Indy XCR 850? - HCS Snowmobile Forums

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Old 07-01-2019, 11:19 AM   #1 (permalink)
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Default Indy XCR 850?

Just starting to put together my shopping list for the INDY XCR I have on order, and have a few questions.

1. Does anyone know what gear ratio these will be running? Rick will you have a clutch kit put together for these come mid December?

2. I have been using shimmed pro steer ski's on my 17 XCR 800 and they work ok, minimal darting but has anyone had any luck with any aftermarket skis?

3. Being a bigger guy I am assuming I am going to need the heavy torsion springs, does anyone know the torsion spring rates on the XCR's?

4. Studding, on my 17 XCR I was using 144 1.450 gold diggers with the 1.325" track and no tunnel protectors. On the 2020 Indy will I need tunnel protectors?

5. Anyone have any recommendations on a tunnel bag? I went with the heated windshield bag but am on the ropes if I should get a tunnel bag or not.

Any Other Input from you guys would be awesome.
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Old 07-02-2019, 06:55 AM   #2 (permalink)
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gearing has been mimicking the 800's i'am pretty sure this will also be the case with the xcr? at the end of the season we geared one down the same as the 800's. this was on a poor performing 850 that struggled to get much pass 100 mph. and this was one of the 850's that our 800 assault beat badly at a local radar run.

this gear down and clutching woke it up big time. the guy said it scares him now. and it's just sick corner to corner.

so yes we will have a clutch kit for this sled using SLP magnum force weights. they will have a heavier base weight out this fall. we want a little early testing to see if we are going to gear these down? some didn't need it in 2019. but these also were all over the place performance wise? 2020 it's said will be much better? time will tell.
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Old 07-02-2019, 10:41 AM   #3 (permalink)
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Hey Rick how did the Magnum force weights work last season on the 850? I'd assume you had them maxed out on set screws? I'll definitely be looking to get a set for my 850. I was hoping they would have a heavier set.
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Old 07-02-2019, 04:42 PM   #4 (permalink)
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Putting my name on the 'willing to test' sign up sheet...

also lookign for any guidance on setup for freemont friday night run. hopefully my xcr shows up in time...

Quote:
Originally Posted by northstarrick View Post
gearing has been mimicking the 800's i'am pretty sure this will also be the case with the xcr? at the end of the season we geared one down the same as the 800's. this was on a poor performing 850 that struggled to get much pass 100 mph. and this was one of the 850's that our 800 assault beat badly at a local radar run.

this gear down and clutching woke it up big time. the guy said it scares him now. and it's just sick corner to corner.

so yes we will have a clutch kit for this sled using SLP magnum force weights. they will have a heavier base weight out this fall. we want a little early testing to see if we are going to gear these down? some didn't need it in 2019. but these also were all over the place performance wise? 2020 it's said will be much better? time will tell.
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Old 07-02-2019, 05:33 PM   #5 (permalink)
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Quote:
Originally Posted by 1fastpolaris View Post
Hey Rick how did the Magnum force weights work last season on the 850? I'd assume you had them

Imaxed out on set screws? I'll definitely be looking to get a set for my 850. I was hoping they would have a heavier set.
I would think so. I had mine maxed out or minus 1 depending on conditions. And I just have the pre h.o. 800.
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Old 07-03-2019, 06:37 AM   #6 (permalink)
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Quote:
Originally Posted by 1fastpolaris View Post
Hey Rick how did the Magnum force weights work last season on the 850? I'd assume you had them maxed out on set screws? I'll definitely be looking to get a set for my 850. I was hoping they would have a heavier set.
yup maxed out and still turning 8250. we have found and confirmed with some eastern Canada drag racers that these 850's perform the best @ 8000-8050 rpm. guys beat the fastest ski-doo in CANADA ice drag to 660' 6.63 for the poo 6.93 for the doo that's a three tenths spanking.
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Old 07-03-2019, 06:42 AM   #7 (permalink)
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Quote:
Originally Posted by mewaschuk View Post
Putting my name on the 'willing to test' sign up sheet...

also lookign for any guidance on setup for freemont friday night run. hopefully my xcr shows up in time...
gearing will be key. gear for 90 mph tops. with over drive figured in. 2 gram heavier weights, full progressive helix 48/42 or a straight 42 helix. red/ blk. driven. 120/290 or 300 finish drive spring. softer compound belt than the stock one. you want to run out of gear 50' max from the finish. a two degree timing key wakes these up also. you didn't hear this from me. it's illegal but there is no tech. Friday nights. everybody is basically cheating.
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Last edited by northstarrick; 07-03-2019 at 06:44 AM.
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Old 07-08-2019, 01:19 AM   #8 (permalink)
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The Axys love C&As if you’re an aggressive rider.
And ride it first, the XCR is pretty stuff, you might not need different springs.
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Old 07-09-2019, 10:04 AM   #9 (permalink)
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18-19 Mileage: 2000+
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16-17 Mileage: 1652
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Originally Posted by ry3an7 View Post
The Axys love C&As if you’re an aggressive rider.
And ride it first, the XCR is pretty stuff, you might not need different springs.
I have been looking at the C&A's along with the USI x2's as I have used those in the past. I will more than likely run it stock the first year but haydays is right around the corner
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Old 07-09-2019, 10:24 AM   #10 (permalink)
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Quote:
Originally Posted by zecow224 View Post
I have been looking at the C&A's along with the USI x2's as I have used those in the past. I will more than likely run it stock the first year but haydays is right around the corner


Not sure how your 17 was setup but prosteers can be pretty decent once setup properly
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