gonna build a stroker crank.

[rustred]

is this a good start?

 

[Janicholson]

The root of the rewelded areas might be shallow in that the image does not show how the intended journal would meet the existing journal. It will take both machining and grind/polish to get it shaped correctly, then heat treatment and straightening. Start? depends on the massive skill needed to get the crank back to usable and strong. Jim

 

[Absent Minded Farmer]

is this a good start?

You missed a spot with the buffer wheel.

Mike

 

[stevieb49829]

Way beyond my pay grade! But I applaud you if it turns out well. steve

 

[used red MN]

Way beyond my pay grade! But I applaud you if it turns out well. steve

Stevie, he is pulling your leg he found that picture elsewhere and reposted it. I agree with AMF, the RMS is not quite there.

 

[stevieb49829]

Stevie, he is pulling your leg he found that picture elsewhere and reposted it. I agree with AMF, the RMS is not quite there.

I looked at the background in the picture, and decided the shop may not be quite up to the task of taking that back down to a useable piece of machinery. It did look like a setup for some laughs though. But who knows. Your results may vary. steve

 

[MSD]

Seen some Oliver stroked ones that didn't look much better than that when done outside of the journals being smooth. They all look pretty rough when getting welded up.

 

[rustred]

ya, good for a laugh and it tractor related lol.

 

[Hemmjo]

I think the welder was a lot better when he did the center/left crank pin than he was when he did the other 3.

Looks like a good way to practice building up things like that.

 

[Oregon Tractor Jack]

I watched a video awhile back featuring the repair of 6 cylinder diesel crankshafts. It looked like it was filmed in Pakistan or some place similar. The guy was taking two broken cranks and welding them together. Used some ancient buzz box and an similarly aged lathe. Cut, fitted, welded and straitened. A whole stack of cranks in the back ground. The shop in the picture above looks like a palace compared to the one in the video. Pretty interesting how it was done.

OTJ

 

[used red MN]

My apologies to rustred, this is going off the topic of “tractors” but I will blame OTJ! In my book if it is tractor related, a repair or building involving any tools or farm related it is good to go.
Here are a couple videos taken in lesser developed locations. These guys are repairing a large part of a rock crusher. Interesting to me is the dirt floor and wear sandals and Jesus clothes. (not meant to be disrespectful, just a description everyone understands)
Rock crusher repair
Down that same line I posted about bolted piping flanges a while back when Grandpa love said he had a large nut left over from a recent repair of a Cub Cadet mower. These guys in China are pounding out a piping flange.
Forging a flange

 

[Rich'sToys]

is this a good start?

Go for it!!

 

[shaun wallace]

Kinda on same line. Over there somewhere they were straighting rebar , then making bolts out it.