Quigley hollow

[hmangphilly]

I am after a piece of 22mm bore by 1.5mm wall to give 25mm od, Charlie gave me a link but they are on holiday, but no rush I am working on the 21mm at the moment.

The first comp tube I sleeved, was a 26mm hw, I sleeved reamed and then honed to 25mm, it was a right faff, and difficult to size properly as my bore comparator does not go down to 25mm.
The precision tube is very good to start with as its drawn.

My elder brother, ( a retired engineer), put me on to labrynth sealing its used on gas compressors where lube and friction are important, just experimenting at the moment.

cant do 22mm id x 1.5 wall nick but got an idea .
especially if its for a tx......say it is

[Shed tuner]

Was thinking of rodless designs, too.

Are the Hatsan 55/60 rodless? I'm thinking, they're longer stroke? Which'd be what's needed for the "small bores" to work?

I think there is a flaw with a rodless, bodiless piston design....

[Shed tuner]

item # 111668880867

[NickG]

item # 111668880867

Thanks john

[NickG]

cant do 22mm id x 1.5 wall nick but got an idea .
especially if its for a tx......say it is

It is

[TonyL]

I think there is a flaw with a rodless, bodiless piston design....

Ah, yes, indeed there would be JB!

Didn't realise we were talking "bodiless"!

Beats better than headless, though; now, THAT would be a silly idea!!!!

[hmangphilly]

item # 111668880867

how you fixing it in jon ?

[Shed tuner]

how you fixing it in jon ?

loctite 680

Although on my PE I plug welded it in

[prosport.177]

The cds tube i bought was 25mm od 22 id .)

[Shed tuner]

The cds tube i bought was 25mm od 22 id .)

Yup, defo the best spec for sleeving a 25mm TX down to 22

[NickG]

The cds tube i bought was 25mm od 22 id .)

I found the company Charlie, a good price but they are away for 2 months, just my luck

[hmangphilly]

it's quite good stuff nick.

measured some up last night for roundness of bore and consistency along the 150 mm length that a tube would be ..

knocked spots off a nearly new std tx tube... the variation was shocking

[Shed tuner]

it's quite good stuff nick.

measured some up last night for roundness of bore and consistency along the 150 mm length that a tube would be ..

knocked spots off a nearly new std tx tube... the variation was shocking

Interesting to hear. Empirically I have found a lot of variation in TX tubes; there are definitely good and bad....

[hmangphilly]

It had a lovely cross hatch finish .
Just no where near straight walls or round bore

[Shed tuner]

It had a lovely cross hatch finish .
Just no where near straight walls or round bore

Which rather explains why o-rings can give mixed results in them...

(is Nick listening ? )