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mid 70's Polaris question

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mid 70's Polaris question

Postby Xtreme XC » September 7th, 2006, 11:18 am

Few questions actually...

1. what size are the tracks?

2. Will a newer 121" cleated track fit the cogs?

3. what size diameter is the jackshaft

4. Are the gears splined like newer sleds?

Thanks
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mid 70's Polaris question

Postby ZR800XC » September 7th, 2006, 1:12 pm

Depends on what it is....
The newer sleds like the Centurion, TXL and a few others from 77 up with rubber tracks were 2.52X48 tracks...which yes, a newer track will work. The TXs and other sleds with cleated tracks had the 3.29X35 tracks. Some work would have to be done to make it work, new drivers and some suspension mods

The jackshafts should be 1"...Do you mean can you put on a newer clutch for racing? Ya, it'll go on.

Yup, gears are splined....

So, uh, whatchya trying to make go faster???? Gonna try your hand at running some of the vintage classes???

Couple other guys on here could probably tell ya right what you need, I'm not really a Polaris guru, but I could hook you up with guys to get parts for old timers if you needed anything.


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mid 70's Polaris question

Postby Xtreme XC » September 7th, 2006, 5:58 pm

Hey your not to far from me, my parents lived in Bankers when I was born, moved to Coldwater from there... Thinkin more '74 to '76. Always thought it'd be cool to just put a newer 6/7 hundo in one, leave the outside stock (except upgrade gears/chain and track) and go screw around with people. Don't have anything old at this point in time, I do wish I still had my first sled ('74 340TX) and my dad's old '76 250TX Starfire though.
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mid 70's Polaris question

Postby ZR800XC » September 8th, 2006, 3:18 pm

Probably your best bet would be a 76 TX...It would be new enough that you could make things interchange easily and you could get cosmetic parts for it easy as well. I don't think putting a 2.52X48 121" track would be difficult at all. At most you would have to put a tunnel extension on it. Especially if you're gonna roll the chaincase to put bigger drivers in it and allow room for studs. You could always get a 116" track if you were going all new on it. I wouldn't really recommend running the old cleated track...Get an old vintage up and runnin'! It's always great to see an old sled out on the ice runnin' with the newer stuff. I love trail riding the new iron, the stuff's fast and handles awesome...But there's something about lining up an old timer with the new guys and still hangin' in there!

You guys have a spot to run out on the ice in the winter??? I live up by Devil's Lake now and people really frown on that when too many guys raise hell out there.....

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mid 70's Polaris question

Postby snoking » September 9th, 2006, 7:15 am

they don't like you running on the lake?
when we get out on keelers Bay (lake Champlain VT)on a nice day a lot of people stop to what the drags.
I can't wait to put the F7 up against the 1000 ski-doo's
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mid 70's Polaris question

Postby Xtreme XC » September 9th, 2006, 8:26 am

ZR800XC, I would just use a newer cleated track and chage to wider gears/chain if possible. I wouldn't go through rolling it and converting to a rubber track. This would just be a cheap play toy.

Yeah I've been to Devil's lake a couple times. First time was with my IMP Stk 1000, I also think that was the last year any of the big sleds came. We typically run at Park Lake just NE of Lansing. I do a lot of lake racing. Had 2 different IS 1000's and a PS 1000 that I just sold a year ago. Taking a year off this year but have a 4 cylinder project out of 2 700 Pol twins laying on the bench.
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mid 70's Polaris question

Postby ZR800XC » September 9th, 2006, 9:14 am

snoking...

It's mostly the DNR. They bring up to 12 officers out on busy weekends and don't allow and racing or speeding unless it's on a fenced off track and all the permits have been paid for. Everybody always has alot of fun, but I can't afford to register and buy trail permits all the sleds I bring out to race once or twice a year. Without the proper permits, you have to be all legal...so it kinda shuts down the heads up type racing on the weekends.


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mid 70's Polaris question

Postby snoking » September 9th, 2006, 1:27 pm

they don't mess w/us here unless you are crossing a road
but there are no groomed trails on the island either
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