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Scorpion Power AlignRC
ICUR1-2

Key Veteran

Ottawa, Ontario

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A more up to date and more fair a comparison, would be to build the latest version of Radikal, the G-30V2FBL
Either joking or drinking

spending time, paying attention

06-23-2016 09:56 PM
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oldfart

rrProfessor

Vancouver, Canada

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D Either joking or drinking
What Century gasser have you ever owned?

Phil

06-24-2016 01:23 AM
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Carey Shurley

Elite Veteran

Orlando, FL - USA

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I don't know much about the original Radikal however I have built and own a G30V2 and I found it to be a nice model.

I've also built the T700RC conversion and its a very nice conversion for the Trex 700. Right now they are selling for $145 and I think that include a fiberglass canopy. Even if they don't make them anymore you can buy 2-3 of them and have parts until you're tired of flying it.

You can find my full build documentation for both of these if you look around

If you're not flying a gasoline helicopter
You're paying 10 times too much for fuel!!

06-24-2016 01:28 AM
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Gearhead

rrMaster

Vt

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AND it STILL flies like $hit
well, you sure have been flying those $ity flying helis for a long time now !!,,
but I have to say that I feel most of your problems come from vibrating them helis to death with those home made Stroked Cranks

Jim
Buzz Buzz Buzz

06-24-2016 02:22 AM
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RM3

Elite Veteran

Killeen, Texas - USA

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vibrating them helis to death with those home made Stroked Cranks
no, I have gone thru about maybe 16 - 18 iterations of cranks (from titanium, 4140, 41L40 alloy, hardened etc), each with different balance factors from 55% all the way up to 75% with less than 0.0002 TIR runout end to end and compared them to performance specs from other manufacturers...and they use the same balance factors based on displacement and RPM use.
the truth is a high compression PUH will vibrate to some extent no matter what (with 70% balance factor being the least vibratory of all) BUT another issue is that damn torque pulse from such an engine...no big deal on a plane, but a heli, its a problem. The PUH just does not have the mass to absorb it. This is where a Heli with a RC format engine shines...the mass of the flywheel helps ALOT. Why else do you think Goblins and Whippys use it and not the PUH which comes in similar displacements and weighs less? its not all about cooling you know.

Honestly the Radikal G20 was never ment to handle a more powerful engine than stock. The G30 was never ment to handle anything more powerful than the 270...Ever wonder why Century never released the OMG version? cause it too would fall apart after a few flights despite all the CNC/CF upgrade BS lingo they would throw at it, the vibs tore it apart too.

These helis are very light weight, but with that lack of weight comes limitations on rigidity and durability....then add the issue of bad runout on stock bells, clutches, pinions (as I already stated) and you have a heli that just does not perform as well as it should and is outclassed by others with similar displacement/blade size.

Having spent thousands on this particular brand and seen what others get for their money...Century is the K-mart/Dollar store brand...you get what you pay for.

showing a preference will only get you into trouble, 90% of everything is crap...

06-24-2016 05:47 PM
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jackp332

Key Veteran

Claremont, Nh USA

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I always wondered why the Century did not use the rc format engine- so it was just to save weight? I was worried about vibrations when I got into gassers but my helibug converted Raptors use the rc style engine and both of my g240s have been great.

06-24-2016 06:31 PM
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Carey Shurley

Elite Veteran

Orlando, FL - USA

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there is very little weight difference between the PUH and RC format engines.

there is however a significant difference in footprint, the rc format engine is wider and taller so it causes the model to be a little taller but it allows a superior mounting approach and has a superior cooling system. Plus as mentioned earlier they tend to run smoother than the PUH.

the two engines share I think one part, everything else is physically different

Vario was the first vendor to use the RC format engine in a helicopter in the Benzin Trainer and later in the Acrobat. Later Helibug started using it in gas conversions and then others

it really simplifies it for the manufacturers as its not necessary to mold a fan shroud or make a fan because the RC engine has a built in cooling system.

If you're not flying a gasoline helicopter
You're paying 10 times too much for fuel!!

06-24-2016 06:59 PM
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RM3

Elite Veteran

Killeen, Texas - USA

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there is very little weight difference between the PUH and RC format engines
not when comparing an EI version PUH to a RC... the mass of the rotating components that have a purposeful function to engine performance is significant and an important function to smoothing the power delivery of a single cylinder engine.
the two engines share I think one part, everything else is physically different
What do you mean only share one part?

take the 231PUH and the G230RC
they share ....plug, bearings, oil seal, roller bearings, most bolts, connecting rod, piston, piston ring, carb, insulator block, shims, locating pins, keys, intake and exhaust gasket.

the same goes for the others all the way up to G320PUM(not a heli engine just cause of the water jacket but still) and G320RC...

showing a preference will only get you into trouble, 90% of everything is crap...

06-24-2016 08:10 PM
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Carey Shurley

Elite Veteran

Orlando, FL - USA

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not when comparing an EI version PUH to a RC
okay fair enough.......but then most people are running the magneto version of the PUH. Their weights are very similar

parts - well I didn't realize you were going to parse it down to nuts and bolts and bearings. Most of the actual engine parts are different. I don't think most people have the tools to replace a connecting rod even if they could buy it

If you're not flying a gasoline helicopter
You're paying 10 times too much for fuel!!

06-24-2016 08:24 PM
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rbort

rrProfessor

Franklin, MA - USA

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When I measured a while back

I think the RC version power plant is 2oz heavier than a PUH setup on my Spectra-g. But I like the RC version better for that heli for sure. The weight was motor and fan if I recall correctly.

