Home » Public Forums » GMCnet » Alternator belt
| Alternator belt [message #245326] |
Thu, 27 March 2014 11:21  |
C Boyd
Messages: 2629
Registered: April 2006
Karma: 18
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Senior Member |
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Anybody have a source or part # for the 11mm alt belt?
C. Boyd
76 Crestmont
East Tennessee
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| Re: [GMCnet] Alternator belt [message #245363 is a reply to message #245348] |
Thu, 27 March 2014 16:11  |
scott cowden
Messages: 170
Registered: February 2004
Karma: 0
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Senior Member |
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HI guys and gals;
I've worked away on this issue and read many, many posts regarding alternator belts over the past 12 years since first buying my own coach.
I came up with what may be a unique and economical solution.
I've found that if my batteries aren't charges right up when I start the coach, the standard alternator belt is not happy when the alternator takes on the big load of charging all batteries at once. It seemed that no matter how tight I got the belt a few weeks later big squealing occurred after start up.
I did observe that if I had been plugged in and had also been charging the coach battery, no squealing occurred.
I do a lot of dry camping so big load at start up was nearly a given and I was nearly eating an alt. belt every year.
So I put my middle-aged noodle to the problem:
I used to own a shop and one of our business was lawn tractor and commercial grass cutting equipment. [paid the bills between snowmobile seasons!]
We learned that regular 'fan,' belts for automotive use are designed to handle between 5-8 hp draw on average. [the numbers might be a bit off...it's been a few years now]. We learned this from a couple of our suppliers who also carried 'implement,' belts. Many implement belts will take as much as 20 hp for a belt of similar dimension to the automotive belt.
So, in 2004, I put an 'implement,' belt on my alternator- 1/2 inch by 57 inch, as I recall. That belt lasted until 2011, when it too started to make some noise.
At the time, I didn't have access to an equipment dealer and installed an automotive belt. That belt lasted less than a season.
So last year, I found a local farm tractor dealer and got another implement belt. I had to get one an inch longer than the GMCMI spec book said as the implement belt is 1/2 inch and not 15/32 but it fits great AND IT NEVER SQUEALS.
When you see these belts, they're physically different from auto belts. they have fabric visible, wrapped around the belt on all sides. Both the belts I've put on my coach were green in colour. [yes, there's a 'U', in colour! at least up here there is]
so as evidence of the value of this idea, the history of alternator belts on my coach:
2002-new automotive alternator belt[when I bought the coach-old one was rotten];
2003-new automotive alternator belt [old one was squealing all the time/stretched];
2004-new Implement belt of similar dimension;
2011-new automotive alternator belt;[ implement belt lasted 7 years]
2013-new implement belt. [auto belt was squealing for several minutes after startup/stretched];
Just my results, yours, of course may vary.
Scott
'74 x-Glacier
Newmarket ON
> To: gmclist@temp.gmcnet.org
> From: dao@oarsllc.com
> Date: Thu, 27 Mar 2014 14:12:14 -0500
> Subject: Re: [GMCnet] Alternator belt
>
>
>
> Here's where I got mine:
>
> http://www.amazon.com/gp/product/B000C36AFY/ref=oh_details_o03_s00_i00?ie=UTF8&psc=1
>
> Also go the Power Steering:
>
> http://www.amazon.com/gp/product/B000C34JHU/ref=oh_details_o03_s00_i01?ie=UTF8&psc=1
>
> and the AC:
>
> http://www.amazon.com/gp/product/B000C36AFO/ref=oh_details_o03_s01_i00?ie=UTF8&psc=1
>
> --
> 1976 Royale "Twinkie II", 1978 Palm Beach with front end fire. Lynnwood WA - "We may not be able to stop all evil in the world, but I know that how we treat one another is entirely up to us."
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] Alternator belt [message #245368 is a reply to message #245363] |
Thu, 27 March 2014 16:33 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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Any pictures if the rit?
Erf
On Thursday, March 27, 2014, scott cowden <scottyforsail@hotmail.com> wrote:
> HI guys and gals;
>
> I've worked away on this issue and read many, many posts regarding
> alternator belts over the past 12 years since first buying my own coach.
>
> I came up with what may be a unique and economical solution.
>
> I've found that if my batteries aren't charges right up when I start the
> coach, the standard alternator belt is not happy when the alternator takes
> on the big load of charging all batteries at once. It seemed that no
> matter how tight I got the belt a few weeks later big squealing occurred
> after start up.
