Please help asap!

Ok guys I am going to explain this the best I can. I was doing a track and driver swap on my nytro. I had some help from a guy that has done a few track swaps and knows his way around a sled. I followed TTabs instructions on how to measure and press the avids on. Everything was going pretty well and we made it past the reverse linkage bump with little problems. Thinking we were in the clear and on the home stretch. Not So! We got it all back together and went to adjust the track and noticed that the drivers were riding on the right side of the track windows. We looked deeper and found the track was rubing on a bolt up front near the suspension mounting point on the left side and the track rides nice in the rear for all the clearances but up front looks out of wack. You can't get your pinky between the track and tunnel up front on the clutch side but you can get your entire thumb in between on the other side. The clearances in between the rear mounting brackets and track are nice and equal. It is really noticable when the sled is on its side and you look through the windows and in the back you see the hyfax fills up the space but up front you see they get off track. What the heck is going on???? We adjusted the track several times and it did move but never solved the issues. It is like I need to take the track at the front of the sled and yank it towards the chain case side only in the front. The way I sit right now the track hits clutch side, drivers hit windows on chain c. side which you would think would want to pull the track away from hitting, and the rails look like they are pointing towards the chaincase side. PLEASE HELP WITH ANY AND ALL IDEAS SOON.

i just installed drivers my self on a nytro and sound like you need to measure twice from the same end of the drive shaft . your drivers are probaly correct on center but to the left or right on the shaft. the only other thing to look at is the bearing on the sppedo side is seated correctly.. good luck

X2
If the bearing is seated on the speedo side, then you have to take the shaft back out and move the drivers to the right position.

Did you measure the center point of the old drivers?
Center should be the same, outsides or insides change because the extros are not as wide.

Thanks for your quick responses! I did measure the center of the old drivers and the center of the new and I understand that they are wider and how that part of the problem could happen. I can move the drivers over but what I am affraid of is the track won't run without rubing on something and right now the drivers are trying to pull the track in the right direction. I also can't maintain equal distances from front to back on the hyfax to the outer drive lugs. The back on both sides are good and when you get up front the clutch side has a lot of room and chain side is rubing outer drive lugs. I need an adjustment to just align the front of the track? Like I said before It is like I need to take the track and skid push it over up front towards the chain case side using the back suspension mounting point as the stationary point. I know some of this may sound crazy. I am honestly lost. I appreciate any additional help. Thank you.

I beleive i have the measurments in the garage will look and get back to you if you still need help do you have a fax machine??

I don't have a fax available to me today but could borrow someones this week. I could give you an email address if that would help? Thank you I appreciate the info.

The specs I have are to install the ski -doo drivers not sure if they would work for you

These are my measurements for Ski-Doo extroverts on the FX Nytro drive shaft:

From the LH side (speedometer side) of the FX Nytro drive shaft

to the centerline of the LH Ski-Doo extrovert driver: 123.8 mm
to the "inside surface" of the LH Ski-Doo extrovert driver: 147.25 mm
to the "inside surface" of the RH Ski-Doo extrovert driver: 325.35 mm
to the centerline of the RH Ski-Doo extrovert driver: 348.8 mm

From the RH side (sprocket side) of the FX Nytro drive shaft

to the centerline of the RH Ski-Doo extrovert driver: 179.9 mm
to the "inside surface" of the RH Ski-Doo extrovert driver: 203.35 mm
to the "inside surface" of the LH Ski-Doo extrovert driver: 381.45 mm
to the centerline of the LH Ski-Doo extrovert driver: 404.9 mm

Distance between the centerlines of the Ski-Doo extroverts: 225 mm
Distance between the "inside surfaces" of the Ski-Doo extroverts: 178.1 mm

I have installed Ski-Doo extroverts according to this on a number of different FX Nytros and they have all lined up perfectly. Regarding my definition of "inside surfaces", these are the surfaces where the measurement "B" is taken according to the attached picture from the Ski-Doo racing manual. You can probably not use my numbers for "inside surfaces" when installing Avid extroverts, but all of the numbers for the centerlines should be exactly the same. Also, do not look at the numbers in the attached picture, these are for Ski-Doos only...

Hope this helps.

Thank you guys for all the great info. I feel armed with much more knowledge to attack this for a second time. I must say a special thank you to Bruce at CBPerformanceparts as he has really gone out of his way to talk me through this. I haven't even bought anything from the guy and he is showing amazing customer service like we have been buddies for years. So once again thank you all for your help. I will keep my fingers crossed on Wednesday as I try to fix the problems.

The cogs are 8 7/8" apart, and no problem for the help Josh.

-Bruce