Quote Originally Posted by T 20 View Post
Just remachine your piston to take a TX seal, this will put you back to standard stroke.

The 25mm HW seal is 10mm in length and the 25mm TX seal is 6mm in length, the reduced section of the 25mm HW piston arbor is larger in diameter than the TX arbor.
I machine HW50 arbors down to accept a TX seal to Longstroke them by 4mm, so you could effectively do the same with your piston.
For those folks wondering what I'm on about.

Here's a Weihrauch 25mm seal arbor :-

image.jpg



Here's a TX 25mm seal arbor :-

image.jpg



And here are the two arbors for comparison :-

image.jpg


As you can see the Weihrauch seal arbor is bigger than the TX arbor which enables me to machine the Weihrauch arbor down to the size of the TX arbor and use the TX seal which is 4mm shorter than the Weihrauch seal.