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02-24-2010 09:36 AM  10 years ago
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mrloudly

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Naseby Northampton England

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Radikal pull start
For general flying is it not worth bolting the starter on full time?
I'm not into wild 3D and know I'll forget to take the pull start to the field one day... Heli has loads of power, the extra bit of weight hardly seems worrying about?

Andy
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02-24-2010 05:02 PM  10 years ago
chopper_crazy

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Delphos, Ohio

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Why have you decided to go with a pull start instead of using a starter and start shaft?It's a complex, costly, glow powered anti-gravity machine!
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02-24-2010 05:17 PM  10 years ago
mrloudly

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Naseby Northampton England

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Worn out two start sockets and pull start don't need a starter

Been starting her with a 18v cordless drill, works fine but the pull start's so convenient. Truth is I'm used to it with my Vario as well.

Andy
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02-24-2010 05:21 PM  10 years ago
chopper_crazy

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Delphos, Ohio

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Sounds good. I was just curious. I have a Spectra G that has a pull starter on it right now and I really don't like it. I plan on using a starter instead.It's a complex, costly, glow powered anti-gravity machine!
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02-24-2010 07:18 PM  10 years ago
rbort

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Franklin, MA - USA

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Why not
It have holes through the mounting flanges and you can just bolt the two together with a bolt and nut on the other end.

Personally its not a huge issue to take it off, would save you about 4.5oz of weight or the weight of a battery pack. But you're right, weight is not an issue, mine is 11 lbs dry and it flies fantastic.

Chopper Crazy. If you don't do the pull start technique that I show in my video here, you're not going to like the Spectra pull starter. Many people got frustrated with it because they were slap starting it and pulling in the wrong direction wearing out the cog and the keyhole plate. Once you adjust your routine then the pull start will be flawless. Here is a link:

http://www.youtube.com/watch?v=E3Nra3iDOHI

I'm always amazed when I go to funflies and see people pull starting how many and beating their starters to death. You get all sorts of things you see, but the one that wins the cake is the short hard slappy bursts, like 5 in a row in 2 seconds flat just wearing the cog down and then the starter flies off to boot

-=>Raja.
MA 1005 Hanson 2703D, 4400 flts
Spectra 27 3DMax, 3460 flts
Whiplash V1-2 Hanson 300, 1995 flts
Whiplash V2 Hanson 300, 923 flts
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02-24-2010 08:33 PM  10 years ago
oldfart

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Vancouver, Canada

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Worn out two start sockets and pull start don't need a starter

Been starting her with a 18v cordless drill,
The wear of the start socket may well be because you are using an 18Volt drill instead of a proper starter...as they turn at very different speeds.

I have used a Dynatron starter with 14 nimh or 4S Lipos to start my even bigger G231 powered Predator for years and have never worn out the start socket.

I do not think any of the Century R&D team used a drill for starting their Radikals, so they would not have designed it for use of a drill while starting.
Phil
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02-25-2010 12:58 PM  10 years ago
mrloudly

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Naseby Northampton England

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Allen Key in socket rotating against the compression of the engine...Can't really see what difference it makes on how you turn it over. The drill throws slower (2000rpm) than my Dynatron on 6s but has a lot more torque, handy in the cold weather.

Pull start works a treat so I'm not bothered anymore
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02-25-2010 06:03 PM  10 years ago
rccarguy

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Boston MA

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Pull start works a treat so I'm not bothered anymore
I had nothing but aggravation trying to use starter motors on the Radikal in the cold New England winter weather. Couldn't justify spending a lot of $ to upgrade the battery setup for the Dynatron just for this one heli, so went over to pull start and haven't regretted it at all
XCell Spectra G
Radikal G20
Some obsolete nitro helis too...
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02-25-2010 06:10 PM  10 years ago
rbort

rrProfessor

Franklin, MA - USA

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You made me laugh Ken!
I had nothing but aggravation trying to use starter motors on the Radikal in the cold New England winter weather.
I remember seeing some SMOKE coming out of my starter when you tried to use it on your Radikal Ha ha!

Well I also got aggrevated, on Christmas day even with my "better" sullivan starter and 24 volts I couldn't get the Radikal to turn over no matter what I did -- even tried the truck battery with the engine running and no go.

So I had to loosen the spark plug, no go. Loosen it some more, no go. Loosen it until it was hanging by a thread, and finally the motor turned over and fired. Went to try to tighten it and it blew out/motor quit

Had to hurry and get it back on and restart before it cooled too much and wouldn't turn over again. After that, I made sure it stayed hot the rest of the flying day as I didn't want to screw around with the spark plug any more

Anyway, nowadays I have the pull starter and no more worries. I'm also glad I got talked into going that way.

-=>Raja.
MA 1005 Hanson 2703D, 4400 flts
Spectra 27 3DMax, 3460 flts
Whiplash V1-2 Hanson 300, 1995 flts
Whiplash V2 Hanson 300, 923 flts
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02-25-2010 07:21 PM  10 years ago
oldfart

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Vancouver, Canada

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Raja,

What kind of batteries are you using on your ignition. It seems you had mentioned Lipo?

Are you saying that in your cold (what was the temp?) that your dynatron could not turn over the G20 even with the spark plug unsrewed to one thread? Or are you saying it would turn it over but not start it?
Phil
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02-25-2010 07:40 PM  10 years ago
rbort

rrProfessor

Franklin, MA - USA

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Batteries
Oldfart:

I just use a small NoBS 2/3'rd A NiMH pack on my ignition. Its backed up by my Jewel anyways so its only there as backup and to fire the ignition while pull starting, then its on standby after that - I can turn off the ignition switch and the motor will still run. You can see it in my gallery, I just uploaded new pictures of the Radikal there last night.

I own a Magnum and a Sullivan starter. The Sullivan is larger more torque than the Magnum. Even with the sullivan, when it was 27 degrees out, I couldn't get the Hanson G20 motor to turn over with the starter, it would go putt putt putt putt but not spin at rpm. Cold weather makes the motor stiffer to turn over, and its just that first start of the day. Once run, if you refuel when you land you can start easily no problem while warm.

Once I got it turning by leaking out of the spark plug hole, then it fired and with some heat it there it loosened up for me to restart it with the spark plug tight.
MA 1005 Hanson 2703D, 4400 flts
Spectra 27 3DMax, 3460 flts
Whiplash V1-2 Hanson 300, 1995 flts
Whiplash V2 Hanson 300, 923 flts
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02-25-2010 08:05 PM  10 years ago
mrloudly

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Naseby Northampton England

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Makita Lithium sorts it a treat!

Problem is hex drive can't take the stick!

Pull start = Job done ;-)
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02-25-2010 08:21 PM  10 years ago
mrloudly

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Naseby Northampton England

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"I own a Magnum and a Sullivan starter. The Sullivan is larger more torque than the Magnum. Even with the sullivan, when it was 27 degrees out, I couldn't get the Hanson G20 motor to turn over with the starter, it would go putt putt putt putt but not spin at rpm"

I'm glad you've said that, thought my Sullivan was cream crackered!

Andy
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02-26-2010 09:48 PM  10 years ago
CT.Chopper

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Meriden, CT

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my makita setup on the dynatron will spin a G26 at any temp,
the key is the batteries and their tempature.

if you put your stuff in the back of a truck and let the batts get cold it makes a huge difference.
Rob Landry.
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02-27-2010 01:09 AM  10 years ago
oldfart

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Vancouver, Canada

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...the key is the batteries and their tempature.
That is what I found, a couple of years ago when using my Dynatron on my G231 Predator.
Phil
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