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Ski-Doo: TURBO Turbo discussion for Ski-Doo aftermarket turbo sleds
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Old 03-13-2018, 12:34 AM
TreeThrasher TreeThrasher is offline
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Default Drivers on 850 turbo

What are you guys using for drivers? 6 tooth avids or going up to 7 tooth?

I have to have the track fiddle string tight and it still ratchets if I hit something and load the track hard in boost

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Old 03-13-2018, 03:18 AM
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Of note... a 7 tooth driver will reduce the lug tip clearance by more than 1/2" (.55")





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Old 03-13-2018, 09:20 PM
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Got myself a set of seven tooth, seams to be pretty common with boost, even on NA it's gotta be pretty dam tight.. Lots of loss to friction with stock drivers and brutal attack angle.. Way to go brp
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Old 03-14-2018, 06:22 PM
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I run the 6 tooth Avid drivers with about a half inch of sag off the rail. They have never ratcheted. Before I had them I ran the track banjo tight and it ratcheted anytime I landed under power.
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Old 03-14-2018, 09:01 PM
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So with the loss of .55 inch of clearance with the 7 tooth driver how tight does that put the clearance of paddle to tunnel?

Anyone care to ponder what is more effective...a smaller driver that bends the track tighter but has additional tunnel clearance, or a larger driver for less rolling resistance but less clearance in the tunnel?

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Old 03-15-2018, 02:10 AM
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Now that.... is a good question !


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Old 03-15-2018, 02:13 PM
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Probably not a question we will ever get a legit answer to. I only know when you put a 3” track in a proclimb Cat with 8t drivers there is very little track to tunnel clearance and the sled performs a lot better than with the 2.6 lug track and 8t that has over .5” clearance.
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Old 03-15-2018, 06:16 PM
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Isn't the stock track fully clipped so that you can run extro's?

Am I behind the times?

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Old 03-15-2018, 06:26 PM
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It has Stock extroverts but the teeth are rounded over and with the single ply flexible tracks and only 6 drive teeth it wants to ratchet bad
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Old 03-15-2018, 06:52 PM
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Old 03-15-2018, 07:45 PM
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Old 03-15-2018, 08:34 PM
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Old 03-15-2018, 08:37 PM
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Old 03-15-2018, 08:59 PM
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