No commentWhere's all the snow and ice the media says is crippling the NE?
No commentWhere's all the snow and ice the media says is crippling the NE?
Nice air bags.
Thanks i usualy have more questions the answers.Thank you ! It's all natural, wish I had yours and most all the members knowlage. I am still learning so I may end up with some of it
Thanks i usualy have more questions the answers.
What's the question. These guys may have the Answer.
Did you add the tag, @toolmanmike ? Thanks! I know Ray doesn't read back.Hey Ray, how about you curve me up a distributor for my 273? I don't know if those blue dot springs are right for me but sign me up if they are! @halifaxhops
Snappy and hot, pulling to 7k. Don't know what details you need or if I know them myself yet.
What was the question?
It wont be showing off unless it has a knurled knob and a jam nut…I went down in the basement and took some measurements and made some oil pressure calculations.
The Melling M72HV I have has a pressure regulator plunger with a diameter of 0.622". That's a cross sectional area of 0.304 in2. The pressure relief opening opens when it is depressed 0.42".
The spring that's in the pump has a spring rate of 35 lbs/in so a spring compression of 0.42" corresponds to a spring force of 14.7 lbs.
14.7 lbs spring force divided by area 0.304 in2 means the oil pressure reaches 48 psi before the relief valve opens. Makes sense.
Now. To increase the oil pressure to 75 psi I would need to increase the spring force to 75 x 0.304 = 22.8 lbs.
This corresponds to a spring compression of 22.8/35 inches = 0.65". That's an increase of 0.23" or very close to 6 mm.
So by adding a 6 mm spacer, I should get 75 psi of oil pressure without buying an $8 kit from Summit and paying $11 in shipping.
Or. I could thread the hole and add a screw and a lock nut to get adjustable pressure. But that would be just showing off
I don't have a lathe so knurling is out of the question, I'm afraid.It wont be showing off unless it has a knurled knob and a jam nut…
Not true, lol. Could dimple instead of knurls. Its kind of a knurl…I don't have a lathe so knurling is out of the question, I'm afraid.
Not entirely true. That only determines what pressure bleeds off. Not how much oil pressure you will haveI went down in the basement and took some measurements and made some oil pressure calculations.
The Melling M72HV I have has a pressure regulator plunger with a diameter of 0.622". That's a cross sectional area of 0.304 in2. The pressure relief opening opens when it is depressed 0.42".
The spring that's in the pump has a spring rate of 35 lbs/in so a spring compression of 0.42" corresponds to a spring force of 14.7 lbs.
14.7 lbs spring force divided by area 0.304 in2 means the oil pressure reaches 48 psi before the relief valve opens. Makes sense.
Now. To increase the oil pressure to 75 psi I would need to increase the spring force to 75 x 0.304 = 22.8 lbs.
This corresponds to a spring compression of 22.8/35 inches = 0.65". That's an increase of 0.23" or very close to 6 mm.
So by adding a 6 mm spacer, I should get 75 psi of oil pressure without buying an $8 kit from Summit and paying $11 in shipping.
Or. I could thread the hole and add a screw and a lock nut to get adjustable pressure. But that would be just showing off
If the system is linear, increasing the spring force by 50% will increase the pressure by 50% but I think some measuring and adjusting is probably needed.Not entirely true. That only determines what pressure bleeds off. Not how much oil pressure you will have
Atta boy!Well after a couple of toddies I could not resist and posted some religious humor in the origin of life thread. Sticker on beer fridge. Not sure I am man enough to go back in! I can hear the weeping wailing and gnashing of teeth from here! Them boys needed some levity!
EC small batch made me do it!Atta boy!
Cheers!Well after a couple of toddies I could not resist and posted some religious humor in the origin of life thread. Sticker on beer fridge. Not sure I am man enough to go back in! I can hear the weeping wailing and gnashing of teeth from here! Them boys needed some levity!
That'll do it. Hope to get our barrel pick pretty soon.EC small batch made me do it!