Today's Message Index:
----------------------
1. 12:06 AM - Re: Fuel tank sealant available (Doug Gray)
2. 07:09 AM - Re: Fuel tank sealant available (JFLEISC@aol.com)
3. 07:32 AM - Re: Fuel tank sealant available (Kelly McMullen)
4. 09:56 AM - OT: help looking for a part (Chris W)
5. 10:36 AM - Re: OT: help looking for a part (Brian Kraut)
6. 10:54 AM - Re: OT: help looking for a part (Jack Hilditch)
7. 11:33 AM - Re: OT: help looking for a part (Terry Watson)
8. 12:20 PM - Re: OT: help looking for a part (Paul Rice)
9. 01:29 PM - Re: OT: help looking for a part (linn Walters)
10. 03:49 PM - Re: OT: help looking for a part (Chris W)
Message 1
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| Subject: | Re: Fuel tank sealant available |
On Sat, 2008-06-28 at 20:40 -0400, JFLEISC@aol.com wrote:
> Which one is the 'good ol' stuff?
MIL-S-8802 Was the original specification. Manufacturers complied with
the spec or did not get the gig. My original quart cans from Vans were
marked with the Mil-STD reference.
This standard covers a number of variations, I would be surprised if the
PRC product line had variations beyond these.
I believe manufacture is limited to a small number of plants if not one
only with the real industry being repackaging the product. Hence we see
it appearing under a host of labels and package types at corresponding
markups.
Yes you are correct - it might well have been tweaked along the way
especially after the mil-stds were transferred to industry.
Doug
Message 2
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| Subject: | Re: Fuel tank sealant available |
In a message dated 6/29/2008 3:08:19 A.M. Eastern Daylight Time,
dgra1233@bigpond.net.au writes:
Yes you are correct - it might well have been tweaked along the way
especially after the mil-stds were transferred to industry.
Therein lies the issue; In my research I came across a lot of "mights,
maybes, or rumors". I am also reasonably sure that they, as you say, are all if
not pretty close to the same, but to be sure I went with the data sheets and
very few referenced alcohol. At least with the ones that do, I have it in
writing as being tested for it.
Jim
**************Gas prices getting you down? Search AOL Autos for
fuel-efficient used cars. (http://autos.aol.com/used?ncid=aolaut00050000000007)
Message 3
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| Subject: | Re: Fuel tank sealant available |
I don't know the full history of the sealant, but from a couple updates
to the Mooney manuals I can ascertain that in 1966 they were spec-ing
PR1221-B-4, mil spec 7502C, while by 1981 the spec changed to PR1422-B2,
mil spec 8802, which remains their standard today.
Doug Gray wrote:
>
> On Sat, 2008-06-28 at 20:40 -0400, JFLEISC@aol.com wrote:
>
>> Which one is the 'good ol' stuff?
>>
>
> MIL-S-8802 Was the original specification. Manufacturers complied with
> the spec or did not get the gig. My original quart cans from Vans were
> marked with the Mil-STD reference.
>
> This standard covers a number of variations, I would be surprised if the
> PRC product line had variations beyond these.
>
> I believe manufacture is limited to a small number of plants if not one
> only with the real industry being repackaging the product. Hence we see
> it appearing under a host of labels and package types at corresponding
> markups.
>
> Yes you are correct - it might well have been tweaked along the way
> especially after the mil-stds were transferred to industry.
>
> Doug
>
>
Message 4
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| Subject: | OT: help looking for a part |
Totally non aviation related but if the part I am looking for exists,
I'm sure someone here knows where to get it.
I have this mechanism (details not important) that is actuated with a
rope, probably 3/16" parachute cord. The rope will exit out of a wood
cabinet through a round hole. The problem is the pull on the rope will
be almost at 90 degrees from the axis of the hole causing it to rub on
the edge of the hole which will make the rope wear out and cause lots of
friction. What I am looking for is some kind of metal insert I can put
in the hole that will have a large inside radius to give the rope a
smooth surface to ride on. I know a pulley would be the ideal solution
but that would make the cabinet unattractive and the force on the rope
will be less than 20 lbs so I think it should work fine with just some
kind of bushing in the hole. The larger the radius the better this
should work. I'm hoping to find something made out of either Stainless
steel or Brass. I guess a plastic would be ok too but I would rather it
be metal.
