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Old Oct 29, 2007, 11:32 AM
FPV Heli Flyer
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Wood main blade for T-rex 600 -Where to find??

I'm having a heck of a time finding a source of 600mm wood main blades for the T-rex 600. I also welcome opionions and suggestions on wich to get/avoid. I have heard the Thunder Tiger are not efficient, but I don't know for sure.

If anyone has any sources of 600mm wood main blades please post them.

Here is what I've found limited as it is;
HeliDirect.com Esmart 19.99 http://www.helidirect.com/product_in...oducts_id=2571
HeliProz.com Mavrikk 18.99 http://www.heliproz.com/prodinfo.asp?number=803415
HeliProz.com Thunder Tiger 27.99 http://www.heliproz.com/prodinfo.asp?number=132250
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Old Oct 29, 2007, 12:22 PM
nananabooboo!!
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United States, OK, Oklahoma City
Joined Mar 2003
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I hope you're not trying to do any demanding manuevers with wood blades.....
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Old Oct 29, 2007, 04:56 PM
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http://www.helikraft.com/Thunder+Tig...-+50+size.html
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Old Oct 29, 2007, 10:35 PM
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I have used these on a number of different 50 helis.

http://www.heli-world.com/detail.aspx?ID=734

They work very well. I also like that the blade covering is already removed at the root for better adhesion of the blade roots when you glue them there. I also like the blade roots they come with as their securing screws are also not on the same thrust line (makes them stronger).

Every set I have used were well balanced and without any warp. Not like a number of other woodies I have tried over the years.
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Old Oct 29, 2007, 11:10 PM
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Joined Aug 2004
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The problem I see is that wood blades have a maximum safe RPM of about 1800...While the TREX and other electrics run higher head speeds (2000+) so basically you are trying to run glow blades on an electric heli in my opinion. Not so safe I think.....Why are you wanting woodies anyways??
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Old Oct 30, 2007, 08:06 AM
FPV Heli Flyer
Joined Mar 2007
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Why woodies on T-rex 600 and where to find (?)

I want to use wood blades on my T-rex 600 electric for economic reasons. The cheapest non wood blades cost $50 where wood blades run $15-$20. I'm just getting better at forward flight and am sure crashes are in my future.

I have probably 50 flights on t-rex 450's and plenty of sim time, I have zero experience on the t-rex 600.

Folks have said that wood blades on t-rex 600 is bad, others say it's good and also cheaper.

Still looking for more opinions on the subject and blade recomendations.
-John
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Old Oct 30, 2007, 01:53 PM
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The head speed and endurance (how long it will fly on a given battery pack) of an electric is directly related to the KV spec of the motor and the motor pinion selected. (see the info on KC's sticky at the top of this forum)

There are many people that fly electrics at rotor speeds a lot less then 2100. What the 2100 head speed gives (relative to 1800 or 1600 or 1400) is faster cyclic acceleration...a plus for Extreme 3D but not necessary for sport 3D, sport aerobatics, scale flight or initial training. In fact, the lower head speeds are usually much better in these situations.

I have flown my electric Swifts (16 & 550E) at head speeds ranging from 1450 to 2300. It all depends on what you want to do with the heli. Using the same battery pack at 1450 will deliver almost 3 times more flight time then gearing it for 2300!

For geekdisk's type of flying, depending on the pinion he selects, he can easily gear his Align 600 for a comfortable head speed for his wood blades (e.g. 1650 to 1850).

As for safety - If you search the net (sights like Run Ryder and Heli Freaks), you will find there has been a BIG issue with the Align composite blades (not woodies) throwing their weights in flight and destroying helis. So blade design is also an issue here, where woodies can prove more safe then composites. P.S. Over the years, I have also found some woodies that fly better then some composites.

Another note on head speeds, is that one can also have a type of head design that may require a 2100 head speed to deliver the same cyclic response as another design does at 1800. A lot depends on the design and how it is configured.
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Old Oct 30, 2007, 02:02 PM
volts x amps = watts.
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I completely agree with syclic. Gear down the headspeed so woodies will be safe, and as an added benefit, the flight times will be longer.

The easiest way to do this would be to use a smaller pinion so you can stay in the motor's powerband, but it will spin the head slower. The second method is to just get a lower Kv motor.
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