Canadian Airgun Forum

The #1 Community for Airguns in Canada!
It is currently Sat Dec 07, 2019 6:15 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  [ 16 posts ]  Go to page 1, 2  Next
Author Message
 Post subject: Crosman 2240 power mod?
PostPosted: Sat Nov 02, 2013 7:57 pm 
Offline

Joined: Sat Nov 02, 2013 7:47 pm
Posts: 2
Hello all,

I have a Crosman 2240 with a steel breach and a 10" barrel. I was thinking about adding a modified valve and a longer, stiffer hammer spring as seen here: http://www.amazon.com/Crosman-2240-2250 ... ve+crosman

I know that Crosman advertises the 2240 at 460 FPS, but we all know is does not actually shoot at that. Along with the 10" barrel, what gains would these particular mods add in velocity and would it put me over the 500 FPS?

Thanks all.


Top
 Profile  
 
PostPosted: Sat Nov 02, 2013 9:28 pm 
Offline
User avatar

Joined: Sat Sep 25, 2010 7:49 pm
Posts: 1248
Location: Southern Ontario
You may already be close to 500fps with the longer barrel unless you snipped a couple coils off your hammer spring...
I'd HIGHLY recommend you chrony your 2240 before you do any other mods to the valve, etc.

_________________
Air and springs and CO, too


Top
 Profile  
 
PostPosted: Sun Nov 03, 2013 5:54 pm 
Offline

Joined: Sat Nov 02, 2013 7:47 pm
Posts: 2
Thanks for the reply. Where does one take their airgun to get it chrony'd?


Top
 Profile  
 
PostPosted: Sun Nov 03, 2013 7:11 pm 
Offline
User avatar

Joined: Sun Jul 15, 2012 10:49 am
Posts: 6029
Location: Victoria, BC and Clarkston, WA
Alegut wrote:
Thanks for the reply. Where does one take their airgun to get it chrony'd?


You buy one, or find a friend on here willing to let you shoot on his range.

_________________
-Rick
Pardini K10
Brocock Concept .22
3 Custom Crosman 2260
Benjamin Discovery .22 w/Joe Hickey stock!
Crosman 150 pistol .22
4 Crosman MK 1 pistol .22
Mrodair CP-1M .22 and .177


Top
 Profile  
 
PostPosted: Sun Nov 03, 2013 7:34 pm 
Offline
User avatar

Joined: Sat Sep 25, 2010 7:49 pm
Posts: 1248
Location: Southern Ontario
You might add your location to your Forum profile. Maybe someone in your area could help out...

_________________
Air and springs and CO, too


Top
 Profile  
 
PostPosted: Mon Nov 04, 2013 12:32 pm 
Offline

Joined: Tue Oct 13, 2009 1:27 am
Posts: 2514
Location: Vancouver
The problem with using someone else's Chrony is that it seems quite a few people have a habit of shooting them. Once shot, it's probably smashed. So either a part replacement or complete replacement required. Finding someone willing to risk that can be difficult with so many reports of 'oops, I shot my Chrony' in the forums.


Top
 Profile  
 
PostPosted: Mon Nov 04, 2013 1:10 pm 
Offline
User avatar

Joined: Wed Jul 24, 2013 9:13 am
Posts: 4027
Location: Toronto
Like this..one subtle one devestated! Ouch.


Attachments:
chrono3.jpg
chrono3.jpg [ 38.13 KiB | Viewed 1588 times ]
shot_chrono.jpg
shot_chrono.jpg [ 160.64 KiB | Viewed 1588 times ]

_________________
Keep you powder dry and your seals oiled.
Shoot straight and safe.

http://plinkercases.ca/
Top
 Profile  
 
PostPosted: Mon Nov 04, 2013 1:19 pm 
Offline
User avatar

Joined: Mon Feb 11, 2013 12:46 am
Posts: 4173
lol...i don't get how someone can shoot there chrony, must have one hell of a bad shot :shock: , I wouldn't want to be around them period. :lol:

_________________
"A candle loses nothing by lighting another candle"

Image


Top
 Profile  
 
PostPosted: Mon Nov 04, 2013 1:30 pm 
Offline

Joined: Mon Jun 24, 2013 6:54 pm
Posts: 361
Location: Earth
Easy enough when you're maintaining standoff to avoid measuring muzzle blast and cannot use optic due to vertical standoff - that's how a gunshop owner killed his by not compensating.


Top
 Profile  
 
PostPosted: Mon Nov 04, 2013 1:41 pm 
Offline

Joined: Tue Oct 13, 2009 1:27 am
Posts: 2514
Location: Vancouver
Yeah, I had a near miss on my F1, clipping the far steel post about 5cm above the sensor on the left hand side a few weeks ago. I was using my new Brocock Atomic and was used to testing match type air pistols with just over 1cm between bore and sights, but with the Brocock I had a red dot in place a full inch over the bore. Enough difference to mess with my aim in terms of the Chrony position. The jolt slightly bent the steel rod holding up the light filter and snapped me to attention. So since then when I've been fussing with tuning the Atomic to get the flattest possible string of velocities I don't use the sights, rather I use instinctive aim at my putty trap. Shooting that way I'm thinking about the barrel location not the sights and my groups in the putty are all within 1", right in the middle of the Chrony triangle, a nice safe 15cm or so above the sensors. I can see how it'd be quite easy to shoot the thing, especially with a heavy firearm and a scope at close range. Easy to forget these sorts of things when you're thinking about muzzle velocity strings.