>
> I did observe that if I had been plugged in and had also been charging the
> coach battery, no squealing occurred.
>
> I do a lot of dry camping so big load at start up was nearly a given and I
> was nearly eating an alt. belt every year.
>
> So I put my middle-aged noodle to the problem:
>
> I used to own a shop and one of our business was lawn tractor and
> commercial grass cutting equipment. [paid the bills between snowmobile
> seasons!]
>
> We learned that regular 'fan,' belts for automotive use are designed to
> handle between 5-8 hp draw on average. [the numbers might be a bit
> off...it's been a few years now]. We learned this from a couple of our
> suppliers who also carried 'implement,' belts. Many implement belts will
> take as much as 20 hp for a belt of similar dimension to the automotive
> belt.
>
> So, in 2004, I put an 'implement,' belt on my alternator- 1/2 inch by 57
> inch, as I recall. That belt lasted until 2011, when it too started to
> make some noise.
>
> At the time, I didn't have access to an equipment dealer and installed an
> automotive belt. That belt lasted less than a season.
>
> So last year, I found a local farm tractor dealer and got another
> implement belt. I had to get one an inch longer than the GMCMI spec book
> said as the implement belt is 1/2 inch and not 15/32 but it fits great AND
> IT NEVER SQUEALS.
>
> When you see these belts, they're physically different from auto belts.
> they have fabric visible, wrapped around the belt on all sides. Both the
> belts I've put on my coach were green in colour. [yes, there's a 'U', in
> colour! at least up here there is]
>
> so as evidence of the value of this idea, the history of alternator belts
> on my coach:
>
> 2002-new automotive alternator belt[when I bought the coach-old one was
> rotten];
> 2003-new automotive alternator belt [old one was squealing all the
> time/stretched];
> 2004-new Implement belt of similar dimension;
> 2011-new automotive alternator belt;[ implement belt lasted 7 years]
> 2013-new implement belt. [auto belt was squealing for several minutes
> after startup/stretched];
>
> Just my results, yours, of course may vary.
>
> Scott
> '74 x-Glacier
> Newmarket ON
>
>
>
> > To: gmclist@temp.gmcnet.org <javascript:;>
> > From: dao@oarsllc.com <javascript:;>
> > Date: Thu, 27 Mar 2014 14:12:14 -0500
> > Subject: Re: [GMCnet] Alternator belt
> >
> >
> >
> > Here's where I got mine:
> >
> >
> http://www.amazon.com/gp/product/B000C36AFY/ref=oh_details_o03_s00_i00?ie=UTF8&psc=1
> >
> > Also go the Power Steering:
> >
> >
> http://www.amazon.com/gp/product/B000C34JHU/ref=oh_details_o03_s00_i01?ie=UTF8&psc=1
> >
> > and the AC:
> >
> >
> http://www.amazon.com/gp/product/B000C36AFO/ref=oh_details_o03_s01_i00?ie=UTF8&psc=1
> >
> > --
> > 1976 Royale "Twinkie II", 1978 Palm Beach with front end fire. Lynnwood
> WA - "We may not be able to stop all evil in the world, but I know that how
> we treat one another is entirely up to us."
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Gene Fisher -- 74-23,77PB/ore/ca
"Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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| Re: [GMCnet] Alternator belt [message #245399 is a reply to message #245326] |
Thu, 27 March 2014 19:25 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Chuck,
KenH provided a link to V-Belt Supply on March 30, 2013 that he got from his son Alan.
I ordered a set from them and promised to check them out. I did but forgot to post the results.
I don't remember what they measured but when I wrapped them around a spare crankshaft pulley they rode high with a bit above the
pulley. JohnS looked at them and noted they were good!
Below is a link to a list of the 15/32 inch wide belts which is sorted by part number which is the width and length.
http://www.vbeltsupply.com/ecommerce/automotive-cogged-v-belts?dir=asc&limit=100&order=name
The first belt listed is 15215 that number breaks down to:
15 = 15/32 wide
215 = 21.5 inches long
As you can see the prices are dirt cheap!
Caveats; the belts I got were made in India and they have NOT been installed so I have NO idea if they're any good.
Perhaps KenH can ask his son, Alan, how they're doing on his GMC.
Regards,
Rob M.
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
-----Original Message-----
From: Charles Boyd
Anybody have a source or part # for the 11mm alt belt?
