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No welding, needed only a small hammer and lots of patience... ;)

Here are some pics. Rake angle was zero before mod.

It's 16 ft.

No problem, I still have 2 or 3 lower units as spare parts. I'm pretty sure that oil seal under water pump failed -> water in/oil out -> bang! Yes, I have water pick up tube at the transom and...

Well... I gradually added pitch along outer half of the blade. This is not a typical racing cleaver, its more like a "Mickey Mouse" fishing motor bronze prop from the 60's but with straight, cupped...

Had fun with friends in Saturday. Here is some onboard footage, the fun part starts at 5.40... https://www.youtube.com/watch?v=JDFPGljIgY8&t=14s

I modified this prop by adding about 1/2" more rake. Income: comes out of the hole better, even trimmed out (3rd hole). Gained a bit speed, too, now we are above 38 knots (driver only). Still...

Phil, you are right with weight distribution. But it's not the way you think. There should be more weight in the rear end. Problem with take off is, this boat lifts its rear end too soon,...

Don't let pics and videos fool you, gunwales and hull bottom are not parallel. Trim setting is +1 to -3 degrees depending on conditions. I don't have hydraulic trim/tilt so it's not possible to...

Thanks Phil, I'm very happy with that set up, it was trimmed a couple of degrees negative due to choppy water. It was easy to cruise @34-35 kn with no whoopsies, topped out @37 kn. I'll try it an...

Prop shaft 2" below hull bottom, worked well in choppy water.
https://www.youtube.com/watch?v=UI3tgFVkeGs
https://www.youtube.com/watch?v=YqVFS4vfUv0

Jack plate with 4" setback.

Jacked up 2" -> 40,5 mph@5000 rpm. Porpoising, must try again with full tank & co-driver on board.

I have had those gears in my hands numerous times, so no need to re-check... ;) Anyway, i'm already happy with the prop, and i'm sure it will build more speed when jacked up a couple of inches. ...

Gears are 21:13 and speed was from GPS.

First test run, propeller fully submerged... 38,5 mph@4800 rpm. Not bad at all. :)

That's Chrysler 14 spline hub, going to make it solid. Yes, MSSA is in my plans, hope I will make it to Puumala this year. If I'm lucky, maybe even back to Lappeenranta... =D

Cleaned it a bit with 320 grit paper. Next job is to make a press fit sleeve for the hub and put it all together. Truing and a test drive after that. Wish me luck... ;)62337

Measured it, pitch is 13" average. Anyway, I'll give it a try...

Hi, folks!
I recently acquired an old Columbian cleaver "L6 JB". Diameter is 10 1/2" and pitch looks to be around 14"-15". Hub is cushioned, 20 mm smooth bore with shear pin. Fits to some 60's...