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e-Electric Conversions > eletric conversion for Raptor30?
 
 
Islander
Heliman
Location: Stanford, CA

My Posts This: Topic  Forum		I am seriously looking for electric conversion for my Raptor since I got addicted by my little electril plank. Do you guys know the kit?
08-31-2004 Over year old.
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parabellum
Heliman
Location:

My Posts This: Topic  Forum		http://www.electraflight.com/


they sell kits, but you could make your own conversion relatively easily.


there are plenty of infromation on this forum and also on www.rcgroups.com for conversion of raptors.

the biggest problem is getting right pinion/maingear raito
for your motor.

so select which motor you will be using, then you can do some
calculation to find what size main and pinion gear you will be needing.
08-31-2004 Over year old.
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Angelos
Key Veteran
Location: nr Oxford, OX11, UK

My Posts This: Topic  Forum		I did it the oposite way... I used a 9T logo gear that meshes ok with the 85T Raptor main gear. Then I found a motor to match that which was the Actro 24-3. This is for around 1800-1850 RPM head speed and two 4s 5000mAh lipo packs.
09-16-2004 Over year old.
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pwkpete
Veteran
Location: Pewaukee, WI, USA

My Posts This: Topic  Forum		First off, you will get better results with a 50 sized machine. (Disk loading is high on the 30)

The CCPM kit that Electraflight makes is very nice and helps drop a little weight off the machine. It isn't really necessary though, nor is the motor mount kit, unless you don't want to take a little time and make your own. Al's kit makes it easy to mount inrunner style motors, and with the larger gear he supplies, it allows them to run at more efficient RPM's.

The Actros that Angelos mentions are great for conversions. They install easily and have great power. I run 24-4's with 8s3p, 10T (Mikado)/86T and get 2000RPM hovering, tached. Great power, easy to build. The trick is to keep them light for best performance, I use the Electraflight CCPM kit to shave off a little weight. Mine are 7.9lbs RTF, but the extra ~.25lb from not using the CCPM kit isn't a real big deal...

My Rappe's:
http://69.128.16.233/forth_stage_album.php?albid=MTI2

Good luck, and have fun!
09-16-2004 Over year old.
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Angelos
Key Veteran
Location: nr Oxford, OX11, UK

My Posts This: Topic  Forum		pwkpete,
does your actro get very hot? I can't even touch mine after 30 seconds or running it.
09-17-2004 Over year old.
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pwkpete
Veteran
Location: Pewaukee, WI, USA

My Posts This: Topic  Forum		Angelos,

Nope, the hottest I've seen on both my setups is 147, measured through the opening of the can into the windings. The can stays in the 130's and batteries are always between 120 and 130.

What are your battery/ESC temperatures? What ESC and what % throttle? You have a temp gun?

-eP
09-17-2004 Over year old.
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Angelos
Key Veteran
Location: nr Oxford, OX11, UK

My Posts This: Topic  Forum		pwkpete,

Mine is an Actro 24-3, Schulze future-32.55 controller and 8s2p Li-Po. Don't know the throttle position as the speed controller takes care of that. I run it in governor mode.

I think the voltage may be slightly high with the 8s pack since that initially gives 4.15V * 8 = 33.2V when the pack is full but drops to around 29V after about a minute. The motor is rated up to 24 NiCD cells which is a couple of volts less. Your views will be appreciated.

I'll try to measure temperatures over the weekend.

-Angelos
09-17-2004 Over year old.
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ScotY
Senior Heliman
Location: Honolulu, HI

My Posts This: Topic  Forum		Angelos,

Which adapter are you using on your motor? Is it the type where you fit your own 5mm shaft, secured with a setscrew?
09-18-2004 Over year old.
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pwkpete
Veteran
Location: Pewaukee, WI, USA

My Posts This: Topic  Forum		Angelos,

Have you tried putting the #'s in the spreadsheet? (http://www.rcgroups.com/forums/showthread.php?t=232166)

I would go for the 8T and close to 95-100% operation. I used that with the 24-3 and the temps seemed comparable to what I see now. I never used the Schulze and I don't use governor mode in my ESC.

Scot, what were you running with the 24-3?
09-18-2004 Over year old.
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ScotY
Senior Heliman
Location: Honolulu, HI

My Posts This: Topic  Forum		Hey Pete,

I don't really remember what my settings were but I did run the 24-3 on 7s and 8s. The rpm was quite high on 8s. I used some combination of stock Raptor gearing and straight line throttle curves (essentially 100% across).

The reason I asked about the shaft adapter is because, if it were a situation where he was limiting the rpm too much (inadvertently by use of the governor), it would be the controller that would heat up quick. Unless the rpm was really low, I don't think the motor would get too hot to touch within 30 seconds. Of course, I've been known to be wrong!

I screwed up my 24-4 by allowing the shaft to sit too low in the adaptor. After a gear swap, I allowed the shaft to come in contact with the motor's output "shaft." It's not intuitive (at least to my small brain) that the shaft (the one on the motor that does not stick out past the bearing) must not come in contact with the 5mm shaft that goes in the adaptor (the shaft the pinion is on). If they touch, they will rub and cause the motor to get hot very quickly! Luckily, my motor still works fine but the top bearing sure looks like it could use a replacement.
09-18-2004 Over year old.
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Angelos
Key Veteran
Location: nr Oxford, OX11, UK

My Posts This: Topic  Forum
Quote 
I screwed up my 24-4 by allowing the shaft to sit too low in the adaptor.


