AirArms CD and HW Rekord Trigger Units Interchangeability

[T 20]

Nice one Mick thanks.
Did you relieve the HW rear block with hand tools ? Could you give / do you have details of measurements needed or is it a case of just trial and error until the CD fits ?
2 major problems now..
Firstly getting the piston altered to have a TX latch rod and secondly getting hold of the quite elusive CD trigger unit.

Hi Rob

I just pushed the CD into the back block until the rivets touched, then I lined the cassette up with the pin holes and marked where to relieve for the rivets.
To line the cassette fore and aft, I put pins in the cassette and back block, then with the back block upside down on a flat surface I lined them up with a set square.
I relieved for the pins and slightly opened out the slot using a dremmel and a decent flat file --- a bit time consuming but easy enough to do.

One thing I forgot to mention in my opening post was the fact that the TX piston rod is a bigger OD to the Weihrauch piston rod, so you have to open the spring guide and back block hole IDs to match.

To get your piston altered I'd try NickG as he makes his own pistons and rods, for the CD it's a matter of waiting for a second hand one to come up, or you could try Julian Bond for a new one.




All the best Mick

[robs5230]

Hi Rob

I just pushed the CD into the back block until the rivets touched, then I lined the cassette up with the pin holes and marked where to relieve for the rivets.
To line the cassette fore and aft, I put pins in the cassette and back block, then with the back block upside down on a flat surface I lined them up with a set square.
I relieved for the pins and slightly opened out the slot using a dremmel and a decent flat file --- a bit time consuming but easy enough to do.

One thing I forgot to mention in my opening post was the fact that the TX piston rod is a bigger OD to the Weihrauch piston rod, so you have to open the spring guide and back block hole IDs to match.

To get your piston altered I'd try NickG as he makes his own pistons and rods, for the CD it's a matter of waiting for a second hand one to come up, or you could try Julian Bond for a new one.




All the best Mick

Cheers for the clarification Mick. At the minute I'm not up for buying a new CD unit but will persist in trying to find a used one.