18oz TaylorCub E-2.....

[BrokenChild]

18-20 ounces finished and has a 50 inch wing with 370 inches of wing area and I need a motor for it but dont know enough about park flyers to pick a good slightly powerful scale like powerplant... and suggestions? Just motor size and gearbox ratio keeping me from flying

thanks

[Blackhawk]

My guess is that a 280BB geared around 4:1 with a 10 or 11x6 prop and 8x 550ma NIMH cells would work pretty good. A geared 400 would be a bit hotter and heavier. Does your weight include the motor, batteries, servos, esc or is it the airplane only? That would help us select a motor. If the plane only is 18 ounces, then a speed 400 or 480 might be better.

Pat Daily

[BrokenChild]

the taylor cub E-2 is 18-20 ounces finished weight, but with an .049 cox engine/7-3 prop, and it flew alright for such a light powered plane... I'm gussing it would be closer to a .10 powered plane after I figured the extra weight for the battery and speed controller.... would a 280 with a 4:1 gearbox and about a 10-6 prop pull a 30 ounce plane? Nothing fast, it is just a cub, but I'm always short on flying time due to the distance between me and the ''club flying feild'' and think it would be better to find a clear spot on the farm and have at it all day long... I say an extra ten ounces for the extra powerplant weight plus the speed control and the battery..... I built this one to handle more motor anyways.... 1/4"sq, double spruce spars are light for a 50 inch wing, so I built a little heavy. To heavy for an 049 anymore and I'm wanting Eflight this time...:D :D

[Dave Robelen]

Hi Brokenchild,
You are looking at a sp 400, probably a 6V version with a 2.33 gearbox. Hook this to a 500 mah 8 cell battery spinning a 9-5 prop and you might be in pretty good shape. The sp 280BB is good to 20-22 oz., but over that you would be pushing it. You might wint to download trhe free trial program Motocalc www.motocalc.com for more definitive answers. This is a handy tool for me and the program runs for free the first month.
Regards, Dave

[2NG]

400motor 6V prop. 9x6, compensate the weight, use AE batteries. Up dihedral 1/8 both sides. You will have yourself a nice, responsive, fast, and slow nice flyer.

[BrokenChild]

thanks for the replies. Sorry I wasnt thinking when I first posted this, but life is all down hill, and the night I posted this, I felt someone slipping away... but anyways, thanks for the replies, maybe my airplane hobby wont hurt like she does