Track Speeds "In" Snow

[NM]

One thing i think a LOT of people, espeically the turbo yami crowd is that they swap to smaller drivers when going with bigger tracks..

stock is 10 tooth intro's 2.52 pitch.. 25.2" circumfrance
lots going to 7 tooth 3 pitch = 21" circumfrance... that creates a error factor of 25.2/21 which is 1.2... meaning your speedo is reading 1.2x your actual speed... so say your speedo reads 100mph.... your actual speed is 83 mph.

just food for thought, I know i thought my speed was awsome on my old sled, then i remebered i had that same driver swap... took it back to normal levels..

I have the speedo sensor hooked up on the yamadoo, so ill get some numbers when i take it out!

on spring snow i have seen about 40mph on my 700 rev 151.. m7 153 43mph and 36-38 in deeper snow.

Stock drivers on Nytro and Apex MTX are 7tooth 3 inch pitch. To my knowledge there are no smaller 3 inch pitch drivers. Guys going from the short tracks will be slightly different.

 

[Climbmax]

Ground speed and track speed are 2 different things.
All I know is 100 mph up hill on hardpack (like the Big Dawg drags) is crazy fast for a mountain sled with forced air. Then track speed in 2'+ pow will be 30%less with ground speed less again......but still faster than most chainsaws boosted or not
Happy track speed!! lol
RS

 

[zebiraross]

Stock drivers on Nytro and Apex MTX are 7tooth 3 inch pitch. To my knowledge there are no smaller 3 inch pitch drivers. Guys going from the short tracks will be slightly different.

Exactly.

 

[Bkinz]

My bone stock D7 will only pull 38-40mph with a 163 on a good pull.(in powder,2ft+/-)

 

[Wheel House Motorsports]

Stock drivers on Nytro and Apex MTX are 7tooth 3 inch pitch. To my knowledge there are no smaller 3 inch pitch drivers. Guys going from the short tracks will be slightly different.

sorry, i was just looking at my rx1 ones... they must have changed em.. and maybe the rx1's are only 8 or 9 toothers, either way, i know a lot of people swap drivers for smaller to fit stuff on some sleds and they get WAY confused.. i know a kid whos M1000 was in KPH and he was saying he was pulling 85mph track speed bone stock, i laughed at him but he was convinced.

 

[Turbo Monster]

RX-1 are factory 8 tooth

 

[arcticman31]

Need to turbo I guess

2000 Z-120 with governor bypassed and my 9 year old son riding it.......8mph in 8 inches of the sickest powder you will ever see. Cant wait to put a pipe on it. Pretty sure that will get him like 20mph............Back in the real world though my M8 with an Slp setup pulls a consistent 38 to 42 at 10k in the fluff.

 

[backcountryislife]

09 M1000 141 lightly modded with light clutch work
55-60 (yeah, the little 141 helps that number a bit!)

07 M1000 with pipe, head, porting, 156 CE...
similar numbers, 53-58

09 hcr-t we played with the boost too much to remember where is was in the middle boost ranges, but the highest I remember seeing was 67-69 in deeper, but wet snow (13.5-ish psi)


all numbers between 11,800 & 12,500 feet.

 

[Himark]

sorry, i know a kid whos M1000 was in KPH and he was saying he was pulling 85mph track speed bone stock, i laughed at him but he was convinced.

I woulda laughed so hard I spit beer all over him if i woulda heard that one! Im sure you had a good chuckle for a while!

 

[sledheadd]

Mcx Nytro with 153 maveric (pos) 85-90mph with 162 ce 70-75mph

 

[Pastor]

My ski doo 1000 162" 16" that ran great only had 40-42 in deep snow under a load.

 

[73GOLIATH]

hi
m9 156x2.5 at or above 11,000 58 to 60 mph in deep power at the top
lots of mods and major diet

 

[longhairfreak]

M8T 162x2.5 75 mph M1000T 162x2.5 90 mph in the powder.

 

[TKOOIL]

MCX Nytro,162 16 2.5,shockwave,baker skid, @6000 - 8000
14psi 70-72 mph
16psi 79-81mph
running 50/50 av and premium,long hard pulls
06 summitx 144 dynaport pipe and can clutching bang on same elevation
42 mph

 

[Washy]

MCX Nytro,162 16 2.5,shockwave,baker skid, @6000 - 8000
14psi 70-72 mph
16psi 79-81mph




X 2 Same here.