HW77 Tuning

[Stormdancer]

Just traded in my Huntsman Regal(too light for me) and as part of the deal I got an older model HW77 full length in a nice Thumbhole stock .22 cal. Now internally it has a heavy duty stainless spring guide (looks like a TR Robb one) which when I added one preload washer to bring the power up a tad stoped the piston latch from engaging, it seems very long but could be shortened. I fitted a delrin spring guide and top hat from a TX kit and it shoots OK around 10.5 ft Ibs but the spring has a lot of preload and is a bugger to get the trigger block in.no Idea what make of spring it is,
Now my local shop gave me a new HW77 spring he had in stock but the internal diameter is too small for my spring guides are the later springs smaller ID?.
Question; is it worth buying spring guides that fit, will it fit over the latch rod OK ? Haven't stripped it again yet.
Option 2 is just buy a new tuning kit with a new spring .
Fancy a V Mach never tried one.
Any advise as always very greatful.

[tinbum]

TR Rob kits came with non standard ID springs which is why your guides won't fit the new one. It's getting coil bound, removing a coil will allow a preload washer, but it'll be self defeating! Maybe try a new piston seal?
New guides would be designed for the spring you now have and fit the latchrod perfectly as that has always been the same size. If it shoots well as it is then leave it, but if you're curious give the new spring a go and see what you think.

[Stormdancer]

The spring in the gun (unknown make) that the steel spring guide was originally fitted to is the same int dia as the delrin and original TX spring guides I have.
It is the Weihrauch spring from my local RFD that won't fit the Steel and AA Tx spring guides?
I could just leave it but I don't like the amount of preload this spring has just to make 10 ft Lbs seems odd.

[tinbum]

The spring in the gun (unknown make) that the steel spring guide was originally fitted to is the same int dia as the delrin and original TX spring guides I have.
It is the Weihrauch spring from my local RFD that won't fit the Steel and AA Tx spring guides?
I could just leave it but I don't like the amount of preload this spring has just to make 10 ft Lbs seems odd.

Yep, they used to be longer, softer springs. Extra preload means a softer shot cycle with less piston bounce which is why modern spring like the Titan seem so harsh to shoot. The original spring you now have should give a comfortable 11+fpe without being harsh, and a guide set will fit as long as you get the right one.

[Stormdancer]

OK thanks for that
I will get a new set of guides for the new spring.
Having just been made redundant I will have to wait until I secure new employment.
Perhaps you could PM me with the price of the required delrin guides.

Cheers John.

[tinbum]

OK thanks for that
I will get a new set of guides for the new spring.
Having just been made redundant I will have to wait until I secure new employment.
Perhaps you could PM me with the price of the required delrin guides.**

Cheers John.

** Other makes are available!