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If you are driving on real hard packed snow, the INDY chassis gets hot. They are not as bad as the IQ Chassis but still get hot easy. Scratchers will fix it!

Can't tell how far behind they are ?? And what's done to the AXYS?

Brett you've got that 660 kit working damn good. Good job!

Is that Canadian or US pricing? I am interested in the pipe depending on the Answer. Thanks

Well I tune every time I am out with whatever 1 of my sleds I am on. And I Attach the helmet cam before I leave. My contour is black, it blends in with my Black helmet lol Ya gotta have the evidence because the one time someone beats ya out of 10, you can be sure them fuggers will post that...

Why does No one ever get videos racing?? Guess I'll have to whoop some 850s this weekend and get the helmet cam rolling!

I havent tuned a Pro-S as of yet but the hot setup guys seem to be using for your sled is a 50/42 Fully Progressive Helix and a 140/200 or 140/220 Spring.

If you havent got the cylinders off yet... They will come off without removing the overstructure but getting them in you need to remove the overstructure. Remove the 4 bolts holding the 2 parts of the overstructure on, and theres 2 bolts at the bottm of the cross tube above the Exhaust facing to...

The 11 series load heavier in the Bottom and Mid range. Much better pull. But less top end. Good for hard hitting corner to corner but they get lazy after roughly 90mph. The Dalton QAP3s are an excellent choice for weights, you can adjust very quickly at trail side without removing the weights...

For the 140 vs 165 start rate, the 165 will engage approx 250 RPMs higher. Your wide open RPMs on those 2 springs should stay the same. The finish angles for every increase in 10 giives 100 RPMs at wide open throttle. EX: 310 vs 320 finish.

Dave just wait and Sno-Check the 129" or 137" SB they come out with with the IGX Skid

Just read a post yesterday about the same situation, someone put a borescope down and had a look at the Exhaust valve position while hooked up to the digital wrench. Although the Digital wrench was saying the valves were in the proper position, the bore scope showed differently. They backed off...

If you guys are trying to use the 11 series weights, i find you need a higher finish on the primary spring. Also stiffer on the secondary. Now for my 800s, I can pull 11-66s with a 140/340 primary spring in my Stock motor INDY with a 54/42 helix, 140/240 spring. Modded INDY pulls a 54/44...

I agree with what you are saying. But when my Wife is driving it and shes cruising steady at 5300-5800 RPMS then its running in the 13s then no way am i leaving that air fuel ratio lean. 13s at cruising down the trails is a bad thing.

INDY 800 Lean Mid Range So a couple, weeks ago I put an air fuel Guage on my 2015 INDY 800 on the stock pipe. It has V-Force3R reeds. I wanted to see the midrange Air Fuel ratio because my wife will be driving this sled a lot as I sold her 600. I don't know why these engines haven't been going...

KOSO guage is also a very nice unit. Bright and visible.

Thanks!

Brock could you email me a larger file size copy of this. I can't read the numbers and even when i save it and zoom in its all blurry. Probably because of the reduced file size for posting on the site. eddiecampbell750@hotmail.com Thanks

Thanks Brock. I'll have to wait until I get the clutch to order the springs. Forgot about the Tabbed and non tabbed springs.

Anyone have the P2 Spring chart with rates and part numbers?