electric conversion.
 

last summer I did a JHH F-86 build in the non electric jet forum and been very busy and have not got to maiden it yet,(sorry guy's) i know you have been waiting for some time now. I have been gaining a lot of interest in EDF and was wondering if the Scorpion HK-4035-630 motor would fly this F-86 and old Yeller (y/a F-16) with athority, im going to convert them both, the F-16 with ramtech conversion and F-86 with viojet or maybe with my old turbax III unit. both on at least 10s 4000 or5000mha, I have a 60 amp esc and im not sure it would be enough (someone chime in here) Im willing to part with the kb.72 and the viojet power plant thats in the f-86 to help fund my batteries and electric motors if anyone is interested for a reasonable price.also have a brand new viojet fan unit i'll part with if I use the turbax, its in storage so the dust will be free lol.. also two pico.80's and header pipes for them, one pico needs a carb the other runs great its on the ramtech right now. a K&B.82 but has a homemade connection rod a friend machined for me at his work not sure how it would hold up due to its aluminum although I have ran it up once and it seemed to be fine. ive tried to order a connecting rod several time with so success.
on the ejf.com website I believe there is an old byron f-16 that fly's with this Scorpion HK-4035-630 although im thinking its with the bryon fan (i think) which two set would be the better , two or Rhino 4000mAh 6S2P 25C Lipoly Pack , two Turnigy 5000mAh 5S 25C Lipo Pack or two ZIPPY Flightmax 5000mAh 6S1P 25C

RE: electric conversion.
 

Hello. I did an electric conversion on a byron and a yellow F16. I used the EVF in both set ups and it has great performance. Even my old byron F16 with no inlet ducting and all that drag would do 135MPH straight and level. The yellow was a guided missile at half throttle it was very nice but I lost radio contact with it before I was able to do any speed runs but im currently working on a new one. The byron fan works for EDF but its not very efficient and its slow with great static thrust.You might want to try a 4010 EVF on 10cells and then not have to do any experimenting and save some money.

RE: electric conversion.
 

What kind of sound did you get with the EVF?
The the fan units i will be using are the same ICDF units modified for electric. I do know that stumax along with performance sounds awesome. and good performance with the dyn-E-max conversion and sound is also great as to my ramtech are very similar. all great performers viojet/ramtech and turbax. I need to see some more vids of turbax vs. viojet, (note: not the EVF but a ICDF unit modified for electric. I thought the fan/motor combo mention in my 1st post had a very good sound. at www.ejf.com look under scorpion motors

RE: electric conversion.
 

here is an old video of my byron F16. This is whith no ducting so it sounds a little different. When I had it in my yellow F16 with ducting it had a much better sound.

http://www.youtube.com/watch?v=MDxRYxPJZ2o

For sound the STUmax is the best. For performance sound and endurance EVF. The dynamax does sound good also I agree.

RE: electric conversion.
 

"...a, I have a 60 amp esc and im not sure it would be enough (someone chime in here)..."

You ESC will be worthless in your proposed setup. Think in terms of 100~110 amp capacity

RE: electric conversion.
 

well I agree about the esc, I just had it on hand for a 70mm jet. ok let talk batteries.
the batteries mention above are 25c rated , will that be enough?
example. Rhino 4000mAh 6S2P 25C Lipoly, < two battery pack per jet, would this be 12s 25c at 4000 mah ?

RE: electric conversion.
 

Iw ould try for 30C I guess 25C might get it done but I think I would try for 5000MAH batts. You can go for either a high power set up like I did on my yellow or a light set up. Thier is a guy using this set up on his yellow F16 its very light and flys well. Here is his video also.

10S
Lehener 2250 12 KV 986
DS 75 110mm fan

http://www.youtube.com/watch?v=W6UZmWCGe9w

RE: electric conversion.
 

I think i'll try this setup .ZIPPY Flightmax 5000mAh 6S1P 25C x2 and a 110amp esc and the Scorpion HK-4035-630 motor
and hope for the best, Im on a very tight budget and barely afford these batteries.
havent got a price check on a 110 esc yet . both batteries under $200 bucks , Scorpion HK-4035-630 motor $169.bucks (this motor flew the larger byron f16 with ease so im figuring it will have enough power to fly my yellow. if all else I know it will fly the smaller JHH f86 and should be a rocked with it.

RE: electric conversion.
 

im new to this electric stuff so please excuse my ignorance , ZIPPY Flightmax 5000mAh 6S1P 25C x2 will be 12s 5000mAH right?

RE: electric conversion.
 

If you wire them in series, the assembly will be 12Sx5000. At 25C, the maximum current will be 25 x5 = 125 amps

Wire them in parallel, the assembly will be 6Sx10000. At 25C, the maximum current will be 25 x 10 = 250 amps

I am using the Zippy packs and I think they are every bit as good as any of the higher priced packs.

RE: electric conversion.
 

so to get the best performance I need to run this setup like fig;1 ?

RE: electric conversion.
 

please take note.: Im not using a new edf unit, im converting an icdf unit over to edf ( ramtech, turbax or viojett)

RE: electric conversion.
 

