The Gauge store was the only place I could get a accurate, 1/2 Lbs. increment, large scale Gauge that wasn't overly priced. The machined T I made myself, but I'm sure it could gotten at Grainger . Even easier and cheeper you could use a regular pipe T. I mounted my T to a 1/4 in thick steel plate about 4" x 8" to make everything stay put while using it. The fittings and 1/4 in plastic tubing I used can be bought at the hardware store. The Air Cylinder{ ARO Silverair model SD11 P4B4 004 61} needs to be machined at the base. I took about .150 off the diameter of the base and then I machined the mount on the bottom to .500 in diameter and left a small button on the bottom about .075 thick. Do not take too much off the bottom of the air cylinder or it may be to short to check coil bind. The Air Cylinder can be ordered from John M. Rowe Corp. Schafferstown, Pa. 717-949-6597. There is a nice small low pressure regulator on the Gauge store's site that would work fine and I think it's cheeper than Grainger. The suction cup for the end of the air cylinder shaft I took of my double ended valve lapping tool. I don't use the small end. Make real sure you have no air leaks and be sure to never over pressure the gauge.
The procedure I use is different than the precedure used by EZ-BORE. I first mount a dial indicator on the valve and zero it. Then I give it enough air to push the spring to coil bind and take my measurement off the dial indicator, thats your coil bind, Then I back off the air pressure slowly till my indicator is at a predetermend height for my running lift and take a pressure reading, thats your Nose Pressure. I then back off the air more, very slowly till the dial indicator show's .001 off the seat and then take a pressure reading, that's your seat pressure. This is the procedure I use, weather it's right or wrong. The only way I can get accurate and consistant reading is to follow my procedure. I think it's more accurate because I'm allowing the spring to push the cylinder back down, after all isn't that what your checking? If you think this wrong well you may be right, but it works for me. If you need a question answered Drop me a email or post it in my forum. Have Fun, Go Win and keep it in that order. Written By , Dale Kuhne
The Gauge store Wika Gauge model# 9834133 0 - 60 Lbs.
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