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HelicopterCentury Radikal G20-30 N640 Hawk Predator › Hey Hawk drivers, a question for you.
03-18-2009 03:11 AM  8 years agoPost 1
lrogers

rrKey Veteran

Mobile, Al

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I have just completed phase one of upgrades to my Hawk. Still waiting to test fly it! I added the larger fuel tank, the driven tail mod, the metal clutch bell, the turbo cooling fan and changed the gear ratio. I hope to test it this weekend.

Before I jump into phase two, I'd like the opinions of others who have added the following parts:

1. The CCPM conversion kit. Also, does it foul the canopy?
2. The metal head.
3. The metal tail and slider
4. The 4mm flybar
5. The anti-rotation bracket.

Are the gains in performance worth the cost and effort for these parts?

These are the up-grades under consideration. I know that I will end up with a VERY EXPENSIVE Hawk if all these are done(plus what I have all ready done).

I have been pleasently surprised since I got the Hawk at just how well it flies. It sees a lot of air time. I don't mind investing the time and money to make a good flier better, but at the same time, I don't want to waste money that could be spent of fuel.

Any and all input is appreciated!

Larry Rogers - R/C Helicopter Pilot

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03-18-2009 03:45 AM  8 years agoPost 2
MAXHSHV

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,mn usa

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All but one of the mods you already did are worth while,but if you're still runninmg a 37 the taler gearing will make the motor bog really easily.I tryed it myself.

as far as ccpm,It comes with an antirotation bracket,and the ccpm is worth while.the metal head is unnessasary imo on a 37, but the 4mm flybar comes with closed loop levars witch is good for response and durability, but the 4mm flybar adds weight to the paddles, effectivly slowing cyclic response.The metal tail is a great upgrade because it comes with trust bearings and the grips are alot tighter, improves the tail greatly, and finally the metal slider is a must, because i've had the stk slider fail and every one of my raven's,hawks, and kinetic 50's.However you need to check the locktight on the metal slider, I've had the nut's come off on them aswell, The trick to keeping them on is jb weld instead of locktight.I got that trick from the guys at heliworld.
One last thing, on your turbo fan ,make sure you get the special starter shaft inserted all the way into the one way bearing when starting, otherwise your $44.00 fan will be useless in short order, cause the one way bearing isn't sold seperatly.

Century heli rep. To much power is never enough.

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03-18-2009 04:06 AM  8 years agoPost 3
Ray Fernandez

rrElite Veteran

Guam (U.S.A.)

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Before I jump into phase two, I'd like the opinions of others who have added the following parts:

1. The CCPM conversion kit. Also, does it foul the canopy?
2. The metal head.
3. The metal tail and slider
4. The 4mm flybar
5. The anti-rotation bracket.
This is "MY" opinion, reference to your question above.

First of, the CCPM conversion is a good thing. It will give you some quicker responses. As far as "foul" the canopy, are you asking if the CCPM system will cause havoc on the canopy? Actually, the plastic canopy wouldn't be too much of a bother. However, a FG canopy will have some "stress" cracks where the CCPM brackets will be in contact with the canopy as time and flying go on.

Metal Head.......if your system is flying well, I'd say do not spend the money for this upgrade, use the cash for the fuel.

Metal Tail and Slider......I'd get it.

4mm Flybar....... I like the "beefier" flybar so that can be added.

Anti Rotation Bracket.......if you opt not to get the CCPM conversion (which has it BTW) I would get it and add it on to the Hawk.

Ray Fernandez - GUAM

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03-18-2009 04:22 AM  8 years agoPost 4
Blade_Master1

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Canada

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make sure you get the special starter shaft inserted all the way into the one way bearing when starting, otherwise your $44.00 fan will be useless in short order, cause the one way bearing isn't sold seperatly.
This is one upgrade that isn't worth a dime
after having 3 of these units fail within a year on 2 seperate machines.

as far as ECCPM and MCCPM it is a matter of personal choice one does not make the machine better or worse

Using either the stock or cnc tail from the Raven is a good upgrde

using the larger fuel tank will make the CG change more during flight
putting a header tank in the nose will help

If I could start over
I would have got the TT RL53 for an engine and put 570mm blades
installed the red dampners, 6 mm spindle and Raven stock tail and
operate the RX gear with a 6V system
and leave the rest alone

IMO the next logical step would be getting a Raven

but then again I have had more fun tinkering

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03-18-2009 12:45 PM  8 years agoPost 5
Ray Fernandez

rrElite Veteran

Guam (U.S.A.)

