Numerous MCX-Nytro questions.

toony · Jan 5, 2010

Washers

Where are you guys putting these washers? My belt is also running low in the sec. Shockwave all buttons are good new springs. How much twist on the sec spring? I'm running purple sec. with 78 gram daltons in prime.

Tuesday · Jan 5, 2010

toony said:
Where are you guys putting these washers? My belt is also running low in the sec. Shockwave all buttons are good new springs. How much twist on the sec spring? I'm running purple sec. with 78 gram daltons in prime.

Pull the secondary off the jack shaft. On the back side of the secondary there are 3 #8 bolts that you can pull off and put shims behind them. The bigger the shim the closer the secondary sheaves will be thus higher/tighter belt.

toony · Jan 6, 2010

Thanks

Thanks for the info. I didn't know you could shim the sec. Belt riding where it should be now.

Tuesday · Jan 6, 2010

Lower then I thought.

SLY · Jan 7, 2010

I notice the 3 bolts also wear faster on the turbo applications, probably due to stiffer secondary springs. So after a couple of seasons if the sled creeps forward at idle check for bolt wear, 3 new bolts is a cheap fix.

Tuesday · Jan 7, 2010

You would think if the bolts where wearing out it would ride higher with less shim? That is, the bolts would be shorter. I have been busy renovating and havent had a chance to change the the shims to just 1mm and go for a test ride. Its also been too dam cold! Supposed to warm up this weekend.

Later

toony · Jan 8, 2010

Sec.

Dumb question...Are you guys twisting the sec spring clockwise or counter?

Tuesday · Jan 8, 2010

It only goes clockwise.

Tuesday · Jan 13, 2010

Well sure enough I finally checked the shockwave and that pin was starting to work its way back. I wonder if that happened when I was changing the spring. Only the one pin was working its way out.

Also none of the pins have c clips or anything to hold them except pressure is that normal?

Still havent done a test run to see what the rpms are at.

dexter · Jan 13, 2010

all the pins should have clips. they seem to come off when belt frays hit them, poor design. i check mine after every ride

Tuesday · Jan 13, 2010

You can definitely see the clips on the shockwave website. Good call AC

Brutis20 · Nov 29, 2010

So how did this set-up work for you? Any recommendations. I am talking about the clutching part of this post.

Thanks

Tuesday · Nov 30, 2010

They nytro fluctuate rpm more then most. I found with the mentioned clutching set up that the rpms where more consistent once I started running the 270hp set up. I plan to do some more testing this year to try and get things nailed down.

Good news on the 4 stroke is the top of the dyno chart it makes decent hp over a relatively large amount of rpm. 8400-8900 is pretty close. With the mcx data logger you can definately see the rpms jumping all over the place but as long as most are around 8700 it is pulling pretty hard.

GL-without the display you are taking your life in your hands trying to watch the rpms on that small display at full boost! :face-icon-small-sho

Search

Numerous MCX-Nytro questions.

toony

Well-known member

Tuesday

Well-known member

toony

Well-known member

Tuesday

Well-known member

SLY

Free Member

Tuesday

Well-known member

toony

Well-known member

Tuesday

Well-known member

Tuesday

Well-known member

dexter

Active member

Tuesday

Well-known member

Brutis20

Member

Tuesday

Well-known member

Similar threads