--
C. Boyd
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] Alternator belt [message #245420 is a reply to message #245399] |
Thu, 27 March 2014 20:45 |
C Boyd
Messages: 2629
Registered: April 2006
Karma: 18
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Senior Member |
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I also ran across that today, ordered the 15570. Thanks
| USAussie wrote on Thu, 27 March 2014 20:25 |
Chuck,
KenH provided a link to V-Belt Supply on March 30, 2013 that he got from his son Alan.
I ordered a set from them and promised to check them out. I did but forgot to post the results.
I don't remember what they measured but when I wrapped them around a spare crankshaft pulley they rode high with a bit above the
pulley. JohnS looked at them and noted they were good!
Below is a link to a list of the 15/32 inch wide belts which is sorted by part number which is the width and length.
http://www.vbeltsupply.com/ecommerce/automotive-cogged-v-belts?dir=asc&limit=100&order=name
The first belt listed is 15215 that number breaks down to:
15 = 15/32 wide
215 = 21.5 inches long
As you can see the prices are dirt cheap!
Caveats; the belts I got were made in India and they have NOT been installed so I have NO idea if they're any good.
Perhaps KenH can ask his son, Alan, how they're doing on his GMC.
Regards,
Rob M.
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
-----Original Message-----
From: Charles Boyd
Anybody have a source or part # for the 11mm alt belt?
--
C. Boyd
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C. Boyd
76 Crestmont
East Tennessee
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| Re: [GMCnet] Alternator belt [message #245441 is a reply to message #245399] |
Thu, 27 March 2014 22:20 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Alan has had good, but very limited, experience with those belts. He's
used the coach very little since getting them. He'll be driving it about
700 miles next week to Sun'n'Fun & back. I'll try to remember to update
after that experience.
I will say, though, that I expect excellent results. I bought belts for my
ZTR mower from them about 4 years ago; they're still good where the
previous ones, including OEM, lasted 1 years each. Kevlar wrapped, mine
were.
Ken H.
On Thu, Mar 27, 2014 at 7:27 PM, Robert Mueller wrote:
> Chuck,
>
> KenH provided a link to V-Belt Supply on March 30, 2013 that he got from
> his son Alan.
>
> I ordered a set from them and promised to check them out. I did but forgot
> to post the results.
>
> I don't remember what they measured but when I wrapped them around a
> spare crankshaft pulley they rode high with a bit above the
> pulley. JohnS looked at them and noted they were good!
>
> Below is a link to a list of the 15/32 inch wide belts which is sorted by
> part number which is the width and length.
>
>
> http://www.vbeltsupply.com/ecommerce/automotive-cogged-v-belts?dir=asc&limit=100&order=name
>
> The first belt listed is 15215 that number breaks down to:
>
> 15 = 15/32 wide
> 215 = 21.5 inches long
>
> As you can see the prices are dirt cheap!
>
> Caveats; the belts I got were made in India and they have NOT been
> installed so I have NO idea if they're any good.
>
> Perhaps KenH can ask his son, Alan, how they're doing on his GMC.
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Alternator belt [message #245496 is a reply to message #245479] |
Fri, 28 March 2014 09:21 |
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Thanks, Scott.
I'll take a look
Billy
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of scott cowden
Sent: Friday, March 28, 2014 8:08 AM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Alternator belt
billy;
Here's a link to Gates belts which is, I believe, the belt I used. The
dimensions I used were 1/2 inch by 58 inches-1 inch longer than stock as I
couldn't get the marginally wider belt over the pulleys as stock length.
http://ww2.gates.com/europe/brochure.cfm?brochure=2967&location_id=3574
Scott
> From: robmueller@iinet.net.au
> To: gmclist@temp.gmcnet.org
> Date: Fri, 28 Mar 2014 14:32:15 +1100
> Subject: Re: [GMCnet] Alternator belt
>
> Chuck,
>
> I searched for 15574 like the one on Amazon and it kept coming back with
no listing!
>
> I'll bet that I ordered the 15570 like you did, I doubt 0.4 of an inch
> in length is going to make a difference. Do let us know when you get it.
>
> Regards,
> Rob M.
> Sydney, Australia
> AUS '75 Avion - The Blue Streak TZE365V100428 USA '75 Avion - Double
> Trouble TZE365V100426
>
>
> -----Original Message-----
> From: Charles Boyd
>
> I also ran across that today, ordered the 15570. Thanks
>
> C. Boyd
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
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bdub
bdub.net
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