Posted by Ulysses on June 4, 2009, 2:21 pm
> On Wed, 3 Jun 2009 09:23:40 -0700, "Ulysses"
> >The belt rides higher on my alternator pulley than it does on my
> >engine/drive pulley. The engine pulley I bought specifically for this
> >project (not the first pulley either) is for an A belt and that's what
I've
> >been using, pretty much as short as is reasonable. It sounds like the
> >alternator pulley may be my main problem.
> I use a standard alternator pulley with a $0 notched automotive belt
> for about 2kW. I expect that's about the limit considering the small
> diameter of the driven pulley. It lives in a hot environment, and
> tends to get glazed and cracked, so I replace it every couple years.
> Perhaps 100hrs. A little misalignment and it would be half of that.
> Wayne
Now that you mention it the belt that held up the longest for me was a
notched automotive belt. The most I run it is at about 2.8kW but I put on a
hundred hours in a couple of months or less. I figured mine was getting
glazed due to slippage but there seems to be a llimit on how tight it can
be. I've been running it a little too tight probably--I can move the belt
by hand about 3/8."
Posted by wmbjkREMOVE on June 4, 2009, 2:51 pm
On Thu, 4 Jun 2009 07:21:20 -0700, "Ulysses"
>Now that you mention it the belt that held up the longest for me was a
>notched automotive belt. The most I run it is at about 2.8kW but I put on a
>hundred hours in a couple of months or less. I figured mine was getting
>glazed due to slippage but there seems to be a llimit on how tight it can
>be. I've been running it a little too tight probably--I can move the belt
>by hand about 3/8."
If you're going to redo it, you could use B size. Good selection of
affordable belts and pulleys here
http://www.surpluscenter.com/powerTrans.asp?UID 09060409443681&catname=powerTrans.
Wayne
Posted by Ulysses on June 5, 2009, 3:58 pm
> On Thu, 4 Jun 2009 07:21:20 -0700, "Ulysses"
> >Now that you mention it the belt that held up the longest for me was a
> >notched automotive belt. The most I run it is at about 2.8kW but I put
on a
> >hundred hours in a couple of months or less. I figured mine was getting
> >glazed due to slippage but there seems to be a llimit on how tight it can
> >be. I've been running it a little too tight probably--I can move the
belt
> >by hand about 3/8."
> If you're going to redo it, you could use B size. Good selection of
> affordable belts and pulleys here
http://www.surpluscenter.com/powerTrans.asp?UID 09060409443681&catname=powerTrans.
> Wayne
I wish I would have found that place when I was looking for pulleys. Pretty
darn cheap!
Posted by Ulysses on June 6, 2009, 3:11 pm
> On Thu, 4 Jun 2009 07:21:20 -0700, "Ulysses"
> >Now that you mention it the belt that held up the longest for me was a
> >notched automotive belt. The most I run it is at about 2.8kW but I put
on a
> >hundred hours in a couple of months or less. I figured mine was getting
> >glazed due to slippage but there seems to be a llimit on how tight it can
> >be. I've been running it a little too tight probably--I can move the
belt
> >by hand about 3/8."
> If you're going to redo it, you could use B size. Good selection of
> affordable belts and pulleys here
http://www.surpluscenter.com/powerTrans.asp?UID 09060409443681&catname=powerTrans.
> Wayne
I'm amazed at the prices on that site. I spent a long time searching for
pulleys and never found it. I really like the idea of going with the B
size. For the moment, working with what I have on hand, I'm trying a longer
belt and trying to fashion some sort of tensioner/idler pulley so it will
maintain the same amount of tension at all times (hopefully). The little
bit that I've read about belt-drive alternators said to use a short belt.
Posted by Ken Maltby on June 6, 2009, 4:44 pm
>> On Thu, 4 Jun 2009 07:21:20 -0700, "Ulysses"
>>
>>
>> >Now that you mention it the belt that held up the longest for me was a
>> >notched automotive belt. The most I run it is at about 2.8kW but I put
> on a
>> >hundred hours in a couple of months or less. I figured mine was getting
>> >glazed due to slippage but there seems to be a llimit on how tight it
>> >can
>> >be. I've been running it a little too tight probably--I can move the
> belt
>> >by hand about 3/8."
>>
>> If you're going to redo it, you could use B size. Good selection of
>> affordable belts and pulleys here
>>
>
http://www.surpluscenter.com/powerTrans.asp?UID 09060409443681&catname=powerTrans.
>>
>> Wayne
> I'm amazed at the prices on that site. I spent a long time searching for
> pulleys and never found it. I really like the idea of going with the B
> size. For the moment, working with what I have on hand, I'm trying a
> longer
> belt and trying to fashion some sort of tensioner/idler pulley so it will
> maintain the same amount of tension at all times (hopefully). The little
> bit that I've read about belt-drive alternators said to use a short belt.
I've delt with them for many years now, and consider them
as a tinkerer's toy shop. You will probably enjoy getting their
catalog.
I find this works out to be a more practical approach for
direct coupling:
http://www.surpluscenter.com/sort.asp?UID 09060611321224&catname=powerTrans&keyword=PSF3
Luck;
Ken
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> >The belt rides higher on my alternator pulley than it does on my
> >engine/drive pulley. The engine pulley I bought specifically for this
> >project (not the first pulley either) is for an A belt and that's what
I've
> >been using, pretty much as short as is reasonable. It sounds like the
> >alternator pulley may be my main problem.
> I use a standard alternator pulley with a $0 notched automotive belt
> for about 2kW. I expect that's about the limit considering the small
> diameter of the driven pulley. It lives in a hot environment, and
> tends to get glazed and cracked, so I replace it every couple years.
> Perhaps 100hrs. A little misalignment and it would be half of that.
> Wayne