They were both magneto.

-=>Raja

MA 1005 Hanson 280, 4038 flights
Raptor 90 Hanson 300, 267 flights
Spectra-G G270 3DMax, 3110 flights
Whiplash-G G270 3DMax, 1270 flights

06-24-2016 08:46 PM
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oldfart

rrProfessor

Vancouver, Canada

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...Ever wonder why Century never released the OMG version? cause it too would fall apart after a few flights despite all the CNC/CF upgrade BS lingo they would throw at it, the vibs tore it apart too.
That is one BIG assumption indeed.

I had a number of discussions with Peter, the owner of Century, at that time about the OMG. These ended up to be mostly relative to the projected market demand for such a heli. Basically if he thought that an adequate quantity could to sold to the relatively small gasser market at that time. As in most such projects, this is a very important consideration. In the end, he did not think the market was big enough to put it into production. It had nothing to do with it being able to take the power of the newer engines. In fact, if he would have put it into production, he had plans for a special HWC version of the Zenoah for it....which was also being tested, and the results were quite positive.

Phil

06-25-2016 01:05 AM
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Gearhead

rrMaster

Vt

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Having spent thousands on this particular brand and seen what others get for their money
it's funny you say that, I got an Email from another RR member, read his Email>>
Jim, how nice it is that Raja never had a single problem with his ma gassers
talking about sarcasm

Jim
Buzz Buzz Buzz

06-25-2016 02:43 AM
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rbort

rrProfessor

Franklin, MA - USA

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Ha ^^^^

You mean Phil the leisure suit dealer?

Its alot different between never had a problem, and always having problems. I never said I never had a problem with MA, but I had alot more problems with the Radikal. Anyway, lets not go through that again, its done and over with.

-=>Raja.

MA 1005 Hanson 280, 4038 flights
Raptor 90 Hanson 300, 267 flights
Spectra-G G270 3DMax, 3110 flights
Whiplash-G G270 3DMax, 1270 flights

06-25-2016 04:11 AM
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RM3

Elite Veteran

Killeen, Texas - USA

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I think the demand for the OMG version was there...it came out right after the whole gasser mania happened...but I think the quality control issues posted by buyers of G20s and some 30s (the 20 and 30 share alot of the same driveline parts) killed the whole thing along with how they started undercutting distributors. it was right after that distributors stopped stocking the Radikal line...and and potential new Radikal customers took note.

too many bad things started happening at the same time for Century be it by self action or market conditions... they could have been great.

I wiil add that I think Leviathan, Helibug and a few other "conversion-istas" are the only serious ones trying to keep the gasser genre alive with thier support and products (AFAIK MA is still on life support)...its obvious the gasseer market is still shrinking....lets hope it does not shrink too much more.

showing a preference will only get you into trouble, 90% of everything is crap...

06-25-2016 05:30 AM
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oldfart

rrProfessor

Vancouver, Canada

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Its alot different between never had a problem, and always having problems. I never said I never had a problem with MA, but I had alot more problems with the Radikal.
And that opinion was all based on the version you had - the initial "sport" version.

My first Audi was a disappointment back in the late 70's, but the later versions I owned were far different animals. I loved them. Thank god I did not hold a grudge after the first one.
Anyway, lets not go through that again, its done and over with.
I agree

Phil

06-26-2016 02:51 AM
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Gearhead

rrMaster

Vt

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You mean Phil the leisure suit dealer?
NO Raja in a bottle, I have not talked to Phil in a long time,, it was from some one that you fly with

Jim
Buzz Buzz Buzz

06-26-2016 04:23 AM
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rbort

rrProfessor

Franklin, MA - USA

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Really?

Like who? Tell me who has interest still involved with Century besides you and Phil? BY the way, you can tell how people put words together, that looks like Phil to me.

I gave Jack today my spare Raptor head parts, next time I see you I'm going to give you my Radikal head souvenir parts complete with the banana main shaft! (not pictured below)

Maybe you can still use something out of that, a stamped washer or bearing

-=>Raja.

MA 1005 Hanson 280, 4038 flights
Raptor 90 Hanson 300, 267 flights
Spectra-G G270 3DMax, 3110 flights
Whiplash-G G270 3DMax, 1270 flights

06-26-2016 04:42 AM
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Gearhead

rrMaster

Vt

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Tell me who has interest still involved with Century besides you and Phil?
are you paranoid Raja, I never said he was involved with Century

Jim
Buzz Buzz Buzz

06-26-2016 04:55 AM
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Gearhead

rrMaster

Vt

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I never said I never had a problem with MA
Daa,, it's in English >>>, the point is that YOU never told people that you did have problems, and you did have problems, and you kept those problems quiet and off the forums so no one would know,, why do you think the guys in Germany are redesigning some of the MA helis, because they are NOT as perfect as YOU want every one to believe,

you know Raja, it's all on you, the thing is, if you were straight with Peter most likely he would have given you (free) the parts you needed, or give you the 50% discount like he did with your kit

BTW Raja, I was told you were bashing Synergy, then when MA went out you asked (was it Tim ?? not sure) if Synergy would take you on as a Rep, they shot you down, is that true ??

Jim
Buzz Buzz Buzz

06-26-2016 05:02 AM
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Gearhead

rrMaster

Vt

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that looks like Phil to me
NO-p, not Phil,, please don't think evvvvvery one likes you Raja

Jim
Buzz Buzz Buzz

06-26-2016 05:04 AM
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