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Measuring drive belt deflection

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Old Jun 23, 2018 | 10:04 AM
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Originally Posted by Stopit
Which is all good as long as the correct amount of tension is applied when measured.
Well my belt is pretty tight, not bar tight 😳 and moves up the scale 3/4 of the way. . A perfect measure no. But a pretty good guide line if you don’t have anything else to go by.

Wiz
 
Last edited by Wizardofaus; Jun 23, 2018 at 10:42 AM.
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Old Jun 23, 2018 | 10:09 AM
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After you pull the rear wheel a dozen or so times it just becomes second nature... i also use the dirtbike method where you put the swingarm at the point where the belt would have the most tension, if its not stupid tight you generally are ok.
 
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Old Jun 23, 2018 | 10:52 AM
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Ok..enough..P51, that will work for a Mustang but if you have a F35, get a gage....I use to fly a P51 55 years or so ago..of course, it had a 049 motor on it...
 
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Old Jun 23, 2018 | 11:11 AM
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buy the tool and make sure you adjust when cold. also Jims makes a nice little tool that goes on the end of the axle and allows you to dial the tension right in.
 
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Old Jun 23, 2018 | 11:30 AM
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"Too tight" belts will eat the crappy wheel bearings installed today...

Sad, but true.
 
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Old Jun 23, 2018 | 01:25 PM
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I use the twist method. About 1/2 way between flat and turned 90 is my preferred. I used to use a gauge, but misplaced it years ago. When I had both, the 45 angle was just about Harley’s spec.
 
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Old Jun 23, 2018 | 01:42 PM
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Originally Posted by RIPSAW
Ok..enough..P51, that will work for a Mustang but if you have a F35, get a gage....I use to fly a P51 55 years or so ago..of course, it had a 049 motor on it...
Had a *** PT-19 trainer I used to fly on a string. Oh the days of pissing with glow plugs, and getting that fuel in ya eyes 😩

Wizzing Along ✈️
 
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Old Jun 23, 2018 | 02:28 PM
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Originally Posted by Wizardofaus


Had a *** PT-19 trainer I used to fly on a string. Oh the days of pissing with glow plugs, and getting that fuel in ya eyes 😩

Wizzing Along ✈️
Sure this is an antique....but that fuel smelt so good.
 
Last edited by Jackie Paper; Jun 23, 2018 at 02:31 PM.
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Old Jun 23, 2018 | 04:39 PM
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yep had a pt-19 trainer also, virtually crash proof with rubber-band attachment. get pretty dizzy with a short control.

geeez, i should have patented it, i used to cut grass with the.049 when i got bored.

belt scale on guard, nothing wrong with it, never paid attention to the belt, probably tighter than most, not material, do not want to skip a tooth, all over but the 150 bill!!
ooops!?! i feel another oil debate coming on, truth told, fly it and watch it.
 
Last edited by bustert; Jun 23, 2018 at 04:43 PM.
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Old Jun 25, 2018 | 12:55 PM
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one more thing, take the time and get it correctly within specs. if you do you will get many trouble free miles out of the belt drive system.
 
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