Sorry for the off topic post but I have pulled all straws.
Is there a machinist on here that I can send a small single cylinder crankshaft to for spray welding the rod journel and turning back down to spec? The local guy is afraid he will bend it with the heat and then break it when he trys to straighten it.
I really would like to finish a small 2 wheel tractor project and the bad rod and crank is holding me up on it.
Briggs model 8R6.
Can you not buy a new one cheaper than repairing the old one?
It's an 8R6 Royce. Perhaps that was possible 50 years ago.
Mack - It might be better to modify a newer crank. Often, there's little difference between part numbers of the same series.
Before I get your hopes up, I'll have to check the shed. I know there's a NIB crank and some rods in there. I just have to find them and check it out.
In the mean time, see if you can get specs on your old crank. (Measurements, throw, flywheel type, PTO shaft, etc.)
Back in 1974 we found our 1906 two cylinder Moline. It had been driven over a bridge and slid sideways down an embankment. It rolled over, knocked off the steering column and bent the crank shaft flange where the transmission attaches as well as twisting the shaft so the throws were not 180 degrees apart.
The engine had been rebuilt by a well known restorer in 1956, A Mr. Bill Kirk. He straightened the crank but he did not find the cracks or the fact that the throws were not 180 degrees apart. We believed it to be correctly rebuilt but when we started it up it ran with an uneven lope. So we took the engine apart and found the throws to be uneven and took the crankshaft to a good engine shop.
They x-rayed it and ground out the cracks. Then they turned it cherry red in a furnace and straightened it to the necessary 180 degree throws. Then they welded the cracks while it was red hot. Then they welded up the journals to the correct size and cooled it slowly for a day and a half. Then they ground it to size and it was like new. It cost me $900 in 1975 and I believe that I could have had a new one made for less.
Moline made plows and road grading equipment during the Civil War and they had a good steel mill. The crank was made from a steel billet rather than a casting. Moline made many of the car's parts from a very high grade of cast steel and they had a good reputation for their day.
Moline later on built automobiles with sleeve valves of the Knight patent. They sold the automotive part of the company, merged with Minneapolis, and then made tractors.
It should be noted that we selected the engine rebuilding company because they had the connection with the furnace welding folks.
For some reason I can not post a picture today. Just don't know why it will not attach ?
Long time Long Beach Model T Club member Phil Reed owns Electronic Chrome and Grinding Co., www.ECgrinding.com . Phil is of advanced age, so you might not get to talk to him. Regardless, mention Model T.
Spray welding WILL NOT work on a crankshaft. It is use for shafts that have a bearing like a pillow block bearing on it. A crankshaft can be build up by using a crankshaft welding machine. I build up T cranks to Std. It is not cheap, around here it runs $100.00 a throw. I think you will be wasting your time and money if you spray weld the crank. Check with an old time Auto machine shop in your town. Dan
Gosh,I will see what I can find on specs.
And I did call Briggs directly and they said they could only provide a list of possiable suppliers of the old parts..
Well,ye know how when you go to look for something else,something else pops up?
I went to dig out the Montgomery Wards Airline battery charger I have had for 20 years and when I moved some stuff out of the way to get it,there was a rough old engine missing most of it's parts.But there was that Splined crankshaft.I was afraid it wouldnt be right but I counted and sure enough,14 splines,and it was in great shape!
So I have been working on assembling that engine today.So I can call off the dawgs on this problem.Thanks for all the advice and such.
I reckon all them 2 to 10 dollar engines I have been buying for the last 25 years are starting to pay off!.IF I could just find them in all the stuff!
One would think that with all of the space in that big big big new sop, it would all be nicely organized <grin> ... Happy New Year Mack .
Be_Zero_Be in Leesburg, VA
Didn't we do this once before? Mack: I have a guy right here in town who has a extensive collection of new old parts. What I'd need is EVERY number on the shroud. Make, model & serial #. The serial # will give the exact same shaft you have. PM me the #'s if you wish. I'll get you a price before I make a move. I really don't think it'll be expensive.
shop not sop !!! ... dang fingers
Be_Zero_Be in Leesburg, VA
I noticed you mentioned your crank for your Moline is made from a billet.My 1905 Queen seems to have had the crank made from a solid rectangular chunk of steel too.The manual for the car mentions it was made from "open hearth steel". I had the crank magnifluxed during the engine re-build and it passed with flying colours(I watched the process myself and had it explained to me too). I tend to worry about things like cranks breaking,and have T owning friends experience this situation.I also had a friend with an '06 Cadillac break his crank on a tour last year.
Although I did a very extensive 450 hour + restoration to my Queen's motor and it runs like a Swiss watch...I still worry a little bit about cranks breaking.I've heard people say it's not a matter of "if"....but "when"...
Would you or anyone else care to comment in a little more detail regarding the pros and/or cons of a crank made out of billet steel?
Charlie,I found 1 here in my stuff I had lost until today that was crammed behind my parts bins.
I appreciate your offer of help sir for sure.
And to be honest,I will keep you in mind as I have a couple other Odd ball engines that I have no extra parts for.
And I aint sure I can get anything for the Pincor's I will be working on later in the winter.
Or this Airline Charger from montgomery wards.6 volts.Little engine was made I think by Lauson but aint sure.
just bumping this to the top in hopes Frank Harris will see my question