Recent Topics

Welcome to Theoben Rapid Forum. Please login or sign up.

Members
  • Total Members: 1,050
  • Latest: kro
Stats
  • Total Posts: 22,526
  • Total Topics: 3,235
  • Online today: 27
  • Online ever: 1,511 (July 25, 2026, 07:29:23 PM)
Users Online
  • Users: 0
  • Guests: 27
  • Total: 27

Twitter YouTube Facebook

Theoben Rapid Forum

Click above to make a donation. Thank you for supporting The Theoben Rapid Forum.

Dr Bob and RAW QF Installs

Started by Ca_Varminter, May 24, 2020, 01:41:11 AM

Previous topic - Next topic

Ca_Varminter

Hey Guys,
I decided to do a post on How I install the QF kits by Dr Bob and RAW.
This includes any mods I do!

First let's get started with Dr Bob's kit.
His QF kit has a stem that replaces the stock valve assembly, and a banjo fitting.
Then this assembly screws directly into the Rapid's FF or Reg Bottle adapter.


I used a tool I had made up to remove the stock Rapid valve. You can use the tool that Dr Bob
Includes in his kit.

Mine has a square hole so I can use my ½" breaker bar.

Next come installing of the QF stem into the bottle and slide the banjo fitting on.



Now come the sweaty palms... Drilling the Stock for the QF access.
I made a drilling jig, pattern after the one Swift made out of Aluminum... Mine is Delrin.
It has threaded hole to use the standard stock securing cap screw. Then I precisely measured
the locating hole for the guide pin where QF nipple access hole need to be.



So I would clamp my jig in my vise on my Mill. Next position the table so the guide pin
Easily slip into the hole in the jig. Then you screw the stock onto the jig.


To drill the access hole, I use a sharp 1 inch Forstner Bit.


Now come the technical part.. I machined and contoured a Delrin liner, cap and grip extension for the QF socket




Btw... I did plug the hole for the gauge, since I have a shroud, I don't use one.
No to bad for my first one.....

Now on to the RAW QF kit. It replaces your Reg adapter. It comes with a new reg/bottle adapter and banjo fitting with gauge and QF nipple.




This one I had to make a custom banjo fitting.
Since the stock one with the Gauge would not fit with my shroud.
So I had to fire up my little CNC mill and cut some 7071 aluminum.


Next, I chucked up the new banjo fitting in my lathe to contour and bore it.
Cut the internal O-ring grooves.
Then drill it to fit the QF nipple.





After looking at the Raw unit...I decided I didn't need a Reg.
So, I chucked up a spare Fast-flow into the old lathe and did some cutting.


So now I have a couple of options now......

Now comes the sweat palms...I need to drill my Custom Laminate DaveG Stock.
First I had to modify my QF Stock Drilling Jig.
I added a 2nd hole to match the new position of the QF nipple.


Now using the same 1 inch Forstner Bit, I drilled the hole through my stock.
Next I had to decide how I would dress up this hole.
Delrin just didn't look right. So I decided on brass.
Also what to do about a cover.....
This is what I came up with!
I Threaded the brass liner and made a threaded cover to match.




I use the same QF socket with the Delrin extension I made for the Dr Bob's QF to inflate my Rapid.

I hope you enjoyed this as much I did doing it!!

Atb,
Stuart





Mickyd

That looks a great job Stuart well done.I might look at getting my mk2 done. Md
Like Like x 1 View List

bob4026

Look fantastic them pal. Trying to work out whether to have this done to my Mk2... if i could guarantee it looks like yours, decision is easy.

atb

Bob
Like Like x 1 View List
2006 vintage Mk2 .177

KCE

I need your addy stuart so I can send mine onto you lol.
A cracking neat and tidy job.
Regards kev.
Like Like x 1 View List
Regards KCE
Admin.

KevG

fantastic work and info Stuart.looks bang on.
KevG
Like Like x 1 View List
Regards KevG.
Administrator

Brooksy

Beautiful work Stuart, I've seen this before on the old R7OC. I've always said, "if I had a lathe and a mill, I'd be in prison now" .
Like Like x 1 View List

nevadacowboy

Good stuff Stuart, if only I had the equipment and the skill.
Like Like x 1 View List
Bob
Once a Sapper always a Sapper

maxtich

#7
Fantastic work and extremely useful Stuart..but i also haven't the skills or tools to follow through!  :)
Like Like x 1 View List

The Robin

Superb workmanship, a pic tells a thousand words  8)
Like Like x 1 View List
BASC member

Remchester

Nice work! Can only dream of being able to do this sort of stuff I keep threatening to get a small hobby lathe to make little bits and bob on and seeing this sort of thing spurs me on to get on with it and see where it takes me
Like Like x 1 View List

Ca_Varminter

I have posted this before....
I wish I had the Machines and the ROOM that KevG has for his shop!!
I only have a small Man's Cave...
I use an Emco compact 5 Lathe and a small CNC Mill!




So I can't just hog metal out like the Big Boys...
So I take my time and make little cuts!!!

Stuart

Remchester

Nice is that a ruger 1022 receiver in the lathe? Getting tried up I assume?

Ca_Varminter

Yes... 80% 10/22 receiver...Take-down model...
I had drill and bore for barrel retention insert.
This is how it looks now...



Things to do during lock-down/isolation....

Stuart
Like Like x 1 View List

KevG

Quote from: Ca_Varminter on August 21, 2020, 03:23:21 PM
I have posted this before....
I wish I had the Machines and the ROOM that KevG has for his shop!!
I only have a small Man's Cave...
I use an Emco compact 5 Lathe and a small CNC Mill!




So I can't just hog metal out like the Big Boys...
So I take my time and make little cuts!!!

Stuart
its not the machine its the man behind it stuart.ime sure you have more skill than me.hats of to you sir.
KevG
Like Like x 1 View List
Regards KevG.
Administrator

Ca_Varminter

Hey KevG,

I am humbled by your Gracious Comments
:-[ :-[ :-[ :-[ :-[
I have always been impressed by your knowledge and skills make the Rapid Work Right!!
Yes, the results are mainly due to the skills of the guy running the machine....
But Having a Rabid Fox Watching over your Work Helps Too!!
;D ;D ;D ;D ;D ;D ;D

Thanks Again,
Stuart

This website is proudly hosted on Crocweb Cloud Website Hosting.

Crocweb Cloud Website Hosting

Welcome to the Theoben Rapid Forum

© 2026 Theoben Rapid Forum. All rights reserved.