Airsporter RB2 tune

[Shed tuner]

Great. We eagerly await the birth of the BSA ShedSporter SB.

I like the early Airsporters. the Mk I & II. The conical breech exempts them from conversion though, so I suppose a late BSA Airsporter-S with the heavy barrel would be the optimum for sliding breech. I wonder if there is enough room in there for making a 22mm longstroke, to give low recoil etc?

it needs the RB cylinder - just throw away the breech itself, and it's ready to go... worst case I might open the access port up a bit. I already have some 30mm OD (need to shave 1mm off) 24mm ID tube that I used some of for my hw80, so that's sorted - it'll be 24mm. Just trim down an hw or tx piston to suit.

[look no hands]

it needs the RB cylinder - just throw away the breech itself, and it's ready to go... worst case I might open the access port up a bit. I already have some 30mm OD (need to shave 1mm off) 24mm ID tube that I used some of for my hw80, so that's sorted - it'll be 24mm. Just trim down an hw or tx piston to suit.

This is the sort of thing I'd love to do but don't have the engineering knowledge.

This will be highly interesting to see being done.

I once had the idea of trying to convert a BSA Spitfire into a Mercury PCP but all the dimensions were wrong.

Pete

[Shed tuner]

This is the sort of thing I'd love to do but don't have the engineering knowledge.

I will demonstrate how little skill is needed, trust me

[look no hands]

I will demonstrate how little skill is needed, trust me

I expect a lathe is needed?

Pete

[Hsing-ee]

I expect a lathe is needed?

Pete

If you see Jon's lathe, you would be a bit taken aback. The Shed Tuner name is completely accurate, and the lathe is something that might have come from the metalwork room of a 1940s School for Children of the Undeserving Poor.

Nothing fancy.

As far as I can tell he taught himself, just got in there and did it. Very few of his guns are 'lookers', all for performance.

Now if you got an old lathe and, say for example, an HW35 ....

[look no hands]

Now if you got an old lathe and, say for example, an HW35 ....

Don't need no lathe, an angle grinder will do

Pete

[Shed tuner]

If you see Jon's lathe, you would be a bit taken aback. The Shed Tuner name is completely accurate, and the lathe is something that might have come from the metalwork room of a 1940s School for Children of the Undeserving Poor.

i feel i should be somewhat offended, but your description is uncannily accurate.

[TonyL]

it needs the RB cylinder - just throw away the breech itself, and it's ready to go... worst case I might open the access port up a bit. I already have some 30mm OD (need to shave 1mm off) 24mm ID tube that I used some of for my hw80, so that's sorted - it'll be 24mm. Just trim down an hw or tx piston to suit.

Sounds good. Looking forward to this one.

[look no hands]

it needs the RB cylinder - just throw away the breech itself, and it's ready to go... worst case I might open the access port up a bit. I already have some 30mm OD (need to shave 1mm off) 24mm ID tube that I used some of for my hw80, so that's sorted - it'll be 24mm. Just trim down an hw or tx piston to suit.

So then Jon are you going to be building in some sort of anti bear trap system?

Pete

[look no hands]

The other niggly problem I can see is the breech end of the barrel will be flush with the end wall of the cylinder, doesn't make it very easy trying to get a pellet in the bore, at least with the usual suspects (PS/TX/97) the barrel protrudes and allows a bit easier access to insert a pellet, I don't think it's going to be easy to get the barrel out to move back either with out doing damage to the cylinder.

Or are you going the whole hog and fitting a completely different barrel?

Pete

[Shed tuner]

Or are you going the whole hog and fitting a completely different barrel?

Pete

yup, will fit a new barrel and have it protruding in 8mm ish, like a tx or hw... the current bore is too loose at the breech anyways, the pellet would just fall out backwards.

ABT I have no idea, I might just hold tight to the lever, like you have to do on a HW77/97

[look no hands]

yup, will fit a new barrel and have it protruding in 8mm ish, like a tx or hw... the current bore is too loose at the breech anyways, the pellet would just fall out backwards.

ABT I have no idea, I might just hold tight to the lever, like you have to do on a HW77/97

Would it be treated to a rotary piston with bearings?

Pete

[Shed tuner]

Would it be treated to a rotary piston with bearings?

Pete

probably, because it's actually easier...

[look no hands]

probably, because it's actually easier...

Interesting, so what are you going to do about the trigger set up, are you going retro fit CD or something else?

Pete

[Shed tuner]

Interesting, so what are you going to do about the trigger set up, are you going retro fit CD or something else?

Pete

Rekord...