gubbs3

My Feedback: (1)

I bought a MDS .58 yesterday and broke it in today with an APC 11 x 6. It is running great and I got in a few flights with it on my TT profile Extra. I can hover the rather heavy plane at a little less than WOT with the 11 x 6 and its still very rich (just lean of 4-cycling). What prop will be good for this engine? I'm asking because I will need to order the props since my lhs has a limited selection. I was thinking 12-12.5 x 4 or 13 x 4.

BTW - The engine does run great. Perfect idle, and starts with one back flip. Only drawback is it won't die. I have to hold my finger on the carb for 5+ seconds before it quits. Does anyone know where the leak is that causes this?

w8ye

My Feedback: (16)

Props generally in the range of 11-7, 12-5, 13-4 should be Ok. Enjoy your engine. A lot of it depends on which one you like. For hoovering, the larger diameter - lower pitch props are best. However, you want to keep your rpm's up too.

Jim

Cactus.

My Feedback: (1)

the leak?
you mean all the leaks....
step one, remove main neddel and place 1/4 of fuel tubing over it, screw back in and slide 1/2 the tubing over the needle body.
step two, remove the pinch bolt, smear gasket sealent around the carb body, and on the pinch bolt hole.
if you can remove the idle needle and smear some gsealent on the threads,.
this should cure enough of the leaks to cut the engine.
failing all that, fit a 6x4 prop and laugh as it blows up as we did ( vid on www.rcflyers.fsnet.co.uk )

GalenB

My Feedback: (18)

I used a 13X4W APC with great results on my MDS .58. Lots of thrust!

gubbs3

My Feedback: (1)

Thanks for the input guys. I picked up a 12 x 5 Zinger today and got six solid flights in. It will hover at a little over half throttle and pull out with authority at full. It will do fine until I order an APC 13 x 4w.

mscj-RCU

My Feedback: (3)

what kind of rpm's do you get with the 13x4? Mine pulls 12900 on an apc 11.5x4 and 11900 on a 12.25x3.75...always in the quest for more thrust.