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Scorpion Power Scorpion Power
HelicopterGasser Model RC HelicoptersOther › G20 ignition power
12-29-2009 03:15 AM  7 years agoPost 101
James Kovach

rrKey Veteran

canton, oh - US

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and also, if you look at that graph.. as soon as a load is put on those cells, they drop to 6.5 volts and kind of level off around 6.4. So final voltage with the step downs is around 5 volts going to the Ignition.

That graph is BEFORE the step downs. That is not the final "output" voltage going to the Ignition.

*disclaimer: These are my opinions. Agree or disagree, Your Call :)
Let'r Rip Tator Chip

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12-29-2009 03:22 AM  7 years agoPost 102
nowinkk

rrNovice

LandBelowTheWings

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Thanks. I almost post my reference to your above graph until I saw your new post, thus deleting it.

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12-29-2009 05:23 AM  7 years agoPost 103
rbort

rrProfessor

Franklin, MA - USA

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Top drive Jewel in progress

I uploaded a couple of pictures of the Jewel on top of the start shaft. The mount on there is actually a trex 700 mount, but its the same idea just need to extend it down to reach the bolt pattern for the clutch bell and have a relief hole for the cyclic bellcranks.

I pass some measurements to the machinist and wait to see what happens from there.

-=>Raja.

MA 1005 Hanson 280, 4129 flts
Spectra 27 3DMax, 3187 flts
Whiplash V1 Hanson 300, 1425 flts
Whiplash V2 Hanson 300, 185 flts

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12-29-2009 05:38 AM  7 years agoPost 104
Justin Stuart (RIP)

rrMaster

Plano, Texas

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I like the pictures of the top drive better than the bottom drive.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

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12-29-2009 02:04 PM  7 years agoPost 105
AceBird

rrElite Veteran

Utica, NY USA

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I like the pictures of the top drive better than the bottom drive.
I would not have chose that size belt and pulleys for this application (too heavy).

As a rule of thumb flat washers should always be used on slotted holes especially when the material is aluminum or plastic. Coupled with lock washers is even better.

Ace
What could be more fun?

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12-29-2009 02:11 PM  7 years agoPost 106
AceBird

rrElite Veteran

Utica, NY USA

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Who hoo, I just noticed, it is now acceptable to use the bung for fuel lines on the tank because the experts are doing it. Who would have thought!

I don't see the third line. Where is it?

Ace
What could be more fun?

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12-29-2009 03:00 PM  7 years agoPost 107
shawmcky

rrElite Veteran

Isle of Wight,United Kingdom

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Hope the carb doesnt leak

That E motor looks like a good ignition source.

Team- unbiased opinion.K.I.S.S principle upheld here

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12-29-2009 03:57 PM  7 years agoPost 108
rbort

rrProfessor

Franklin, MA - USA

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You guys...!

The electric motor is BRUSHLESS you guys should know that...there is no sparks coming out of it to ignite any fuel. I don't forsee that as being any problem but since the top mount seems to be favored along with doing away with electric start sounds like that will be the norm and the one or two old timers who can't pull start or don't want to can do it bottom mount option.

-=>Raja.

MA 1005 Hanson 280, 4129 flts
Spectra 27 3DMax, 3187 flts
Whiplash V1 Hanson 300, 1425 flts
Whiplash V2 Hanson 300, 185 flts

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12-29-2009 04:02 PM  7 years agoPost 109
Carey Shurley

rrElite Veteran

Orlando, FL - USA

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one or two old timers who can't pull start or don't want to can do it bottom mount option
just because I don't believe in pull starting doesn't make me an "old timer"

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12-29-2009 04:36 PM  7 years agoPost 110
bjacks

rrKey Veteran

Ft. Worth, Tex.

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G20

Hey-Hey don't be talking about old people, we have feeling too. Bobby(I don't like pull starts either)

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12-29-2009 09:48 PM  7 years agoPost 111
AceBird

rrElite Veteran

Utica, NY USA

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I am not ready to give up my pull start unless it is detachable.

Ace
What could be more fun?

