Kiwi Airgunners Homepage
Forum Home Forum Home > Technical > Pauly's Technical Area
  New Posts New Posts RSS Feed - Crosman hollow probe build
  FAQ FAQ  Forum Search   Register Register  Login Login

Crosman hollow probe build
 Post Reply Post Reply Page  <1234 5>
Author
Message
  Topic Search Topic Search  Topic Options Topic Options
kruzaroad View Drop Down
Senior Member
Senior Member
Avatar

Joined: 02 Jul 2022
Location: Hastings 4 now
Status: Offline
Posts: 2282 		Post Options Post Options   Thanks (0) Thanks(0)   Quote kruzaroad Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 2023 at 9:32am
He put a pic of his lathe up on the site here
http://www.kiwiairgunners.co.nz/forum_posts.asp?TID=721
Back to Top
Pauly5 View Drop Down
Forum Moderator
Forum Moderator
Avatar

Joined: 10 Mar 2013
Location: Titahi Bay
Status: Offline
Posts: 1409 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Pauly5 Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 2023 at 10:52am
I finished drilling and fitting a bolt to the probe last night. The bolt is one I had started ages ago, and is probably too big to most peoples liking, but the good thing is that they are interchangable, so as I develop a good method of making the bolts, I will replace it later.

Probe fits and slides well in the breech, but the pellet can catch on that annoying screw hole in the bottom, so I am thinking of turning up small delrin plugs to fit in there, and see if that works. 

Anyway here's a couple more photos.
Back to Top
kruzaroad View Drop Down
Senior Member
Senior Member
Avatar

Joined: 02 Jul 2022
Location: Hastings 4 now
Status: Offline
Posts: 2282 		Post Options Post Options   Thanks (0) Thanks(0)   Quote kruzaroad Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 2023 at 11:14am
That looks good. I prefure a larger bolt handle personally, makes for easier working of bolt when your watching that starling moving around in the tree. Then you only have to take eyes off it to put pellet in.
Those little plugs are a good idea to block that screw hole.
Are you going to reem/polish the inside of the hollow probe to smooth air flow through it? It may just be the photos make them look worse than they are but it looked pretty rough on the inside.
Back to Top
Pauly5 View Drop Down
Forum Moderator
Forum Moderator
Avatar

Joined: 10 Mar 2013
Location: Titahi Bay
Status: Offline
Posts: 1409 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Pauly5 Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 2023 at 11:31am
I drilled it, then followed through with an end mill bit to flatten the bottom of the hole. I will probably try sandpaper on a dowel, but it's the light that makes it look worse than what it is.

I don't have any reaming tools.
Back to Top
kruzaroad View Drop Down
Senior Member
Senior Member
Avatar

Joined: 02 Jul 2022
Location: Hastings 4 now
Status: Offline
Posts: 2282 		Post Options Post Options   Thanks (0) Thanks(0)   Quote kruzaroad Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 2023 at 11:36am
I found also that when taking close ups up it tends to make every little channel or groove look like a valley.
Hence why I was a dubious about if it was just photo or actual finish.
Back to Top
Billbobnz View Drop Down
Senior Member
Senior Member
Avatar

Joined: 13 Jun 2020
Location: Ashburton
Status: Offline
Posts: 867 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Billbobnz Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 2023 at 8:50pm
Mate they are making me want to get a lathe.....

Hopefully getting one at work soon. So hopefully will finish a few projects around here.

Back to Top
RangerPete View Drop Down
Senior Member
Senior Member
Avatar

Joined: 18 Apr 2023
Location: Cambridge.
Status: Offline
Posts: 884 		Post Options Post Options   Thanks (0) Thanks(0)   Quote RangerPete Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 2023 at 9:37pm
Hi Paul,
I don’t know much about pellets and probes, but would the beveled edge of the probe help in “reshaping” a damaged skirt as it seats it into the barrel?
I’ve often wondered if shaping a pellet probe exactly as you have done would be able to gently “re-round” a bent skirt helping it to seal better, be more accurate etc etc…
Walk quietly, but carry a big stick.
Back to Top
kruzaroad View Drop Down
Senior Member
Senior Member
Avatar

Joined: 02 Jul 2022
Location: Hastings 4 now
Status: Offline
Posts: 2282 		Post Options Post Options   Thanks (0) Thanks(0)   Quote kruzaroad Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 2023 at 9:55pm
Fear not billbob you can always use a drill and a file.
You'll have ball if you get one at work,and you got the old fella up the road to give you some seriously good tips and tricks.
Back to Top
Pauly5 View Drop Down
Forum Moderator
Forum Moderator
Avatar

Joined: 10 Mar 2013
Location: Titahi Bay
Status: Offline
Posts: 1409 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Pauly5 Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 2023 at 10:42pm
Pete, that was the thinking behind that, in the hope it would help do that and seat the pellet skirt onto the rifling.

Edited by Pauly5 - 11 May 2023 at 10:44pm
Back to Top
Pauly5 View Drop Down
Forum Moderator
Forum Moderator
Avatar

Joined: 10 Mar 2013
Location: Titahi Bay
Status: Offline
Posts: 1409 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Pauly5 Quote  Post ReplyReply Direct Link To This Post Posted: 11 May 2023 at 10:44pm
Originally posted by Billbobnz Billbobnz wrote:

Mate they are making me want to get a lathe.....

Hopefully getting one at work soon. So hopefully will finish a few projects around here.


That is exciting. 
Back to Top
 Post Reply Post Reply Page  <1234 5>
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 10.14
Copyright ©2001-2012 Web Wiz Ltd.

This page was generated in 0.063 seconds.