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but then again I have had more fun tinkering
.......and I think that's is the real reason we do this hobby.

Ray Fernandez - GUAM

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03-18-2009 10:33 PM  8 years agoPost 6
lrogers

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Mobile, Al

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Thanks guys! This is the type of info I needed.

I too, like to tinker!

Larry Rogers - R/C Helicopter Pilot

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03-21-2009 09:39 PM  8 years agoPost 7
reddragon

rrElite Veteran

Brooklyn, N.Y.

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This is one upgrade that isn't worth a dime
after having 3 of these units fail within a year on 2 seperate machines.
Blade Master 1:
I have to ask, did your bearing fail as well? If not, how did it fail?
using the larger fuel tank will make the CG change more during flight putting a header tank in the nose will help
I see from your gallery that you did purchase and use the larger 500CC fuel tank. Since the stock fuel tank is directly under the main shaft and not aft did you find that the slightly larger/longer fuel tank really made that much of a difference in the CG of the helicopter? I have one that I haven't installed as yet. I'm sure it is different on the Raven and on the Helimax Kinetic since they're larger, but I'm keen to hear your insight on the larger 500CC tank mounted in the Hawk. Thanks.

Wayne - Fly it like you stole it! You're in good hands with Runryder!

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03-21-2009 11:28 PM  8 years agoPost 8
Blade_Master1

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Canada

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All 3 oneway fans failed The bearing just isn't very good quality
and there is no replacement that I could find .

I have flown a 30 with the large tank for a season
You can get 20 minute flights using 15% nitro
BUT the CG will change quite noticeably from start to finish
One of the reasons I put a header tank up front was to help offset this problem.

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03-22-2009 03:26 AM  8 years agoPost 9
reddragon

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Brooklyn, N.Y.

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Interesting.

Thanks very much!!

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03-22-2009 02:35 PM  8 years agoPost 10
Dilbeck

rrElite Veteran

Springdale Arkansas

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BM1, Interesting about the metal fan with the 1 way bearing failure. I have 2 and use a dewalt drill to start them. Not one issue in 2 years. I must just be lucky.

Clint

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03-22-2009 06:57 PM  8 years agoPost 11
Furious Predator

rrProfessor

Kitchener, Ontario,​Canada

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im in the same boat as Dilbeck, no issues here with the metal fan on my raven...

Shawn
Team Leisure-Tech
Team HelixRC

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03-22-2009 07:26 PM  8 years agoPost 12
MAXHSHV

rrKey Veteran

,mn usa

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My metal fan is still going strong aswell.I was warned by heliworld when i bought ro insert the wand fully, and no problems.

Century heli rep. To much power is never enough.

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03-22-2009 07:45 PM  8 years agoPost 13
Blade_Master1

rrElite Veteran

Canada

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What can I say ?

Looks like some are luckier then others.
I used a drill at first. "one of my reasons for buying this fan"
after the first 2 died I started using the century wand then my last one died.
Of the 3, I bought 2 brand new, 1 from the LHS, One online and the 3rd came with a used heli frame.

Century should make available the upper portion of the fan for sale at the very least.

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03-22-2009 10:12 PM  8 years agoPost 14
reddragon

rrElite Veteran

Brooklyn, N.Y.

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Well I wanted to upgrade from the plastic fan.
I guess some had problems and some didn't.

Wayne - Fly it like you stole it! You're in good hands with Runryder!

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03-22-2009 10:56 PM  8 years agoPost 15
Furious Predator

rrProfessor

Kitchener, Ontario,​Canada

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i personally prefer the metal fan, more for easier starting then anything else.

i found the stock starting setup was too awkward, and once in a while, the starter would get stuck while the engine is screeming away.

while i did wreck on metal fan, it was my own fault. i did not lock-tight the upper half as the instructions indicated. the upper half unscrewed and shoved itself into the fan shroud.

then on top of it, i managed to cross the threads and wreck it.

i put lock-tite on my second one, and its been running strong since.

Shawn
Team Leisure-Tech
Team HelixRC

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03-23-2009 12:45 AM  8 years agoPost 16
lrogers

rrKey Veteran

Mobile, Al

My Posts: All  Forum  Topic

I just got back from the field and I must say, all the upgrades worked as I had hoped. The Hawk fly well inspite of very windy/gusty conditions. Good for practicing "collective management"!

I thought it sounded a bit different today. I would assume that was because of the fan. Over all, I was very pleased with the way it flew.

Larry Rogers - R/C Helicopter Pilot

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