dusty1966

Building a AW 60-90 Extra 300 and would like to install a DLE 20 in it,I am new to gas so can I use a Hobbico HydriMax 5C 6V 2000mAh NiMH AA Battery to power everything?
Also, will any unleaded gas work, does it matter if it contains Ethano, and what about a kill switch.

Thanks

Steve

phantomdriver

Use non-ethanol fuel and yes use some sort of ignition kill....Smartfly or something similar
You should isolate ignition battery from your reciever battery. 4.8 for ignition & 6.0 for reciever.
Do you have anyone at your field near by that can assist you in the setup?

dusty1966

Thanks for your help,no, all the guys I fly with, fly glow.

Steve

fxstb

If you install a servo to operate the choke it can also be use to stop the engine in flight.

dusty1966

Dont understand,why would you want to stop the engine in flight?

Jezmo

A throttle servo failure or throttle breakage causes a runaway plane where the ability to kill the engine in flight can get you safely back on the ground.

dusty1966

So if I install a thottle servo to kill the engine do I need a kill switch as well?One 4.8Battery for ignition & one 6.0 for reciever,does this mean I need two switches?

fxstb

You need 1 swicth for ignition and 1 for receiver when using 2 sources of power. You may not use a remote kill swicth for ignition if you have a servo on the throttle, just go idle - put the choke on with the servo / radio (this is when flying if you loose control or on the ground) and the engine will stop.

You may also use this kind of swicth (one of them) if you dont want to make 2 holes in your fuselage, they also have one with a fuel dot on it

dusty1966

Thanks for your help,with glow engines as you know you can use thottle cut on the TX to shut the motor,is this not possible with gas engines?
Also I hear you should not use gas with ethanol,so what if you can't find any ethanol free gas?

Thanks Again

Mark Dennis

My Feedback: (4)

Dusty,

You can use gas with ethanol in it, its almost impossible not to have some ethanol in the fuel these days.

As for a way to kill the motor, your throttle servo will work just fine, you want to keep this plane light so the less items you put in the better.

For ignition power you have a few options, if you are using a 2.4ghz radio you can use one battery through one switch. If you are on 72 or don't feel comfortable using one battery, I would recomend a 600mah 4.8 volt nimh
through a mpi switch. This is the lightest battery available that will run the ignition for 3-4 flights.

Hope this gets you going in a good direction,
Mark

dusty1966

Thanks Mark,so I don't need a kill switch?

Mark Dennis

My Feedback: (4)

Dusty,
There is nothing that says you need to run one. You will just have to kill the motor with the throttle servo, just like you've done with your glow planes.

Mark

fxstb

I may also need some help with this one Mark. I always thought that de lower you can go on a gas engine carb with the throttle servo is idle. Do you have to set the idle screw to the point that the engine will stop and after that trim the servo so it can idle?

Mark Dennis

My Feedback: (4)

Most carbs allow you to fully close the throttle butterfly, I know that one on the 20 will fully close.

Mark

dusty1966

OK Mark I have to place a order with you guys next week to complete my extra 300,I have the DLE 20 and Battery packs,heres what I have to order,am I missing anything?
What are Fuel Line Barbs used for and do I need them?
And I heard that the stock DLE spark plugs are crap,any truth to this ,if so what plug to replace it with.


.60 -.90 Extra 260/300 DLE20cc Installation Kit
MPI Charge Switch with LED 2 each
Aeroworks Fuel Line Installation Kit
Rcexl Opto Gas Engine Kill Switch
Aeroworks Gas Fuel Tank 8 oz
2.5 Gallon Hand Crank Gas Fuel System

Thanks

partisan

My Feedback: (1)

I used that exact switch on my extra 300 (not an AW but a Great Planes kit) I had a DLE 20 on it, the switch on the reciever failed, leaving the ignition on and no control of the plane. I got to watch it fly itself into the ground (luckly I could rebuild it). I would strongly recommend modifying the switches by soldering all the blacks together off the switch and soldering the reds across both terminals. After doing this, I wouldnt charge both batteries at once though.

I was also using an optical kill and a 4.8v on the ignition, 6v on the reciever. I switched to an "IBEC" and am now running two 6v batteries. If one switch fails, the other battery can handle all the load. They are 2000 mah each.


IBEC Link
http://www.tech-aero.net/ultra-ibec

I didn't trust the cheap switches used in that thing anymore so i went to radio shack and got two new ones, model number 275-636

http://www.radioshack.com/product/in...ductId=2102475