i want to use a BP cuff (without the cuff) setup to pressure test chain saws. What is the the equivalent pressure to about 7psi relating to mm/hg that is displayed on the pressure gauge?
BP cuff/sphygmomanometer for pressure test?
- Thread starter 9050lx
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That is a great idea. Let us know if it works. There is no way to use it to check vacuum is there?
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Yeah. I think the gauges only go up to 300 mm/hg or so.Probably close enough.Looks like disconnecting the BP cuff is easy enough.I have a mityvac that only tests vacuum.
Use a purge primer. They have check valves in them. Work like a charm. They produce 30lbs of pressure on one side and at least 1.hg vacuum.
I used one with a compound guage from a cheap fuel injection tester for years, until I scored a brand new Stihl $250.00 tech tool in a box of defunct dealer stuff.
I used one with a compound guage from a cheap fuel injection tester for years, until I scored a brand new Stihl $250.00 tech tool in a box of defunct dealer stuff.
I'm gonna try the BP tester first and pump up to the high point of the gauge.Just squeeze the bulb until pressure achieved, close the thumb screw and watch the meter.Whats appealing is you can find these at thrift stores for 5 bucks.Plus I already have one.
It's good to utilize things you already have; no doubt.
............"more than one way to skin a cat
"
............"more than one way to skin a cat
"
I thought I was the only one to use a blood pressure bulb to check pressure, I just teed in a pressure gauge.
Yeah, I have a psi low pressure gauge somewhere, may hookup both at the same time to check equivalent pressure.Some of these things are well made and cheap.
I just used the bulb on mine, not the pressure gauge that came with it. I hooked a low pressure gauge to the bulb with rubber hose and a tee fitting then to the saw. Works great on pressure, not too well on vacuum unless I can think of something...
I’ve recently cobbled together pressure and vac test setups for both case and carb through various combinations of:
* automotive vac/ fuel pressure gauge
* Bike/ball pump
* Automotive compression tester hose (remove schraeder valve)
* Cheapo vac brake bleeder
* random bits of hose/tees/ fittings etc.
The brake bleed kit included a little thing that made adapting a basketball needle to the system very easy. If that didn’t work, I had planned to use a blood pressure cuff as you did. I suspect it would have worked fine.
My only new expenditure I had in all this was the $2 Schraeder tool.
* automotive vac/ fuel pressure gauge
* Bike/ball pump
* Automotive compression tester hose (remove schraeder valve)
* Cheapo vac brake bleeder
* random bits of hose/tees/ fittings etc.
The brake bleed kit included a little thing that made adapting a basketball needle to the system very easy. If that didn’t work, I had planned to use a blood pressure cuff as you did. I suspect it would have worked fine.
My only new expenditure I had in all this was the $2 Schraeder tool.
I've done this. When used for vacuum I pull the bulb off, suck on that end of the tubing and clamp the tubing to maintain suction. Not precise but it worked.
