Midwest .40 Corsair
08-09-2003, 01:43 AM
#1
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Midwest .40 Corsair
i need a little help/info. this kit comes with bellcranks (i have an older one i think) are the bellcranks a good idea, or should i mount servos in the wing? i never have liked the idea of bellcranks, but i have heard they are all right. what would anyone suggest?
Jeremy
Jeremy
08-09-2003, 09:50 AM
#2
Midwest .40 Corsair
Jeremy,
You will hear tales of both good and bad with bellcranks. I'm currently building a TF Corsair and didn't use bellcranks for the ailerons but wound up using them for the flaps. It's all about the quality of the hardware and installation. NO slop is key. I used Dubro bellcranks and a nylon threaded locknut to anchor the post screw then placed the bellcrank on top of the nut. That will eliminate loosening of the post and slop. Clevises not Z bends for the pushrods. If your not lined up (pushrod to servo arm) ball links solve that problem. Bellcranks work but you need to work at it
Pete
You will hear tales of both good and bad with bellcranks. I'm currently building a TF Corsair and didn't use bellcranks for the ailerons but wound up using them for the flaps. It's all about the quality of the hardware and installation. NO slop is key. I used Dubro bellcranks and a nylon threaded locknut to anchor the post screw then placed the bellcrank on top of the nut. That will eliminate loosening of the post and slop. Clevises not Z bends for the pushrods. If your not lined up (pushrod to servo arm) ball links solve that problem. Bellcranks work but you need to work at it
Pete
08-10-2003, 12:54 AM
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Midwest .40 Corsair
seeing as how i bought this partially completed, i think i am just going to take the bellcranks out then, i have no idea how they are installed. i will jsut take them out and mount the servos in the wing. thanks
jeremy
jeremy
08-10-2003, 12:57 PM
#4
Midwest .40 Corsair
I too have built Corsairs both ways, but will probably build most future Corsairs with 2 aileron servos. Both setups can weigh about the same, and have pros and cons. Biggest advantage to dual servos is simplicity: they are an easier installation and easier to maintain/ adjust. With the (low) cost of todays servos, cost should not be a factor. With a computer radio, it ia also easy to program aileron differential with 2 servos.
