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#Post#: 4450--------------------------------------------------
Welding cylinders to fix them
By: Chainsawrepair Date: October 10, 2011, 4:50 pm
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I had a friend that repaired aluminum cylinder heads on cars,
etc and figured someone must have tried fixing broken chainsaw
cylinders.
Come across this video showing a common repair on broken
cylinders. 8)
(HTM) http://www.youtube.com/watch?v=HdMK9lRGH-M
#Post#: 4452--------------------------------------------------
Re: Welding cylinders to fix them
By: nmurph Date: October 11, 2011, 7:12 am
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I work at a technical college and have the benefit of a
world-class welder (he teaches Certified Welding Inspectors
their craft and also was a welder inside nuclear containment
vessels) as one of our instructors. I asked him about welding on
saws....the bottom line is that he welded a fin back on a 346NE.
The piece was missing when I got the saw. I had another cylinder
that was beyond repair. I cut the fin on and fitted it to the
missing stub. When it was cleaned it up, you could hardly tell
where he had been. He has also TIG'd a CB mount and repaired a
crankcase fracture on 346's. On the CC and CB repairs, you will
need Mg rod and I couldn't find it locally in small amounts. It
was $150/lb with a 3# minimum. I did find someone on Ebay
selling it for $2.50/3ft length. The shipping was $13.50, one
stick or multiples, so I bought a handful.
#Post#: 4453--------------------------------------------------
Re: Welding cylinders to fix them
By: Al Smith Date: October 11, 2011, 11:18 am
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I've never done it mainly because I don't have a heli-arc rig .
On my avatar picture that 2100 Homelite has had a lot of welding
done to the starter .My buddy who owns a welding shop did it .
Evidently the decomp wasn't working and some gorilla type on the
west coast nearly jerked the starter off it .However it was must
have been strong as a bull .
#Post#: 4459--------------------------------------------------
Re: Welding cylinders to fix them
By: farmboy Date: October 12, 2011, 7:49 am
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7-8 yrs. ago I dought Hobart Mig Handler 250. Also bought the
aluminum welder that uses 1# spool in the gun, gas tank that
goes with it. Still haven't used the alum welder. Don't have a
tig do you think the alum. welder will do cyls?
Shep
#Post#: 4460--------------------------------------------------
Re: Welding cylinders to fix them
By: Al Smith Date: October 12, 2011, 9:26 am
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From what little I know about it, it's more the alloy of the
metal .With TIG in my opinion you have better control than with
a wire welder also .
Now I've never claimed to be a good heli arc welder on aluminum
mainly because I never had any reason to be .However using TIG
on steel I've done stuff that would be very difficult to do with
a wire welder .Such as welding a bandsaw loop back together .
Within the last six months I had a welder at work weld the cases
of an 038 mag because of a hole in the oil tank .It took him
about 4 different types of filler rod until he found the correct
alloy to use .So on that unless a person knew going in what the
alloy make up is it would be hit and miss .
Rambling on .On cast iron there are so many types,the way it's
cast etc that none of it reacts quite the same .John-Deere for
example is very easy to weld .Caterpillar and old Ford are very
difficult .--and so it goes . However I'd much imagine that
certain components of chainsaws would also present a challange .
#Post#: 6381--------------------------------------------------
Re: Welding cylinders to fix them
By: StumpysCustoms Date: January 6, 2012, 11:08 pm
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I have fixed a few cyl before after taking a lil to much
material out when porting. First one was a 088 :-\ on the intake
runner. I haven't welded any fins back on yet, but certainly
doable.
#Post#: 28723--------------------------------------------------
Re: Welding cylinders to fix them
By: doreadeal Date: December 4, 2013, 5:10 pm
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I havent had the need to do it but yes it can be done. Cylinders
arnt a heat treated aluminum, so you don't have to worry about
that.
#Post#: 88831--------------------------------------------------
Re: Welding cylinders to fix them
By: Chainsawrepair Date: December 28, 2021, 9:55 am
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(HTM) https://youtu.be/iNwRRtXhw0g
#Post#: 88950--------------------------------------------------
Re: Welding cylinders to fix them
By: Cut4fun Date: January 31, 2022, 8:20 am
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Shaun Carr = I've been welding plug threads up on rare or
expensive chainsaw cylinders for a long time. I've tried to
capture and share some of the tricks I've learned over the
years. There is a lot more to it than just welding since you
have to handwork the chamber back.
(HTM) https://youtu.be/coITcuFSPxQ
#Post#: 88954--------------------------------------------------
Re: Welding cylinders to fix them
By: 3000 FPS Date: February 2, 2022, 9:20 am
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Shaun is a pro that is for sure.
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