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Re: Robson spring loaded tensioner
Posted by: matchlessmo ()
Date: January 12, 2018 05:14PM

I tossed Robinson tensioner in trash after my cap screw bolt broke and corvair underground never had replacement bolts in stock, bushings wore out after 6,000 miles on unit bought in 2006 , and all engine parts new,


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Re: Robson spring loaded tensioner
Posted by: rowin4 ()
Date: January 12, 2018 09:18PM

Once a belt flips off it needs to be replaced. A flipped belt will just keep coming off. So did you replace the belt and still have a problem? or are you trying to run the same belt?

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Re: Robson spring loaded tensioner
Posted by: American Mel ()
Date: January 12, 2018 10:36PM

rowin4 Wrote:
-------------------------------------------------------
> Once a belt flips off it needs to be replaced. A
> flipped belt will just keep coming off.
So did you
> replace the belt and still have a problem? or are
> you trying to run the same belt?


You know I have heard that before.
But I believe it is just another of those perpetual Corvair Urban Legends that people just keep repeating because it is what they were told a long time ago by someone who is held in high esteem so it must be true..
I have put some back on and had them flip off with-in a couple of miles.
I have put others on and they lasted THOUSANDS!
I do not believe that the simple act of flipping off is going to make a belt predisposed to flipping.
On those belts that continued to flip, it became apparent upon closer inspection that the belt had sustained damage when it flipped.
While there is a great propensity for damage to occur on a flipped belt, just the simple act of flipping does not guarantee that the belt is ruined.
So, why did your belt flip?
And is it damaged?
Those are the factors, not simply, "It flipped - toss it out!"

.
-----------------------------------------------
WA. state, 1 mile south of the Canadian border,
I am not at the end of the world, but you can see it from here.
'66 Monza Coupe - 4spd, 140 Daily driver beater
'67 Monza Vert. - PG, 140 Daily driver beater

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Re: Robson spring loaded tensioner
Posted by: Willt65 ()
Date: January 13, 2018 07:43AM

You mentioned that the bushings wore out after 6000 miles. Question - when you would watch your engine when idling, did the tensioner move in and out as the engine was running? Mine would go in and out and I found the problem. I also had a otto adjustable fan pulley. This pulley was not machined perfectly causing it to be eccentric. Which caused the tensioner to go in and out with every revolution of the engine. I replaced the fan pulley with a billet one and problem solved! Im sure mine would have worn out quickly as well if I would have left it alone as was.



matchlessmo Wrote:
-------------------------------------------------------

bushings wore out
> after 6,000 miles on unit bought in 2006 , and all
> engine parts new,

Will Teeter
Flintstone, MD
65 Corsa project

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Re: Robson spring loaded tensioner
Posted by: matchlessmo ()
Date: January 14, 2018 11:42AM

Will, not sure was over 10 yrs ago, Thks


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Re: Robson spring loaded tensioner
Posted by: Brizo ()
Date: January 14, 2018 01:54PM

Belts often flip off or rollover in the pulleys because some of the cords inside the belt are broken on one side. Usually from overtightening. A belt with broken cords will curve sideways when hanging down on one finger. If it curves, its junk.

Dan Brizendine,
'64 8door Greenbrier 140 PG. "In beautiful Wanamaker Indiana...with one stop light and 5 pizza shops"

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Re: Robson spring loaded tensioner
Posted by: stitch ()
Date: January 14, 2018 02:03PM

Brizo Wrote:
-------------------------------------------------------
> Belts often flip off or rollover in the pulleys
> because some of the cords inside the belt are
> broken on one side. Usually from overtightening. A
> belt with broken cords will curve sideways when
> hanging down on one finger. If it curves, its
> junk.

Good synopsis! Never thought of that Scenario. Makes sense though!
Thanx for sharing! smileys with beer

BTW, never bought a tensioner. I figure GM woulda put one in...if necessary..smoking smiley

"If you can't fix it with a Hammer, you have an Electrical problem."
Stitch...
Schertz, Texas.
(Smallish town/burg 17 mi. NE of San Antonio)

!967.. 4th body
8th off the line



Edited 1 time(s). Last edit at 01/14/2018 02:06PM by stitch.

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Re: Robson spring loaded tensioner
Posted by: American Mel ()
Date: January 15, 2018 12:14PM

Dan, that goes right along with what I said.
Thank-you!

.
-----------------------------------------------
WA. state, 1 mile south of the Canadian border,
I am not at the end of the world, but you can see it from here.
'66 Monza Coupe - 4spd, 140 Daily driver beater
'67 Monza Vert. - PG, 140 Daily driver beater

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