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HomeAircraftHelicopterCentury Radikal G20-30 N640 Hawk Predator › Attn Century: I want more tail pitch Raven 50 Please read everyone
03-04-2008 09:45 AM  10 years agoPost 1
QuantumPSI

rrElite Veteran

Atlanta, GA

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So I just upgraded my tail to the new triple bearing metal tail grips. I originally had the plastic grips (still triple bearing though). Anyway, I have done the Raptor pitch slider mod to get more pitch and moved the balls on the plastic grip inward closer to the bearings to allow me more pitch. Unfortunately, with the metal grips, I can't do that and consequently, I don't have as much pitch as I did before. I compared the amount of pitch I could get with this new setup to my other machines (600N, 450SE, and Stratus) and all of them have a larger pitch range (especially for right pirouettes). So having thought about it, I see a few ways to get more pitch. The easier would be to make the tail shaft longer and I think this can be easily done. Century, could you please make an optional part or include longer tail rotor shafts from now on? I really want those blazingly fast pirouette rates so I can do those crazy rippers I see in the videos

I hope others read this and sign on to it cause it's a bummer to have the Raven live in the shadow of other machines. The metal head upgrade is a sleeping jewel. The 600N claims to get +/-14 collective, but I've gotten more on the Raven metal head (I'm actually gonna compare all the heads I have once I repair my Raven) as well as more than 8 degrees of pitch, and yes without binding.

One more thing, the Raven kit is $300, Century it's time to make a true Raven Pro kit. Just throw in the metal head, CF tail, metal tail, speed up gear, CF tail boom supports, metal tail gears, and a new canopy (need one of these anyway) and sell it for $420-$500. With all those upgrades, it would be hard for someone to turn away. Seriously, if you put the Raven out with that many upgrades for under $500, it will get people's attention without a question (not to mention some videos of it getting hammered on).

That's just my 2 cents. Century is sitting on a golden ticket. The Raven really does have the potential to be a great alternative to what's out there. Just make a Raven SE Pro and it'll be a wrap for the competition.

...now where was I, dh/dt = BS-dx/dt
I will fly you forever... till earth do us part

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03-04-2008 05:43 PM  10 years agoPost 2
jackheli

rrProfessor

Vancouver - Canada

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Can you post pics of your mod? just to compare it to mine.
Can't you tap the metal grips closer to the hub?

Thanks,

It's easy to find an excuse to do wrong. Hard is not to find an excuse to do right.

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03-04-2008 06:18 PM  10 years agoPost 3
Furious Predator

rrProfessor

Kitchener, Ontario, Canada

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what about using a longer output shaft?

Shawn
Team Leisure-Tech
Team HelixRC

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03-04-2008 06:22 PM  10 years agoPost 4
QuantumPSI

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Atlanta, GA

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Well the mod is actually quite simple. I put on a raptor pitch slider (because it's V shaped and won't hit control arm at extremes) and I moved the control ball on the plastic links closer to the grips.

I would love to just tap the metal arms, however the area I place the control balls are too thin to be tapped. What exactly do you want a picture of? I looked at your gallery and looked at your pictures and I pretty much did the same thing. The only difference is that I used a different brass insert than you that has a thinner back than the one you're using. I was able to get about twice as much pitch as you get when applying full right rudder.

[quote]what about using a longer output shaft?[quote]

This is what I suggested in my first post.

...now where was I, dh/dt = BS-dx/dt
I will fly you forever... till earth do us part

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03-04-2008 06:48 PM  10 years agoPost 5
Furious Predator

rrProfessor

Kitchener, Ontario, Canada

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ah, didn't see it, sorry.

i know the tail hub on the predator is the same used on the hawk/raven machines. this means the shaft is the same diameter.

i will measure the shaft length of the ones used on my predator when i get home. this might be an easy solution.

Shawn
Team Leisure-Tech
Team HelixRC

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03-04-2008 06:54 PM  10 years agoPost 6
QuantumPSI

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Atlanta, GA

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That'd be great Furious.

...now where was I, dh/dt = BS-dx/dt
I will fly you forever... till earth do us part

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03-04-2008 08:26 PM  10 years agoPost 7
Jag72

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South of Boston

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Tail Pitch...
Are you not getting a Fast Piro rate on the heli?

