Quote Originally Posted by tokoloshe View Post
Fair point but if custom builds are added you will need this info. Also, as in the TX, different weighted pistons by use of different top hats dictate calibre size in std form. Don't know how much detail you want but suspect more rather than less😊
Anyway, here's some data on a TXHC

Stroke - ~98mm
TP - ~3.65mm x 9.8mm long
Piston wt - ~225g (.177 add 27g for top hat)
(.22 add 16g for top hat)
Bore dia - 25mm

Good point mate!

many thanks for the extra info. Will add these tomorrow

atb
bruce