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HelicopterCentury Radikal G20-30 N640 Hawk Predator › How to convert a hawk sport in ccpm???
04-26-2004 06:00 PM  13 years agoPost 1
Kiwi

rrApprentice

Monterrey NL Mexico

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I have reading about some guys made a convesion a hawk to ccpm for a scale project, please send info about it

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04-26-2004 06:23 PM  13 years agoPost 2
Gearhead

rrMaster

Vt

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04-26-2004 09:05 PM  13 years agoPost 3
dnts

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Israel

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Why upgrade the Hawk to CCPM? Sell the hawk and get a Raven 30 from Rick's for $247 (I did). You will have all the CCPM plus the upgraded tail hub, thrust bearing in the mail blade grips, metal head, 6mm feathering shaft, rear mounted rudder servo. My Raven is complete and waiting for the test flight.. Irvine 39/MP2, 3xS9252, GY502/9253, NHP 550 carbons and carbon tail blades... hmmm...
Nir

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04-27-2004 05:40 AM  13 years agoPost 4
Gearhead

rrMaster

Vt

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dnts,,, with that Irvine 39 and MP2 you may (may) need longer than stock tail blades to hold the tail straight in full-stick climb-outs...

Jim

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04-27-2004 05:52 AM  13 years agoPost 5
dnts

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Israel

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Jim,
That's one of the things I want to check - it will only be a problem if I go above 10 degrees of pitch, I think. I don't know how long the stock wire drive will hold under these extremes but all this will be tested in real life soon (I hope). Irvine 39 with MP2 does sound more like a 50 platform than a 30.
Nir

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04-27-2004 05:49 PM  13 years agoPost 6
JoeB1

rrApprentice

Ireland, Wicklow

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If you are using the CCPM set up on the Halk it may not fit some scale bodys because of the brackets and servo location. The 30 airwolf and bell 222 for example would cause probs. Or so if heard so I went the oldfasioned way.

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04-27-2004 07:37 PM  13 years agoPost 7
dnts

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Israel

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Jim,
Are you right or are you right... went with the Raven for a maiden flight today (independence day vacation). Took a while to get the engine up and running but when it did - the MP2 bark was awesome. I let it hover for a minute or so and then decided to see if you were right about climb outs... you were.. tail did not hold the torque but was was worse was the stupid tail slider that came apart.. and while trying to get it down from the 2 feet high it was - the blades hit the ground and I am down one set of NHPs and one main shaft (nothing else luckily). I took the slider apart and made a groove in the brass sleeve of the pitch slider right where the retainer ring "fingers" (or whetever they are called) touch the sleeve. I hope this setup will hold but I might just put some JBweld on that as well.
For what it's worth, the few minutes I did fly the Raven I thought it was awesome - day and night compared to the Hawk - more in the Pmax neighbourhood (Pmax is scheduled for this Saturday).
Nir

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04-27-2004 09:07 PM  13 years agoPost 8
Gearhead

rrMaster

Vt

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and the funny thing is the 30's have the same tail blades as the 50's, so you would think it would hold, that just shows you the power that motor has, a little less pitch (at 1/2 stick and 3/4 stick) will help the tail to stay put (but most likely you will need longer tail blades !!),,,

one thing to remember about your Raven 30 is that it has the exact same rotor head as the Raven 50, so don't worry if your head speed is a little high like around 2000 RPM, it will hold-up good because your 30 is spinning the smaller 550 blades,,, Payton runs his Raven 50 at 1950 all the time with 600, so don't worry if yours sound a little high,,,

if you want to try some other blades, I like my Century Vortex blades (600), they fly and hover smooth, yet roll nicely, they are not the quickest or best but I like them, they don't make that sharp flapping sound coming out of a maneuver as much as some others I have flown (what ever that means),,,

you know I was thinking that with the 39 size motor you may be able to run the larger 14 tooth drive pinion gear, your motor would smooth-out some and your top speed will increase, you may want to try that if you ever need to split the main frame,,,

the manual calls for J&B on the tail...


Jim

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04-27-2004 09:20 PM  13 years agoPost 9
dnts

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Israel

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Hi Jim,
Thanks for the tips. I will go mix some JB weld now.. I think a 14T pinion is a nice option but the Irvine has enough top-end so the 13T pinion will let it go as high as 2000 RPM for the mains (which is the reason I switched to a Raven in the first place).
I love NHP mains - they were my first carbon set and I still remember how amazed I was switching over from the stock woodies (I didn't quite believe those who told me how different it will be).
As for tail blades - I should probably try a longer set but I am afraid the wire drive will not hold under the extreme torque so this will wait for a TT upgrade (if I decide the Raven is a keeper). As for setup - I will lower the engine curves somewhat but in all fairness, I think a governor is in place here. It's just that setting one up with the Raven/Hawk is a pain.
I wonder if I can get my hands on a pair of 570's..
Nir

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HelicopterCentury Radikal G20-30 N640 Hawk Predator › How to convert a hawk sport in ccpm???
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