Hi my mk1fac 25cal rapid is running around 38 to 40ftlbs with a double spring set up that I'm not keen on really hard to cock and feel it's stressing the rifle
Is it possible with a different hi flo valve and some porting work done to stay around 40ftlbs but but run one spring set up , any ideas would be much appreciated ,
I am running a mk2 19inch barrel ppv valve .22 at 46ftp with a standard spring
double spring set up is shite.better with a good quality single spring.avoid Ebay springs.
KevG
The short answer is yes and it may not be necessary to modify the block porting.
Quote from: KevG on October 20, 2022, 07:56:27 AM
double spring set up is shite.better with a good quality single spring.avoid Ebay springs.
KevG
what's the best spings to get?
Would one of your valves help ?
Quote from: Therapidman on October 20, 2022, 07:48:05 AM
I am running a mk2 19inch barrel ppv valve .22 at 46ftp with a standard spring
mk1 25cal from what I've seen 40ftp is about max , at the time I couldn't afford a mk2 shame as I think 45ftp ish would be perfect hunting tool don't get my wrong 40ftp is bloody nice after sub 12 rifles rabbits out to 80yards just amazing , I want to service the rifle and maybe get some upgrades done at the same time got it all in bits now so good time .
Quote from: Eddie on October 20, 2022, 10:02:07 AM
Quote from: Therapidman on October 20, 2022, 07:48:05 AM
I am running a mk2 19inch barrel ppv valve .22 at 46ftp with a standard spring
mk1 25cal from what I've seen 40ftp is about max , at the time I couldn't afford a mk2 shame as I think 45ftp ish would be perfect hunting tool don't get my wrong 40ftp is bloody nice after sub 12 rifles rabbits out to 80yards just amazing , I want to service the rifle and maybe get some upgrades done at the same time got it all in bits now so good time .
plus 10-15% on existing ports.
Quote from: Squinty on October 20, 2022, 10:16:14 AM
Quote from: Eddie on October 20, 2022, 10:02:07 AM
Quote from: Therapidman on October 20, 2022, 07:48:05 AM
I am running a mk2 19inch barrel ppv valve .22 at 46ftp with a standard spring who makes those ?
mk1 25cal from what I've seen 40ftp is about max , at the time I couldn't afford a mk2 shame as I think 45ftp ish would be perfect hunting tool don't get my wrong 40ftp is bloody nice after sub 12 rifles rabbits out to 80yards just amazing , I want to service the rifle and maybe get some upgrades done at the same time got it all in bits now so good time .
plus 10-15% on existing ports.
The steel one is a Bucketboy valve, I made a new stem/top-hat for that...accidental double load 42gr @ 54fpe..stalled the valve and put the faintest bend in the stem
They're a straight swap for 35-37fpe+ in .22.
A version is available on e-bay..... that appeared shortly after Pete put the drawing on t'other Rapid forum.
Haven't tried one there are those who will say its not a Bb valve but it does the job.
I'll be honest..the ebay sellers regs are a bit hit and miss which had put me off.
The PEEK valve is one I made, have a couple in sub-12s but I still run one of Kevs in my MK2 Air-Miser 500+ shots in 177 8)
Steve & Johnny at HW100 Tuning have made the 'PurePeekValve', as above..all PEEK short-body & top-hat.
They've been developing it for a while. reports on FAC gains have been good.
I was sent a tester from their first run before I got my lathe.
Athough I can make my own .. I haven't felt the need take it out and put my own in..
My regged FAC R7 is zipping out JSB Express @ 30ft on a sub-12 spring with that.
Anything is possible with a rapid....
I run my Titanium Rapid @ 70 fpe!
The valve is a custom stainless valve-body with a tapered titanium valve
The stem is precision tuned and polished with no O-ring groove
The valve-body tail and sealing face are Delrin lined.
(https://photos.imageevent.com/scl_electronics/gun/ultimaterapid/websize/valve2.jpg)
The Short body design helps with flow and consistency.
Good luck,
Stuart
Would love to try one of those on my Raw Stuart
;D ;D ;D 8) 8) 8) ;) ;) ;)
Quote from: Ca_Varminter on October 20, 2022, 02:42:38 PM
Anything is possible with a rapid....
I run my Titanium Rapid @ 70 fpe!
The valve is a custom stainless valve-body with a tapered titanium valve
The stem is precision tuned and polished with no O-ring groove
The valve-body tail and sealing face are Delrin lined.
(https://photos.imageevent.com/scl_electronics/gun/ultimaterapid/websize/valve2.jpg)
The Short body design helps with flow and consistency.
Good luck,
Stuart
Do you sell these valves?
you can get some gains with a valve extension chamber
kevG
I would still like to get a little more oomph out of my RAW currently 50 ftlb with 25.4 grain slugs
Very similar valve to yours Kev I'm getting around 950 fps but would like to be over 1000 then turn down if I want to