Industrial Fan Blade??

[jonhdw]

I found this propeller at the scrap yard today and thought it was from a large RC plane or something but it doesn’t have the bolt holes to mount to a hub like a regular propeller has. It just has a key way and some set screws. Can anyone help identify what this might have come off of? Maybe a large industrial fan? The whole thing is 36” long and fits about a 1.5” shaft. Any ideas?? Thanks!

 

[ttpete]

I found this propeller at the scrap yard today and thought it was from a large RC plane or something but it doesn’t have the bolt holes to mount to a hub like a regular propeller has. It just has a key way and some set screws. Can anyone help identify what this might have come off of? Maybe a large industrial fan? The whole thing is 36” long and fits about a 1.5” shaft. Any ideas?? Thanks!

That's probably for an ultra light aircraft. The yellow tips are to help see the prop when it's spinning.

 

[jonhdw]

Oh ok that makes sense too. I forgot about ultra lights. Do you know of any markings the propeller would have that I can look for to try to identify it? Thanks.

 

[bpjr]

About the minimum size prop you see on regular ultralights is around 52" and most are over 60". 36" might be off a motor glider like a Moni or one of those backpack powered parachutes. I don't know if the large scale rc planes go that big but you could try an rc forum. Shape wise it looks like a Master Airscrew prop for rc.

 

[m151]

If they threw it away, it could have made contact with something and be damaged or unbalanced. I would not use it without a guard.

 

[jonhdw]

Thanks. Yeah I’m definitely only going to use it as a display piece. I’m just curious if it came off of an aircraft or just a fan.