Leaking BSA Ultra Valve Advice & Suggestions

[wildy]

Quick update.

On the Ultra the 2nd new valve stem sorted it. I had it serviced a number of years ago (is a very early one) and I measured the valve I removed the first time which was the later one so I ordered that type and installed one of the same. I have now put in the early type which is a little wider and sealed spot on without any polishing to my relief!

The R10 Mk1 was leaking through the reg. New seals throughout and bobs your uncle back to being a tack driver. I was a little confused that the new regulator seals looked a little different to the old ones but I think that was due to the old seals being in for so long that they had gone hard. The middle inner seal almost looked like a flat washer rather than an "O" ring but the new seals worked a treat.

Now my only problem is getting my scuba tank filled as its down to 200bar. Tried topping the R10 up with a pump...sod that for a lark...got about 10 pumps in before I could not get any more in and I'm a heafty bloke...nearly killed me! The Ultra should be OK with the pump though. Just my luck two guns sorted and running out of air.

[the bish]

Tried topping the R10 up with a pump...sod that for a lark...got about 10 pumps in before I could not get any more in and I'm a heafty bloke...nearly killed me! The Ultra should be OK with the pump though. Just my luck two guns sorted and running out of air.

Isn’t there a restrictor screw in the BSA Fill Probe that has to be loosened or removed if you’re filling the gun with a hand pump?

Edit.

Have a look at the filling instructions.
http://www.bondbywater.co.uk/doc_upl...0Multishot.pdf

[jirushi]

Quick update.

On the Ultra the 2nd new valve stem sorted it. I had it serviced a number of years ago (is a very early one) and I measured the valve I removed the first time which was the later one so I ordered that type and installed one of the same. I have now put in the early type which is a little wider and sealed spot on without any polishing to my relief!

The R10 Mk1 was leaking through the reg. New seals throughout and bobs your uncle back to being a tack driver. I was a little confused that the new regulator seals looked a little different to the old ones but I think that was due to the old seals being in for so long that they had gone hard. The middle inner seal almost looked like a flat washer rather than an "O" ring but the new seals worked a treat.

Now my only problem is getting my scuba tank filled as its down to 200bar. Tried topping the R10 up with a pump...sod that for a lark...got about 10 pumps in before I could not get any more in and I'm a heafty bloke...nearly killed me! The Ultra should be OK with the pump though. Just my luck two guns sorted and running out of air.

Nice! Congratulations, good result. Ah yes I remember that now, two sizes of valve heads. All quite confusing. So with the older Ultra's with hammer tube, valve tube and cylinder and thus a steel valve housing instead of the later all brass valve housing, has the wider valve head. I'll make a note of that.
R10 resealed. Now some air and many pleasurable hours ahead of you.
Good point above about the restrictor screw, rings a bell. But in any case do you put your weight on the pump whilst going down? I only weigh 74 kg, I am not strong but I do all my pcp charging with a 15 year old Hill's pump. Buddy bottles I do in 2 episodes. From about 80 to 150 bars, a break, then to 230. Nice to not have to worry about getting a tank filled, imo. My chest is hovering above the pump whilst going down. I kind of "fall" onto the pump handle. Not much force required.