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quads on car dyno?


medley

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can quads be dynoed on a dynojet car dyno and be accurate? me and a few buddies have access to a couple different car dyno's to play around on and was going to take the quads and strap them down too it. can you also check air/fuel ratios on 2 strokes? we take our cars there and throw the owners $50 and we get the dyno to tune on for the day if it is open.

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for the first part, most likely you cant use a car dyno tune a banshee. the drums might be too heavy and the dynos might not be set up to read the low HP numbers.

yes you can check air/fuel ratios on a 2-stroke, just need the correct setup for that.

thats what i was worried bout was the rollers. i was just wondering if someone has done it and compared. the guy that owns one said he has dynoed quads and was trying to get us to bring them down. i just dont want to get a false number.

Edited by medley
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You can do it on a car dyno. (Mailman has done it plenty of times. He's also run his on Doug's ATV dyno over at D+M.)

Your runs will be longer due to the fact that the wheels weigh more. But the dyno is set up to read that just fine. The hard part is getting your wheels wide enough to hit the rollers. You might need to go with a hard offset rims and wheel spacers. I dyno'd my kids raptor 80's on our ATV dyno. I think they hit @ 3 hp. :jesterlaugh: You wouldn't think the ATV dyno would read that low, but we also did a moped that made 1.37HP. :blink:

If your dynoing...do the A/F readings. It will get your jet settings perfect alot faster. You'll see room for BIG improvements in your piot jetting. Also play with your air screws. They make a bigger difference in your overall tune that most people would think.

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13 to 1 is a good safe setting for sand. You can go a little leaner for MX.

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