Author Topic: Stretched Tutor (Read 916 times)

Horby · « **on:** September 27, 2013, 10:39:59 PM »

Hey guys,
I have a stretched original tutor that is using a silver LA.25 with a 9-4 @ 1100rpm, the lap times are 5.0 - 5.2sec.
I want to convert this plane to electric and I am thinking of using the E-Flight 10 with the recommended 10-5 prop.
I live at high altitudes and occasionally compete at sea level.
Can I get away with the E-Flight 10 or should I go to the E-Flight 15?

I am currently cutting my teeth with an E-Flight streak using a generic Turobjet (N3536-B) 1100KV 655Watt motor (60A esc) with a 9-6 standard APC prop.
So far my 1min tests have been promising but I want to use good stuff on my Tutor.
The generic tests I am doing is to see if the really cheap stuff works and for how long. Hopefully I will get some more and longer flights in this weekend.

But, can I get away with the E-Flight 10?

Thanks in advance guys.

Warren

William DeMauro · « **Reply #1 on:** September 28, 2013, 04:58:30 AM »

Maybe. What battery are you thinking of as the power 10 isn't really a 3 cell or a 4 cell motor but kind of falls in between both but mat be able to be propped to work? Do you have a projected finished weight? If you are going to be much over 40 oz then don't. If you are strictly thinking of a 4 cell then this equivalent cobra will be a better match http://www.rcdude.com/servlet/the-2055/Cobra-C-dsh-2814-fdsh-20-Brushless-Motor/Detail
This is the motor my son flew in his 41 oz UHP Gieskie Nobler at the Nats.

Horby · « **Reply #2 on:** September 28, 2013, 08:16:58 AM »

My plane currently is 42oz with motor and empty tank. I was thinking of using a 3s battery to keep costs down. Later once I have made the complete switch to electric I will start using different equipment as funds, equipment, and budget change.
Other planes I am looking to build/convert is the Primary Force and the ARF Nobler.

Cheers,
Warren

William DeMauro · « **Reply #3 on:** September 28, 2013, 11:48:35 AM »

Hi Warren,
You will find the cost of the batteries very similar (larger 3c vs smaller 4 cell)=approx. same eight and cost. Pick a set up and go with it. I bet a 4s 2500mah battery will be pretty much a match for the 3 planes you mentioned. That Cobra motor may fly them all providing that weight is kept down otherwise a power 15 for sure.
William

55chevr · « **Reply #4 on:** September 28, 2013, 01:47:57 PM »

I asked Will what set up would work on Flite Streak and he recommended 4 cell 2500 mah and it is right on the money. I had to slow it down a bit with the FM9 timer but it right on the money.

Joe

Horby · « **Reply #5 on:** September 28, 2013, 02:55:05 PM »

after doing some more MATH........ (who knew grade school would ever come in handy) I got the E-Flight 15. Now I need the ESC and 4S battery's. I was thinking of trying the Viper air series ESC, good bang for the buck and very well made.

Thanks for the guidance.

Cheers,
Warren

55chevr · « **Reply #6 on:** September 29, 2013, 05:33:24 PM »

Plan long term. ESC's don't wear out. Get the one that will serve you into the future

Curare · « **Reply #7 on:** October 01, 2013, 09:21:56 PM »

They don't wear out but they do occasionally pop if you have a prop strike, or stall the motor in some other exciting fashion.

Killing a speedy that way is one thing, but losing a model becuse the speedy farted out in an overhead eight is just painful.

Author Topic: Stretched Tutor (Read 916 times)

Horby

Stretched Tutor

William DeMauro

Re: Stretched Tutor

Horby

Re: Stretched Tutor

William DeMauro

Re: Stretched Tutor

55chevr

Re: Stretched Tutor

Horby

Re: Stretched Tutor

55chevr

Re: Stretched Tutor

Curare

Re: Stretched Tutor