What's needed to go from metal to wood prop?

[woodmw]

I've been toying with the idea of changing from metal to wood prop on my BC12D w/ A-65. Sensenich W72CK42.

My list of needed items:

Prop
Bushings
Crush plate
Bolts, nuts, washers

What am I missing? Does wood prop mount to same hub as metal? Recommended sources?

And I know I need to find a mechanic that is familiar with installing wood props.

[3Dreaming]

Re: What's needed to go from metal to wood prop?

I've been toying with the idea of changing from metal to wood prop on my BC12D w/ A-65. Sensenich W72CK42.

My list of needed items:

Prop
Bushings
Crush plate
Bolts, nuts, washers

What am I missing? Does wood prop mount to same hub as metal? Recommended sources?

And I know I need to find a mechanic that is familiar with installing wood props.

Your parts list looks complete. The big thing about the wood prop is follow the manufacturers instructions on torque, and recheck after running it for a little while. The other big thing is the prop hub will have to be removed to change the bolts if you have a tapered shaft engine. Make sure your mechanic knows how to do this, so he doesn't damage your hub.

[Guest]

Re: What's needed to go from metal to wood prop?

Your parts list looks complete. The big thing about the wood prop is follow the manufacturers instructions on torque, and recheck after running it for a little while. The other big thing is the prop hub will have to be removed to change the bolts if you have a tapered shaft engine. Make sure your mechanic knows how to do this, so he doesn't damage your hub.

Hi Tom,

You are gonna hate me for this but I would be careful of following those instructions. The only time I ever damaged a hub was when I followed the manufactures torque specs on a new prop going onto a new a65 hub around 1998.

The instructions have to be examined. I Ended up not using the torque spec. but rather the spec that says for a certain prop thickness at the hub that you turn the nut x turns after wood contact.

Dave

[3Dreaming]

Re: What's needed to go from metal to wood prop?

Hi Tom,

You are gonna hate me for this but I would be careful of following those instructions. The only time I ever damaged a hub was when I followed the manufactures torque specs on a new prop going onto a new a65 hub around 1998.

The instructions have to be examined. I Ended up not using the torque spec. but rather the spec that says for a certain prop thickness at the hub that you turn the nut x turns after wood contact.

Dave

No hate, but I have never had any problems following the torque figures provided by Sensenich for thier propellers.

[Guest]

Re: What's needed to go from metal to wood prop?

Hi Tom,

I may be wrong about the value but I recall something like 185 in-lbs and it would never reach that value so many turns of the nut took place and the flange got warped as it was pulled into the bushing hole. The bushing does/did not fit tight against the hub.

Dave

[Buell Powell]

Re: What's needed to go from metal to wood prop?

Mike,
Just to let you know-there is an illustrated article in technical resources about removing and installing the prop hub--it's not that difficult using these instructions but as Tom said someone could damage the hub if done improperly.

[3Dreaming]

Re: What's needed to go from metal to wood prop?

Hi Tom,

I may be wrong about the value but I recall something like 185 in-lbs and it would never reach that value so many turns of the nut took place and the flange got warped as it was pulled into the bushing hole. The bushing does/did not fit tight against the hub.

Dave

Dave, the figures are 175-225 in-lbs or 15-19 ft-lbs. I have mostly dealt with taper shafts and prop hubs. Bushings were always put into the prop before installation. I have never had any problems like you describe..

[Guest]

Re: What's needed to go from metal to wood prop?

Thanks Tom,

That's good to know that you have not had issues.

Maybe I had a sub-standard prop hub? It was a Continental new part (taper shaft). That was quite a find in 1998!

Dave

[3Dreaming]

Re: What's needed to go from metal to wood prop?

Dave, just a thought. I have never had to pull anything in to place with the prop bolts. If you were pressing parts toghether with the bolts I could see how there could be a problem.

[Guest]

Re: What's needed to go from metal to wood prop?

Dave, just a thought. I have never had to pull anything in to place with the prop bolts. If you were pressing parts toghether with the bolts I could see how there could be a problem.

Tom,

sorry I mis-stated it.

nothing has being pressed into or pulled into place, the bushing were just shorter than the hole, that's what I was thinking of when I typed it,

Dave

[N95334]

Re: What's needed to go from metal to wood prop?

Will you be selling your metal prop? I need a prop for my Cont 65hp BC-12D

[woodmw]

Re: What's needed to go from metal to wood prop?

Will you be selling your metal prop? I need a prop for my Cont 65hp BC-12D

I have just about decided that $2500 is a bit much to get less performance and more maintenance just to get a cool looking prop. I think I'll put this idea on hold for now.

[Hank Jarrett]

Re: What's needed to go from metal to wood prop?

Mike Wood with a metal prop. ;-( Just don't seem right.

Hank ;-)

[RyanShort1]

Re: What's needed to go from metal to wood prop?

I have just about decided that $2500 is a bit much to get less performance and more maintenance just to get a cool looking prop. I think I'll put this idea on hold for now.

Someday I plan on doing it. With students, sometimes that extra 10 lbs of useful load makes the difference in telling someone they'll need to find another tailwheel trainer to use.

[n6346m]

Re: What's needed to go from metal to wood prop?

I have just about decided that $2500 is a bit much to get less performance and more maintenance just to get a cool looking prop. I think I'll put this idea on hold for now.

Mike,
I have a beautiful "Falcon" wood prop from my A-65 that I no longer need. I would be willing to sell it at a reasonable price, but I really don't know what that would be. I also have the bolts for it. Although not as well known as the Sensenich props, the Falcon prop has a TC and is PMA'd and legal to use on the A-65 but not the C-90 that I have.