The other day I went out to rescue somebody stuck in the sand. I didn't
of it out of the goodness of my heart. I was headed out to the shop to work... and I didn't want to when I saw their post on a local fishing
group on social media.
You can read about it if you want to here, but that's not the point of
my post: https://www.tacklemaker.info/index.php?board=12.0
At one point I agreed grudgingly to try a pull from the top of a sand
dune with my 3/4 ton truck, because it was probably the best angle to
get the guy back on the road. I knew I should air down, but I figured I could make a speed run to the top of the hill with out doing so just to
check it out. Plus I didn't want to. Airing down 37 11.7 tires takes a while. (I think that's old school size. I know they are 11.7 anyway.)
I bounced up to the top of the sand dune, decided it was to soft, and
buried it as I tried to back off.
The guy I was helping jacked up the truck and filled in the holes while
I aired down. It took substantially longer to air down the tires to 12
PIS (my ideal sand pressure) than it did for him to jack up all 4
corners of the truck one at a time, shovel sand in the holes, and give
me a nice flat run to back out.
I was wondering if there might be a simple screw on regulator I could
preset to desired air down pressure screw one onto each valve stem, and
sit in air conditioned cab of the truck to sip a water while I waited.
If there isn't one, just how hard would it be to make one? Well four... well eight. I'd like a set in the Jeep too.
For those who want to know how it went without reading my adventure
story at the link above. With the tires aired down I made about 10-12 slingshot pulls with recovery straps from th top of the sand dune, only stopping when my truck stopped moving as it started to bury itself. With aired down ties the truck drove right out of its own holes every time.
I took the 3/4 ton crew cab diesel 4x4 instead of the Jeep, because I
figured mass was better than flotation for doing a recovery. It was.
"Bob La Londe" wrote in message news:v3ksno$3vlg0$1@dont-email.me...
The other day I went out to rescue somebody stuck in the sand.
---------------------------
I did all my off road playing on a dirt bike I could (and often did) manhandle out of mudholes.
An uncle in Colorado showed me how he had modified an old A/C compressor
pump into an engine driven air pump to reinflate the tires.
https://www.garagejournal.com/forum/threads/car-a-c-compressor-used-as-an-air-compressor.361016/
"A car compressor like an old York used on AMCs, Fords, etc. are piston positive displacement pumps with a sump containing oil. They will work
as an air compressor. Newer swash plate type compressors or rotary compressors circulate oil and are not as good as an air compressor."
If you put tire valve male and female fittings on an air hose you could deflate and reinflate from inside the cab. The thread is close enough to 5/16-32, a standard if uncommon tap size.
You are suggesting a pressure relief valve. I suspect a commercial valve would need the spring changed to a softer one to make adjustment less
fussy. They aren't hard to make, the used control valve I bought for my tractor bucket loader had a fixed setting relief that I modified to be user-adjustable according to an added gauge. The actuator plunger
consisted of a tap bolt with the hex head turned round and grooved for
an O ring, which sealed the low pressure drain side. It compresses a
spring that presses the original valve disk against the orifice.
Originally the relief pressure had been set with shims.
Usually I make thumbscrews and control knobs from knurled aluminum.
Recently I tried knurling acetal which turned out very well, clean and
sharp.
I mentioned converting a pull ring pressure relief to a cam handle. The
cam lever is a sheet aluminum rectangle bent into a channel over stock a little thicker than the valve stem diameter, and mostly filed to a
rounded cam profile to lift the valve and hold it open.
"Bob La Londe" wrote in message news:v3ksno$3vlg0$1@dont-email.me...
The other day I went out to rescue somebody stuck in the sand.
---------------------------
I did all my off road playing on a dirt bike I could (and often did) manhandle out of mudholes.
An uncle in Colorado showed me how he had modified an old A/C compressor
pump into an engine driven air pump to reinflate the tires.
https://www.garagejournal.com/forum/threads/car-a-c-compressor-used-as-an-air-compressor.361016/
"A car compressor like an old York used on AMCs, Fords, etc. are piston positive displacement pumps with a sump containing oil. They will work
as an air compressor. Newer swash plate type compressors or rotary compressors circulate oil and are not as good as an air compressor."
If you put tire valve male and female fittings on an air hose you could deflate and reinflate from inside the cab. The thread is close enough to 5/16-32, a standard if uncommon tap size.
You are suggesting a pressure relief valve. I suspect a commercial valve would need the spring changed to a softer one to make adjustment less
fussy. They aren't hard to make, the used control valve I bought for my tractor bucket loader had a fixed setting relief that I modified to be user-adjustable according to an added gauge. The actuator plunger
consisted of a tap bolt with the hex head turned round and grooved for
an O ring, which sealed the low pressure drain side. It compresses a
spring that presses the original valve disk against the orifice.