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12-30-2009 12:11 AM  7 years agoPost 112
Fixit

rrElite Veteran

UK

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The electric motor is BRUSHLESS you guys should know that...there is no sparks coming out of it to ignite any fuel. I don't forsee that as being any problem but since the top mount seems to be favored along with doing away with electric start sounds like that will be the norm and the one or two old timers who can't pull start or don't want to can do it bottom mount option.
The three wires from the motor run right over the tank bung, petrol and electrical items just don’t go together no mater how safe you say the motor is plus the motor will be covered in petrol at some point no matter how careful you are when filling the tank.

Raja, I don’t think you could have picked a worse spot to mount the generator.

I only like to fly gassed up

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12-31-2009 12:17 PM  7 years agoPost 113
eagle51

rrNovice

Freiburg, Germany

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G20 ignition with 1SLiPo

is nobody using a 1S LiPo to power the ignition? That is what the dealers offer here in Germany. Nothing else needed, just connect the battery to the ignition.

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12-31-2009 03:08 PM  7 years agoPost 114
AceBird

rrElite Veteran

Utica, NY USA

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Raja, I don’t think you could have picked a worse spot to mount the generator.
I don't particularly like how he did it but the location doesn't concern me. The wires could be moved away from the bung rather easily. I would do that so vibration of the tank doesn't cut through the insulation. There is no safe spot on the heli if raw fuel was spilled and a spark occurred. The connectors on the charging motor are not usually decoupled. If they were is should be done without power and not if wet fuel was present. That goes for any electrical connection.

I think I was the first person to mount the charge motor on that end of the motor, (maybe not) but doing so doesn't eliminate the pull start if you want to make a few simple mods.

Ace
What could be more fun?

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12-31-2009 05:01 PM  7 years agoPost 115
jac5304

rrNovice

Mount Juliet, Tn - USA

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Hello,
I have read this entire thread and I will probably be buying a LT version in very near future.(Should have the money in 3 or 4 weeks) I was wondering if anyone has bought and flown this heli in its stock configuration with out any mods to the engine or heli. Just buy build and fly. If so what issues did you encounter? Has anyone used the stock Zenoah muffler? I fly a JR Voyager nitro and a Mini Titan electric. Don't fly any hard 3d yet, just some inverted, rolls and flips.I will be using the electronics from my JR. SAB 620 blades. Being able to use pump gas will pay for this heli over time but the initial investment is huge for me.

Just want to say that this a great thread and full of very usful info that I'm sure I will be using after I buy one of these.
PS: I think the balls on the wash out arms should be leading. That's how they are on my TT and JR.

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12-31-2009 05:14 PM  7 years agoPost 116
rccarguy

rrVeteran

Boston MA

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I was wondering if anyone has bought and flown this heli in its stock configuration with out any mods to the engine or heli. Just buy build and fly. If so what issues did you encounter?
Through most of the engine break-in I flew mine box stock with the exception of using the Century Torpedo muffler instead of the Zenoah unit. Highly recommend you go with a heli specific muffler rather than the stock Zenoah if for no other reason than the Zenoah aims the exhaust directly at the fuel tank and you'll need to fabricate a deflector to keep from melting a hole in the tank.

I stripped all of the electronics out of my Raptor 50 Titan for the Radikal, and wound up only making minor modifications to the radio setup, the Radikal is not that different than the average 50 nitro other than the engine.

Only thing to be aware of if you keep to a box stock build is that there is an update to the tail for leading edge control rather than the original configuration with trailing edge. If the kit you get has does not have the update, you can call Century and they will provide it free of charge.

The build instructions show the linkage trailing on the washout and many have built it that way. Bill M made a good case for setting it up with the linkage leading as you mention, and when I swapped to the metal head I set mine up as leading, but it will work either way.

Good luck, you will enjoy the Radikal

I just thought of another thing, there are two different gear ratios available now, you should build with either the 6.4 or 6.9, it will fly OK with the stock 6.0, but you'll get better all around performance with the other ratios.

XCell Spectra G
Radikal G20
Some obsolete nitro helis too...

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12-31-2009 05:17 PM  7 years agoPost 117
Rodney

rrVeteran

St.Cloud,Florida

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I am using a 1s ION. I have 1000mah and 2000mah setups. Works great for me. I dont mind charging them.

Dx7 With Ion Power Supply. Why use anything else.

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12-31-2009 06:38 PM  7 years agoPost 118
jac5304

rrNovice

Mount Juliet, Tn - USA

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Thanks for the reply rccarguy. Now I just have to chose between upgrading my Harley or buying this Heli. Tough decision.

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