Top
 Profile  
 
PostPosted: Mon Nov 11, 2013 8:16 am 
Offline

Joined: Wed May 22, 2013 1:00 pm
Posts: 474
Plinkercases wrote:
Like this..one subtle one devestated! Ouch.


Or maybe the shooter on that first pic didn't like the numbers he was getting and said chrony that you son of a... chrony LOL


Top
 Profile  
 
PostPosted: Mon Nov 11, 2013 7:16 pm 
Offline
Supporting Member 2009
User avatar

Joined: Sun Dec 24, 2006 12:37 am
Posts: 3468
Location: Out There
Alegut wrote:
Hello all,

I was thinking about adding a modified valve and a longer, stiffer hammer spring as seen


Waste of your time and money. The 22xx valve was designed for 24" .22 barrel and outflows anything smaller/shorter- for every 5% in velocity you gain with a modified valve and/or spring you use 50% more Co2, and the improvement drops off quite quickly- a case of diminishing returns to say the least.

Stick to a longer barrel, then look at going the other way- using a velocity adjuster to turn down the Co2 flow for the same velocity- the 2240 is wasting Co2 at anything under a 24" .22 caliber barrel.

If you want the most power out of the platform- go to an 18" or 24" barrel and a velocity adjuster- but the valve is the absolute last thing to look at for power increases (despite the fact some people have made their own little niche markets out of "improved valves" over the years- it doesn't make the idea any more accurate). If you are serious about power output- then look at going HPA and using a completely different tube/valve setup.

_________________
www.scopesandammo.com/storefront



Please note: I do not conduct business through Private Messages (PM's) in online forums. Please do not send a 'PM" with a business-related question.


Top
 Profile  
 
PostPosted: Thu Nov 21, 2013 5:25 pm 
Offline
User avatar

Joined: Sat Sep 17, 2005 11:30 pm
Posts: 1897
Location: North Bay Ontario Canada
Alegut wrote:
Hello all,

I have a Crosman 2240 with a steel breach and a 10" barrel. I was thinking about adding a modified valve and a longer, stiffer hammer spring as seen here: http://www.amazon.com/Crosman-2240-2250 ... ve+crosman

I know that Crosman advertises the 2240 at 460 FPS, but we all know is does not actually shoot at that. Along with the 10" barrel, what gains would these particular mods add in velocity and would it put me over the 500 FPS?

Thanks all.


with just a 10 inch barrel your already getting close to 490 fps every 2240 i have put 10 inch barrels in averaged 480's to 490 a few at 493 you really gota be careful on the modding of pistols unless you live in the US then it dont matter what you do to it, also when you chrony you want to use a Crosman standard weight pellet 14.3 Grain , and yes buy a chrony you will get alot of use out of it, i was a fool when i sold mine and had to buy another one last year and i wont sell this one.

another consideration to look at my stock 2240 was shooting 418 Fps so i put in a 2289 hammer spring that was all i did and rechecked it and its now pushing 453 fps with everything else all stock , the steel breech does not add any speed and i do have one on mine and its still at 453 fps , so just that mod gained me 35 fps with just the change of the hammer spring..

i have seen alot of 2240s shoot 440 for 450 out of the box and a few at 460 and 1 ever only seen one at 466 fps thats over the 460 upto rating so its very important to know the guns speed before you mod .. a brand new chrony is about 100.00 and then a few bucks you can make a light kit for it or buy the proper light kit for it which is a reasonable price but well worth it, .

happy shooting


Top
 Profile  
 
PostPosted: Thu Nov 21, 2013 5:47 pm 
Offline
User avatar

Joined: Sun Sep 01, 2013 10:26 pm
Posts: 1564
Location: Hamilton
You don't have your location shown anywhere but if you are within distance of Hamilton I can bring my chrony over and check it

_________________
Weihrauch HW97KT .22 + Hawke Varmint 4-16x44 SF
Crosman357 .177
Crosman Phantom .22
Crosman 2240
Daisy 953
Ruger Green Mountain Laminate 10/22+Hawke Airmax 3-9x40 AO
1950 Russian SKS
Remington 783 30-06 Hawke Vantage 6-24x44 SF


Top
 Profile  
 
PostPosted: Thu Nov 21, 2013 5:49 pm 
Offline
User avatar

Joined: Sun Sep 01, 2013 10:26 pm
Posts: 1564
Location: Hamilton
Plinkercases wrote:
Like this..one subtle one devestated! Ouch.


I realize the non Master models have a need to see the screen on the front of the chrony but why doest someone make a thick steel plate to cover the front of the Master models??
Id buy one :)

_________________
Weihrauch HW97KT .22 + Hawke Varmint 4-16x44 SF
Crosman357 .177
Crosman Phantom .22
Crosman 2240
Daisy 953
Ruger Green Mountain Laminate 10/22+Hawke Airmax 3-9x40 AO
1950 Russian SKS
Remington 783 30-06 Hawke Vantage 6-24x44 SF


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 16 posts ]  Go to page 1, 2  Next

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