Originally the relief pressure had been set with shims.
Usually I make thumbscrews and control knobs from knurled aluminum.
Recently I tried knurling acetal which turned out very well, clean and
sharp.
I mentioned converting a pull ring pressure relief to a cam handle. The
cam lever is a sheet aluminum rectangle bent into a channel over stock a little thicker than the valve stem diameter, and mostly filed to a
rounded cam profile to lift the valve and hold it open.
Hi all
Back in about February I pulled some folk out of where they had sunk
into the grass. Has rained so much here and we had no clearly
identifiable Spring.
Was funny walking along inventing a "Wurzels like" song about taking my
rope for a walk (cider-drinking world - including famous "I am a cider drinker" song).
Want to find a light block can attach to vehicle being towed, end of
rope to fixed object, so getting 2:1 advantage with rope attached to towing-point of towing car.
Only had 1:1 then - but mercifully I had a long coil of rope so I could
tow from the tarmac some distance away.
Was at an event where the booked venue had fallen-through and an
enterprise at an airfield had stepped in - bless them.
Rich S
As a designer from Bulgaria I sometimes work with told me, "The more off
road capable is your truck the further you need to walk to find a
tractor." I guess rednecks are the same all over the world.
Bob La Londe <none@none.com99> on Mon, 10 Jun 2024 12:23:38 -0700
typed in rec.crafts.metalworking the following:
As a designer from Bulgaria I sometimes work with told me, "The more off
road capable is your truck the further you need to walk to find a
tractor." I guess rednecks are the same all over the world.
Friends comment is "4x4 just means a longer walk once you're
stuck."
Here in New England there's no lack of mud and boulders, but the most >challenging off-roading can be driving home from work an inch or two -above- >the pavement during an ice storm. Traffic almost never completely disappears >and the few times it did a friend and I would slide around on the iced roads >on our dirt bikes. The nearly empty roads became playgrounds for drivers
with vehicles that could handle them, mainly small foreign cars capable of >controlled sliding. Full time all wheel drive is somewhat disappointing >because it doesn't allow locking only the rear axle with the handbrake to >enter a spin or a J (bootlegger) turn. I could spin and recover my Ranger on >ice though I didn't see much stunting with full sized trucks.
"Jim Wilkins" <muratlanne@gmail.com> on Tue, 11 Jun 2024 07:32:44
-0400 typed in rec.crafts.metalworking the following:
Here in New England there's no lack of mud and boulders, but the most
challenging off-roading can be driving home from work an inch or two -above- >> the pavement during an ice storm. Traffic almost never completely disappears >> and the few times it did a friend and I would slide around on the iced roads >> on our dirt bikes. The nearly empty roads became playgrounds for drivers
with vehicles that could handle them, mainly small foreign cars capable of >> controlled sliding. Full time all wheel drive is somewhat disappointing
because it doesn't allow locking only the rear axle with the handbrake to
enter a spin or a J (bootlegger) turn. I could spin and recover my Ranger on >> ice though I didn't see much stunting with full sized trucks.
At the cost of trucks these days ... no surprise.
Snag <Snag_one@msn.com> on Mon, 10 Jun 2024 22:07:34 -0500 typed in >rec.crafts.metalworking the following:We used to say 4wd just means you need to carry a longer chain - or it
On 6/10/2024 3:23 PM, pyotr filipivich wrote:
Bob La Londe <none@none.com99> on Mon, 10 Jun 2024 12:23:38 -0700
typed in rec.crafts.metalworking the following:
As a designer from Bulgaria I sometimes work with told me, "The more off >>>> road capable is your truck the further you need to walk to find a
tractor." I guess rednecks are the same all over the world.
Friends comment is "4x4 just means a longer walk once you're
stuck."
My idea of 4 wheelin' is to go in 2 wheel drive until you get stuck . >>Put it in 4 wheel and get unstuck and go home . We have a 4 wheel drive
and chains because without we could end up stuck down here unable to get >>out in an emergency in winter . I haven't needed the chains yet .
Smart.
"Bob La Londe" wrote in message news:v4cqah$1pk8f$1@dont-email.me...
On 6/12/2024 11:14 AM, pyotr filipivich wrote:
"Jim Wilkins" <muratlanne@gmail.com> on Tue, 11 Jun 2024 07:32:44
-0400 typed in rec.crafts.metalworking the following:
... and yet the money some folks spend on their off road rigs just to go
out and try the hardest trails and beat them up is crazy.
Bob La Londe
----------------------------------------
The craziest vehicle misuse I've watched was snowmobiles on water.
Powerful ones can stay on plane at sufficient speed but none turn very
well. Surprisingly the failures could eventually be started again after
being dragged out of the water.
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