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HomeAircraftHelicopterCentury Radikal G20-30 N640 Hawk Predator Docs  Radikal 20 FYI
10-16-2010 06:08 PM  8 years agoPost 941
brunsflyer

rrNovice

East Brunswick, New Jersey - USA

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looking to buy this heli
can people list all upgrade parts used plus what model you are using? the pros and cons LT vs HD? G10 vs Carbon? plus all electronics will be helpful too!

thanks

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10-16-2010 06:30 PM  8 years agoPost 942
bjacks

rrKey Veteran

Ft. Worth, Tex.

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Radikal 20
Love mine so much going to build a second one,I have Align 610 on coll., Align 650 on tail, Spartan 760 gyro, stock motor(going to put a mod motor on the second one, Wally))Century pipe, I crash mine a few months ago and I had a hard time getting parts(it looks like they have the parts now) so I put a T-Rex 600 metal head and T-Rex tail blade grips on mine, I know I can get those parts, like i said before everybody jumps on me at the time they did not have the parts I needed, if your going to put metal on it get the LT version, it's cheaper, the HD version looks like someone put a 90 size head on a 50, this think flys great and It's a good helicopter on top of that, you will like ti. Bobby

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10-16-2010 06:51 PM  8 years agoPost 943
ajcoholic

rrNovice

Timmins, Ontario, Canada

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My first Radikal - an LT/G10 was flown box stock for a month, then I put the following upgrades on:

- alum swash
- alum tail pitchplate
- alum tail gear and idler
- frame stiffeners
- extra spacer between canopy mounts
- RT carbon tail blades
- RT carbon paddles & weights

Electronics are Align 610's on cyclic, some futaba on tail (sorry I forgot the model but its a digital tail servo) and a 760 Spartan gyro, GV1 & stator gator, Spektrum 7100 receiver, stock motor with Century slim gasser muffler. Flying 640mm RT blades.

It is getting a sprag auto bearing as soon as it arrives I am on the third roller bearing one, and that wont be an issue any longer (freezing up).

I think the most noticeable upgrade was the aluminum swashplate. The heli just felt WAY more solid afterwards. I had developed some play in the stock one after several hours flying.

I am almost done my 2nd Radical - a Carbon HD version. I have the same upgrades, as well as the new larger clutch and bell, aluminum tail unit and a Wally upgraded motor. It is also getting a sprag auto unit. Going to go with 620mm blades.

Electronics for it are the JR 8717HV for cyclic, 8900 for tail, 770 gyro, 7100 receiver and an aerospire multigov pro governor. Spektrum 6040 for throttle servo.

Other than the head, the HD and LT are identical.

AJC

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10-17-2010 12:18 AM  8 years agoPost 944
labont

rrApprentice

sudbury, ont, canada

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My, and others, stock plastic swash plates were sloppy as poo before one use. Super poor quality. Just get the metal one and toss the plastic in the bin.

I, personally, could not get the metal head assy to be notch free. I ended up going FBL with the Align 3G and used an Align metal swash as well at half the cost. I'm not ab Align part fan but I have to say the included fbl metal head assy is superb.

Aside from some other little nagging issues it's my fave heli. Love the way it flies with FBL.

Oh, I prefer the G10... seems to be more crash resistant.

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10-17-2010 02:08 PM  8 years agoPost 945
brunsflyer

rrNovice

East Brunswick, New Jersey - USA

My Posts: All  Forum  Topic

must upgrades?
ok so im thinking the G10 LT.

plus metal swach, metal grips, frame brace, metal bell crank, felt filter.

for electronics?

what is the cheapest but still will work for a gasser? or just get the best from the start?

im looking to improve my flying. right now just sports flying but am starting to learn some 3D.

i will be using 620 rotor tech blades. i will continue reading about this heli till im really sure this is the one im going to get. was thinking spectra last year but this size heli is perfect for me to keep cost down and is much cheaper to support.

i like to get a heli that will grow with me so i am thinking of getting everything first. all upgrades and tried and trued electronics from the start.

also what was your final cost for your machine?

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10-17-2010 05:55 PM  8 years agoPost 946
oldfart

rrProfessor

Vancouver, Canada

My Posts: All  Forum  Topic

I think the slop in the plastic swahplate may have been a problem with those from the first production run, as was the case with a couple of other issues.

From what i have seen, that does not seem to be as much of an issue with the units from the production runs following the first one.

Phil

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10-17-2010 11:46 PM  8 years agoPost 947
helijunky

rrApprentice

s elgin il

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i got mine this july and what i did was removed the screws that keeps the bearing in place and put some washers to grab the edge of the bearing better still no slop 2 gallons later ihope this helps someone

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10-19-2010 01:57 AM  8 years agoPost 948
tnbulldog

rrApprentice

Cookeville, TN

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I found the slop in the swash to be in the main bottom bearing.
I applied some sideload to the bearing by drilling and tapping holes for 3mm setscrews in the sides, this allows side load to be applied to the bottom bearing.
I put 4 setscrews around the perimeter wherever the thickest plastic was. Apply thin ca to the setscrews to stop them backing out.
Removed all the slop I had in the swash.

I had to do this mod to all Hirobo plastic swashes I've ever used.

What he flies, people buy!

