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What kind of swing arm conc/non conc 98 scrammy 400

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Old 07-12-2006, 10:17 PM
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Default What kind of swing arm conc/non conc 98 scrammy 400

Hello, I was wondering what kind of swingarm I have, It a 1998 scrambler 400 4x4. Any help would be appretiated, Thanks, Brian
 
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Old 07-12-2006, 10:19 PM
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Default What kind of swing arm conc/non conc 98 scrammy 400

Are the front wheels driven by shaft or chain?
 
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Old 07-12-2006, 10:20 PM
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Default What kind of swing arm conc/non conc 98 scrammy 400

Front wheels driven by shaft, 95 had chain
 
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Old 07-12-2006, 10:47 PM
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Default What kind of swing arm conc/non conc 98 scrammy 400

98 was a change over year for the concentric drive. Look at the front sprocket. Is it directly in line with the swingarm pivot point? (where it bolts up) If so, it is concentric. If the swingarm bolts back behind the front sprocket, then its not. All the concentric drive does is put the front sproket and the swingarm pivot point on the same axis. This makes the chain distance stay the same through out the suspension travel. This way you don't have to bottom out the suspension to adjust the chain. Just find the tightest point in the chain and adjust it accordingly. Saves chain life too
 
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Old 07-12-2006, 10:59 PM
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Default What kind of swing arm conc/non conc 98 scrammy 400

Easy way to tell is the non concentric had the rear brake on the outputshaft of the tranny.Concentric is on the axle.
 
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Old 07-12-2006, 11:05 PM
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Default What kind of swing arm conc/non conc 98 scrammy 400

ftwflh, I was thinking that but was scared to say it. Been a while since I had to explain the difference and of the easiest ways to tell I completely went blank on that. I was thinking that but as soon as i said it I would have gave the wrong info. Maybe this guy won't read my lecture on how it works and get right to yours.
 
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Old 07-12-2006, 11:06 PM
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Default What kind of swing arm conc/non conc 98 scrammy 400

Or, if it has stickers on it it says it under the 400 logo on the rear cab right before it meets the front cab, or some models did anyway.
 
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Old 07-13-2006, 04:32 AM
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Default What kind of swing arm conc/non conc 98 scrammy 400

Alright guys thanks, Its a concentric. I know the difference between them but wheeler is not where I am located because I am at a friends house so I couldnt find out, Found parts for it to buy and it was for a concentric swingarm. Whats the better arm? and do I need a chain tensioner?? Someone recommended one for concentric but wasnt sure why. Thanks alot, Brian
 
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Old 07-13-2006, 07:51 AM
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Default What kind of swing arm conc/non conc 98 scrammy 400

On a concentric the tensinor isnt as important as on the non.But it will cut down on chain adjustments and can help if you jump alot.May save a tranny case by letting the chain run looser with less chance of snapping.
 
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Old 07-13-2006, 12:00 PM
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Default What kind of swing arm conc/non conc 98 scrammy 400

Any sport, scrambler, trialblazer etc. that is 2000 or new is concentric.
 


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