What I had in mind was something with a similar cross section to the
attached drawing. I could just have a machine shop put a radius on a
brass bushing but I would rather not have to do that, and I haven't
found a bushing with a thick enough wall to get as large of a radius as
I would like, 1/4" or larger.
do not archive
--
Chris W
KE5GIX
"Protect your digital freedom and privacy, eliminate DRM,
learn more at http://www.defectivebydesign.org/what_is_drm"
Ham Radio Repeater Database.
http://hrrdb.com
Message 5
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| Subject: | OT: help looking for a part |
How about a cable fairlead from Aircraft Spruce?
http://www.aircraftspruce.com/pdf/2008Individual/Cat08139.pdf
Brian Kraut
Engineering Alternatives, Inc.
www.engalt.com
-----Original Message-----
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com]On Behalf Of Chris W
Sent: Sunday, June 29, 2008 12:53 PM
Subject: RV-List: OT: help looking for a part
Totally non aviation related but if the part I am looking for exists,
I'm sure someone here knows where to get it.
I have this mechanism (details not important) that is actuated with a
rope, probably 3/16" parachute cord. The rope will exit out of a wood
cabinet through a round hole. The problem is the pull on the rope will
be almost at 90 degrees from the axis of the hole causing it to rub on
the edge of the hole which will make the rope wear out and cause lots of
friction. What I am looking for is some kind of metal insert I can put
in the hole that will have a large inside radius to give the rope a
smooth surface to ride on. I know a pulley would be the ideal solution
but that would make the cabinet unattractive and the force on the rope
will be less than 20 lbs so I think it should work fine with just some
kind of bushing in the hole. The larger the radius the better this
should work. I'm hoping to find something made out of either Stainless
steel or Brass. I guess a plastic would be ok too but I would rather it
be metal.
What I had in mind was something with a similar cross section to the
attached drawing. I could just have a machine shop put a radius on a
brass bushing but I would rather not have to do that, and I haven't
found a bushing with a thick enough wall to get as large of a radius as
I would like, 1/4" or larger.
do not archive
--
Chris W
KE5GIX
"Protect your digital freedom and privacy, eliminate DRM,
learn more at http://www.defectivebydesign.org/what_is_drm"
Ham Radio Repeater Database.
http://hrrdb.com
Message 6
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| Subject: | OT: help looking for a part |
Chris,
Those types of blocks are common in the sailing world and are called turning
blocks. They are typically mounted inside masts, booms or other hardware. You
might try this piece for starters:
http://discountmarinesource.com/detail.aspx?ID=823
They come in many sizes and rated for small to very large loads and there are
models for standard rope, wire-rope, wire and aramids.
Good luck,
Jack Hilditch
RV-9A project underway
-----Original Message-----
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of Chris W
Sent: Sunday, June 29, 2008 12:53 PM
Subject: RV-List: OT: help looking for a part
Totally non aviation related but if the part I am looking for exists,
I'm sure someone here knows where to get it.
I have this mechanism (details not important) that is actuated with a
rope, probably 3/16" parachute cord. The rope will exit out of a wood
cabinet through a round hole. The problem is the pull on the rope will
be almost at 90 degrees from the axis of the hole causing it to rub on
the edge of the hole which will make the rope wear out and cause lots of
friction. What I am looking for is some kind of metal insert I can put
in the hole that will have a large inside radius to give the rope a
smooth surface to ride on. I know a pulley would be the ideal solution
but that would make the cabinet unattractive and the force on the rope
will be less than 20 lbs so I think it should work fine with just some
kind of bushing in the hole. The larger the radius the better this
should work. I'm hoping to find something made out of either Stainless
steel or Brass. I guess a plastic would be ok too but I would rather it
be metal.
What I had in mind was something with a similar cross section to the
attached drawing. I could just have a machine shop put a radius on a
brass bushing but I would rather not have to do that, and I haven't
found a bushing with a thick enough wall to get as large of a radius as
I would like, 1/4" or larger.
do not archive
--
Chris W
KE5GIX
"Protect your digital freedom and privacy, eliminate DRM,
learn more at http://www.defectivebydesign.org/what_is_drm"
Ham Radio Repeater Database.
http://hrrdb.com
Message 7
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| Subject: | OT: help looking for a part |
Chris,
Sailboat hardware manufacturer's make something called an exit block which
has a pulley in it, or an exit plate that doesn't have the pulley that works
in a situation like you are describing. They probably won't work if you want
to be able to pull the line from any angle since they are directional.
