Thanks!!
Some of the mods
Straightline Pipe/Can, about 11 lbs, very nice sound and not obnoxious
Lite primary clutch, 4 lbs less tha TRA III, WOW -Throttlle response, track response, night and day difference between it and the TRA, 55 mph track speed on the flat at 10,000 ft in CO in 20 inch of fresh from the night before
Plastic, foam, sway bar, about 8 lbs
Oil injection full tank and pump and lines, 10 lbs
OK got over 30 lbs off for $150 for a used clutch, think it was about $500 for pipe/can, this was how it started, I got pretty excited and inspired with this much weight off the front end without really doing anything
Aftermarket Head I recut to about 12.5 to 1
Boyesson power reeds (regular old two stage petals)
Removed the front heat exchanger and filled holes with an aluminum plate, 3 lbs loss counting coolant, rerouted hoses and used 1" thin wall aluminum tubes to replace couple feet of rubber hose, coolant temp stays right at 127 degrees except on hard frozen trail then would go to 145 to 150 for short periods
The only other thing that could lose a fair amount of weight would be a lighter gas tank, because of EPA vapor emissions regs the XP tanks are double wall and way 14 lbs empty!! An aluminum tank with a 50 thou wall of 11 gals would only weigh about 7 or 8 lbs.
My porting, fairly mild, only 195 degree exhaust, 800's and 600SDI 200 or over, did lots of work in aux exhaust ports though and intake side, transfers came perfect, best I have ever seen in a sleeved cylinder
Eliminating the front air box was very difficult, carbon air box and the aluminum frame to hold the nut plates for the cowling
Used Floats on the skis for a Yami app 1/2" shorter than doo to drop the front end so could get flatter angle of attack on skid
Rear skid 33lbs!!!!!!! Two Floats with the rear being a takeoff on a Yami rear arm, about the same thing that Timbersled did, built the rear arm last winter, used a TI front arm from Alternative Impact, incredible piece, have a pair of those tiny wheels for the rail tips between the rails up by the front shock
Slydog PowderHound Skis, worked awesome
Bumper off a XP summit 146 and shortened about 4"
Aux Driving lights from Pep Boys auto, 6 oz for the pair and only about $25 with 35 watt bulbs
LED tailight from Dennis Kirk dirt bike catalog, about $35 and only 3 oz with the carbon fiber mounting plate I made that attachs to the seat with velcro
Swapped the wide front end with a guy with a Summit X
One particluar day at 10000 ft in Colorado a Cat 800 injected used 8 to 9 gallons, 800R with aftermarket head 4 gallons, and mine still jetted so rich in mid that it fowled plugs in a couple days used 5.3 gallons, when its completely dialed should be pretty easy on gas and I don't
think I'll ever need to carry a can with it
It has the same flotation on the track as a 154X but because the front end is about 50 lbs lighter than the 800 and has same size skis that end float a bunch better, the biggest improvement for the sled would be if Camo made a 16 X 137 X 2 track
The goal was to build the ultimate crossover sled that could do everything well and even excell over a lot of stock sleds because of light weight and power to weight ratio, estimated Hp would be conservative 115, next project is to fix my Land & Sea dyno!!!
Its about 80 lbs lighter than a stock 163 X and it makes my wifes 550 rev feel like its made out of lead, think I have her convinced to let me build her one of these with just the basics, head, pipe, tunnel extension and rail extensions, track and summit front end swap and she is demanding electric start
I ran 130/290 spring in the pirmary and 1 heavy washer with 1 to 3 light washers at 10 to 12K ft in CO, secondary Dalton 42/38 helix with doo Green spring (grind off hook) for HPV sec, rate 180/303, clutching worked near perfect, all a total best guess, one light washer was overevving at 8100 to 8300 at 10000 ft, gearing 18/45, next year will try to get an Micro Belmont to make an aluminum 49 for the bottom
Also made a 2mm reducer bushing for the stinger in the pipe and tried it the last day, seemed to work, anyhow sled climbed with the 800's that day although we never found anything big enough that couldn't be climbed. Last time I had this much was years ago when I put a 617 in my Phazer but the weight went up to 445 lbs dry so not even close to this!!!