Length of driveshaft. 1958 Evinrude 10 horsepower.

[bobw]

It’s difficult to be in this hobby and not break a few bolts along the way.  Hope you can find a good driveshaft.  My ’58 Johnson 10hp was the first motor I restored and was fortunate the gearcase and driveshaft were in good condition.   See pic of restored motor.

Bob

1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1957 Evinrude Fastwin 18
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20

“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."

[billy-j]

bobw wrote:

It’s difficult to be in this hobby and not break a few bolts along the way.  Hope you can find a good driveshaft.  My ’58 Johnson 10hp was the first motor I restored and was fortunate the gearcase and driveshaft were in good condition.   See pic of restored motor.

Good looking motor Bob. Did you paint it and put on the decals? Or is it original finish? I’m lucky I live in the great lakes area of the country. Most motors here come apart very easy. Short boating season and freshwater run.

[fleetwin]

Billy

Are you sure it is the original gearcase??  Early models used pinion that was keyed to the driveshaft, later models used a pinion that was splined to the driveshaft.  Your 1958 came with a keyed pinion, but perhaps the gearcase was changed using the splined pinion.  These two driveshafts are slightly different in length.

[bobw]

I did a full mechanical and cosmetic restoration – all new ignition, carb overhaul, gearcase reseal, new water pump, new powerhead gaskets, and all new rubber grommets, paint job and decals.   Got the paint and decals from North York Marine.    Got my first experience with outboard motor broken bolt removal when I snapped off 2 cylinder head bolts.    Got too greedy and didn’t apply heat first – lesson learned.

Bob

1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1957 Evinrude Fastwin 18
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20

“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."

[Steve D]

If you need the measurement for the later splined driveshaft ’61-’63 it’s 25-9/16″

1 user thanked author for this post.

billy-j

[labrador-guy]

Her is a picture of my ’58QD.  I couldn’t find an individual picture so I posted some of my babies that I brought to Bathrick’s marina last December, two 10’s a 15 and an 18.  It sure is hard hauling these things and not scratching anything!  These decals all came from Discontinued decals.  Sometimes shipping from Canada takes a while. (northyork marine)   When I bought this motor it had no gear case.  It also looked like it was in a war zone!  It came out nice and I hope to run it next season.   I managed to run four OMC 10’s this summer but not the 58.

dale

[billy-j]

fleetwin wrote:

Billy

Are you sure it is the original gearcase??  Early models used pinion that was keyed to the driveshaft, later models used a pinion that was splined to the driveshaft.  Your 1958 came with a keyed pinion, but perhaps the gearcase was changed using the splined pinion.  These two driveshafts are slightly different in length.

Not 100% sure. The gearcase has the same exact color paint as the lower leg. The extension piece between lower unit and leg of outboard was definitely added at a later date. I am going to remove lower unit and take out the driveshaft extension but before I do I am going to note how much the driveshaft sticks up where the engine fastens at the top spline. Then I am going to remove driveshaft from lower unit. It’s the only way to know for sure. I was not aware that there 2 ways the driveshaft may go in lower unit pinion. Keyed or splined.

[fleetwin]

Be careful.  Attempting to pull the driveshaft out might get the driveshaft key jammed/dislodged/fall inside the gearcase.  Then you will have to disassemble the gearcase to find the key and reassemble.

OK, so someone added a 5″ extension to this unit, correct?  The color of the gearcase matches the engine perfectly?  Chances are good it is the original gearcase and has the keyed driveshaft.

Now, I have forgotten why you are asking about the dimension of the driveshaft to begin with, will have to reread the post.

Just as an aside though, will relate a mistake I made in this area.  Pulled apart a newer 10hp gearcase with splined pinion, gear housing and driveshaft were shot.  Found another gear housing but had to hunt up another driveshaft.   Scoured my dealer buddy’s driveshaft collection and was thrilled to find another good driveshaft, or so I thought.   Assembled everything, but the driveshaft was not spinning when I pulled the recoil.    “What could I have done wrong”?  I pulled the powerhead and the driveshaft was definitely too short, not engaging the crank splines.   Turns out the driveshaft I had found was for a long shaft 9.5hp!

[The Boat House]

I don’t normally open topics about post war motors as I don’t know anything about most of them. I noticed this one was getting hit a lot so I opened it to see if I could follow along Pretty much over my head till I got to Dales post. Impressive group of motors sir. Tubs

1 user thanked author for this post.

labrador-guy

[billy-j]

fleetwin wrote:

Be careful.  Attempting to pull the driveshaft out might get the driveshaft key jammed/dislodged/fall inside the gearcase.  Then you will have to disassemble the gearcase to find the key and reassemble.

OK, so someone added a 5″ extension to this unit, correct?  The color of the gearcase matches the engine perfectly?  Chances are good it is the original gearcase and has the keyed driveshaft.

Now, I have forgotten why you are asking about the dimension of the driveshaft to begin with, will have to reread the post.

Just as an aside though, will relate a mistake I made in this area.  Pulled apart a newer 10hp gearcase with splined pinion, gear housing and driveshaft were shot.  Found another gear housing but had to hunt up another driveshaft.   Scoured my dealer buddy’s driveshaft collection and was thrilled to find another good driveshaft, or so I thought.   Assembled everything, but the driveshaft was not spinning when I pulled the recoil.    “What could I have done wrong”?  I pulled the powerhead and the driveshaft was definitely too short, not engaging the crank splines.   Turns out the driveshaft I had found was for a long shaft 9.5hp!

Hello Fleetwin. I am removing the 5” extension that makes a motor fit a 20 inch transom and returning it to a 15” transom motor. I have some AOMCI friends I am going to see in the next few days. I was looking for a driveshaft length so i could have them look at some of their extra  parts on the chance they may have had one. With all the variables with these lower units I am going to remove the long driveshaft that is in motor and lower unit see what the ends look like and knock off 5” in length so I know exactly what I need. We only had 1 meet scheduled for this year left and probably will not see a lot of these guys till next year. It was just a quick gamble to pick one up but I am going to have to dissaemble everything to get my answer. Also I am planning to reseal lower unit anyway.

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