Hi all,

I'm working on a project that needs lightweight 3" OD, 3/8" ID pulleys
suitable for round rope or cord that's about 1/4 inch in diameter.

I've obtained a few Grainger 5MVF4 (
http://www.grainger.com/Grainger/AMERICAN-GARAGE-DOOR-Cable-Pulley-5MVF4?Pid=search
and they are exactly the right dimensions but I'd rather have the same
pulley in a nylon or plastic to reduce the weight.

I tried Googling for sources and found a couple that seemed close but
nothing exactly right - and the Chinese manufacturer's webpages are
utterly devoid of dimensions and somewhat indecipherable.

I'm looking for about 30-100 pieces for a prototype run - maybe more if
the gods smile on us.

Anyone have a source for plastic pulleys?

Thanks in advance

Carla

"What counts is not necessarily the size of the dog in the fight ~ it's
the size of the fight in the dog." Dwight D. Eisenhower

On Fri, 21 Jun 2013 00:49:34 -0700, Carla Fong
wrote:

Hi all,

I'm working on a project that needs lightweight 3" OD, 3/8" ID pulleys
suitable for round rope or cord that's about 1/4 inch in diameter.

I've obtained a few Grainger 5MVF4 (
http://www.grainger.com/Grainger/AMERICAN-GARAGE-DOOR-Cable-Pulley-5MVF4?Pid=search
and they are exactly the right dimensions but I'd rather have the same
pulley in a nylon or plastic to reduce the weight.

I tried Googling for sources and found a couple that seemed close but
nothing exactly right - and the Chinese manufacturer's webpages are
utterly devoid of dimensions and somewhat indecipherable.

I'm looking for about 30-100 pieces for a prototype run - maybe more if
the gods smile on us.

Anyone have a source for plastic pulleys?

Thanks in advance

Carla

"What counts is not necessarily the size of the dog in the fight ~ it's
the size of the fight in the dog." Dwight D. Eisenhower


http://www.fennerdrives.com/FetchFil...6-51b18577c9ce

Don't overlook the bore adapters on p.11.

--
Ned Simmons

McMaster Carr (www.mcmaster.com) has them, but they absolutely don't do
volume discounts. Maybe buy one and try to figure out who actually made it
and contact them?

-----
Regards,
Carl Ijames
"Carla Fong" wrote in message
...

Hi all,

I'm working on a project that needs lightweight 3" OD, 3/8" ID pulleys
suitable for round rope or cord that's about 1/4 inch in diameter.

I've obtained a few Grainger 5MVF4 (
http://www.grainger.com/Grainger/AMERICAN-GARAGE-DOOR-Cable-Pulley-5MVF4?Pid=search
and they are exactly the right dimensions but I'd rather have the same
pulley in a nylon or plastic to reduce the weight.

I tried Googling for sources and found a couple that seemed close but
nothing exactly right - and the Chinese manufacturer's webpages are
utterly devoid of dimensions and somewhat indecipherable.

I'm looking for about 30-100 pieces for a prototype run - maybe more if
the gods smile on us.

Anyone have a source for plastic pulleys?

Thanks in advance

Carla

"What counts is not necessarily the size of the dog in the fight ~ it's
the size of the fight in the dog." Dwight D. Eisenhower

On Fri, 21 Jun 2013 00:49:34 -0700, Carla Fong
wrote:

Hi all,

I'm working on a project that needs lightweight 3" OD, 3/8" ID pulleys
suitable for round rope or cord that's about 1/4 inch in diameter.

I've obtained a few Grainger 5MVF4 (
http://www.grainger.com/Grainger/AMERICAN-GARAGE-DOOR-Cable-Pulley-5MVF4?Pid=search
and they are exactly the right dimensions but I'd rather have the same
pulley in a nylon or plastic to reduce the weight.

I tried Googling for sources and found a couple that seemed close but
nothing exactly right - and the Chinese manufacturer's webpages are
utterly devoid of dimensions and somewhat indecipherable.

I'm looking for about 30-100 pieces for a prototype run - maybe more if
the gods smile on us.

Anyone have a source for plastic pulleys?

Thanks in advance

Carla

"What counts is not necessarily the size of the dog in the fight ~ it's
the size of the fight in the dog." Dwight D. Eisenhower

Do a Google for Sailboat sheaves or pullys.

There are any number of expensive and inexpensive units out there.

When I was racing the Thistle...I replaced all my hardware over a
years time from a company in IRRC..Ohio for very very little money

Cant remember the name..Ill dig through my records. But a 3" pully
with a 5/16 groove was something like $8

Stainless steel of course with good delrin guts

And of course..check Ebay.

Small sailboats..."one design" boats use rigging that is very
affordable.


Gunner


--
""Almost all liberal behavioral tropes track the impotent rage of small
children. Thus, for example, there is also the popular tactic of
repeating some stupid, meaningless phrase a billion times" Arms for
hostages, arms for hostages, arms for hostages, it's just about sex, just
about sex, just about sex, dumb,dumb, money in politics,money in
politics, Enron, Enron, Enron. Nothing repeated with mind-numbing
frequency in all major news outlets will not be believed by some members
of the populace. It is the permanence of evil; you can't stop it." (Ann
Coulter)