Deltaboy1984
Member
Very Interesting!
I've mentioned Geo and the LDCs he makes but never shown them. So here is some of his work:
Front view of deluxe 880 LDC
View attachment 830986
CARBON FIBER
View attachment 830987
880 with front sight LDC
View attachment 830988
880 LDC with front sight
View attachment 830989
I just heard from Geo at Gateway to Airguns forum. He's built and just tested a Daisy 880 that uses a single 499 shot tube. He shortened the barrel shroud on it and plans are being laid for a LDC for it. His indoor accuracy is shown below; the group measures 0.217" c/c, was shot at 8 yards with 3 pumps. Outdoors he's fighting windy conditions but still managed to do 0.75" at 10 yards with 5 pumps. He reports that 5 pumps "will reliably penetrate both sides of a metal paint can at 10 yards", so it's got some power!
View attachment 830772
View attachment 830771
Geo does 3-D printing and sells a killer LDC for the 880 for a very reasonable price, give him a message if you're interested.
3-14-19
Latest update from Geo on his 880/499 single tube hybrid:
"I reinstalled the unmodified 499 barrel and topped it off with a Field Sport red dot to do some more outside testing in between wind gusts.
View attachment 831168
"With 4 pumps, averaging 477 fps, it shoots 1" groups offhand out to 10 yards with no hopup. This power level and distance will put a BB through one side of a metal paint can and leave a good dent on the other side. At 25 to 30 yards, you can shoot soda cans till the sun goes down. In its current form, it is like the BB gun I dreamed of having as a boy. Out to 10 yards, I wouldn't hesitate to shoot invasive birds, rabbits, etc.
"I wonder if a LDC will further improve accuracy, especially at higher powers.
"Looking forward to getting the proper tubing so I can hopup one of these smooth barrels. Pulling the hopup design off is going to be a good challenge. There isn't much room in there to work with, but I think there is just enough and still leave room for BBs."
No doubt!I doubt anyone here will discount redneck engineering as a way to reach a goal.lol In fact, that's how this thread began: cheap BB gun, hack saw a preload spacer and use a hand drill to bore out the air tube, and the rest is history, as they say. So go for it!!
I’m very interested as well. This topic is making think about pulling out my airsoft “rifle” and do a bit of work really figuring out how it works. It certainly has range, power, and accuracy.In reference to “Geo”s comment on hopup. Like to hear more as he works on this mod. I really think spinning the bb will be the answer for anyone looking for range and accuracy using a smooth bore BB gun. The airsoft people has proven this technology and uses it in all their better equipment.
I’m in the process of experimenting with the old screw in shot tubes in old Daisy’s
I’m “redneck” tech, using rat tails files, pencil erasers and epoxy to form the device. Should be ready to launch next week.
bb nels, thank you for making it back to our thread- my first gun was a 102 and I've also owned an 1105 and 499b so we have that in common already! Please don't hesitate to ask if you have any questions about your hotrodding.Hello all. First post here. Just a thanks to cobault and every one else.with your help have gotten 3guns working! a1105,,102,,and a 499b.looking to do some hot rodding in future. I started this thread 3 years ago,can't believe it was still here! my posts will be short and poorly written,as I am on a tablet that really ticks me off. good shooting all........BB
Welcome!Hello all. First post here. Just a thanks to cobault and every one else.with your help have gotten 3guns working! a1105,,102,,and a 499b.looking to do some hot rodding in future. I started this thread 3 years ago,can't believe it was still here! my posts will be short and poorly written,as I am on a tablet that really ticks me off. good shooting all........BB
The new production model 25 uses a shorter spring with less rate than even the stock RR, so my spring will be too much for it. I never tried it, but a shortened RR spring might work in the new style 25 though. The older 25s use a stronger and longer spring, and a RR spring might work in one of them- but whether an increase in MV would result, and how much the increase would be, if any, I don't know. A HP spring may be too much but if I had the specs of the stock spring I could say for sure if the HP spring would be a good replacement.Colbalt, are the RR and the mod 25 springs interchangeable? Put one of your HP springs in a 102. A worn out 102. Got another 50 FPS. Like to put one in my 25.
I know how important the crown is on a “firearm” and would assume the same on any “gun”.
Choking the tube would be good, some high $$ pellet guns use it. Finding the tooling would be the issue.
Back in my “working” life, I used hard chrome a couple times to solve manufacturing problems. Thinking of chrome in the bore. Tighten the last 6” or so, just ahead of the air tube. I would think any chrome shop could pull this off. Got any old car rebuilders with us ? They’d know some shops.
Be the easy way to reduce “slop” in the bore. Thoughts/comments ?
Daisy stockmaker par excellence Shane has messaged me about an electroless nickel plating kit from Caswell, possibly one that is within reach of the home hobbyist. Nickel won't be as durable as hard chrome but still may be durable enough, and could be reapplied as needed. I'll look into it and report back. If anyone is acquainted with this, feel free to chime in!That's a very interesting concept that need to be looked into further. I don't know of a place offhand but there are bound to be one that would entertain the idea. Many such shops work on a per lot basis, I don't know if any will do just a tube or three but like I said, needs to be looked into and thanks for bringing the idea up!.
FWIW, Walther airgun chokes are done right at the muzzle so the last thing the projectile 'sees' is the choke before leaving the tube.