Case Savers questions

[HKZ Bob]

Dear all,

if a case saver outer diameter 14mm x 2.0 will be installed in a 7R housing
isnīt there a risk that the cylinder gasket flange get to narrow.

These kind of case savers as listed at pelican requires a tapped prepared bore.

Is the process as followed.
Bore 12.1 mm and the use a three step tap and perform the M14 thread. But a M14 metric has a slope of 1.5. Why has the case saver a slope of 2.0

would be a 13mm be enough. That would leave 1,5 mm wall thickness.

Hope you can brighten my mind.
Bob

[cgarr]

It does get close to the edge by hand, if you use a mill you can cheat a little and give yourself a bit more room, I have 14mm taps from 1.0mm to 2.0 pitch, nothing really odd about that?

[philippeF]

hello
that's what i've done
i asked the same question a few monthes ago, worked fine

philippe



the car

[HKZ Bob]

Thank you Phillip.
Was the outside diameter M14 x 2.0 for the case savers.
And do you did the work.
Did they use an interference bore or tapped M14 and with loctide glued in the bold.

Bob

[philippeF]

hello
a machine shop did the job
they tappered to fit a M14x2 case saver. (first bored to diameter 12 and then tappered)

[HKZ Bob]

And did you never thought that the surface for the cylinder foot gasket gets to small.

The this copper ones.

Regards RW

[philippeF]

that's rather small, but that works
you may ask another people, i believe they'll tell you this is a "common" operation.
regards
Philippe