Well... looks like the heat on mine was coming from the same source! Likely I didn't do any flights like that. Just a few test runs in the house. The inner shaft of the bearing is a bit worn on the top but the bearing still seems ok.
09-25-2004 Over year old.
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ScotY
Senior Heliman
Location: Honolulu, HI

My Posts This: Topic  Forum		Cool...glad you found the problem. My motor looks the same...shaft kinda screwed up on the end but it still works fine.
09-25-2004 Over year old.
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QCM
Heliman
Location: Scotland

My Posts This: Topic  Forum		Well Islander, I took a standard raptor 30, put on carbon blades and a carbon tail boom, plugged in an actro 24/4, jeti 77 amp controller, lithium monitor and an ultimate bec. I changed the pinion and main gear to the raptor 50 items (10t pinion and 85t main gear). The lipos are two 4s3p 6 amp thunder power packs (14.8v each 29.6v total). The whole lot weighs in at 7.2 pounds.

At 100% rpm on the motor I get 1880 and performes very well. It isn't blistering power that you would get from a TT39 engine, but it is very respectable, not much noise and no mess! I get 24 minutes of hovering and lazy eights etc, seems to be the norm after 3 outings. I haven't taken it out in to the circuit yet, but I am sure it will be fine when I do, as I am still checking endurance at the moment and setting up the pitch curves.

I am going to upgrade it to the 50 sized blades and boom, as my other heli an X-Cell gas, is much smoother.

So they work fine
10-01-2004 Over year old.
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pwkpete
Veteran
Location: Pewaukee, WI, USA

My Posts This: Topic  Forum		Gen 1 packs? Try adjusting the freq/timing of the controller, you may get some more RPM...
10-01-2004 Over year old.
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QCM
Heliman
Location: Scotland

My Posts This: Topic  Forum		I believe they are the new ones, got them about two months ago and they now come with charge protection circuits installed.

The ESC timing is set as recommended for the actro, but I will take another look
10-01-2004 Over year old.
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pwkpete
Veteran
Location: Pewaukee, WI, USA

My Posts This: Topic  Forum		Hmmm, I've been tached at 2k RPM hovering on both machines. I use the gen'2s as well. ESCs I've tried are: hacker 48-03 heli/84-3 heli (soft start)/48-O heli

-P
10-01-2004 Over year old.
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Islander
Heliman
Location: Stanford, CA

My Posts This: Topic  Forum		oooops!
somehow I missed all the posts here. Thank you all for your kind input. Actually I've got a set of conversion for my Raptor. It is a Hacker B50-23XL for its easier availability. I run 10T pinion and 85T gear, which gives 8.5:1 ratio. I know this is not going to be a good combination for Hacker's high KV value. But somehow it runs great with a 10S Li-poly pack. The motor is not hot at all during hovering. I haven't had the opportunity to take a forward flight because my thunder packs are still on the way to my house.
I've ordered a Actro24-4 from the states for my Raptor90 conversion, hopefully it will work as great as everyone's.


Angelos:
How's your receiver project going?
01-06-2005 Over year old.
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rroback
Elite Veteran
Location: Irvine (UCI), Ca

My Posts This: Topic  Forum		sad to say, but I don't think your 24-4 will handle a 90 size machine well, depending on what your looking for. I'm running a 24-4 on my joker, which is 60 size, and it flies well on 10s, but not ridiculously over powered. if you 90 can come in at around 10 lbs it will fly well, but I'd expect it to way more, given my joker is e power designed, while your will have to have some mount made.

Rhett..... I can't fly, but the Profi sure can.
01-09-2005 Over year old.
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QCM
Heliman
Location: Scotland

My Posts This: Topic  Forum		Yes rroback is more than likely accurate with his comments if you are looking for similar power to the 90 I/C version raptor.

I am finishing of a scale vario airwolf which was powered by an excel gasser. With the electric conversion, it is pounds lighter, but I am not looking for stunning performance, just clean scale flying ability which the electric can provide. There is no way it will have the same power of the gasser, as that was some serious grunt
01-09-2005 Over year old.
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Svekke
Heliman
Location: Belgium

My Posts This: Topic  Forum		pkwpete ..

How do you install the 9T logo pinion ? Did you also mill the original starter shaft like QCM did ? Do you have pictures of this ?

How many amps wil the 24-4 pull with 8s and 9T pinion and is the Hacker 48-O ESC up to this, does the hacker governor mode work properly, ?

I have now the TT50 glow engine in my rapp 50, is the actro really as powerfull ? Will you get away with 8s2p or do you need the 3p for the batteries to hold (if pulling 40+ amps ?) What flight times do you get with 8s3p hard flying ?

Greetz, svekke.
01-09-2005 Over year old.
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e-Electric Conversions > eletric conversion for Raptor30?
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