Newb, trolling for info

[Grr]

Have lurked here for quite awhile, some of you know me from BCR, dootalk, but this forum seems to have the most users and by far the most experience.

I built a snowhawk/bike/sled and thought some of you would like to check it out. I also have a few questions.

Started off with a wrecked XP 800 154"




Moved the engine over 3.875" and narrowed the entire plastics by 10.3"





Pipe and muffler





Front suspension is a double a arm setup with about 8" of travel. TS ski, modified XM plastics





Total width is 30", also running footpegs, and T-motion rear skid. Weight is 420# full of coolant, and about a gallon of fuel.

 

[Grr]

Anyway im close to getting it done and test riding it. I am curious about the curved track. Being a 16x154x2.25 I am thinking I should probably cut it. But I do like the way the full lug acts when laid over as well.

Curved cut or no? I will be going to a 2.5" track next year as this one has the huge ports in it but that is not in the budget this year. It is quite easy to lay over with the t-motion

 

[SEOINAGE]

Looking forward to a ride report. I wouldn't radius the track till you have ridden it. You might want a more narrow track however.

 

[jskattum606]

Very cool man!
My thoughts are you might want a bigger ski. I think it would help with steep side hills to keep the body work from paneling out. Good luck with the adventure

Also, I wouldn't narrow the track at first. The tunnel is already that wide so the drag on the snow will be affected. If you decide after the first ride it needs track work. Cut all of the outer lugs at a taper first. Then you can't always trim narrow in the future if needed

 

[Himark]

Looks very cool! Get some finished


**Btw, Looks like somebody finally found the cure for XP's lack of wanting to lay over!!!

 

[Grr]

I have gotten a few short test rides, runs good, everything seems to work. I softened the front shock too much so that needs a couple shims put back in and it should work much better.

Steering is a little goofy due to the angle of the steering shaft, but I can make it work better (not perfect but it will do for now) by moving the lower tie rod attachment point a little. The spindle is also flexing with steering input so that needs a little bracing to keep the twist out of it.

Otherwise its coming together well, have one side of the body complete and it brings in the total width of the sled at 28.5", which is under what I was shooting for.

Weight full of fuel is 478#. I have been riding it with half a tank which is about 440# and it is pretty retarded. All of the 60# that has been removed is in front of the seat.

 

[bdoe22]

cool!

Neat build! some great thinking went into that!

 

[Grr]

This info is just FYI in case you are curious

Sled needs about 3-4# of aluminum added to finish bodywork otherwise its done. It has about 5 gallons of fuel.

Weight, 449#. Balance point with 5 gallons of fuel is right at the rear of the chaincase. With a full tank I would put it right in front of the footpeg. Weight with me is 625#

Strap under ski bolt, just to lift it off ground, 204#. Standing on foot pegs, 238# on ski, sitting on seat 211# on ski.

This gives a weight on the track of: 239# no rider, 387# standing on pegs, 414# sitting on seat.

45% on ski empty
38% on ski standing on pegs
33% on ski sitting on seat.

 

[Grr]

No more wheelies, this thing feels retarded at 75 on grass, with the ski a foot off the ground. We better get some snow pretty quick or ill go crazy