Theoben Rapid Forum

Everything Technical About Rapid => Technical => Topic started by: KevG on June 05, 2020, 09:55:04 PM

Title: Valve chamber extension and stem stand off
Post by: KevG on June 05, 2020, 09:55:04 PM
For the longer blocks
KevG
Title: Re: Valve chamber extension and stem stand off
Post by: Ca_Varminter on June 05, 2020, 10:07:26 PM
Those look amazing...Great Finish..Stainless?

Stuart
Title: Re: Valve chamber extension and stem stand off
Post by: KevG on June 05, 2020, 10:32:19 PM
Cheers stuart m8.yes I like doing things in stainless.
KevG
Title: Re: Valve chamber extension and stem stand off
Post by: KCE on June 05, 2020, 10:35:26 PM
Are those what I saw today kevG.
The same as you fitted on mine which I have noticed a vast improvement in the past few weeks.
When I look at it on the rapid it is as though it was part of the gun when it came from the factory it really does blend in with the action.
Regards Kev.
Title: Re: Valve chamber extension and stem stand off
Post by: AustenW on June 05, 2020, 10:44:58 PM
Looks great Kev, I bet the customer will be pleased with that  ;)
Title: Re: Valve chamber extension and stem stand off
Post by: KevG on June 05, 2020, 11:39:50 PM
hope so m8.could not leave it while tomorrow.so finished it tonight,just the carbon tube to fit now.
KevG
Title: Re: Valve chamber extension and stem stand off
Post by: KevG on June 06, 2020, 12:01:19 AM
Quote from: KCE on June 05, 2020, 10:35:26 PM
Are those what I saw today kevG.
The same as you fitted on mine which I have noticed a vast improvement in the past few weeks.
When I look at it on the rapid it is as though it was part of the gun when it came from the factory it really does blend in with the action.
Regards Kev.
yes kev m8,but made the stand of after you went,was going to do it tomorrow but once i get started i carnt stop.
KevG
Title: Re: Valve chamber extension and stem stand off
Post by: Daztilley on June 06, 2020, 12:15:16 AM
Looks great kev 👍
That will add loads of air capacity to the valve chamber 👍👍👍
Title: Re: Valve chamber extension and stem stand off
Post by: KevG on June 06, 2020, 12:19:56 AM
got something similar in my little .20 cal daz and its realy upt the shot count.
KevG
Title: Re: Valve chamber extension and stem stand off
Post by: Daztilley on June 06, 2020, 12:49:05 AM
I remember seeing a pre chamber fitted to the bottom of the block too - have put pics below.....
With MFR s being fitted with a shrouded barrel there isnt space to fit a chamber below the barrel - looks a tidy piece of work too 👍
Title: Re: Valve chamber extension and stem stand off
Post by: Ca_Varminter on June 06, 2020, 01:50:40 AM
OMG...
That just reminded me another pre-chamber connected through the bottom of the receiver.
Swift on AirguAdvice...His .50 cal Big bore Rapid project....
I don't have any photos

Stuart
Title: Re: Valve chamber extension and stem stand off
Post by: Daztilley on June 06, 2020, 05:26:59 AM
That sounds interesting Stuart! Never seen a  50 cal rapid either 😲
Title: Re: Valve chamber extension and stem stand off
Post by: GordonM on June 06, 2020, 08:46:43 PM
Quote from: KevG on June 05, 2020, 09:55:04 PM
For the longer blocks
KevG

Hi Kev, whats a HEIC file and what will it open with


G
Title: Re: Valve chamber extension and stem stand off
Post by: Ca_Varminter on June 06, 2020, 10:22:17 PM
apple device
Title: Re: Valve chamber extension and stem stand off
Post by: Ca_Varminter on June 07, 2020, 01:36:22 AM
Hey KevG...
Do You Send to the States???
:o :o :o :o :o :o :o :o :o ::) ::) ::) ::) ::) ::) ::)

Stuart
Title: Re: Valve chamber extension and stem stand off
Post by: KevG on June 07, 2020, 08:39:07 PM
Depends if your m8 Donald Trump says it's ok.😁
Yes I have done in the past stuart m8
KevG
Title: Re: Valve chamber extension and stem stand off
Post by: Ca_Varminter on June 07, 2020, 11:37:34 PM
Quote from: KevG on June 07, 2020, 08:39:07 PM
Depends if your m8 Donald Trump says it's ok.😁
Yes I have done in the past stuart m8
KevG
He Is No M*8 of mine...
I was hoping he would stay on your side of the Pond With Boris!!!
:P :P :P :P :P :P :P
Thanks,
Stuart
Title: Re: Valve chamber extension and stem stand off
Post by: Lanky94 on July 13, 2020, 05:05:17 PM
Quote from: KevG on June 06, 2020, 12:19:56 AM
got something similar in my little .20 cal daz and its realy upt the shot count.
KevG

What spec stainless did you use Kev? What wall thickness if it also please?
Title: Re: Valve chamber extension and stem stand off
Post by: KevG on July 13, 2020, 07:03:33 PM
316 stainless 2.9mm wall on main chamber and 2.3mm wall were thread relief is.
kevG
Title: Re: Valve chamber extension and stem stand off
Post by: Lanky94 on July 13, 2020, 08:21:53 PM
Thanks Kev. Have you made any from titanium? I would imagine weight penalty for stainless compared to titanium is negligible for such a small amount of material used?

Do you cut the thread using lathe, or use a die?
Title: Re: Valve chamber extension and stem stand off
Post by: KevG on July 13, 2020, 08:58:26 PM
do it on lathe.stainless would be tough to do with die..sooner do them out of stainless.i guess they could be done in brass but always think it looks a bit naff and cheap.
KevG
Title: Re: Valve chamber extension and stem stand off
Post by: Brooksy on July 14, 2020, 07:26:51 AM
I thought you Yorkshire men loved brass! But only if it stays in your pocket I suppose!  ;)
Title: Re: Valve chamber extension and stem stand off
Post by: Kernal on July 14, 2020, 08:15:36 AM
Quote from: Brooksy on July 14, 2020, 07:26:51 AM
I thought you Yorkshire men loved brass! But only if it stays in your pocket I suppose!  ;)

;D ;D ;D ;D ;D ;D nice,

(https://media.giphy.com/media/l3HBbltOYjoNq/giphy.gif)
Title: Re: Valve chamber extension and stem stand off
Post by: jackrooz on May 22, 2022, 09:54:35 AM
I wonder if you could make up something like this for me ..

would need to go between the regged raw quick fill as in the picture..


have no idea on cc capacity I'd imagine 2cc