Snapped Belt - Firecat 1000 - Page 3 - HCS Snowmobile Forums

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Old 02-13-2013, 06:42 PM   #21 (permalink)
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Only thing is,the rails were straighter on the '03's,maybe with the '04 rails the 10t drivers will hang down a little far for trail riding?
I may have this backwards but a larger diameter driver (10 tooth) should give a lower gear ratio shouldn't it? A smaller driver (9 tooth) should turn the track more times per revolution from the jack shaft shouldn't it?
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Old 02-14-2013, 12:16 AM   #22 (permalink)
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Default Snapped Belt - Firecat 1000

A bigger driver is like bigger tires on a truck, faster speed. Check this out: http://www.arcticchat.com/downloads/...gear_chart.xls


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Old 02-14-2013, 01:19 AM   #23 (permalink)
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Originally Posted by 98 Thundercat View Post
I may have this backwards but a larger diameter driver (10 tooth) should give a lower gear ratio shouldn't it? A smaller driver (9 tooth) should turn the track more times per revolution from the jack shaft shouldn't it?
no..I don't have the gear calculator in front of me but having 10t over 9 t is a pretty good size gear jump up..like higher gearing...kinda like 24-39 vs. 25-39...
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Old 02-17-2013, 09:20 AM   #24 (permalink)
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Only thing is,the rails were straighter on the '03's,maybe with the '04 rails the 10t drivers will hang down a little far for trail riding?

Been running a 04 skid in our f6 eb, no issues, 3 years now, keep the limiters straps pulled up.
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Old 01-23-2015, 12:04 AM   #25 (permalink)
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Running 10T drivers, 24/39 gears 7400-7500 rpm and still ripping belt in half at 114mph on GPS. I market clutches with sharpie and its shifting the entire way out as far as I can tell. XS815 belt. Thinking I should regear if I want more speed?
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Old 01-23-2015, 07:17 AM   #26 (permalink)
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Gear. Rpm. Mph
25/38 @ 7500. =132.08
25/39 @ 7500. =128.69
24/39 @ 7500 =123.54
23/40 @7500 =115.44
22/40 @ 7500. =110.42
22/41 @ 7500. =107.72
22/42 @ 7500. =105.10
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Old 01-23-2015, 08:05 AM   #27 (permalink)
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In theory I shouldn't be out of clutch right?
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Old 01-23-2015, 09:28 AM   #28 (permalink)
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Nope, or gear. Secondary binding and stopping the shift? Hitting the bulkhead maybe, backside?
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Old 01-23-2015, 10:00 AM   #29 (permalink)
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I found the offsetbar didn't work that well messing with this,took off all the orings,and shimmed the driven the old way,and left some float in it.As mentioned,the inside of driven is very close to the hose behind the footwell,make sure the wires are pulled back.

FWIW, If you're running a stock 8"primary,I'm not sure if any of this is going to help you,I only swapped out when I converted to the 8.5".I've heard of guys using the 065 belt on grass to get the lower ratio,with a 8",but not sure if you're going to see any gain at full shift without a larger primary.
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Old 01-23-2015, 11:33 PM   #30 (permalink)
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I'm going to order up an xs814 instead of xs815. Also going to check for twisting with springs out of the clutch. Would love to find 26/37 or 25/35 gears to try too sometime. This thing should show me 120 mph. What kind of belt would I run if I had an 8.5 clutch? Where does one get an 8.5?
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