I've seen a ton of LDC's on mods here and else where. There are a lot of guys making them, some plain some very nice.
Having never used an LDC before I was wondering how do they measure up to a fully shrouded barrel. A well made one should be quite effective for a co2 or pumper. They have those on some PCP guns and all you here is a slight "thump". Are LDC's that effective?
I'm curios because I'm going to get the wife, and possibly myself, a Crosman 2400Kt from the customs shop and I'd like to make some LDC for them...18 inch barrel.
May do another 1377 with the steel breech and forgo the expensive custom breeches. This one will just be a plink and play gun as will the wife's....my 2400 KT will be modded for pesting and 10 yard feeder squirrels.
I can't compare them to a shroud since I don't have one on an AG, but here's a good site for you: http://www.tko22.com/ (http://www.tko22.com/)
They work and quick shipping. :-*
IMO they both pretty much the same thing i think it matters what look you are looking for. The shroud covers the whole barrel and the LDC just sits on the end of the barrel.
Mike
I've got a bnm2240 with the shroud and a Clague ldc on my 137. Although they are both quiet the Clague ldc is quieter. Not the best comparison but that's all I have.
Also, it depends on what you do to them (inside). Ive had full shrouds that were horrible and small ldc's that were incredible.
If you want a full shroud and you are working with the 13xx or 22xx platform, you need to use a riser breech or high enough breech that will allow the shroud to fit just right against the main tube. Ldc's are an easy way to get the job done while using the regular breech. Plus they both have different looks.
airriflenut,an LDC from Mike at TKO would be perfect for your Custom Shop Gun,or 1377.They work very well on lower,to mid powered air guns.If you were to use something on a 30+ ft-lb PCP,then I would get something else.
Thanks for all of the info, much appreciated.
I think I'll order some aluminum and Delrin from onlinemetals and see what kind of LDC I can throw together for several builds I want to do.
You might want to search the Web for information about baffles and baffle design for 'effective' LDC's. I just buy them from guys who know what they are doing. Look forward to seeing whatever you come up with.
Chef's right....lots of info on the web :-*
Next time you're working on the sprinkler system you can make one of these...
The Goofer:
(http://i1249.photobucket.com/albums/hh508/WyoMan/doofer_zps9f64626e.jpg) (http://s1249.photobucket.com/user/WyoMan/media/doofer_zps9f64626e.jpg.html)
Make sure you use lots of glue like I did so you wont notice how bad it looks :D
works like the Clague's I have but dont tell Neil :-X
Hay Wyoman, that looks like my work. Always good to turn an idea into a project.
Wyo that is one crazy lookin' set-up!! :D. There's no telling just how many PVC rigs there are out there, quite a few I would imagine.
I've actually considered some sort of PVC back when I was thinking out my first (and only to date) mod. I was thinking about "coloring" the PVC, I saw how you can color the pipe with a dye mixed with PVC cleaner, it is a dye used for fuel or something along those lines...found the how-to a while back when I was searching for colored furniture PVC stuff.
Now you just had to go and get me in thinking mode again!! :D
there is a tutorial on the green forum that showed how to make a shroud/ldc out of pvc
i tried it and it works pretty good better than any tko,a.storey rig out there
you can also buy the tube(delrin) from mellonair and add your own internals since he doesnt make internals the end caps are removable.if you go the mellonair route it will be half the price of a tko or a.storey
in the end they are all effective until you reach the 12fpe
I've been looking at different types on the 'net in airgun and powder burner forums. Shrouds/LDC, etc designs are as varied as those that make them. I made the internals for my Crosmods shroud from Delrin rod...I tried many variations of baffle spacing distances and finally got what I was after....shhhhhh quiet.
I decided on this build I am going to go with 1 1/8"x.035" wall aluminum tube (3 feet for $14.29 at onlinemetals.com) and 1 1/8" aluminum round rod (2 feet at $10.66) for the barrel adapter, centering ring, baffles and end cap. I'm ordering extra since I may also get myself a CCS 2400KT or another 1377 to mod, that way I should have enough tube and rod for 2, possibly 3, LDC builds. Buy more at a time and save a few bucks, plus I need some stuff for my woodturning.
The baffle spacers will be various short pieces of the tube, split so they will slide down the main LDC tube. I'm going to do the centering ring and baffles with o-rings to keep things centered. For the 1377 "Scorpion" mod I did I drilled the pass-thru hole at .250", hindsight tells me to go smaller for .177 but not sure how much smaller yet.
I'm going to order the wife's CCS 2400KT 18"" .177 next month, the first mod will be the LDC of course. Then trigger, hammer/valve springs and such. She's already made it clear that the plastic shoulder stock MUST go, she saw an aluminum bar (maybe tube) with a wood cheek rest/butt pad on one of the custom Crosman pics I've saved...she doesn't want much, does she?!?!!! ;D
I'll post with pics of the progress as it gets built.
Definitely a cool project to take on!
hair curlers and thick felt are good things to have with two baffle washers ;)
ped
Quote from: ped on July 25, 2013, 12:01:07 AM
hair curlers and thick felt are good things to have with two baffle washers ;)
ped
Yep, I used this set up once and have been trying to top it ever since.......still working on it ;D
Rich
Quote from: ped on July 25, 2013, 12:01:07 AM
hair curlers and thick felt are good things to have with two baffle washers ;)
ped
I hear ya my friend, I hear ya. :-* ??? ???
This old Polock still has a few tricks up his sleeve....my 1377 "Scorpion"with heavy valve mods is 71 db at the muzzle. Of course this is using an Android app but it sho nuff is quiet!! :D
Reinforced rubber washers absorb shock waves....hmmm....maybe 1/4" I.D.... ???
Quote from: WyoMan on July 25, 2013, 04:38:35 AM
Reinforced rubber washers absorb shock waves....hmmm....maybe 1/4" I.D.... ???
Hmmmm, something else to ponder! I actually thought of polyurethane rubber rod (95a duro) put on my wood lathe, turned to fit the tube i.d., bore hole drilled and cut into baffle discs and use the sections of the split aluminum tube "scraps" as the spacers. Since you mentioned rubber reinforced washers there just might be some merit here. ;)
If went with the poly rubber rod they would have to either be thick enough to handle the air blast or cut them thin and use thin aluminum discs as backers for support.
Uh oh...jumpin' gee willakers, I just remembers I still have quite a bit of a buna-n/neoprene/vynil 3/8" sheet thick foam left over from some woodturning tools I made, don't remember the duro (around 60 I think). Cot some discs and use a punch cutter to make the bore hole, contact cement then to aluminum reinforcemen
t discs. I just might have to give that idea a try, heck I may even make some for my Crosmods shroud since it will give me a db sampling since I already know it's 71db ad it is.
Thank you Wyo, you gave me a start to some potentially awesome baffle.ideas!!! I so appreciate everyone's input on this...hand shakes all the way around!!