new variable pitch propeller design Ive been working on-Ive geared up a large PF motor and fitted the prop. Kind of looks like a Pratt and Whitney Canada PW100. Prop goes from max coarse to reverse pitch but no feather yet. I plan to fit 4 of them to the propliner Im building at the moment. Ive used one modified part in this design. Anyway check it out and let me know if anyone else has done something like this.

Andy

Edited September 2, 201212 yr by Andy G

Looks good Andy! Do you have any close up pictures or videos of the variable pitch mechanism?

If that is the scale of the engines you are going to use for your propliner, that must be a big airplane!

Very nice! I haven't seen a variable pitch prop design yet, though I'd love to see some close-ups of the mechanism. Are you planning to add a linear actuator to motorize the pitching mechanism?

Here is a close up photo

Looks good Andy! Do you have any close up pictures or videos of the variable pitch mechanism?

If that is the scale of the engines you are going to use for your propliner, that must be a big airplane!

Thanks for that, ah the model has a 15cm diameter fuselage so yeah its quite a monster. Just taking a long time to develop due to its size. This propeller design has been holding up the wing development so hopefully things can speed up a bit now

So incredibly awesome! As a turboprop pilot (PW PT6) and not an engineer I could never have built that so well but at least I can appreciate it! Job well done!!!

Fantastic, the colours look good as well

Nice construction. I would love to see more pictures explaining how it works. It seems to me that there is a lot of resistance in the adjustment (This may be where you have modified a part?)...

And, of course it has been done before, but yours are more compact. The "Baby Twin Otter" is my favorite plane MOC of all times, and it has a well working, but quite clumsy, solution. I've also recently seen a couple of helicopter MOCs with good solutions. Among them this (one of the best ever helicopter MOCs), witch has the most compact solution I've seen yet on the tail rotor.

Hope you can pick up a few tips form these links. Good look with the rest of you gargantuan plane :)

-ED-

Always amazes me what people can build with Lego. PS: Use of TLG putty.