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Old 12-13-2010, 08:13 PM   #1 (permalink)
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Thumbs up New belt design

Hi all, a new belt design is comming in 2012 that will (theory) have 10% less power dissipation in the accessory drive..

i think that i should mention it here.

If you want more detail, you should check that very good mag in england.

Engine Technology International p78

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Old 12-14-2010, 01:44 AM   #2 (permalink)
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Engine Technology International - January 2011

It says accessory drive accounts for 13% of an engine's frictional losses. They've reduced losses by using a more flexible material and a lower profile (thinner) design. I think it's kinda splitting hairs but hey, why not do it anyway if you can?
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Old 12-14-2010, 02:19 AM   #3 (permalink)
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That's pretty cool, for ecomodders and horsepower junkies alike. Now people can add low drag belts to their mod lists.
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Old 12-14-2010, 09:28 PM   #4 (permalink)
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Hope it will sell for the same price?
It is better then nothing..
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Old 12-14-2010, 10:12 PM   #5 (permalink)
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Originally Posted by Matrix2004 View Post
Hope it will sell for the same price?
It is better then nothing..
I hope it will be made for old cars like mine. I think they are mostly targeting OEMs. If an engine is losing 13% to a traditional belt and these are 10% better, then that's 13%*10% => 1.3% improvement. The implication is that if one of us was getting 50 MPG at 35 MPH, we could get 50.65 MPG at the same speed.

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Old 12-14-2010, 10:36 PM   #6 (permalink)
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^I don't think we can infer that. The engine would lose 11.7% to frictional losses instead of 13% with these belts but that doesn't translate to engine efficiency or even fe gains of that percentage...
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Old 12-14-2010, 10:42 PM   #7 (permalink)
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Frank -

Thanks for the correction. I'm just shaving percentages of percentages whenever I get the chance.

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