Fig, 2 results in 12S

RE: electric conversion.
 

ahh now i understand why my two 7.4v 2s packs wouldnt work on a 70mm project.. thanks. I had a zippy 14.8v 4s pack 20c new but it would only charge 1 of the 4 cells so instead of waiting i drove a half hour away to find one at the nearest hobby shop and could only find the 7.4v 2s heli batteries so i bought two , I have to try theses in series and see what happens. Thanks again

RE: electric conversion.
 

ok this is what i'll go with. ZIPPY Flightmax 5000mAh 6S1P 25C x2, when I go to purchase I'll see if I have the extra chash to get the 30c will the 110 esc be enough for the 30c, if so then i'll know its enough for the 25c, (hoping the 25c will have good performance in case im short on cash when I go to purchase) has anyone flown 90sized jets on 25c setup?
I dont thinkk i'll run into lack of power for the jhh f86 with this but was concerned with the yellow f16 due to its a bit larger,
the F86 came in at 10lbs dry(no fuel) with the kb72viojet powerplant so minus power plant and add 12s setup im thinking should be around the same auw.
yellow F-16 came in at 11.5 lbs when i installed the 1st powerplant which was the kb82 turbaxIII which is a bit heavier the the powerplant in it now (picco 80/ramtech) not much of a difference between the two with the auw.
any and all help is appreciated already and in advance for new comments.

RE: electric conversion.
 

another question is what volt shoud i use. 11.1 /14.8 / 18v or above etc; ?

RE: electric conversion.
 

anyone used these?
TURNIGY Sentilon100A HV 5-12S / hexTronik PRO 120A BESC w/ PC Programmability

RE: electric conversion.
 

I had the CC110 in my EVF and was using 40C batts so if you get a quality ESC you can handle the power but the 4oCs was hard on the ESC so 30C would be fine on a CC110. I dont know anything about that turnigy one. Next my yellow F16 flew like a turbine on EDF and it weighed in at 16 pounds so dont be scared of the weight. You could go 2 ways with it 10cell set up or 12 cell. I used 2 18.5 5cell battery packs and then a 2 cell 7.4 to make it 12 cell. You can use 2 6cells if you wanted but make sure you can get them to fit its tight in the yellow. I had to install one 5 cell and the 2 cell behind the cockpit on top of the intake then the other 5 cell was installed under the thrust tube on the bottom of the fuselage behind the main gear. It balanced perfect this way but I was using 4.5 pounds in just battery. You might be able to move your fan back and install all the batts behind the cockpit but you will still have a hard time getting it not to be nose heavy.

RE: electric conversion.
 

Skywalker, how did this setup for the F-86 turn out?

RE: electric conversion.
 

dbsonic : I haven't placed the order for the batt/esc yet, been playing around with a small park size jet, saving money to order it all at once, I know it will drive me crazy getting goodies one at a time.

RE: electric conversion.
 

my fun for now.

RE: electric conversion.
 

Just a couple small points. When you're doing your budget for this project, don't forget to include some $$ for good quality wire. I can't emphasize enough here, don't skimp on the wire gauge or quality! It's the weakest link, nobody thinks of it, but when you're trying to get 80-90 amps from your batteries to your ESC, you don't want to be converting that to heat in the wires. And when you do order your wire, make sure you get connectors big enough to handle the current as well. Deans ultra are great, I'm using them on a byron conversion on a TGA Mig 29 that's pulling around 90 amps at full throttle. But it's a real bear to solder them to very large gauge wire. I would reccomend you go with large bullet connectors, much easier to solder and there's no worries about the amps they're handling.
One other thing, you do need to run your batteries in series. The average motor used in a large EDF conversion is in the 600 KV range, meaning it will generate around 600 rpm for each volt you apply to it. To get up into the 22k range your fan needs to generate usable thrust, you need to feed that motor 40-50 volts.
Having said all that, I'm sure you're gonna love the conversion. Once you get a good reliable power setup and good batteries, you can kiss tweaking the needle goodbye, clunky starting wands, the earsplitting shriek of a glow engine at 20+k rpms, and your buddies are gonna thank you for not smoking them out. Plus it's nice to be able to actually throttle back inflight without worrying if the motor will conk our when you throttle back up, and instant thrust when you want it....

A

RE: electric conversion.
 

I have two of the turnigy 100 and had a hextronix 120, the turnigy are great, they hold up well and keep up at high RPM but the Hextronix is only 6S capable and too slow for EDFs. You can buy the Turnigy from the US ware house and get it faster with cheaper shipping, although the price is higher, after the shipping is figured in the price is about the same.

Just a note, in case you didn't already know, Don't extend the battery wires if you can help it and not much if at all; It is much better to extend the motor wires just keep the lengths identical. If you have to extend the battery wires you'll need to add capacitors to the esc end.

RE: electric conversion.
 

Good point Mark, I will deff keep that in mind to keep them equal length ,
a65l Also a good point on the wire guage, I did infact have that in thought, but all true a lot of people forget that, as i have in the past. Thanks guys, great info for evreyone.

RE: electric conversion.
 

found turnegy5000mah6s1p for $71bucks .going to purchase two of these each for old yeller and jhh f86. question is how long can these stay in storage brand new when neve r having the first charge?