Big wheels?

[kurzy]

Does a big wheel kit on the rear axel eat up some track adjustment? I just converted to a 136" with Hartman extensions and I am out of adjustment.The track is still pretty loose. The only thing that I can think would cause this, I changed from 9 to 8 tooth drivers just because they were a good deal for anti-ratchet cogs. If the bigger wheels would help, maybe that's my only option... Any input would help.

 

[birdmayon]

The short answer is yes, bigger rear wheels should get you back some of the adjustment, but how much and whether it is enough to make your set-up work, I have no idea.

 

[kurzy]

Thanks, I didn't realise that dropping one tooth would make that much difference! I called Tom Hartman and he said that he sent a package for the stock setup, so it was an error on my part. I had told him mine was stock, but then I got this axel. He is being very helpful about it but I think big wheels are the way to go. It never fails, every project I get into turns into another can of worms, very expensive worms!

 

[birdmayon]

Let us know which wheels you go with and how it works out for you.

 

[birdmayon]

Kurzy,
May want to talk to these guys:

http://psychosled.com/Shop/index.php?ma ... x&cPath=63

They sell offset axles, they may be able to work something out for you that will move the axle and wheels back further.

 

[kurzy]

Thanks Birdmayon, I have been looking everywhere and it seems that Yamahas aren't that easy to fit with oversize wheels. I'm starting to think that it may be smarter to just go with 9-tooth extros. I'll keep looking.

 

[kurzy]

Big Wheels... NOT!

So, I did the research, the math, and decided the way to go was to put 9-tooth extrovert drivers on. It's hard to find offset axels for Nytros and they are not cheap, which I am! On top of that, I wondered if changing the drivers without re-gearing could cause any problems with the computer that controls fuel delivery and timing? Maybe not, but I know that 9-tooth worked for me before. The Hartman extension kit was a fairly easy install and Tom Hartman is incredibly helpful when dealing with.

 

[kurzy]

Nailed It!

Well, I rode 100km today and this what a Nytro should ride like! I've read about hundreds of different Mods. and as far as I'm concerned, the 136" track and Tuner skis make this sled work like I want it to. I don't even have studs and it hooks up like crazy with just a 1 1/4" Ripsaw II. Love it!!!!!!!!!!!