PPco Occular Housing thread

[AlphaMic13]

Hi Guys

Recently been given the opportunity to buy a couple of PPco scope parts. Its something I don't really want to pass ip on as spares are hard to come by. One of the scopes the long cone version has a crushed ocular housing but the tube and internals are in very good condition. The other scope is a earlier stepped cone but the tube is rotten and some internal parts are missing but the ocular housing is in great condition. Between the two you could make one good scope so my question is are the two ocular housings interchangeable? Will the stepped cone housing fit on a long cone tube and would it be functional optically.

would be interesting to know before I cross anyone's palm with silver.

Regards

MAC

Information

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[Peter Laidler]

If I was you I'd try them - or ask him to try it before you buy. I would imagine that they're interchangeable - theoretically! But whether they will be in practice is quite another matter, as we quickly learn with the No32 telescopes. Same drawing, different rulers as we used to say!

[AlphaMic13]

If I was you I'd try them - or ask him to try it before you buy. I would imagine that they're interchangeable - theoretically! But whether they will be in practice is quite another matter, as we quickly learn with the No32 telescopes. Same drawing, different rulers as we used to say!

Hi Peter

thanks for reply.. I did ask that but the guy stated that the ocular housing was stuck and essentially its sold as is.. I get the impression he isnt willing to mess around with it. I do have another long cone version but i can't undo the ocular housing on that either and id rather not mess with it as its optically excellent..for a 100 yr old scope that is and id rather just leave as is.

So id be happy to hear from anyone who has both and is willing to see if both housings are interchangeable.

Regards

Mac

[Peter Laidler]

Like I said........... Even if the 'anyone else' has a pair that fits/matches, the same No32 rules apply. HIS might, but your's might not. Same drawing, different rulers! Have you ever tried to fit different manufacturers ocular lens counter cells? Or what about cursor slides?....... Sorry, just the pessimist but REALISTIC pessimist in me!

[AlphaMic13]

Thanks for reply Peter

Re counter cells, cursor slides and ocular housings.. quick answer no.

Not really an option with a S&B. If we did have issues which was rare we used to send them back with the long to Guys like you to deal with.

Though we are talking much more modern optics in that scenario.

I agree regarding your No32 rules.. perhaps I should have re worded it and asked if anyone has had any success interchanging them rather than if they are interchangeable I guess I will have to buy blind and take my chances.

Thanks for heads up, at least I know there is a possibility either side.

Regards

MAC

[Peter Laidler]

The best - or worst, depending on your point of view - was the OG ray shade at the end of the No32/42/53/71tube. You have a job getting any of them to fit another scope.

[AlphaMic13]

Oh yes... I have had various different spares including objective ray sheilds and ocular lens rings to name but a few for the 32scope in the parts bin of my fathers place, Many different makes too and I know first hand that a lot of the visually identical parts annoyingly don't fit other No32 scopes. Too be honest I didn't realise that this would be a potential issue with the PPco ocular housings as it was only made by PPco and no other contractor and seemingly used a standard thread but as you say you can never tell.

regards

mac

[Simon]

I'll check a few of mine out for you when I get home later but if memory serves they are actually interchangeable.

Cheers,

Simon.

[Peter Laidler]

The trouble comes not when they actually screw in, but when they screw in LOOSE. That way you effectively have a prismatic lens and if you have a prismatic lens or in our scenario, a lens that moves, albeit very slightly, then all is lost

[AlphaMic13]

Guys thanks for all your replies I do appreciate it. With peters advice at least we know what to potentially expect and with this in mind Simon I'm sure you will be ultra careful when attempting to trial it after all these things aren't exactly growing on trees.

Many thanks

Mac