I am using a stock setup on my hawk 30 and the tail piro rate is perfectly fine...

if you need more authority why not just use larger tail blades instead of trying to get more pitch?

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03-04-2008 08:42 PM  10 years agoPost 8
QuantumPSI

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Atlanta, GA

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Can't say Jag, haven't have a chance to fly it yet. Will let you know though as soon as I do (gonna be a while due to weather and waiting for receivers).

...now where was I, dh/dt = BS-dx/dt
I will fly you forever... till earth do us part

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03-04-2008 08:49 PM  10 years agoPost 9
Jag72

rrProfessor

South of Boston

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WEATHER????
gonna be a while due to weather
Come on man! Take that skirt off and get out and fly...I fly almost every day regardless of temps etc...I was out flying in 10 degree weather the other day...It was balmy here this morning ...a whopping 45 when I was flying this morning...problem was the 30mph gusts though...

I thought my poor logo 10 was going to meet it's untimely end...but I managed to get 3 minutes of flying in before I called it quits

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03-04-2008 09:02 PM  10 years agoPost 10
QuantumPSI

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Atlanta, GA

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LoL, I hear you Jag but seriously, my hands can't take the cold. After about 10 minutes, my fingers get hard to move and it becomes painful. Either way though, I'm out of commission cause I sent in my 72Mhz Tx and I haven't received my 2.4 receivers yet.

...now where was I, dh/dt = BS-dx/dt
I will fly you forever... till earth do us part

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03-04-2008 09:56 PM  10 years agoPost 11
Furious Predator

rrProfessor

Kitchener, Ontario, Canada

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predator tail output shaft is 87mm long.

Shawn
Team Leisure-Tech
Team HelixRC

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03-04-2008 10:37 PM  10 years agoPost 12
jackheli

rrProfessor

Vancouver - Canada

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The problem is not fast piro flips but the tail refusing to piro while on fast forward flight etc.

It's easy to find an excuse to do wrong. Hard is not to find an excuse to do right.

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03-04-2008 11:37 PM  10 years agoPost 13
QuantumPSI

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Atlanta, GA

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Looks like the Raven tail output shaft is 76mm. With that said, anybody got a spare Predator output shaft? I would just buy one, but I don't want to get slammed with shipping for a single part.

...now where was I, dh/dt = BS-dx/dt
I will fly you forever... till earth do us part

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03-05-2008 01:00 AM  10 years agoPost 14
oldfart

rrProfessor

Vancouver, Canada

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Quantum

Have you checked out the CN2282S that was released a month or so ago. It allows mor tail rotor throw using the stock tail rotor.

jackheli,

The phenomenon you are talking about is more of a gyro issue. The tail rotor has more then enough power to pirouette in FFF. Try it with a 611 or 601 and see the difference.

A lesser gyro system will also make for stationary piros in strong winds that have a faster rate as it passes through the downwind side then the upwind side - under the same conditions, the 601/611 will keep the rate constant.

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03-05-2008 05:55 AM  10 years agoPost 15
bellecrank

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Canada

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03-05-2008 11:32 PM  10 years agoPost 16
QuantumPSI

rrElite Veteran

Atlanta, GA

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Yeah I've seen it oldfart, I have no need for it since I'm using the Raptor pitch slider. I just placed an order with Century for various items but included is the Predator output shaft. I'll try that out and how it goes and will post here with the results.

...now where was I, dh/dt = BS-dx/dt
I will fly you forever... till earth do us part

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03-07-2008 05:43 PM  10 years agoPost 17
QuantumPSI

rrElite Veteran

Atlanta, GA

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So I got the predator output shaft. It's the exact same length 77mm. Are you sure you measured correctly Furious? Did I get the wrong part?

...now where was I, dh/dt = BS-dx/dt
I will fly you forever... till earth do us part

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03-07-2008 07:29 PM  10 years agoPost 18
Furious Predator

rrProfessor

Kitchener, Ontario, Canada

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no....you got the right part, i screwed up.

i used a measuring tape to get the length, but when ever i use the measuring tape, i always start either at the 1cm, or 1inch point because it is more accurate then using the edge of the tape that just flops around...

but i screwed up when i forgot to subtract the 10mm, i just quickly glanced at it and read 87mm without thinking that i had started at the 10mm mark.

sorry about that

should see if you can just get some drill rod the same diameter and make your own.

Shawn
Team Leisure-Tech
Team HelixRC

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