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  #11  
Old 01-20-2020, 10:07 AM
fixnflyguy fixnflyguy is offline
 
Join Date: Jan 2006
Location: Winston-Salem, N.C.
Posts: 1,082
Default My belt

I am running an ACDelco 15360 88934801 belt on mine.
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  #12  
Old 01-20-2020, 11:45 AM
Ralph Inkster Ralph Inkster is offline
 
Join Date: Feb 2008
Location: Calgary, Alberta
Posts: 644
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Limiting factor for changing the belt size is how easy it is to slip over the two pulleys while installing. Solution to get a slightly too short belt on might be to position belt on both pulleys before sliding the flywheel into position on the crank studs. Another trick is go with the next narrower belt width and shorter belt length.
So progressively shorter belts in sequence might be 17365 - 17360 - 15355 (sits deeper in pulley so slightly more distance between pulleys) - 17355 - 15350 and so on. Note, check that the narrower belt does not bottom out in the pulleys. Alternator installations are not all the same- bracket geometry, alternator to case clearance, alternator housing diameter, bracket shape, so there isn't a 'common' belt size for all.

If engine sag is the causal factor of the problem, solution might be new engine mounts, or adding a shimming washer to the bottom mounts, tilting the front of the engine up. Or.. form a clearance blister in the cowling, making the blister is much easier than dealing with the paint color match after...
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Ralph
Time to slow down the Builder Assist operation & concentrate on finishing my own stuff & fly the 6A.
My 'retirement' activities list;
Mon - 6 build project to finish
Tues - 6 upgrade project, canopy, panel, interior & fairings
Wed - 9A salvage rebuild, wing, firewall, gear, engine
Thurs - 7 salvage rebuild (was second plane I built, the Turbo Subie) for a buddy
Rest of week - belongs to the wife!

Last edited by Ralph Inkster : 01-20-2020 at 11:51 AM.
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  #13  
Old 01-20-2020, 11:51 AM
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emsvitil emsvitil is offline
 
Join Date: Oct 2019
Location: SoCal
Posts: 120
Default

Something stupid (maybe, maybe not)

Remove the bolt in the tensioner slot before putting on a smaller belt.

That way, the slot isn't the limitation on how close you can get the pulleys.
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  #14  
Old 01-20-2020, 12:21 PM
Ralph Inkster Ralph Inkster is offline
 
Join Date: Feb 2008
Location: Calgary, Alberta
Posts: 644
Default

Yes for some. Some bracket installations literally allow the alt housing touch the case within the slot travel.
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Ralph
Time to slow down the Builder Assist operation & concentrate on finishing my own stuff & fly the 6A.
My 'retirement' activities list;
Mon - 6 build project to finish
Tues - 6 upgrade project, canopy, panel, interior & fairings
Wed - 9A salvage rebuild, wing, firewall, gear, engine
Thurs - 7 salvage rebuild (was second plane I built, the Turbo Subie) for a buddy
Rest of week - belongs to the wife!
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  #15  
Old 01-23-2020, 06:23 AM
WingsOnWheels WingsOnWheels is offline
 
Join Date: Mar 2009
Location: Plano, TX
Posts: 1,857
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I have an automotive alternator and use a belt short enough that I have to remove the bolt from the alternator to get it on. Leave me with a ton of clearance, a good 1-2 inches. I also have the small 7" crank pulley, so that helps since I can use the smaller alternator pulley without overspeed.
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Complete 5/10/19
PP SEL / A&P
I donate every year on my B-Day (in Dec), but donated early in Sep'19.
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