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Interesting site about modern pulley technology.
Posted by: DaveO90s4 ()
Date: May 26, 2018 06:58AM

Interesting site about modern pulley technology.

I wonder about the applicability of this type of technology for our engines - noting that it would need to for 3V spec. belts.

Or is it simply overkill for us?

[www.litensaftermarket.com]

Cheers

DaveO

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Re: Interesting site about modern pulley technology.
Posted by: MattNall ()
Date: May 26, 2018 07:09AM

Years ago I worked with a Company that made overriding clutches for Air Starters...


It was determined that it's needed on the FAN!

This design might work there! Love the compact design!





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Re: Interesting site about modern pulley technology.
Posted by: jjohnsonjo ()
Date: May 26, 2018 09:15AM

We used a lot of different sizes of these things on computer peripheral devices. I made a pair of snubbing winches for my sail boat with some scrap ones.

J.O.

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Re: Interesting site about modern pulley technology.
Posted by: vairmech ()
Date: May 26, 2018 09:15AM

Actually I did experiment with that years ago! I installed an overrunning clutch on the fan. I also had to raise the carbs by about a half inch and turn the pulley upside down. I don't know if I still have any pictures but I do have the print from the company.

The conclusion was there was some benefit for steel fans but not the Magnesium fan. It would work excellent on the generator or the alternator but space requirements will not let you do anything.

Ken Hand
Handy Car Care
248 613 8586

Vairmech@aol.com

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Re: Interesting site about modern pulley technology.
Posted by: Brizo ()
Date: May 26, 2018 09:32AM

Corvettes had a water pump flywheel for a couple years to minimize belt flutter when the A/C was on and then GM went to a de-coupler alternator pulley which worked better. But they are all for serpentine belts and even if someone made the serpentine balancer and pulleys for the Corvair engine, as Ken says, there's just no room.

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



Edited 1 time(s). Last edit at 05/26/2018 11:16AM by MattNall.

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Re: Interesting site about modern pulley technology.
Posted by: DaveO90s4 ()
Date: May 26, 2018 02:18PM

Hi gents,

I don't even know if it is practicable to put a 3V spec pulley on one of these devices, but if it were possible then wouldn't an adaptor on the generator / alternator and / or mounting bracket to set that unit back - to allow for the extended length of the device itself - allow it to be fitted on the alternator and the belt still run 'true'?. At least theoretically?

Which would then allow increased belt tension without belt flipping, and hence reduced belt slippage.

One on the alternator, one on the fan, belts suitably tight....

(Still got to get my basics fixed first though)smiling smiley

DaveO

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Re: Interesting site about modern pulley technology.
Posted by: Allan Lacki ()
Date: May 27, 2018 07:29AM

It seems to me that a round belt, rather than a V-belt, would eliminate fan belt flipping.

[www.gatespowerpro.com]

Quote: Heavy-duty round belt designed for demanding applications. These belts are designed for 1/4 turn or twisted drives where more than an O-ring is required.

I wonder if the engineers at Chevrolet ever considered this.

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Re: Interesting site about modern pulley technology.
Posted by: American Mel ()
Date: May 27, 2018 08:45AM

Allan Lacki Wrote:
-------------------------------------------------------
> It seems to me that a round belt, rather than a
> V-belt, would eliminate fan belt flipping.
>
> [www.gatespowerpro.com]
> ect/gates?cmd=catProductDetail&productID=88190014
>
> Quote: Heavy-duty round belt designed for
> demanding applications. These belts are designed
> for 1/4 turn or twisted drives where more than an
> O-ring is required.
>
> I wonder if the engineers at Chevrolet ever
> considered this.

Some interesting!
Standard size 120"

"Additional sizes from 42 inches to 660 inches are available upon request and require minimum order quantities of 87 belts per size +/- 10%. Contact Customer Service for availability and setup."

So, who wants to order that first 87 belts to try this idea out?

.
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Re: Interesting site about modern pulley technology.
Posted by: Allan Lacki ()
Date: May 27, 2018 09:02AM

In addition to the belts, we'd need to manufacture special pulleys! hehehe.... Still, it begs the question, did the factory consider this idea? Does it make sense from an engineering perspective?

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Re: Interesting site about modern pulley technology.
Posted by: DaveO90s4 ()
Date: May 28, 2018 09:27AM

I'm not sure what there is to prevent a round belt from twisting and shortening and twisting and shortening etc etc etc would this even occur? I don't know, but worth considering.

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Re: Interesting site about modern pulley technology.
Date: May 30, 2018 11:42AM

I believe this eliminates belt throwing problems -
[www.corvairunderground.com]

Lon Wall

Fireman Oregon Coast Scenic Railroad #25 #2
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