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Motor for e-raptor 90

dwarnaar

Heliman

Key Largo , Florida united states

Hi, I have a Raptor 90 that I want to convert to electric. All I really want this heli to do is short simple forward flights and some hovering. My question is could this be achieved using a 6S setup like a stock align 650L motor or is going with a 4035 scorpion or similar on higher voltage absolutely necessary? I would imagine the 650L would burn out quickly if pushed hard on this size heli but as I said I am not asking it to do 3D or anything like it. Also , If this absolutely won't work what setup would you recomend for this type of flight? This is not my main heli so I would like to keep the cost as low as possible. I fly 450's and just want to get this in the air as a novelty.

01-19-2010 Over year old.
dwarnaar

Heliman

Key Largo , Florida united states

I ordered a Tonic-x Z70A 585 KV . I was hoping for some suggestions but I will get this fitted up and give it a try... Time to dust off the old milling machine and lathe.

01-23-2010 Over year old.
helinutz

Veteran

Bournemouth, Dorset, UK

I have been using that motor in a Logo 700 turning 710mm blades, and it was fine.
The Kv is really too high for the available gear ratio using mod 1.0 on the logo, but I'm guessing it will be better matched for the raptor.
how many teeth on the maingear and what headspeed are you looking at?

>>>>>I'm so broke, I cant even pay attention!<<<<<

01-23-2010 Over year old.
dwarnaar

Heliman

Key Largo , Florida united states

I have a pretty good mechanical background but these large electric helis are a bit new to me. I am learning as I go. I am not looking to build something with a lot of power, just want it to hover well and fly in more of a scale manner. I have read all I could find here on converting the raptor to electric. The kv rating on this motor seems similar to the motors that others have had good success with the raptor 90, maybe a slight bit higher. I was planning on trying to fly with 9s which would put head speed at about 1700 with the 95 tooth main gear(I think this is the largest available) and a 9 tooth pinion according to the calculator I was playing with. If I am way off with what I am trying here let me know. I look at this as a learning experience.

01-23-2010 Over year old.
helinutz

Veteran

Bournemouth, Dorset, UK

9 tooth pinion is going to be very small. Your putting a fair bit of power through it, and the wall is going to be quite thin to accomodate only 9 teeth.
Also flying on 9S may not be the best efficiency (The t-rex 600 on 6S worked the packs very hard and a lot of people found their packs didnt last long, those that went to a 10S setup found it a lot more suited)
To be quite honest, I would seriously consider going for a 500kv or less motor.
Something like the Scorpion 4025-400 or 4025-500.
The 400kv motor would allow you to go to a 13 tooth pinion on 10S or if you wanted to make a very efficient setup, you could opt for a 12S setup with 11 tooth pinion.
That would give you a usable rpm range of 1700-1900 and allow the use of slightly cheaper 6S packs in series which may give you better options for mounting.
With that small a main gear, you are quite restricted in choice of motors and pinions unless you want a silly headspeed.
Check out MrMel's headspeed calculator, its a brilliant tool and should be your first port of call when working out usable systems.

>>>>>I'm so broke, I cant even pay attention!<<<<<

01-23-2010 Over year old.
c54fun

Senior Heliman

Central Iowa

I am running a Scorpion 4035-500 on 12s on my Raptor 90. It is my favorite for fun flying.
Your Tonix-x motor should work ok also.
It is a good idea to support the upper part of the pinion. I tryed it without and was stripping gears. I then used the upper bearing to support the top of the pinion and it has lasted all summer.

Good luck.

01-23-2010 Over year old.
dwarnaar

Heliman

Key Largo , Florida united states

Thanks for the replies. I made a motor mount today that will fit both the tonic x and a scorpion. I am waiting for more parts right now. I will post some results when I get this thing going.

01-28-2010 Over year old.
AFjetmech

Heliman

Rocky Mount, N.C. USA

This thread is right on time. I have a Rap 90 in the TT Agusta 109 fuse. Not flying it anymore because of the tuning issues and smoke. Just not scale enough. So, I am going to convert it to electric as many here have done. I have read the threads but find much of this electrical jargon mildly confusing. Now, that being said, and my goal being only scale flying, I assume a setup like stated above would work well. My headspeed goal is around 1700 and I would like a decent flight time. This obviously will be a heavy heli also. One of my biggest questions is would 12s be much better than 10? I know that would help keep the amps down, but would it help with flight times as well? All info sent my way would be greatly appreciated.

