Finally got the altitude chart

[mn.vipernut]

The chart says I not only need to drop some weight in the arms but also change the sprockets and chain. For up to 6500 both sprockets for 6500 and over just the big one but changes require a chain swap.

 

[stingray719]

We run at around 10k and I am not gearing it down. I did knock out the heel and tip rivet as per this chart and more importantly tightened the secondary up. Putting the 153 track on before this weekend and after this weekends trip I should have some more data for ya.

 

[mn.vipernut]

Thank you looking forward to your results.

 

[YamahaTim]

When I went out west with my Nytro I only dropped one ounce in tip weight and no changes in gearing and it was perfect!