Mcculloch Super Pro 125c Complete rebuild.

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Its a calculated risk guys. Im not telling you to try it yourself, and im not saying that its the safest thing in the world do to, but we're all supposed to be grown men here and we can all evaluate our own decisions before making them and take responsibility for the outcome.

.

I took a gamble and it payed off.

You did something stupid, against the advice of people who know more than you and were honestly trying to help you.

You need to slow it down a notch and start listening and doing as you're advised. Soon.
 
Its a calculated risk guys. Im not telling you to try it yourself, and im not saying that its the safest thing in the world do to, but we're all supposed to be grown men here and we can all evaluate our own decisions before making them and take responsibility for the outcome.

You chose not to use your noggin when you "calculated" said risk. You got lucky. Ever seen what happens when a reservoir for an air compressor decides it's time for retirement before the owner? The lucky ones leak first.

The internet is a dangerous place. Some people don't know any better when they see other peoples stupid mistakes and use those as examples to follow. What you saw happen here is the responsible folks chiding you for doing something stupid, so that other's won't make the same stupid mistake.
 
You couldn't put the flywheel back on the first time with out miss aligning the key way and wrecking the key, flywheel and crank. What makes you the one to decide if something is a "calculated risk"? You are a danger to all the other members reading this thread who don't know any better than to think that you know what your doing. It's too bad that you can't lock your self out of the forum.

Just put a garage door on it, and he will.............:D
 
Just wondering, if you're not an engineer, how did you calculate the risk?

ti-mickeymouse.jpg
 
I've used the above mentioned method on tires before.....

It does work. :)

Anyway, use tire paste now, lots safer and works just as well, but slower. As for two piece rims, they are dangerous, they scared me way more than the above mentioned tire seating method. Good thing they went away from those, they were like a ticking time bomb.

Know of a guy that had a one-piece rimmed tire blow on him when he was filling it. Threw him up against the guardrail and hurt his back, luckily it didn't seriously injure him.

An insurance agent here went out for a claim one time when an air compressor exploded in an attached garage. He said it blew the whole side out and half the roof off it!!!

I worry about mine sometimes now.

Anyways, maybe a "don't try this at home" disclaimer?

ETA: I've used that tank resealing stuff you get for metal ATV tanks with success on those tanks, wonder if it would be of any benefit here?
 
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Putting a 125 psi to something unknown to me is
very dangerous. Look what happens when a truck
tire lets go that uses the old style split rim. And
they were only inflated to 90-100 psi. Many have
died. If the glue in the Mac 125 tank was a bit
stronger then whats the next weakest part. I'll
tell you what, I don't want to find out.
Lee

This guy found out the hard way.

<a href="http://forgifs.com" target="_blank"><img src="http://forgifs.com/gallery/d/204117-1/Vandal-slashes-tire-karma.gif?" alt="forgifs.com" /></a>
 
hkusq9- during meal breaks myself and others used to use 125psi to shoot 3/8" x 8" long pieces of steel through 1/2" birch and pine plywood from about 15' away. Volume of contained pressure and how it is released plays a role in the destruction and as others have mentioned it is dangerous to do what you did. Ask your ram providing superior officer what happens if you lose a thumb or an eye, at home, playing with chainsaw parts.

Next time dry the tank out completely, wash it out with soapy water at least 4 times, dry it out again completely and apply even low heat, then tap it apart with a wooden mallet and peg. It will take longer, but it is a safe and in terms of the parts being worked on it is a more controlled seperation. Do all of this in a well ventalated area using appropiate precautions.

Using pressure to break an epoxied seam is risky as the epoxy only needs to be slightly stronger than any other part being pressurized to produce a crack. The crack may not even show it's self until the part is reassembled and put back into use, vibrations make a tiny problem bigger.

In the grand scheme of things I would suggest that you treat rebuilding a chainsaw with the same reverance as rebuilding a firearm. The devil is in the details. If you do not know, ask, and wait for an answer. That flywheel you beat on with such abandon is spinning really really really fast, at CROTCH level. That tank you want to JBWeld is holding gas at CROTCH level, in front of a device that creates sparks and another that catches them.
 
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