Chainsaw Repair

How To Basics - Carb Fixes + Mods - IPL and Service Manuals => How To Basics and Fixes => Topic started by: KilliansRedLeo on December 21, 2013, 04:45:28 pm


Title: Muffler Mods Using Silver Solder
Post by: KilliansRedLeo on December 21, 2013, 04:45:28 pm
OK, guys what tools are you using to do this? I have a MAPP gas torch setup that I use to do plumbing and am wondering if that will suffice as a heat source. Also would like to know how heavy roll solder or stick you use. Any other tips or techniques you would recommend.

Thinking of going this route instead of brazing or MIG/TIG because I have limited space and need a small very portable setup.
Title: Re: Muffler Mods Using Silver Solder
Post by: alsled on December 21, 2013, 07:33:41 pm
http://www.youtube.com/watch?v=T2wYgQtPg4g
Title: Re: Muffler Mods Using Silver Solder
Post by: KilliansRedLeo on December 21, 2013, 07:48:42 pm
Alan, that stuff (SSF-6) seems to work great! Where do you get it?
Title: Re: Muffler Mods Using Silver Solder
Post by: alsled on December 21, 2013, 08:10:44 pm
I don't know, I never used silver solder in my life, just did some searching and found that stuff.  Seems like it is pretty good, I don't like the lack of control of the puddle, same goes for brazing, but in your limited space and heat source, if it was me, I'd be looking into the product.

They make little 120 volt migs that don't need gas you know.
Title: Re: Muffler Mods Using Silver Solder
Post by: alsled on December 21, 2013, 08:25:38 pm
If I was in your shoes and wanting to learn a new,, lets say, how the F... do I fix this.  Stop out at a local welding center, prax air or rogers or who ever is around your area, bring a muffler and show them what you want to do.

I found this site just for the same reason, How the F??? do I fix this.

3000FPS may be a good lead, I'm just a backyard welder, not a pro.
Title: Re: Muffler Mods Using Silver Solder
Post by: alsled on December 21, 2013, 08:27:35 pm
http://www.searsoutlet.com/Wire-Feed-Welder-Gasless/d/product_details.jsp?pid=14551&mode=seeAll
Title: Re: Muffler Mods Using Silver Solder
Post by: KilliansRedLeo on December 21, 2013, 08:35:49 pm
Thanks Alan! Perhaps 3000fps will jump in and give me some advice. I have found where I can get SSF-6 online but there must be a better price somewhere. The stuff is pretty expensive! They do show a video of somebody soldering a Damascus shotgun barrel so perhaps I will speak to my gunsmith.
Title: Re: Muffler Mods Using Silver Solder
Post by: 660magnum on December 21, 2013, 08:41:40 pm
I've done several muffler outlet mods with regular brass rod and brazing flux using a ox-acetylene torch. Some of those were done more than 20 yrs ago and are still around and have not ****. I also used the silver solder with the same torch but that was on air conditioning copper lines
Title: Re: Muffler Mods Using Silver Solder
Post by: alsled on December 21, 2013, 09:08:37 pm
660, Oxy act is a great heat source, but takes up room, I know what Tim is after as far as space saving, was wondering as its very portable in a 120 wireless if this could be the answer.
Title: Re: Muffler Mods Using Silver Solder
Post by: 660magnum on December 21, 2013, 09:18:11 pm
As thin as a muffler is, you could get by with a MAPP GAS torch (Yellow Tank)
Title: Re: Muffler Mods Using Silver Solder
Post by: alsled on December 21, 2013, 09:23:22 pm
660, for me it comes down to control of the puddle, brass or solder,,,, well it can go every place, but still be strong.
Title: Re: Muffler Mods Using Silver Solder
Post by: KilliansRedLeo on December 21, 2013, 09:25:44 pm
As usual, all the answers are here! Thank you ALSLED & 660Magnum! I already have the MAPP gas setup, may need a smaller torch tip for better control but we will see. I use my current setup for plumbing so might want a more concentrated flame.
Title: Re: Muffler Mods Using Silver Solder
Post by: alsled on December 21, 2013, 10:14:33 pm
Propane or map, regardless of the tip, will never have the control or tip of the flame of a oxy act setup
Title: Re: Muffler Mods Using Silver Solder
Post by: alsled on December 21, 2013, 10:22:44 pm
http://www.youtube.com/watch?v=kPW06n-27FY
Title: Re: Muffler Mods Using Silver Solder
Post by: KilliansRedLeo on December 21, 2013, 10:31:07 pm
I know, when my brother and I raced motorcycles we took a  very small setup with us. About the size of a scuba setup. Do not have it any more, wish I did.
Title: Re: Muffler Mods Using Silver Solder
Post by: jmester on December 21, 2013, 10:48:59 pm
I got a little set up that run oxygen and mapp gas from lowes that is very small and great for brazing on a muffler. It uses the same size bottles as a propane plumbers torch. It is made by bernzomatic.http://www.bernzomatic.com/item.html?id=30 should be model number ox2550kc
Title: Re: Muffler Mods Using Silver Solder
Post by: jmester on December 21, 2013, 10:51:57 pm
Takes up very little space and puts out some good heat. I am glad that I bought it. Does a nice job with 1/8" bronze brazing rods.
Title: Re: Muffler Mods Using Silver Solder
Post by: 3000 FPS on December 21, 2013, 10:52:15 pm
If I was in your shoes and wanting to learn a new,, lets say, how the F... do I fix this.  Stop out at a local welding center, prax air or rogers or who ever is around your area, bring a muffler and show them what you want to do.

I found this site just for the same reason, How the F??? do I fix this.

