Butterfly latch preload?

[no704]

• I’m sure there should be a little bit of preload on this by spacing the strike further away from the latch, but how much?

 

[no704]

I suppose i could Mount one on a set of vice soft jaws and play with it. Might be the opportunity to buy a set of gauge pins I’ve been wanting!

 

[Beerhippie]

The hasp retracts as you turn the key--why would it need preload?

 

[whateg01]

The hasp retracts as you turn the key--why would it need preload?

I think that's what he's getting at. How far apart should they be so it's tight but not too tight when latched

 

[Beerhippie]

I think that's what he's getting at. How far apart should they be so it's tight but not too tight when latched

RTFM?

Looks like it has a big spring to cut you some slack.

 

[whateg01]

RTFM?

Looks like it has a big spring to cut you some slack.

Lots of hardware I've bought didn't have a FM to R. Guessing maybe op has the same situation.

 

[no704]

I think it should put some load into the spring so it’s positively latched.

 

[Beerhippie]

Lots of hardware I've bought didn't have a FM to R. Guessing maybe op has the same situation.

True. A simple mounting template wouldn't really be too much to ask for, would it?

 

[The Cobbler]

I'd get a scrap of plywood & do some tests by installing the pcs and see how it latches. it's not a precision measurement you're looking for

 

[Beerhippie]

I'd get a scrap of plywood & do some tests by installing the pcs and see how it latches. it's not a precision measurement you're looking for

Well, are you compressing a seal? That might matter a bit.

 

[whateg01]

Well, are you compressing a seal? That might matter a bit.

If I was compressing a seal, I would use a different style that closes a fixed amount.

 

[no704]

Not compressing any seal. This is an additional shield layer that will encompass the other from the machining tungsten thread. I will be recasting the ugly half again on Monday. Thinking I’ll put two of these latches on each side.

 

[Beerhippie]

^Pb?

 

[no704]

Oh sorry Pb is lead. Yes 1l thick lead. My second most favorite material to machine! Tools do last a lot longer!