01-28-2010 Over year old.
ady

Key Veteran

norfolk england

hows all the conversions going ? very interested

02-12-2010 Over year old.
dwarnaar

Heliman

Key Largo , Florida united states

I have the motor mounted. The tonic x z70A has a 5mm shaft so I used a 5mm coupler to attach a shaft that is supported at the other end by a bearing with a 5mm center fitted to the clutch mount. I used a century 9t 1.0 mod long pinion with a 95 tooth main gear. I made a 5mm slotted plate the same width as the frame spacers so it fit snug. I will try to post some photos later when I get a chance but it is done the same as some of the other conversions other people have shown on this forum. Nothing special. I now have to purchase an esc and some lipos to test fly it. Still not sure what esc and lipos I am going to try.

02-21-2010 Over year old.
Dr.Ben

rrProfessor

Richmond, VA, USA

Have you chosen 10s or 12s? 12s is the preferable of the two choices because it lowers the current demands on the battereies and the ESC and will sometimes allow for the use of smaller capacity packs for a given runtime.

The Castle Creations ICEHV80 will fulfill your requirements and give you built in logging software. Myself and other can also look at you logger data on our computers and tweak your set up if needed for best performance. It works incredibly well.

Ben Minor

Team Thunder Tiger Team Futaba Team Kontronik USA
Esprit Models Progressive RC

02-22-2010 Over year old.
dwarnaar

Heliman

Key Largo , Florida united states

12s and the castle creations esc mentioned will probably be the way I will go. Just looking over the specs the ice hv casle creations looks like the best for the price...

02-22-2010 Over year old.
AFjetmech

Heliman

Rocky Mount, N.C. USA

Here is my Scorpion 400 finally mounted.

03-05-2010 Over year old.
Heli143

Elite Veteran

Phenix City, AL

very clean conversion.

I am interested in doing a similar conversion,but would like to be able to use the clutch for a more scale-like spool up before the blades start turning.

what is your suggestion for an adaptor for the Raptor 60.
My buddy, Copterdoctor, converted my raptor 50 to electric with the clutch and I love it. But the 60 size is different so I am interested in your suggestion

Thanks in advance

Roy Mayoral

03-06-2010 Over year old.
AFjetmech

Heliman

Rocky Mount, N.C. USA

Wish I could help you with that. I am a total newcomer to these conversions and to large electrics in general. How is the clutch mounted to the motor on your 50? As far as spool up, I have the HV85 and from what I have read, it offers pretty good options on the spool up speed.

03-06-2010 Over year old.
PJRono

Key Veteran

Minnesota, Ya!

Castle's slow spool is very slow, and you get plenty of "whine" out of the motor and gearing.

If you skip me I can't play!

03-06-2010 Over year old.
Heli143

Elite Veteran

Phenix City, AL

my raptor 50 has an adaptor which mounts to the engine and the clutch shoes mount on the adaptor so it fits right back in like the nitro engine. The engine mount is a carbon plate with two cross bars which mount onto the side frames, clean and easy.

As far as spool, I have seen some electrics set up with a s.l.o.w spool up but in this case the spool comes up quick but the blades are not moving at all which really adds to the scale look.
Once it lifts, you hear the beautiful sound of blade slap

here is the link to the video of my conversion (completed by Copterdoctor).

http://www.youtube.com/watch?v=QRG8Y9aoYxs

Roy Mayoral

03-08-2010 Over year old.
AFjetmech

Heliman

Rocky Mount, N.C. USA

Pretty cool. I'd like to see some pictures of the motor mount and how the clutch is attached.

03-09-2010 Over year old.
Heli143

Elite Veteran

Phenix City, AL

here are pics of the conversion

Roy Mayoral

03-12-2010 Over year old.
AFjetmech

Heliman

Rocky Mount, N.C. USA

My conversion finally ready for some esc settings and flight testing.

03-20-2010 Over year old.
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Motor for e-raptor 90

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