2020 se top speed

[hellflyer]

I had my stock gears and chain replaced with 24/50 set from the dealer. The initial pull is noticeably more responsive than my buddy’s 18 but it falls flat at 105mph. My turbo viper with same gearing would top out at 115 ish with machined clutches. I feel I’m getting spring binding in secondary. Top 3/8 of my primary isn’t seeing the belt and my top rpm was at 9460 when I checked it today which is way out to lunch. I did just receive a dalton black/orange sec spring to try. Anybody have any input?

 

[jonlafon1]

Stock helix and weights? Rpm is to high @9460. Those gears are not stock so I see no way the stock clutching components will mesh with those gears. You will have to to some clutching components change. M2C

 

[74Nitro]

Those gears will GPS 118-120
I've done it with stock springs and slightly modified stock weights.
Are you tuned?

 

[yamamarc]

Andy bring your sled here and lets tune that sob and you'll max those gears in short distances

 

[hellflyer]

No tune yet! I’ll have to pay more attention to rpms next time out on a lake and see what’s really happening. It’s all stock

 

[hellflyer]

Looks like the stock pink spring binds when fully compressed. Put the dalton black orange in and get the secondary open almost 1/8” more.

 

[yamamarc]

No tune yet! I’ll have to pay more attention to rpms next time out on a lake and see what’s really happening. It’s all stock

Haha just poking!!!

 

[mooser17]

Looks like the stock pink spring binds when fully compressed. Put the dalton black orange in and get the secondary open almost 1/8” more.

I noticed my stock primary spring is binding also, going too try a dalton black /red or red I think. Not tuning sled as Yamaha is cracking down on warranty claims this year. Mine has a factory faulty turbo and they are replacing it but Yamaha is requiring that my ecu data be sent in. Thankfully it's all stock.

 

[hellflyer]

I noticed my stock primary spring is binding also, going too try a dalton black /red or red I think. Not tuning sled as Yamaha is cracking down on warranty claims this year. Mine has a factory faulty turbo and they are replacing it but Yamaha is requiring that my ecu data be sent in. Thankfully it's all stock.

That’s why I’ve been reluctant in tuning it also! I have 4yr warranty but don’t know how long I can hold off ?

 

[mooser17]

I have 4 year also. And really dont wanna gamble with the warranty. I had cats before and they were tuned and then cat started there pinch on the warranty items my dealer ended up leaving me in the dark in 2014 so that's when I sold it and went back too skidoo till this new sidewinder came out in 17. And it had tons of warranty issues over my 3 years with it. And my 2020 has spent more time in the shop so far than on the trails. So definitely not screwing around with the warranty.

 

[Joseph Levandoski]

Yamaha can't deny your warranty simply because you tuned the sled.

 

[mooser17]

If it's a engine or drive terrain or turbo issue pretty sure they will deny cant say I blame them. I'm glad mine is stock

 

[Joseph Levandoski]

If it's a engine or drive terrain or turbo issue pretty sure they will deny cant say I blame them. I'm glad mine is stock

Under the Magnuson-Moss Warranty Act, Yamaha and/or your dealer must show that the aftermarket equipment (whether it be a tuned ECU, aftermarket clutching, etc.) caused the need for repairs before denying warranty coverage. In this particular case though, it sounds like you need to work on some clutching to bring those RPMs down.

 

[mooser17]

My rpms are low , have hardly ridden sled as its had nothing but issues.
1-Overheating constantly
2-turbo failed
3-rear suspension is getting new torsion springs and two shocks.
1000km on sled I think I'm upto 1500km taking it to dealer in truck. Pretty sure I got a lemon

 

[Joseph Levandoski]

My rpms are low , have hardly ridden sled as its had nothing but issues.
1-Overheating constantly
2-turbo failed
3-rear suspension is getting new torsion springs and two shocks.
1000km on sled I think I'm upto 1500km taking it to dealer in truck. Pretty sure I got a lemon

1. How much are you idling, running on low snow, or dipping off the trail a bit to pull snow onto the heat exchangers? You've got to treat these 'Winders like the RX-1s since there's no fan to pull in cold air and they need lots of loose snow to keep those temps cool.
2. Before you shut down the sled, do you let it idle for a minute or two before hitting the kill switch or turning the key? The turbocharger is spinning at 150,000+ RPM and only receives oil when the engine is running. Imagine coming from a long pull where the turbo is spinning like a banshee and you pull over to stop, immediately shutting off the engine and stopping that flow of oil to the bearings. Sure the coolant still flows, but that doesn't come close to helping the bearings inside the unit.
3. I can't offer any help there since I'm not familiar with your trails or how you ride.

I hope this doesn't sound aggressive - sometimes you have to take your brain out and look at it from a different perspective. The amenities we demand from the manufacturers require some compromises - a designer's dream is an engineer's nightmare.