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10-25-2010 03:04 PM  8 years agoPost 949
Dr. Fibinotchi

rrKey Veteran

Sioux Falls SD

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hmm
Got the spraq fit together today at work on break. Last night I was looking at the fit and it didnt line up well to push in the sleeve from the other side. Make sure its lubed up and the bearing assy is seated fully. Once I did this it fell right in. Looks like a high quality unit but its a tight fit. This with the upgraded clutch should make the transmission snappy and not like the 1005 on the tuned pipe. A slipping clutch really takes the pop out of many manuvers.

-C

If you want others to be happy, practice compassion. If you want to be happy, practice compassion.

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10-25-2010 10:33 PM  8 years agoPost 950
ajcoholic

rrNovice

Timmins, Ontario, Canada

My Posts: All  Forum  Topic

I have two due in the mailbox any day now ( one sprag setup for each of my radicals). I only bought the larger clutch and bell for my hopped up motor, plan to use the hock clutch and bell with the stock motor. I have never had any issue with the stock clutch.

Ajc

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10-26-2010 03:52 AM  8 years agoPost 951
Dr. Fibinotchi

rrKey Veteran

Sioux Falls SD

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hmm
I am guessing it since this was an upgrade that it was not thought of clearance on the main gear tail gear. Went to put the gears in tonight. Denied. 1/16" on each side on the bottom the new hub is too wide compared to old. I can dremel out a little to slide it in or split the frames. I don't think I would be giving away any mentionable amount of support by 1/16" on the frame on the back side. The sweep up front a little more worried. The thing is it would be a+ rated to change gears out without splitting the frames to put main gears in.

Comment please...

-C

If you want others to be happy, practice compassion. If you want to be happy, practice compassion.

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10-26-2010 04:10 AM  8 years agoPost 952
Billme

rrElite Veteran

MS

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I dremeled out just a small amount on the right side of the heli to allow the new hub to slide in..Just put the hub up there and look, it will show you just two small flairs with a dremel will allow it to be lower, and able to slip right in...

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10-30-2010 12:28 AM  8 years agoPost 953
ajcoholic

rrNovice

Timmins, Ontario, Canada

My Posts: All  Forum  Topic

I have a question... seeing as how my new main gears/sprag auto units are due in any day.

It is cold here now where I am. About the freezing mark or slightly below.

WOuld the plastic parts, tail belt, etc be safe to run in these temps? I would really like to get at least a few flights on my HD carbon Radikal before I put it away for the winter.

How cold is too cold for these helis? I never did fly my old helis (Shluter,Kyosho and JR) when it turned this cold.

AJC

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10-30-2010 12:43 AM  8 years agoPost 954
Dr. Fibinotchi

rrKey Veteran

Sioux Falls SD

My Posts: All  Forum  Topic

hmmm
There is several large threads on cold weather flying. Most would agree in the statement the harder you fly especially pop maneuvers the higher the probability of a gear strip.

I just ran my engine tonight. It's eager for mote fuel.

Cody

If you want others to be happy, practice compassion. If you want to be happy, practice compassion.

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10-30-2010 01:02 AM  8 years agoPost 955
ajcoholic

rrNovice

Timmins, Ontario, Canada

My Posts: All  Forum  Topic

Well, since my engine for that one is brand new, I was thinking maybe hovering out several tanks, and maybe a few more gentle flyign around.

Nothing "crazy"... until the spring

AJC

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10-30-2010 12:17 PM  8 years agoPost 956
Against Gravity

rrVeteran

Pottstown PA

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OK With A Little Care
Cold will give you more power and more lift. But you need to take care, and check your belt tension, " maybe upgrade to the aluminum tail gears". Set your mixtures just a tad richer.
Your battery packs will not last as long, so check them more regularly.
Also plastic tends to be more brittle, so watch how hard you hit the skids.
There are allot of people who fly year round in some very cold climates. For me, my fingers are the only factor in how cold I fly.

I think the Helical cut main gear on the Radikal, Should hold up to plenty of abuse. The tail drive gears might be in question.

AG

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11-01-2010 11:22 PM  8 years agoPost 957
ajcoholic

rrNovice

Timmins, Ontario, Canada

My Posts: All  Forum  Topic

Well my two Sprag units came in the mail today.

I am hoping to head down to the workshop this evening and get them installed.

AJC

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11-02-2010 10:33 PM  8 years agoPost 958
ajcoholic

rrNovice

Timmins, Ontario, Canada

My Posts: All  Forum  Topic

Well, that was easy. I just took my Permagrit sanding stick, and slightly flattened the cutout where the main gear is. Maybe took 1/16" off at best, and the gear slides in.

The sleeve is a little tricky to slide into the Sprag unit.. but a little patience and its good to go.

AJC

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11-07-2010 05:35 PM  8 years agoPost 959
Against Gravity

rrVeteran

Pottstown PA

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Tail boom
Can any one check the length of the G20 tail boom. Put a dent in mine, when it slipped off my work bench. Hoping I can find a substitute, maybe a Rappy 90.

Thanks

AG

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11-07-2010 11:37 PM  8 years agoPost 960
blade77

rrApprentice

N. Ireland

My Posts: All  Forum  Topic

I have been messing about with tail booms and while I have not measured it I can tell you the Rap 90 boom is longer and is slightly larger O/D.It can be squeezed into the r20 boom clamps.

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