience it takes very little snow to destroy a belt and many times people don't pick up on it.

john

 

[obr]

I can find out what setup is different from the US and over here. It's in the Tech Update book. Ususally not much, mostly higher gearing due to the fact that we're setup for sea level.

Once I get a sled here to test, I will fix if it's a clutching issue. Kinda strange if they are running too soft secondary springs, because we've already tested that on the Apex's... And you don't eed to re-invent the wheel just because the sled is named Nytro instead of Apex.... Same primary and secondary, and just a bit less HP...Shouldn't be to hard to figure out a setup...

What they tell me, is that the belts brake more when they are boondocking. Less on the trails. To me that sounds like a setup issue. COULD off course be powder on clutches, but I think they are geared way high, and have WAY to soft secondarys. When they get them in heavier conditions, the belts brake more often. SETUP...What I cannot understand, is that this is such a BIG problem over here? More and more people are chimming in and saying they have this problem. SOMEBODY must know how to setup a couple of clutches over here too, we've been riding turbo's since 2003...

But, since this isn't a big problem for you guys, it must be something done wrong over here...Just now sure what...

 

[Thistledoo]

I stringed out one belt on a crazy deep day....I was having to break trail everywhere because no one else could go anywhere I was doing a hard sidehill on the clutch side and I think maybe some snow got on the belt cause I heard it tick right a way.....It was worth it though....crazy deep day

 

[T-bone(was bigdog162)]

Wow Thistle.......... sweet pic.
As far as the belt issue..... I have had one go on the same sort of long sidehill (lots of sidehills) with about 800km on it. Stock clutching is definitely the culprit & we know it now.

T

 

[flajjpan]

Are we having different gearing here in scandinavia?

 

[Zipperno]

Are we having different gearing here in scandinavia?

Yes, we have 22-40. I think in the us they have 20-40.... Clutching is also different.

 

[flajjpan]

what is different in clutching?

 

[Zipperno]

what is different in clutching?

I am not sure which altitude the north american sleds is setup for. But it may be that they have a different primary spring(G-W-G). They have the same weights but different rivets....the rest is the same.

//Tom