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Posts: 646
Joined: 10/16/2002 From: superior, AZ, USA Status: offline
The center pipe with the holes in it.Do you have a plug in the middle.Also,if you do,is the idea to get the exhaust to go out the first set of holes,then bypass the spacer and reenter the rear set of holes like a baffle system.What are the styrofoam spacers for and where do they go.
Posts: 1015
Joined: 10/24/2004 From: Altaville,
CA, USA Status: offline
Yes the plug makes the exhaust travel out then back in through the holes. The Foam just causes a gap between which silicone is squeesed into till full. Lots of holes in the center to hold the plug in place + one larger one to use as a fill hole for squeesing in the silicone. The foam burns off first flight leaving the baffle.
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I didn''t put the bullet in the fire and you quit talking about my mother! "Cosby, Shop Class, 1968 or so"
Posts: 732
Joined: 2/8/2002 From: ruston, LA, USA Status: offline
UPS just delivered my Coleman Rambler Stool. The aluminum legs are an exact fit for the flex header on the BME 115. Thanks for the tip on this stool. It only cost me $20 includint the shipping. This will make 4 mufflers and two prop sleeves. What a bargin.
Posts: 646
Joined: 10/16/2002 From: superior, AZ, USA Status: offline
Thanks altavillan.I was thinking about making mine so the larger[bottom end] is the intake,1" diameter in the center.Entered in about 2 inches.Then put a 1/2 inch exit pipe out the smaller end[top].I believe this would give it more of an expansion chamber with more back pressure.Do you think this would be more powerful,but a little noisier.Maybe better throttle response,or would it make the needles more sensitive.I have an article from M.A.N.,March 1994.It tells how to make a mousse can muffler power producing and its made like the way im going to make mine.So,i guess ill be the first to try maybe.Anyway,heres a pic of my roof rack[aluminum] from my conversion van.The OD is the same size as the ID of the headers i just bought here from rcu.3W.Im going to put them on my GT80.Nice brackets also,one is straight and the other is angled.My wife already asked me where the parts cam from and i told here they werent needed anymore and where just laying around now.[im getting rid of the van].
Posts: 1015
Joined: 10/24/2004 From: Altaville,
CA, USA Status: offline
I tried a set on the Kat with the 115 that had 1" outlets but it slobbered up the bottom of the plane so bad after just a couple flights, I real quickly put 1/2 inch stingers on. I think the stingers might help to produce some of the good tendencies these canns have. Mine do more power than the store bought cans they replaced. And very closely equal or excede the tuned mufflers I have also. And in both cases reduce weight significantly. But sheesh man, cutting up the van?
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I didn''t put the bullet in the fire and you quit talking about my mother! "Cosby, Shop Class, 1968 or so"
Posts: 646
Joined: 10/16/2002 From: superior, AZ, USA Status: offline
Thats good to know.Im going to do mine opposite from yours and put the neck part to the rear.This is what the article in MAN shows and all of there tests where really good and produced more power.Now these where for the fun fly glow engines.As to the van,its up for sale as it needs a new steering colum[ign system],and a couple other things.Basiclly selling the engine and trans.The last time i drove it i got 14MPG on the highway.And its even fuel injected.Heck,there might be other parts i could use.
Posts: 646
Joined: 10/16/2002 From: superior, AZ, USA Status: offline
Heres a few updates and pics.I found a nice tool for expanding the aluminum.It starts out at about 5/8,then its 3/4 for about 1 inch,then the flare ends up to 1 inch exact for the full length of the pipe.Didnt get it from my van but got it from my boys bicycle parts.[its the seat stem].Just cut off the lip of the bottle so it fit snug and after drilling out the bottom to 11/16ths and drove it through.You can see in the pic that the 1 inch tube is tite at both ends.The other pipe is one i made the way the M.A.N. article shows to build it.Says it has plenty of backpressure and because its tapered at the back it produces a decent wave.Its made out of a mousse can and the large end is JB welded in.The front pipe is in 1-2 inches and the back one is flush with the inside of bottle.The other piece is the seat stem.I plan on building mine the way altavillan did with the holes and plug with a turned down 1/2 inch stinger or whatever i can find thats smaller.The other set im going to make are going to be the tuned pipe with just a large inlet and a small outlet,itll look like the top mousecan one.
Posts: 142
Joined: 9/5/2004 From: canungra, AUSTRALIA Status: offline
Seriously could anyone buy a 6 Pack of bud drink the contents and post the empties back in the the holder to my friend in California ill pay all costs ?
< Message edited by sean sutherland -- 5/18/2008 11:40:42 AM >
Posts: 1015
Joined: 10/24/2004 From: Altaville,
CA, USA Status: offline
Most any small grocerie store or corner gas station/food mart can order the beer by the case. They come in 6 4 packs. They are still available in Ca. Bars also sell it I've heard. What I do is stop by the corner store when the Bud truck is making a delivery and place an order for a case. Where in Ca? does your friend live.
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I didn''t put the bullet in the fire and you quit talking about my mother! "Cosby, Shop Class, 1968 or so"
Posts: 732
Joined: 2/8/2002 From: ruston, LA, USA Status: offline
Vibration mounting the muffler.
I found something that I am going to try and see if it works on my mufflers. While shopping with my wife we went into a kitchen gadgets store. There I found bright blue silicone muffin baking pans. These were the miniature muffins size and the pans came two to a set with 6 muffin cups in each pan. The pans are good to 450 degrees. I should be able to cut out the muffin cups and mount them into a balsa or ply frame and pass the muffler exhaust leg through the support. It would be a very soft mount and allow for a lot of vibration with none being transferred to the frame. If there is any interest I will post a picture of what it looks like when I get it built.
Posts: 1015
Joined: 10/24/2004 From: Altaville,
CA, USA Status: offline
Sean, I'll be at the Red Bluff boat drags next Sunday. Have your bud PM me and I can drop off a carton of empties somewhere in the area. Thats a pack of 4. We always stop at a diner downtown in the morning before heading out to the river.
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I didn''t put the bullet in the fire and you quit talking about my mother! "Cosby, Shop Class, 1968 or so"
Posts: 732
Joined: 2/8/2002 From: ruston, LA, USA Status: offline
Vibration mounts from muffin pan.
I bought this at a kitchen gadgets store. They cost about $5 for two pans. They are very flexible and good to 450 degrees.
What I think will work is to cut out one muffin cup with the bordering silicone edge and mount this cup within a light plywood frame and cut a 1 inch round hole in the bottom of the cup to pass the exhaust pipe through it
Posts: 732
Joined: 2/8/2002 From: ruston, LA, USA Status: offline
High Temperature Copper Silicone. Does it make sense to use this to seal the aluminum tube going into and out of the can? It’s a tight fit anyway, would the exhaust just blow it out?
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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Gas Engines >> RE: Building and tuning, Bud Bottle Mufflers. 
RE: Building and tuning, Bud Bottle Mufflers. - 
