Ok guys im getting out of nitro and I want to set up a screamin demon electric!! My question is what would be the best set up to push 200 mph or 175??? I have emailed some motor manufactures and they have given me setup that will do a 100 but i want twice that if I can.

Thanks for your help guys

Rob

The Demon and dust are going to be limited by the size packs you can fit in it. What do you know about electrics now? What electric set ups have you done? Where are you in set up, building, and flying skills.

Well I have done electrics from micro up to a 40 size 3D bird!! This will be my first electric speed set-up. I have a watt meter that goes up to 130 amps. I would say im intermediate in the electric knowledge. As far as building and flying I would say im advanced. I have 1 demon now that I just got to put servos in. I have another kit on its way. I have also built 3 dimond dust for other people. I'm not to worried about the pack size cause I can build a cowl to house the pack. I will also need the cowl to help with cooling the motor and ESC.


This is the set up that Castle Creations recommended
Neu 1910/1Y 1050 kv, with an ICE 100, 8x6 prop, and a minimum 6S 4000mah 40C battery, you should see over 100mph

You'll need 3000+ watts to get to the speed you want. The 1910 is good for 2400w burst on paper but you can usually push them a little harder. Putting the 1910/1Y on 8S with a 8x8 carbon prop will get you close to where you want to go. But it's pushing all the components pretty hard, 120 amps, 3000 watts...

Going to a 1915/1Y on 12S with the 8x8 is better, 80A and 3250w. We're getting the amps down and increasing watts and increasing prop speed. At this point you can use pretty much off the shelf stuff like the ICE HV ESC and 2 6S packs in series. Using a 2650mA 40C pack is good for 100+ amps and they are pretty thin so you can hide them easy back to back. They are 1 3/8" thick and also are fairly light.

Going to a bigger Neu motor would be better but then yo uhave to use 14S and higher which is harder to do. Or you could contact Steve and ask him to wind you a 1917 or 1920 at a higher kV.

What does Neu's #'s mean on their motors....ex: 1105/1.5Y/3.2
Thanks

Really Steve should be the one to answer this but I think this is correct. The first is the size of the can but there are some can sizes that have different numbers so there is more to it than that. The first two numbers are diameter but I'm not sure if it's exactly to inches, like the 11xx is about 1.1 inch in diameter, same with the last two numbers being length. The 1.5Y is the number of windings and configuration of the winging, wye or D. The last set for what you have is additional info, that motor has a 3.2mm shaft I beleive. It can also mean the motor has a gear box with the numbers meaning the gear ratio.

Evan ,Have you run any hot electric motors flat out without bursts like a nitro engine? Its the burst flying that interupts fast speed for all the flight i want to overcome

Most sport speed stuff is gentle cooling down cruising with short 2-5 seconds of bursts to speed. Racing, pylon or otherwise is usually trottle on for long periods. Very different in how this effects motors, ESCs, and batterys. For sport we can take burst numbers and even exceed them for the short burst but take that same plane and do 30 seconds of high speed and you'll have alot of problems and probably smoke and fire...

Heat sinks seem a must with good aircooling. I take it you mean its all about the windings in the motor smokin from too much residual heat and not the speed controller if its capable of enough amps.?

A set up that could fly flat out at 150mph plus for 5mins at full throttle is what i want.

Yep thats the only thing I don't like about lekkies, the throttle management issue. I like full throttle the whole flight till I run out of juice, but you can't seem to do that with them.[]

You can but you have to select components that can take it, larger motor, larger ESC with a heat sink, and bigger, higher C battery. There is similar concern with fuel motors too. There are motors that you can prop to higer rpms and lean ou t for short burst of really wild speed but if you left them open for longer runs you'd melt them.


Let me throw an example out. My Cyclone with a 1506 neu, 80 CC ESC, and Polyquest 2000mA 5S 30C packs. It's prop'ed with a APC 4.75x4.75 and I've done a 229.9mph diving pass with it. Everything works real good for the short burst and the hottest component is the battery, 2000ma times 30C in 60 amps and I'm pulling 80a bursts. If I go and get crazy and do a few full power laps the motor overheats, the ESC is hot, and the battery puffs to the point of trying to push the wing off the fuse. Not good for the plane or the equipment. I could go to a 1509 and a 2200mA 40C battery and it would run cooler for the lap type flying but it would also be harder to fit and much heavier.

229!! That 4.7x4.7 prop is what I ran on the funjet with 4s 2w-20 but only managed 125!! Must be slippery airframe and or extra rpm with the extra cell. About 68k rpm??, Have you tacked that sucker?

On board mini water cooled radiators next if air isn't good enough to keep the motor cool.!!

Ha, puffy lipo pushes the wings off.

I'm still learning when it comes to E-power Evan. Thanks for the imput.

Have you flown any f5d yet Smokin?

I am thinking the same, speed but probably a stock Rifle. 120 is enough for now, I am not worried about filming it, I think keeping it in sight will be challenging enough. Have you seen the profile coming and going on these planes? a dot!

Nah but I'm flying this still and its freaking fast its called the ESCAPE, its a composite mini hotliner, Evan flys one too, its the fastest plane I've ever flown and I've had a chance to fly a turbine also this summer, its still faster.
http://www.rcuniverse.com/forum/m_9790425/tm.htm
I am putting a NEU 1110/1Y motor in it next, its on its way, I'll have to upgrade my ESC also to handle it, maybe you could help me out here a little EVAN on this one.

You've seen my post at the other place... You'll be very happy... 4.1x4.1 with a good 3S 2200. 165mph all day long. Gets small fast. The most amazing thing is going by at speed cut the throttle and point it up it goes out of sight off throttle, amazing...

Esc size?

Castle Phoenix 45 or similar. Turnigy 60 Plush... Something that can handle 40-45a continuous.

Ok I'm already using a Turnigy plush 60.
Thanks

Just been looking at that escape, looks pretty sweet. How have you mounted the elevator servo? In fin, using snake?


This little rocket is cruceaform tail, similar.

[link]http://www.soaringusa.com/products/product.htm?product_id=16783&category_id=265[/link]

I mounted the elevator servo right in the tail vert fin, using a HS 65HB micro, its hidden well. Yeah all those little composite pylon racers from what I hear go like snot.
Me likes!

Ahh in the tail, thats better, short link. I don't like snakes for t tails.

You got pic?

Yesterday nearly bought a damaged voodoo. Fin broken and wing tip snapped. Could have repaired it. But really want light tips.

Does yours roll fast? Like a blurrrrrrrrrrrrrr??

When is your hotter motor coming? Hope you can break 200mph ad post vid.

I've got to try one of these tiny terrors, They do look like they satisfy speed junkies.!!

I have mine just aft of the wing hold down bolt and a snake going aft. I also have HS65's, non metal geared...

The 30" are alot different than the Escape which is half way between a S400 and a F5D. I've had good luck with the Sprints from Esprit... Same set up as my Escape, Mega 16/15/2.

http://www.espritmodel.com/index.asp...OD&ProdID=2180

Evan, how do overcome any flexing in the snake ? Obviously this is not an issue for you. I just dont want to pull up and the outer snake moves inside the fin as it arcs around.

Escape quicker than sprint or about the same?