Webley Longbow .... Click on cocking

[ken69]

Just checked my Longbow and it is exactly the same, a click about 25% through the cocking stroke. Also checked the Omega and it is totally silent when cocking

[TopDog]

Just checked my Longbow and it is exactly the same, a click about 25% through the cocking stroke. Also checked the Omega and it is totally silent when cocking

Not all BrumBows do it; only about half mine did! I have some now fitted with a longstrokes piston where a new set of cutouts are made on the opposite side of the piston and the cocking slot was cut 0.5mm less deep than standard - no clicking! The increased stroke of 6mm means a less fussy tune gets excellent results in 0.177 calibre models. My original prototype (which I still have!) for long stroking had an increase of 8mm (the maximum achievable) but one required a longer cocking link (shotened Tommy!) and one lost the auto-safety feature! Steve Pope made all the mods for me and offers the +6mm stroked and glided piston as a tuning item now!

All mods I do to any model are rigorously investigated using dynamic techniques so I have voluminous records for recoil and vibration data collected over the last 8-10 years or so. Am busy trying to qunatify "awesome firing cycle" now which is proving far more challenging than just quanitying "gentle nudge in the shoulder" which is why I started all this!

I do agree with earlier post that the BrumBow is the finest medium weight barrel cocker on the planet! However, since now extinct, they will only get rarer!

As a quick addition; it is possible to re-shape the forward edge of the "mushroom" to reduce it's sharpness and decrease the friction at the forward end and, when done properly, I understand it eliminates the click too! Not as reversible as the disc though!

Oh; one could conceivably insert a piece of 0.5mm material in the cocking slot if one has the skill and patience!

Good luck all BrumBow fans.

atvb
David

[andrewM]

A very interesting thread and, in consequence, I have checked mine. Sure enough, I have the click too at about 25% of the stroke but I had not noticed it before. It is slight and largely unnoticeable unless one is listening for it. Perhaps it is louder in other rifles and needs attention therefore.

The very supportive comments about Longbows on this site caused me to buy one a few months ago when a virtually unused one came up. The previous owner took it out once a year and fired six shots down it and then returned it to its box. I was delighted to take it, given it is Birmingham made and has that magnificent blueing plus, of course, the heritage.

I think, however, it has still to be run in.

What, I wonder, are other Longbow owners finding best for pellets? I find mine, which is a .22, is quite pellet fussy (as is my Omega) but I am getting pellet touching groupings at 25yds with H&N Spitskugel (Pointed) and Excite Spike (also made by H&N but the pellet is a little lighter and a ribbed version).

What velocities are owners achieving with their pellets?

[pastie]

Interesting reading there Topdog...I bet it shoots sublimely. They really were a work of metal and wood art. I had always been a Germaniac but always had the penchant for Webleys.
The Omega was a nice rifle, barrel and trigger didn't quite cut it.....The Brumbow on the other hand...is light, shoulders well and accurate with a trigger that is faultless. If Webley had made it 10 years sooner they may have been in a different place.

[pastie]

Hi Dave,

Any pics of that fix in situ ?

Wonder if PTFE sheet may be able to be used (is it robust enough) ?

[TopDog]

Hi Dave,

Any pics of that fix in situ ?

Wonder if PTFE sheet may be able to be used (is it robust enough) ?

Here's a pic from my file; not the best I'm afraid; will see if I can find some time after the holiday to take some from one of the collection!

http://freepdfhosting.com/b339a1a905.pdf

PTFE is not sturdy enough but PET may be fine and, I think, readily available in sheets!

The discs do not last forever though but longevity can be vastly improved by smoothing the edges/corners of the cyl slot!

It would be very easy (although I have never tried it!) to cut a profile matching the piston slot and fixing with a dab or few of supoerglue or appropriate Loctite!

Can't recall who it was who recommended re-profiling the miushroom head since it was quite a while ago!

Anyway BrumBow fans, happy airgunning!

atvb
David

[pastie]

Cheers Dave,

I was thinking of using a little bit of Polymorph in a donut...it's easy to shape in situ and hard as nylon when cooled again. Can wear down but it would also be easily and cheaply replaced....see how it goes in a week or two might have feedback.