MS260 broken mounting hole for chain brake

[singinwoodwackr]

Ya it is possible to do with a Tig welder and if your buddy is a skilled tig welder it's worth a shot.

Mag rod is $140 a tube

 

[Sidecarflip]

How does he plan on welding it? I'm not sure what magnesium alloy Stihl uses but I'd be surprised if you could braze it without the case melting let alone weld it.

You don't even want to know what mag rod costs and you can TIG is but again, not cheap/

 

[thompsoncustom]

Ya that stuff is crazy expensive and like I said if it was me I'd run it without the brake but you can buy small amounts like single rods or 3 packs for places like blue demon.

Used OEM case or new aftermarket case might be a better option.

 

[singinwoodwackr]

Ya that stuff is crazy expensive and like I said if it was me I'd run it without the brake but you can buy small amounts like single rods or 3 packs for places like blue demon.

Used OEM case or new aftermarket case might be a better option.

I only see 1# tubes available…Amazon, eBay, Grainger and their own online store.
$136-300+
None of the welding supplies places around here can even get it.

 

[thompsoncustom]

hampon does but there based out of Aussie so shipping would be the killer there. Maybe contact blue demon and see if they will sell smaller packs or have a distributor in the US that does.

 

[freeasaburt]

I'm from Belgium, there's really specialized shops (one is a 2 minute drive from where I live) who can order about anything if they don't have it in stock, specifically 'pro grade' stuff, but it's probably gonna be expensive indeed.
We're trying to find a good donor saw, once we have one we'll see from there. Trying to repair the case still seems like an interesting challenge, with a case swap as 'plan B'.

 

[Sidecarflip]

Ya that stuff is crazy expensive and like I said if it was me I'd run it without the brake but you can buy small amounts like single rods or 3 packs for places like blue demon.

Used OEM case or new aftermarket case might be a better option.

'Ya"....I have a full tube of Mag rod I purchased from my LWS in Toledo, Ohio and I've had it for a while now and used some on a Dolmar with a cracked case. Mine is Stoody, not Blue Demon and I believe I paid around 130 bucks for it.

The issue with Tigging a mag case is, One, the unit must be completely disassembled, Two, the part must be squeaky clean, I mean squeaky as in no contaminates present. Three, the crack must be properly prepped and Four, You better be very proficient at Tig welding exotic alloys or your results won't be good and it takes a TIG machine with the correct attributes to do it. I don't know of anyone that offers single rods or even multiple ones, only full one pound tubes.

 

[weewendler]

Bead blast clean. Add a couple of grooves to the sides of the boss, like finger grips. Drill some 1/8 inch holes 1/8 deep into the side of the boss's webbing. Use 90 percent alcohol to clean before gluing. Coat stud in JB weld. Install stud. Generously fill in with JB weld where the boss broke and into the 1/8 holes. You can always grind off the excess. Give a week to set.

 

[freeasaburt]

Thx! He found a donor saw though, case in good condition.

 

[singinwoodwackr]

Bead blast clean. Add a couple of grooves to the sides of the boss, like finger grips. Drill some 1/8 inch holes 1/8 deep into the side of the boss's webbing. Use 90 percent alcohol to clean before gluing. Coat stud in JB weld. Install stud. Generously fill in with JB weld where the boss broke and into the 1/8 holes. You can always grind off the excess. Give a week to set.

That would probably work as the amount of tension on that stud isn’t massive. There seems to be enough of the original hole left to make it work. Those studs are found on dozens of similar Stihl saws so are readily available.