Theoben Rapid Forum

Theoben General Chat Area => Theoben Rapid Discussion => Topic started by: Gotone on November 29, 2025, 07:35:14 AM

Title: Rapid mkii
Post by: Gotone on November 29, 2025, 07:35:14 AM
Good morning, having just recently acquired a rapid mkii, it shot really nice, quite and produces some very tight pellet groups, I put it away for a few days, then took it out again to try , low grouping, took the bottle off
Nearly empty, bottle refilled then the tight groups returned, so decided to
Find the leak ,after first ringing Kev g ,we went through all the usual places that are likely to leak ,and Kev knew straight away that the gun had
The rarer regulator with the 7mm and 4mm x 1mm o rings on the core, anyway it was the reg leaking out of the small hole , having purchased the said o rings , out came the tool box 😆 ,and the best Chinese circling pliers ,I set about dismantling the reg ,i stripped it bare cleaned everything with brake cleaner, checked the core nose , gutted it's got a dimple in it , I replaced all the o rings , including the one under the pin disc,re assembled the reg , out came the reg tester, set the reg to 83 bar,no leaks 😄😄😄,but the reg started to creep 🤬🤬🤬😩,started to feel a bit deflated at the outcome , so I'm going to send it to Kev to sort 😄
Title: Re: Rapid mkii
Post by: Brooksy on November 29, 2025, 01:15:33 PM
He'll get it right for you.
Title: Re: Rapid mkii
Post by: Ca_Varminter on November 29, 2025, 05:23:50 PM
I know KevG can handle this little reg problem...
It sounds the the core nose seal...
On mine after inserting it, I face it flat on my lathe.
Then do a final polish on it!

Good Luck,
Stuart
Title: Re: Rapid mkii
Post by: Gotone on December 06, 2025, 06:33:39 AM
Well I re stripped the reg , and when I looked in side the reg body there was a scratch that was quite deep, so I just ordered a new reg from Kev , I've fitted it , and now I need to put a few pellets through it , shoots really nice at 11.4 ftlb , seems to be its sweet spot , happy days 👍👍
Title: Re: Rapid mkii
Post by: KevG on December 06, 2025, 07:09:03 PM
nice one m8
kevG