09 nytro break in period rpm's

justinkredible56 · Apr 1, 2010

Took out my new sled for the first time today and worked on getting the rings to seat at all rpm's, noticed that at full throttle I was only taching 7600 rpms max. I'm going to call my dealer tomorrow and see what he thinks but I figured I'd see what yall thought first. Only 14 miles on the sled now, do you think it will allow higher rpm's later in the break in period? Or will clutching changes be my only resolution?
Thanks, Justin

paulharris · Apr 2, 2010

if your dealer set clutches to what yamaha recommends in the book for altitude you are way off. rpms will be way below what they should be and it wont get any better after break in. take it back to your dealer they should know how to change it if they actually ride the nytro

justinkredible56 · Apr 2, 2010

Thanks bud, headed out towards my dealer to ride today, I'll stop by and see if we can get this sorted out. Thanks.

BBNytro · Apr 2, 2010

yes definately will get higher once you get it broke in. Probably should gain about 400 rpms after about 400-500 miles.

motojunkie101 · Apr 2, 2010

BBNytro said:
yes definately will get higher once you get it broke in. Probably should gain about 400 rpms after about 400-500 miles.

This was my experience as well. once it is broke in you'll gain a little.

dexter · Apr 2, 2010

yes rpm will increase some when its broken in

justinkredible56 · Apr 2, 2010

Thanks for the reply guys, I saw 8k once today on a flat trail but that's better from yesterday. I have 80 miles on her now and love the chassis just need a bigger track. The clutches have the right springs in them for mountain riding so I won't mess with it until I have a good 4-500 miles on it.
Thanks again, Justin

justinkredible56 · Apr 4, 2010

I have around 200 miles on it now and I was barely pulling 7500 today. I weigh about 280 pounds with full gear and backpack. What can I do?

paulharris · Apr 4, 2010

i have been through this on the nytro. i can guarantee you the sled will not magically gain 1000 rpm's after it gets broken in. the rpms should be much higher (8800 or so) you need to lighten up the primary weights. tightening up the secondary helps too. with your weight you should also be gearing down the chaincase.

justinkredible56 · Apr 4, 2010

Plan on gearing down to an 18 tooth when I throw a 162 on it, I'll tighten the secondary. What do you suggest for primary weight? I have no idea what the stock primary weights are set at.

acutah · Apr 4, 2010

I experienced the same issue when mine was new. I now have around 800 miles and don't think that I gained any RPM after breakin. I bought a clutch kit from Hartman Inc. It was a complete kit including weights, rollers, springs, helix, and top gear. It made a HUGE difference. Now I am between 8500-8800 on a pull up a steep hill.

justinkredible56 · Apr 4, 2010

acutah said:
I experienced the same issue when mine was new. I now have around 800 miles and don't think that I gained any RPM after breakin. I bought a clutch kit from Hartman Inc. It was a complete kit including weights, rollers, springs, helix, and top gear. It made a HUGE difference. Now I am between 8500-8800 on a pull up a steep hill.

This is what i'm planning on doing but I swore I wouldn't put any money into the sled until it was completely paid off at the end of the summer but, I'm thinkin this might be an exception though.

justinkredible56 · Jan 21, 2011

So an update to an old thread....Looks like I found out what the issue was! After purchasing a custom clutch kit from Hartman and not being able to keep it from burning belts I swapped back to the stock clutching.

I found that the weights are 76g vs. the 66g they should have been stock!

On a side note-Tom Hartman has outstanding customer service. The kit was spot on as far as RPM's I just couldn't keep it from burning belts. I worked with him several times trying to resolve the issue and I'm the only one out of the 100's of kits he sold that even saw a problem burning belts. Great guy and I would do business with him again.

Search

09 nytro break in period rpm's

justinkredible56

Well-known member

paulharris

Well-known member

justinkredible56

Well-known member

BBNytro

Well-known member

motojunkie101

MODERATOR: Premium Member

dexter

Active member

justinkredible56

Well-known member

justinkredible56

Well-known member

paulharris

Well-known member

justinkredible56

Well-known member

acutah

Well-known member

justinkredible56

Well-known member

justinkredible56

Well-known member

Similar threads