3000FPS may be a good lead, I'm just a backyard welder, not a pro.

Sorry guys I am just  backyard welder like you.   I just happen to have a tig welder and learned how to weld magnesium by trial and error.   I have never silver soldered or brazed anything before.   I am interested in any information you get also.

If you are tight on space they do make some very small bottles for Oxy aceltylene welding and I really do not know if mapp gas would get hot enough to do what you want.
Title: Re: Muffler Mods Using Silver Solder
Post by: jmester on December 21, 2013, 11:01:07 pm
I will say this it is a little tricky to get a good neutral flame. There is only one adjustment for the gas flow per bottle. But for the dozen times a year I use it, I  like it.
Title: Re: Muffler Mods Using Silver Solder
Post by: jmester on December 21, 2013, 11:05:29 pm
Here is another oxy/ ace set up like I think you where referring to with the scuba setup.http://www.amazon.com/Ameriflame-T100-Portable-Welding-Carrying/dp/B007VLW35Q/ref=pd_sim_sbs_hi_3
Title: Re: Muffler Mods Using Silver Solder
Post by: 3000 FPS on December 21, 2013, 11:33:14 pm
Here is another oxy/ ace set up like I think you where referring to with the scuba setup.http://www.amazon.com/Ameriflame-T100-Portable-Welding-Carrying/dp/B007VLW35Q/ref=pd_sim_sbs_hi_3

You know that is not a bad deal.  If I did not already have a oxy acetylene set up already I would be interested in that.
Title: Re: Muffler Mods Using Silver Solder
Post by: brokenbudget on December 22, 2013, 02:37:53 am
I use silver solder for all my muffler mods. far easier to use than bronze as you don't need to excessively heat the crap out of the parts. most times it's stronger than bronze. adheres better as well.
lots of talk about 'puddle control'. it's a non-issue somebody is making out to be an issue. the silver (or in other cases bronze) will follow the crack, seam, hole, connection, etc. with no help if the area is cleaned and fluxed properly.
the only issue I have doing it this way is cost. the price of silver solder has been steadily creeping up. it's still cheaper than brazing if you factor in the cost of the oxy-acetylene gasses.

I use this with map gas for the heat: http://www.bernzomatic.com/item.html?id=21

this is the silver I use: http://www.harrisproductsgroup.com/en/Products/Alloys/Brazing/High-Silver/Safety-Silv-50.aspx

the map gas goes a long way. way farther than a small oxy-acetylene tank set up will. barely costs a 1/4 of the price to get a refill and doesn't stink up the place like acetylene does. i'll pick it first over bronze, tig/mig or the sparkle box as it's the quickest way getting that tube attached to the muffler and it's damn strong. it also won't crack like bronze or an over heated tig weld will.
Title: Re: Muffler Mods Using Silver Solder
Post by: KilliansRedLeo on December 22, 2013, 09:50:04 am
OK, Brokenbudget! MAPP gas it is! For the price and size it is the smallest and cheapest way to go for me. I like the long tube torch setup you use. Check out this silver solder that Asled mentioned

http://muggyweld.com/all-products/silver-solder

It is called ssf-6 flux on rod, stuff looks to work well but I am wondering if separate flux and solder would make for a better result
Title: Re: Muffler Mods Using Silver Solder
Post by: brokenbudget on December 22, 2013, 10:05:12 am
I've used similar stuff to the link asled posted. I'd rather use the separate flux and wire. that way you can have the flux on there to sit and clean the area better. stick with the water based flux's. that way you can use water to thin it out if needed.
Title: Re: Muffler Mods Using Silver Solder
Post by: KilliansRedLeo on December 22, 2013, 11:21:33 am
Thanks, I was thinking the same thing.

Tim
Title: Re: Muffler Mods Using Silver Solder
Post by: Al Smith on December 22, 2013, 08:05:09 pm
True air conditioning grade silver solder is very expensive .A lot more expensive than soft brass(easyflow ).

FWIW any hard soldering which is what brazing is is stronger  if you can use lap joints instead of butt joints .

On this kind of stuff I'm old school and in spite of the cost prefer actylene to MAPP or propane .As far as welding I'm basically self taught but at one time I held state certifications on both structural steel and pressure piping .

The gas welding I was taught by one of the best ,my father .The old boy even at 80 could  preform magic with a torch .

A couple years a couple of California clowns made some bold statement I didn't know how to gas weld so I put a picture on of a vertical up on a tin can . That's the last I heard on that subject . ;D
Title: Re: Muffler Mods Using Silver Solder
Post by: KilliansRedLeo on December 22, 2013, 08:12:07 pm
That is pretty slick, how did you do it without burning through the cans...........

I know I know..............very carefully!

 ;D ;D ;D
Title: Re: Muffler Mods Using Silver Solder
Post by: Al Smith on December 22, 2013, 08:30:54 pm
The trick is the tip size and the filler .That was either an "0" tip or a "00" .The gas was so low it didn't register on the gauge and maybe 1LB pressure on the O2 .The filler was soft steel tie wire .FWIW I've got tips from 00 to number 12 .A 12 you can fuse 1/4" steel clear through .Uses up the gas though .Not used very often .

On that tin can I doubt I had much over 1/8 inch of hot blue flame ,tedious .You get a flame that low it's tough to keep in on track and not too close to get a back fire which will blow a hole .Truthfully I blew a couple holes because it took me three attempts to get it .I proved my point though . ;)
Title: Re: Muffler Mods Using Silver Solder
Post by: KilliansRedLeo on December 22, 2013, 09:08:10 pm
Well good on ya! Thank you for being so honest