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10mm vs 11mm belts [message #254904] Wed, 09 July 2014 20:27 Go to next message
carguy is currently offline  carguy   United States
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I know that we are supposed to use 11mm belts but I've forgotten what happens if one uses 10mm belts. Is it just shorter life or something more serious?

Bill Brown - '77 Buckeye Cruiser
Coshocton OH
carguybill@sbcglobal.net

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Re: 10mm vs 11mm belts [message #254908 is a reply to message #254904] Wed, 09 July 2014 20:37 Go to previous messageGo to next message
Bob de Kruyff   United States
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carguy wrote on Wed, 09 July 2014 19:27
I know that we are supposed to use 11mm belts but I've forgotten what happens if one uses 10mm belts. Is it just shorter life or something more serious?

They will sit too low in the groove and run on the bottom of the belt rather than the "taper" of the belt resulting in very little ability to transfer torque and result in slippage and rapid wear.

Bob de Kruyff
78 Eleganza
Chandler, AZ

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Re: [GMCnet] 10mm vs 11mm belts [message #254909 is a reply to message #254904] Wed, 09 July 2014 20:36 Go to previous messageGo to next message
sgltrac is currently offline  sgltrac   United States
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I think squeak and poor performance Bill.

Todd Sullivan

Sully
77 royale
Seattle

> On Jul 9, 2014, at 6:27 PM, Bill Brown wrote:
>
> I know that we are supposed to use 11mm belts but I've forgotten what happens if one uses 10mm belts. Is it just shorter life or something more
> serious?
> --
> Bill Brown - '77 Buckeye Cruiser
> Coshocton OH
> carguybill@sbcglobal.net
> _______________________________________________
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Sully 77 Royale basket case. Future motorhome land speed record holder(bucket list) Seattle, Wa.

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Re: 10mm vs 11mm belts [message #254910 is a reply to message #254908] Wed, 09 July 2014 20:41 Go to previous messageGo to next message
lotsofspareparts is currently offline  lotsofspareparts   United States
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Bob de Kruyff wrote on Wed, 09 July 2014 18:37
carguy wrote on Wed, 09 July 2014 19:27
I know that we are supposed to use 11mm belts but I've forgotten what happens if one uses 10mm belts. Is it just shorter life or something more serious?

They will sit too low in the groove and run on the bottom of the belt rather than the "taper" of the belt resulting in very little ability to transfer torque and result in slippage and rapid wear.



+1

Back when I was a lube technician many years ago we had the occasional customer that would ask about a squeeling belt, it could always be traced back to a worn v-belt that was running on the bottom of the pulley.

Using the wrong width belt does the same thing.

Jared

Jared & Tina Lazaron + 14yr old Daughter..... 77 Eleganza II "Recherché"..... 73 Canyon Lands 230 "Elephant"

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Re: [GMCnet] 10mm vs 11mm belts [message #254918 is a reply to message #254909] Wed, 09 July 2014 22:14 Go to previous messageGo to next message
Ken Burton is currently offline  Ken Burton   United States
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A few years back a guy stopped by on a trip from Texas to Philadelphia. He had flipped and destroyed 3 belts from Texas to NW Indiana. I took him to Autozone. We got and installed 11 mm belts. He had no belt problems after that.

Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

[Updated on: Thu, 10 July 2014 06:11]

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Re: [GMCnet] 10mm vs 11mm belts [message #254926 is a reply to message #254918] Wed, 09 July 2014 23:16 Go to previous messageGo to next message
hal kading is currently offline  hal kading   United States
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In addition to wear on the belt, the pulleys will wear too.

Hal Kading 78 Buskirk Las Cruces NM

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Re: [GMCnet] 10mm vs 11mm belts [message #254932 is a reply to message #254926] Thu, 10 July 2014 01:44 Go to previous messageGo to next message
jim kanomata is currently offline  jim kanomata   United States
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At our shop, we hve seldem run into the belt problem as long as we tighten it properly.
Keep in mind that the new belts stretch and will loosen, then you blame the belt.
The belt reps from Gates and Goodyear telling us the same and you might as well get use to it like the Ethanol in the fuel.

Jim Kanomata Applied/GMC, Fremont,CA jimk@appliedairfilters.com http://www.appliedgmc.com 1-800-752-7502

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Re: [GMCnet] 10mm vs 11mm belts [message #254992 is a reply to message #254932] Thu, 10 July 2014 17:42 Go to previous messageGo to next message
lotsofspareparts is currently offline  lotsofspareparts   United States
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I read a conversion somewhere so that we could use industrial/implement belts.

Can't remember where though.

Jared

Jared & Tina Lazaron + 14yr old Daughter..... 77 Eleganza II "Recherché"..... 73 Canyon Lands 230 "Elephant"

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Re: [GMCnet] 10mm vs 11mm belts [message #255002 is a reply to message #254992] Thu, 10 July 2014 18:32 Go to previous messageGo to next message
emerystora is currently offline  emerystora   United States
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Look between pages 11 and 12 of the GMCMI Spring 2014 Parts Interchange that was sent out to members in April of this year.

Emery Stora

On Jul 10, 2014, at 4:42 PM, Jared wrote:

> I read a conversion somewhere so that we could use industrial/implement belts.
>
> Can't remember where though.
>
> Jared
> --

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Re: [GMCnet] 10mm vs 11mm belts [message #255006 is a reply to message #254926] Thu, 10 July 2014 19:08 Go to previous message
Bob de Kruyff   United States
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hal kading wrote on Wed, 09 July 2014 22:16
In addition to wear on the belt, the pulleys will wear too.

Hal Kading 78 Buskirk Las Cruces NM

Absolutely ! Many people overlook that and wind up with several attempts at new belts and even dual pullies to correct for a worn pully in the first place.

Bob de Kruyff
78 Eleganza
Chandler, AZ

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