prop nut tightening

[995jim]

Hi, is using a 2x4 wood block as a jam work to torque the prop nut or is this a big no no?

 

[Alumarine]

Works just fine.

 

[Mc Tool]

Yep ,one of my 'strucshin books even sez to do that ....well not specifically a 2 x 4 but a lump of wood

 

[crazy charlie]

4x4

 

[Jeff J]

Never needed anything bigger than a 2x4. I keep a piece about 6” long in my truck just for removing and installing props on the dock.

 

[airshot]

I prefer a piece of wood, but....in an emergency, I have used a rag tied into a couple knots and jamed between prop and cav plate, to get the nut tight.

 

[Pmt133]

I usually just hold the blade with my hand. I actually put a torque wrench on it the other day when I reinstalled the prop and was able to hit the 55 lb-ft no problem that way. I usually use a block when it's in the water and I'm swapping blades as it's easier.

 

[Mc Tool]

I figured that the torque spec was a bit "ball park" as it goes ....you torque the nut to spec and then either lean on it some more or back it off so the pin hole in the shaft lines up with the slots in the nut .
I cant see the point in using a torque wrench , just tweek it up to the point where Im sure things are firm and bung in the pin . None of my motors need that nut tightened up against a bearing to remove end float in the shaft (like a lot of motorbike stuff )

 

[Jeff J]

I have removed several prop nuts with my fingers that were installed by people who didn’t see the need for a torque wrench. The prop rattling on the shaft. The last one was installed by a dealership.

Some manufacturers have a range where something like 50 pound feet is a minimum and around 90 pound feet is the max. It seems like I saw one that read along the lines of 45 min and tighten to the nearest hole. Others just state one value.

 

[Pmt133]

I figured that the torque spec was a bit "ball park" as it goes ....you torque the nut to spec and then either lean on it some more or back it off so the pin hole in the shaft lines up with the slots in the nut .
I cant see the point in using a torque wrench , just tweek it up to the point where Im sure things are firm and bung in the pin . None of my motors need that nut tightened up against a bearing to remove end float in the shaft (like a lot of motorbike stuff )

I was bored and it was there lol. Rather than digging for the prop tool I used that and the punch to bend the tabs since it again... was right there. I'm usually a good and tight guy myself... and usually have to lean into it to remove it.

 

[Mc Tool]

Yeah tight enough that I cant hold the prop with my left hand and spanner the nut with my right.....I have even used the boot I was wearing