Canadian Airgun Forum

The #1 Community for Airguns in Canada!
It is currently Sun Nov 17, 2019 7:11 am

All times are UTC - 5 hours


The Canadian Airgun Forums are a place for people to discuss and learn about airguns and the airgunning sport in Canada. There are lots of discussions about airguns, airgun accessories, reviews, modification and repair information, airgun events, field target and free classifieds!

 

You need to register before you can post: click the register link to proceed. Before you register, please read the forum rules. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload your own pictures, and access many other special features. Registration is fast, simple, and absolutely free! To start viewing messages, select the forum that you want to visit from the selection below.








Post new topic Reply to topic  [ 6 posts ] 
Author Message
 Post subject: H9-A (HB-22)
PostPosted: Wed Feb 01, 2017 2:48 am 
Offline
User avatar

Joined: Wed Oct 17, 2007 3:27 am
Posts: 2586
Location: Winnipeg, Canada
Dusted off my ten year old HB-22.
After plugging the apparent bleed vent hole, and lightening the stem return spring, I'm still "only" seeing mid 38O's for 8 pumps with the 14 gr. Meisters.

I like the design of this pistol- it's compact compared to the 13-XX line. I would really like to see mid 45O's out of it.

Hammer stroke is very short- just wondering if shortening the valve stem would get velocity up a little more...

Due to the gun's soldered brass construction, there really isn't a lot of mod options. It's not retaining air at all- I suspect port sizes are "normal" for a 22...

-D.S.

_________________
"Ain't no half-way"
-S.R.V.


Top
 Profile  
 
 Post subject: Re: H9-A (HB-22)
PostPosted: Wed Feb 01, 2017 6:29 pm 
Offline

Joined: Thu May 07, 2015 8:30 pm
Posts: 1184
Location: Eastern Townships
Doc Sharptail wrote:
Dusted off my ten year old HB-22.
After plugging the apparent bleed vent hole, and lightening the stem return spring, I'm still "only" seeing mid 38O's for 8 pumps with the 14 gr. Meisters.

I like the design of this pistol- it's compact compared to the 13-XX line. I would really like to see mid 45O's out of it.

Hammer stroke is very short- just wondering if shortening the valve stem would get velocity up a little more...

Due to the gun's soldered brass construction, there really isn't a lot of mod options. It's not retaining air at all- I suspect port sizes are "normal" for a 22...

-D.S.


This ^^^, and could you ''stuff'' the valve a bit to get more pressure? It works rather well on 13xx gun, however I don't know your gun :?: :?: :?:


Top
 Profile  
 
 Post subject: Re: H9-A (HB-22)
PostPosted: Wed Feb 01, 2017 10:33 pm 
Offline
User avatar

Joined: Wed Oct 17, 2007 3:27 am
Posts: 2586
Location: Winnipeg, Canada
Valid point there, Airmec! In fact, that's far more reversible than messing around with stem length..
Valve volume is actually a bit greater than the13-XX series, and may be the solution I am after. Pump tube Dia. Is closer to 22-XX than 13-XX, now that I come to think of it...


I'll get a try with some bushings I had saved expressly for this purpose.
-D.S.

_________________
"Ain't no half-way"
-S.R.V.


Top
 Profile  
 
 Post subject: Re: H9-A (HB-22)
PostPosted: Thu Feb 02, 2017 5:59 pm 
Offline

Joined: Thu May 07, 2015 8:30 pm
Posts: 1184
Location: Eastern Townships
Hey Doc, according to what I saw on your pistol's EVP, the valve seems to be a removable, cartridge, pointed-nose type (in brass I guess). If the diagram is reliable, I believe it could be flat-topped, which could also help, as I'm sure you know :wink:

https://support.crosman.com/hc/en-us/ar ... 1-Present-


Top
 Profile  
 
 Post subject: Re: H9-A (HB-22)
PostPosted: Thu Feb 02, 2017 10:38 pm 
Offline
User avatar

Joined: Wed Oct 17, 2007 3:27 am
Posts: 2586
Location: Winnipeg, Canada
I can sure identify with your tag line.

Yes, you are right about the valve being a cartridge type. There is no transfer port- air flows around the valve body. It is sealed with o rings on both ends. Seal on hammer end is a skimpy little thing...

With a volume reduction of 33% in the valve, I lost 40 fps at 8 pumps, but gained a second shot at 191 fps. :rolleyes:

I took the chain link roller out, and returned the pistol to factory configuration....

Until I can come up with new ideas. In a bit of a quandary right now. The pistol is accurate, and the sights are almost readily visible to these geezer eyes. I'd like to end up with it in a shoulder rig for splorking close range ruffled and sharptailed grouse while l'm on stand for deer...

-D.S.

_________________
"Ain't no half-way"
-S.R.V.


Top
 Profile  
 
 Post subject: Re: H9-A (HB-22)
PostPosted: Sat Feb 04, 2017 12:43 pm 
Offline
User avatar

Joined: Wed Oct 17, 2007 3:27 am
Posts: 2586
Location: Winnipeg, Canada
Tried last night to get that valve into a 22-XX tube, and it's even too big for that by .003. Hmm...


-D.S.

_________________
"Ain't no half-way"
-S.R.V.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 6 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
News News Site map Site map SitemapIndex SitemapIndex RSS Feed RSS Feed Channel list Channel list

Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group

phpBB SEO