Originally Posted by Truckracer

Regarding ignition voltage, note whether your ignition is HV only as some are coming that way now. Depending on whether you are using HV on your receiver, you may not be able to power the ignition from the receiver with the Tech Aero. Even if you are using HV on the receiver, you may have to use the new HV Tech Aero to supply enough voltage to your ignition. Yes, this is a new development with EME ignitions as they use to be 6V to 12V but new ones are now coming labeled 7.4 to 12V. Note which one you have to know what you will have to use for ignition power.

I talked to my contacts in China about this. The EME CDI is made by Rcexl. My contact talked to Rcexl about this issue and I was told that this CDI will work with a Li-Fe 6.6V pack. Yet to try mine. Flat out doing other stuff.


Cheers
Grossy

Mine says 6-12v. Planning to run a Tech aero ibec off 2s lipo.

I ran a 2S LiPo with no problems when I had mine.

hey guys im looking at a used eme 70 and would like to know if anyone could share the measurement across the front of the mufflers outer edge , I m trying to see if the stock mufflers will fit inside a 3rd scale balsa usa cub cowling without major hacking ,, thanks in advance CB

http://www.milehighrc.com/Manuals/EME70%20dimension.pdf

Originally Posted by Toothata540

http://www.milehighrc.com/Manuals/EME70%20dimension.pdf

thanks I previously viewed that on the mile high website but i'm looking for the dimensions from the outer edge of the front of the mufflers themselves not the exhaust ports

Can anyone post the electric start setup. How to start with choke, and how the controller works with the radio. Wiring setup and start sequence.

Thanks

TB

Originally Posted by tony Builder

Can anyone post the electric start setup. How to start with choke, and how the controller works with the radio. Wiring setup and start sequence.

Thanks

TB

It is a very good easy setup. I used the recommended controller from Mile High. Plug the controller into a spare rx channel. I assigned the pusbutton (Spektrum Dx 18) to this channel. The controller has xt90 connections. Using a 3s 1300 lipo for battery. Make a xt 90 plug with a pos and neg lead to go to the starter motor. Mount the batt and controller appropriate to your model.
Start sequence is the same as any. Close the choke, ignition on, hit the button and spin it until the motor pops. Open the choke and hit the button until it starts. It will spin the motor very quickly.

A question for the group-- What's the largest diameter prop that I can use with the EME 70?

I haven't flown or built anything using wet fuel in at least 20 years having converted to electric. Even my 1/4 scale stuff is electric. I'm just about ready to cover a 1/3 scale Fokker DVIII and I'm considering gas instead of electric. I was a little envious as few weekends back at Rhinebeck as Adam Liley and Ken Hall were chasing each other around for 15 or 20 minutes with their 1/3 DVIII and Pup and I was only getting 8-10 minutes with my DVII. I was also impressed with Adam's smoke set up.

How close can I get to a 30" prop with the EME 70? It looks like everyone runs a 24" prop on this engine.

Thanks

I doubt you could use 30", visit milehighrc.com for engine recommended props

Originally Posted by CarreraGTSCS

A question for the group-- What's the largest diameter prop that I can use with the EME 70?

I haven't flown or built anything using wet fuel in at least 20 years having converted to electric. Even my 1/4 scale stuff is electric. I'm just about ready to cover a 1/3 scale Fokker DVIII and I'm considering gas instead of electric. I was a little envious as few weekends back at Rhinebeck as Adam Liley and Ken Hall were chasing each other around for 15 or 20 minutes with their 1/3 DVIII and Pup and I was only getting 8-10 minutes with my DVII. I was also impressed with Adam's smoke set up.

How close can I get to a 30" prop with the EME 70? It looks like everyone runs a 24" prop on this engine.

Thanks

24, maybe 25" props.

You could run a 25x8. To get a bigger diameter you might find a 26x6 but I’m not aware of anyone making one that size. The only way to get to 30”
Would be some kind of gear reduction. I don’t know if one for the EME 70. You’d be looking at something custom I think.

A more practical answer might be to go to a bigger engine or a 4 stroke.

Originally Posted by dshriver

You could run a 25x8. To get a bigger diameter you might find a 26x6 but I’m not aware of anyone making one that size. The only way to get to 30”
Would be some kind of gear reduction. I don’t know if one for the EME 70. You’d be looking at something custom I think.

A more practical answer might be to go to a bigger engine or a 4 stroke.

I agree. My other thought was to go with an EME 120, another engine with a great reputation, with the ability to swing a bigger prop. MHRC's site shows a 29x10 in the prop size range spec'd for the 120. That'll do I think. Only issue is that it is way, way more engine than a 25 lb scale aircraft needs. Will these engines tolerate flying at half or less throttle settings for long periods without issue?

Originally Posted by closetguy

just looking at the pictures,the needles look like a pain to get to.

I have no problems getting a screwdriver straight on the needles with stock mufflers.

Originally Posted by Threepete

I have no problems getting a screwdriver straight on the needles with stock mufflers.

^^^^^^^^^^