Fitting a Welsh Willy kit to an '86 Supersport

[TonyL]

As Nick mentioned earlier, you really could do with access to a chrono. Before and after readings are important as they'll tell you if you have improved things or not. Much more importantly you need to ensure you don't go over the limir. Supersports, especially in .22, can easily and comfortably exceed our 12ft.lbs limit. When I fitted a new standard spring (and TbT guides) to my 1986 .22 version, it was exceeding the limit by a wide margin yet felt very civilised to shoot. Two shortenings later it shoots at just below the limit with its most efficient pellet and feels very benign.
As also mentioned, you need that "stepped prong" to push down on the rear of the spring guide whilst clearing the pin. Beware that some of the pins in the trigger mechanism might be loose and fall out. And pay attention to trigger parts orientation as you'll most likely need to remove them to get the piston out. Looking at some images and schematics will help there.

[Dornfelderliebe]

Your kit should have some of Willy's grease in it Segata. If you don't have a suitable spring compressing tool Don't try to remove the spring. What I would do for now is take photos of the trigger layout and disassemble then refit it with extra pictures so that you can put it together and are familiar with the layout.
The tool that Nick is talking about is a tube or rod smaller than the internal diameter of the cylinder. The end of this tool going into the cylinder has a cut out slightly bigger than the large pin that holds the spring in.
DON'T MESS WITH THAT PIN UNTIL YOU ARE 100% SURE YOU KNOW WHAT YOU ARE DOING.
Using your compressing device.
The tool broom handle or metal tube or strengthened plastic tube pushes the spring guide and spring past the pin enabling it to be wangled loose* and pulled out. *Do you like my expert engineering terms?
Then you wind back the tension until the whole lot comes out.

If you are using a sash clamp and home made pin clearing tool be prepared for the spring popping out so be ready for bouncing bits*
Safety glasse would be a good precaution.

I have to say this is based on doing Meteors which have the same arrangement but a probably softer spring. I have not done a Supersport yet.

[Segata]

Thanks Gents, guess I best make this tool before I clean up the work area then, recken some old Cabinet wood would do? Otherwise I'll try and buy an appropiate broom handle or pipe.

[TonyL]

Thanks Gents, guess I best make this tool before I clean up the work area then, recken some old Cabinet wood would do? Otherwise I'll try and buy an appropiate broom handle or pipe.

Some strong, hard wood would definitely do.

[lightning22]

If you have a 3d printer there's a BSA spring compressor adaptor on Thingiverse.

[Segata]

If you have a 3d printer there's a BSA spring compressor adaptor on Thingiverse.

Sadly no, been wanting one for years though as they are handy for a lot.

[lightning22]

Sadly no, been wanting one for years though as they are handy for a lot.

Ping me your address, I've just run one off and it has printed really nicely.

[Segata]

If I had the parts I'd do the 25 first for practice as it's a weaker and simpler looking gun from what I can tell, I still need to message Dan so I'll ask him best approach etc and about that tool as I'm not sure on species of the wood I have to hand.
In the mean time I guess I can do the work on the Daisy, similar principle in a way, that I'm going to try an wing it with chopsticks as they should be strong enough to get the spring block free, she's technically been waiting the longest too as she is what started my journey, seeking how to mod her was what brought me into the greater hobby and probably why 1 Gun quickly multiplied.

[TonyL]

Your kit should have some of Willy's grease in it Segata. If you don't have a suitable spring compressing tool Don't try to remove the spring. What I would do for now is take photos of the trigger layout and disassemble then refit it with extra pictures so that you can put it together and are familiar with the layout.
The tool that Nick is talking about is a tube or rod smaller than the internal diameter of the cylinder. The end of this tool going into the cylinder has a cut out slightly bigger than the large pin that holds the spring in.
DON'T MESS WITH THAT PIN UNTIL YOU ARE 100% SURE YOU KNOW WHAT YOU ARE DOING.
Using your compressing device.
The tool broom handle or metal tube or strengthened plastic tube pushes the spring guide and spring past the pin enabling it to be wangled loose* and pulled out. *Do you like my expert engineering terms?
Then you wind back the tension until the whole lot comes out.

If you are using a sash clamp and home made pin clearing tool be prepared for the spring popping out so be ready for bouncing bits*
Safety glasse would be a good precaution.

I have to say this is based on doing Meteors which have the same arrangement but a probably softer spring. I have not done a Supersport yet.

And there's a bit more to the Supersport trigger.

[Dornfelderliebe]

And there's a bit more to the Supersport trigger.

That's why I suggested a dry run with photos. I looked at the parts diagrams and immediately had to run to the toilet.
This is where the Rekord wins hands down. All in one just make sure you reset it.

[TonyL]

That's why I suggested a dry run with photos. I looked at the parts diagrams and immediately had to run to the toilet.
This is where the Rekord wins hands down. All in one just make sure you reset it.

And agreed re the Rekord.