Here's a link to an exit plate by one manufacturer. From the prices for this
stuff, you would think they were for airplanes.
http://www.fawcettboat.com/iwwidb.pvx?;multi_item_submit
Terry
-----Original Message-----
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of Chris W
Sent: Sunday, June 29, 2008 9:53 AM
Subject: RV-List: OT: help looking for a part
Totally non aviation related but if the part I am looking for exists, I'm
sure someone here knows where to get it.
I have this mechanism (details not important) that is actuated with a rope,
probably 3/16" parachute cord. The rope will exit out of a wood cabinet
through a round hole. The problem is the pull on the rope will be almost at
90 degrees from the axis of the hole causing it to rub on the edge of the
hole which will make the rope wear out and cause lots of friction. What I
am looking for is some kind of metal insert I can put in the hole that will
have a large inside radius to give the rope a smooth surface to ride on. I
know a pulley would be the ideal solution but that would make the cabinet
unattractive and the force on the rope will be less than 20 lbs so I think
it should work fine with just some kind of bushing in the hole. The larger
the radius the better this should work. I'm hoping to find something made
out of either Stainless steel or Brass. I guess a plastic would be ok too
but I would rather it be metal.
What I had in mind was something with a similar cross section to the
attached drawing. I could just have a machine shop put a radius on a brass
bushing but I would rather not have to do that, and I haven't found a
bushing with a thick enough wall to get as large of a radius as I would
like, 1/4" or larger.
do not archive
--
Chris W
KE5GIX
"Protect your digital freedom and privacy, eliminate DRM, learn more at
http://www.defectivebydesign.org/what_is_drm"
Ham Radio Repeater Database.
http://hrrdb.com
Message 8
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| Subject: | OT: help looking for a part |
Hey Chris,
Also in the sailing world, they make deck bushings for just such a perpose.
Go on line to search them out. How big a hole do have in the cabinet.
Paul
Rv8
Message 9
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| Subject: | Re: OT: help looking for a part |
I read all the other replies and while I was thinking of a large brass
grommet ..... like to put in canvass ..... there are far better
solutions already. My question is what the heck does the rope do in the
cabinet???? Answer quickly .... I want to sleep tonight!!! :-P
Linn
do not archive
> Totally non aviation related but if the part I am looking for exists,
> I'm sure someone here knows where to get it.
>
> I have this mechanism (details not important) that is actuated with a
> rope, probably 3/16" parachute cord. The rope will exit out of a wood
> cabinet through a round hole. The problem is the pull on the rope
> will be almost at 90 degrees from the axis of the hole causing it to
> rub on the edge of the hole which will make the rope wear out and
> cause lots of friction.
snip!
Message 10
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| Subject: | Re: OT: help looking for a part |
It is to assist the folding up of a Murphy bed. The gas springs aren't
quite enough to balance out the weight of the bed is with the the rope I
can pull instead of push. Also the tight fit makes it very hard to get
at the foot of the bed to push where there is the most leverage.
So for it looks like the cable fairleads form aircraft Spruce look like
the best option. The catalog doesn't say how large the inside hole is
though.
linn Walters wrote:
>
> I read all the other replies and while I was thinking of a large brass
> grommet ..... like to put in canvass ..... there are far better
> solutions already. My question is what the heck does the rope do in
> the cabinet???? Answer quickly .... I want to sleep tonight!!! :-P
> Linn
> do not archive
>> Totally non aviation related but if the part I am looking for exists,
>> I'm sure someone here knows where to get it.
>>
>> I have this mechanism (details not important) that is actuated with a
>> rope, probably 3/16" parachute cord. The rope will exit out of a
>> wood cabinet through a round hole. The problem is the pull on the
>> rope will be almost at 90 degrees from the axis of the hole causing
>> it to rub on the edge of the hole which will make the rope wear out
>> and cause lots of friction.
> snip!
>
>
--
Chris W
KE5GIX
"Protect your digital freedom and privacy, eliminate DRM,
learn more at http://www.defectivebydesign.org/what_is_drm"
Ham Radio Repeater Database.
http://hrrdb.com
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