Diana 35/50 synthetic seal?

[Geezer]

As far as I know, these venerable old Dianas used leather seals until they went out of production in 1984ish.

Was musing how they might perform with synthetic seals. Badly, I think - the 35 has a 4mm TP and the 50 has a tap. So, like 4mm TP HW35s converted to synthetic, I guess they'd have a slammy shot cycle, but no greater power.

Just wondering if anyone on here has ever encountered a synthetic seal conversion on one of these, and how it performed?

[Papa g]

As far as I know, these venerable old Dianas used leather seals until they went out of production in 1984ish.

Was musing how they might perform with synthetic seals. Badly, I think - the 35 has a 4mm TP and the 50 has a tap. So, like 4mm TP HW35s converted to synthetic, I guess they'd have a slammy shot cycle, but no greater power.

Just wondering if anyone on here has ever encountered a synthetic seal conversion on one of these, and how it performed?

Hi mate, I converted a original/diana 35 to a synthetic seal, got a tad more power but definitely better shot to shot consistancy I also reduced the tp to 3mm with brass tube
Regards Graham

[Shed tuner]

the 4mm port could be sleeved down fairly easily, presumably ?

[jonnyone]

As far as I know, these venerable old Dianas used leather seals until they went out of production in 1984ish.

Was musing how they might perform with synthetic seals. Badly, I think - the 35 has a 4mm TP and the 50 has a tap. So, like 4mm TP HW35s converted to synthetic, I guess they'd have a slammy shot cycle, but no greater power.

Just wondering if anyone on here has ever encountered a synthetic seal conversion on one of these, and how it performed?

I changed from a leather to a ptfe seal many.moons ago on a 50. Aside of losing interest part way through. Putting gun aside in plastic bag then trying to reassemble two years later it went straightforward
I can't honestly recall performance figures top.of my head as this must have been thirteen or fourteen years ago and gun has sat in gun rack since but I think power increased from memory? Certainly didn't go backwards in.performance or it would have been reversed.
Dave

[Papa g]

the 4mm port could be sleeved down fairly easily, presumably ?

Hi Jon, the TP is angled but there is no crank in it so a piece of 4mm o/d, 3mm i/d brass tube can easily be glued in with locktite
Regards Graham

[Shed tuner]

Hi Jon, the TP is angled but there is no crank in it so a piece of 4mm o/d, 3mm i/d brass tube can easily be glued in with locktite
Regards Graham

perfect

Go for it Geezer.....