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Loll ok! Nice! I was worried when i see the mark.. i’ll trow a .5gram additional on the tip to begin and see how i’ll gain!. Thanks for the advice!

what do you think brock?

Before my last test ride, i marked the primary with a sharpy and the mark get eraser all the way to the top!Almost like i want to flip over.. i was scared of having too much tip weight already! If i don’t need to worried, i’ll add a little spot weld to the tips to see what i can gain!

It pull 8200 steady now flashing 8250 rarely, so i think it’s good!!. Pull awesome low-mid range!. Setup suspension per your spec(brock) realy help me on trail!. Pull to 100mph very fast! Sled can’t go any higher tho.. maybe 102 max if on hard solid pack on a long run! (Gps speed) i’m pretty...

Ok good! So it's on point at 8200, i guess i max out the sled, it pull very good but doing 162 km/h max!! i would love to see a 170 but don't wanna mess with it if i'm good like that!! thanks Brock for all the info!

with no pipe best Rpm still 8300??

Yes!! Just what's stated above!

Loll.. sorry’ 1.76 gear 120-310 spring Modded 66’ weight (to 69.152) 50-44fp 140-220 spring 1.5 degree timing keys Sled is a switch pro-s 16 Studded 1.352 cobra I’m 180 pound with suit! It pull 8200 steady on hard pack and top at about 155-160 km/h gps. Clutch are clean and warm after a pull...

if you where to take off .5 gram, would you do it from the base or the tips? i'm only 100-150 rpm off, maybe a shim under the spring will do !

i trim .5 gram off the base of the weight gain 50-100rpm now i'm at 8150-8200 steady, Sled pull great, still need more top end tho, it struggle to pass 100mph gps.. i was not on hard pack tho.. So the modded 66' (now at 69.152) are doing good in there.. thinking of maybe moving 1/4gram off the...

come back from testing the modded 66' , 8200-8300 steady, higher clutching engagement (too high a bit) seem to pull alot better up top! but a welding broke and it got de-balanced... i'll try to redo them tomorow!! seem to work good from what i see today!

8100 steady pull flashing 8200 rarely... stock pipe. modded 66' goin in right now! just per curiosity what's gonna do. I'm hopping not to change the cam..loll

dammit!..loll look like i have a 50-44f for sale!!".loll Any chance my modded 66' do the tricks? i think the cam is too much for plo snow but on hard pack i'm still supposed to be higher than 160km/h ?? maybe more weight can bring back the mph( on hard pack at least..)

when i'm not on hard pack it feel sluggish!! kinda opposite of last year!

Ok Guy'S, 2 good ride so far (600km) on my new Setup, still need fine tuning tho. On groomed trail all i can see is 153Km/h (gps) and on hardpack the max i'm able to put is 162km/h, Rpm is around 8100 steady and on best pull with very cold temp (-30) was 8200 but just couple of time. Sled seem...

thanks guy's

i have pretty much the same setup (1.76gear, 120/310, 10-68, 50-44fp with 140-220 spring) if i understand correctly a 155-222 spring will be better for top speed?

for a 7.25 inch wheels at the back, do we need an offset axle or it can clear a little bigger wheels?

Curious what problem they have?

it's gonna be Mods 66' !! I'll fab mine this week!! thanks! can'T wait to try the sled with the secondary done!