need some help tension spring for kmg

[Punsg1]

I find Specification of tension spring for kmg because Michael Clerc's plan doesn't talk about spring
thank you
pun

 

[sdemars]

An easy accurate way to determine is use two boards. One with a 6" 1/2" carriage and a nut. Another with a 5/8" hole. Now all you need is an accurate scale. Shipping, bathroom, etc . . .

Or a heavy fishing scale pulling the handle down would work.

I checked compression spring that way & found out later I was within 5% of stated value.

Steve

 

[sdemars]

An easy accurate way to determine is use two boards. One with a 6" 1/2" carriage and a nut. Another with a 5/8" hole. Now all you need is an accurate scale. Shipping, bathroom, etc . . .

Or a heavy fishing scale pulling the handle down would work.

I checked compression spring that way & found out later I was within 5% of stated value.

Steve

 

[bjansen]

I would recomend a gas spring. They are much better, have longer travel and more consistent.

McMaster Carr info below.

Gas Spring with Ball-Joint End Fitting, 30 lb. Force, 9.65" Extended Length, 3.54" Stroke part #4138T53 $15.72
Gas spring mount tab part # 9512K95 $1.67

 

[Punsg1]

I would recomend a gas spring. They are much better, have longer travel and more consistent.

McMaster Carr info below.

Gas Spring with Ball-Joint End Fitting, 30 lb. Force, 9.65" Extended Length, 3.54" Stroke part #4138T53 $15.72
Gas spring mount tab part # 9512K95 $1.67

thank you gas spring is hard to find in thailand

 

[Punsg1]

double post