The one barrel I have been shooting has the chamfer off center. Got my buddy redoing it. If I can get it back in the frame—-properly we’ll see if it was a problem.
Putting a little more power in a $15.00 Daisy
Very nice! I have your HP spring installed. Getting 310fps. Haven’t drilled the air tube. Apparently it’s worth doing. Drill to 1/8” ?
Drilling it to 1/8 is difficult to do, and if the air tube is made with tubing that has a visible seam, don't do it. Early on when we were still using shimmed '38B springs, I was able to drill a few of the 'seamless' air tubes to 3/32" and one or two to 7/64" and it definitely helped. The main problem I had was finding a long enough drill bit and then to not break it in the process. This is much better done using a lathe set up to drill with. A drill press could be used with careful alignment and holding everything securely while drilling. Drilling by hand is not something I'd recommend anyone else do, but if it was attempted, use plenty of lubricant, back the bit out often to clean swarf, go slowly and avoid overheating.
Thank you,,that's what I was hoping.the seal was detereated so it was hard to get a good measurement.as I remember as a kid,this was a hard hitting gun..but after 60 years we both have lost a little spring bb
Probably been addressed many times—-anyone lubricated the plunger cup/cylinder with anything other than the motor oil Daisy recommends?
Thinking of silicone and Ballistol. Used the silicone in the spring guns. Ballistol seems to work well in everything I’ve tried.
Back in the leather cup days maybe a petroleum Based oil was the only option. Thoughts.
Thinking of silicone and Ballistol. Used the silicone in the spring guns. Ballistol seems to work well in everything I’ve tried.
Back in the leather cup days maybe a petroleum Based oil was the only option. Thoughts.
Dave, I say use it and report your experience with that combination vs conventional oil. I quite certain that it won’t hurt anything. May be better. All I can say for certain that too much lubrication is as bad as too little.
Very interested to hear your experience with it. I’m certainly all about trying ideas out. Sometimes they really work!
hinz57
Very interested to hear your experience with it. I’m certainly all about trying ideas out. Sometimes they really work!
hinz57
All, here’s brief update on the $15 Daisy project. Got the LW shot tube installed! Results.10 rounds Daisy Match bbs.
Hi-552
Lo-545
Av-549
Es-7
Sd-2
Have no sights at this time. Planning a very solid Picatinny rail/scope. Then can shoot for accuracy, lots of ideas developing. Stay tuned!
Thx! I was hoping that the form I decided on wouldn’t bother people. I’m not really sure how the shape affects accuracy, as long as it is uniform and square to the axis. Main reason that I did it was for ease of loading a bb in! I tried loading with the muzzle faced off perpendicular to the tube axis. Kind of hard for my arthritic fingers to get the bb in the hole without it getting away!
Ease of loading was the first thing I thought of when I saw it. And to my eye it's also very pleasing aesthetically. As far as I know, as long as the crown is square and clean it'll perform as it should. Most crowns are configured to add some protection from dings and such, something your design does as well.
Mauser lover
Member
My goodness! That is beautiful!
Cvans
Member
- Joined
- Feb 21, 2019
- Messages
- 465
When putting this gun back together I did enlarge the transfer port in the abutment being careful not to alter the part that holds the magnet. The inlet to that hole was also chamfered. Alignment of the hole with the barrel remained good. The new seal lip was chamfered and a new abutment seal was installed. Unfortunately there was no increase in velocity. Coating the outside of the spring with open gear lube did tame down the spring twang during the shot cycle but may have also contributed to there being no increase in velocity. I like the smoother shot cycle.
Hinz has made some real progress and a lot will depend on how the accuracy test goes before I proceed much further.
After working on european and american airguns for years, working on this Daisy is a refreshing change.
Hinz has made some real progress and a lot will depend on how the accuracy test goes before I proceed much further.
After working on european and american airguns for years, working on this Daisy is a refreshing change.
Well dang...
30 rounds Daisy Match
Hi-537
Lo-518
Av-527
Es-19
Sd-4
Changed every variable all at once...
105B to 1998
Different abutment, same modifications, 4lb magnet
Diana spring cut to 7-7/32”, no angle corrected preload spacer
Will have to take it all apart and check everything. I didn’t like how tight the abutment went in. I need to make a steel preload spacer. Check the air chamber finish and seals. Everything....kind of starting over again....
Scope is too high. I have a solution. Endless work.
Really hated going from 552 to 537 hi #’s
More contemplation required!
30 rounds Daisy Match
Hi-537
Lo-518
Av-527
Es-19
Sd-4
Changed every variable all at once...
105B to 1998
Different abutment, same modifications, 4lb magnet
Diana spring cut to 7-7/32”, no angle corrected preload spacer
Will have to take it all apart and check everything. I didn’t like how tight the abutment went in. I need to make a steel preload spacer. Check the air chamber finish and seals. Everything....kind of starting over again....
Scope is too high. I have a solution. Endless work.
Really hated going from 552 to 537 hi #’s
More contemplation required!
Cvans
Member
- Joined
- Feb 21, 2019
- Messages
- 465
I was able to sneak out to the shop for about 45 minutes this evening. Big disappointment.
After hinz's success with a longer barrel I thought I'd give it a try.
Put a Crosman 2100 barrel in the lathe and threaded the end of it. It is a .177 barrel with rifling. Screwed it into the 499b and was off to the chony. What a disappointment. 342.8 fps. Ran 5 more shots all with match BB's and the results were very much the same. Then screwed the 449 barrel back in and the velocity went back up to 409 were it started out.
Four things I can see happening here. Because it is a soda straw barrel without adequate support the barrel is vibrating during the shot cycle causing the bb to rattle around as it travels down the barrel. Think tuning fork. Also the rifling could be causing problems. First because of drag and second air escaping around the BB through the rifling. Fourth the barrel bore is at least .002 larger. If all four things are happening this is never going to produce satisfactory result.
I have a couple of heavier Chinese barrels that I'm going to try next week.
This is kind of fun
After hinz's success with a longer barrel I thought I'd give it a try.
Put a Crosman 2100 barrel in the lathe and threaded the end of it. It is a .177 barrel with rifling. Screwed it into the 499b and was off to the chony. What a disappointment. 342.8 fps. Ran 5 more shots all with match BB's and the results were very much the same. Then screwed the 449 barrel back in and the velocity went back up to 409 were it started out.
Four things I can see happening here. Because it is a soda straw barrel without adequate support the barrel is vibrating during the shot cycle causing the bb to rattle around as it travels down the barrel. Think tuning fork. Also the rifling could be causing problems. First because of drag and second air escaping around the BB through the rifling. Fourth the barrel bore is at least .002 larger. If all four things are happening this is never going to produce satisfactory result.
I have a couple of heavier Chinese barrels that I'm going to try next week.
This is kind of fun
