Author Topic: Welding Chainsaw Parts  (Read 5666 times)

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Offline aclarke

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Re: Welding Chainsaw Parts
« Reply #80 on: June 23, 2014, 06:34:54 pm »
Repairs look great.   What are you using for filler on the mag? Case (side cover) repairs?

Offline 3000 FPS

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Re: Welding Chainsaw Parts
« Reply #81 on: June 23, 2014, 11:25:45 pm »
I am glad you showed that.   I do not believe I have ever seen anyone weld a plug hole before and cut in new threads.
Not to mention what could be an expensive cylinder.
Nice job.

I did the job so save a friends profit margin.  I think I'll get the porting done on it tonight/tomorrow.  It should be a good runner... I doubt he'll sell it after I get done with it.

I have a 2100 cylinder to do the same thing on when I get time.  Next time I'll switch to a smaller torch (not the giant 300 amp 18) so I can get my first past a little cleaner.  I had to reach down into the cylinder with a long collet cup and blend in the camber side basically by braille as I could not see anything. 

 So your saying that you welded that from both sides.   That is impressive.
PP 505, 475, 445.

Offline 3000 FPS

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Re: Welding Chainsaw Parts
« Reply #82 on: June 23, 2014, 11:27:31 pm »
Repairs look great.   What are you using for filler on the mag? Case (side cover) repairs?

The rod is AZ92A.
PP 505, 475, 445.

Offline aclarke

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Re: Welding Chainsaw Parts
« Reply #83 on: June 24, 2014, 12:12:33 am »
Thks. I've always used 91a, any meaningful difference between the two? Adam

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Re: Welding Chainsaw Parts
« Reply #84 on: June 24, 2014, 12:31:05 am »
Thks. I've always used 91a, any meaningful difference between the two? Adam

I do not know since I have always used 92A and it always seemed to be a good match.   
PP 505, 475, 445.

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Re: Welding Chainsaw Parts
« Reply #85 on: June 24, 2014, 12:40:06 am »
I was just looking at the spec sheets on the two rods and it looks like there is a difference in the composition between the two.
The AZ92A would be considered more of a general purpose filler rod for magnesium.   

I know that SRCARR52 is pretty knowledgable in this area also.
PP 505, 475, 445.

Offline aclarke

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Re: Welding Chainsaw Parts
« Reply #86 on: June 24, 2014, 09:26:03 am »
Ok thanks. What type of Tig do you use? 

Online srcarr52

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Re: Welding Chainsaw Parts
« Reply #87 on: June 24, 2014, 10:23:06 am »
So your saying that you welded that from both sides.   That is impressive.

Yes, I had to to get a good finishing inside the chamber.  Luckily I had a bunch of long gas cups from welding cylinder heads back in the day.

I was just looking at the spec sheets on the two rods and it looks like there is a difference in the composition between the two.
The AZ92A would be considered more of a general purpose filler rod for magnesium.   

I know that SRCARR52 is pretty knowledgable in this area also.

I use AZ92A.  I think, but don't quote me, AZ91A is more for sheet/billet mag where AZ92A is supposed to be better for cast and die cast like we are always welding. 

Ok thanks. What type of Tig do you use? 

I have a Lincoln Ideal Arc 300.  It's old, sine wave, no cool features except high frequency start so I don't have to scratch start.  It does have a water cooled torch which is awesome.  A newer square wave with AC balance would work much better but this works for now.

Offline aclarke

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Re: Welding Chainsaw Parts
« Reply #88 on: June 24, 2014, 03:00:50 pm »
Good deal! I have the same 300 Lincoln I use mainly for steel, great old machine! Really nice arc down low for thin material. Miller Aerowave I use for alum/mag. I'll try some of the AZ92

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Re: Welding Chainsaw Parts
« Reply #89 on: June 24, 2014, 08:03:05 pm »
What I have is a miller synchrowave.  It does not have square wave either but it does have high frequency. 
PP 505, 475, 445.

 

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