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CANOMOD . Experience RC . Heli-Max

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Thunder Tiger Raptors 30-90 - Imperio > RAPTOR 50 Maximum main blade size?
 
 
Jenny Tool
Heliman
Location: United Kingdom

My Posts This: Topic  Forum		can anyone tell me the maximum main blade length you can use on a Raptor 50 Titan, could you get away with a 640 on mains?
10-26-2009 09:06 AM
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spiacro
Heliman
Location: Athens, Greece

My Posts This: Topic  Forum		I don't know if I am right but I think that the maximum is 620mm.

Spiros

Raptor 30V2 TT39 Futaba 401 Futaba 9Z
10-26-2009 09:22 AM
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Ben-T-Spindle
rrProfessor
Location: Central Illinois

My Posts This: Topic  Forum		NO




Where did you get 640 blades?
Are you measuring the length correctly?

Standard length is the distance from the center of the bolthole to the tip. Some are confused and think that the length is the total blade length but that’s incorrect.




... BTS
10-26-2009 11:44 AM
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Jenny Tool
Heliman
Location: United Kingdom

My Posts This: Topic  Forum		there is a blade that SAB manufacture which is a 640 and is designed for 50-60 size helis, i didnt know how bigger blade i could have on a Raptor 50 Titan SE?
10-26-2009 12:08 PM
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rotaryfalcon
Senior Heliman
Location: Social Circle, Ga. USA

My Posts This: Topic  Forum		640s are stretching it. Unless you have a bigger engine (.55+) 620s are as big as I would use. I think a tail strike would be likely with 640s under hard flying. I fly 620s on my Pantera big block, the .70 is happy with them, my Titan with a Hyper has more pop on 600s. If your are looking for more stability 620s would be good.
10-26-2009 04:10 PM
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Jenny Tool
Heliman
Location: United Kingdom

My Posts This: Topic  Forum		i"m looking for as stable scale platform as poss, without mains and tails coming into contact, didnt know if anyone had used 640"s on a Titan SE
10-26-2009 04:22 PM
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jsenicka
Elite Veteran
Location: Hampton VA

My Posts This: Topic  Forum		you will absolutely have interference issues with blades bigger than 620 on a Titan boom

Jim Senicka
3x T700N/OS91 - 3x Vibe 50/OS55HZ - Trex 450 Pro
10-26-2009 05:24 PM
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rotaryfalcon
Senior Heliman
Location: Social Circle, Ga. USA

My Posts This: Topic  Forum		If you want to increase stability, at the cost of loosing agility, flip the grips (to leading edge control). I have one Rappy set up this way for F3C style flying. It is a whole different beast, very stable and smooth, flys like its on rails. Would be great for scale.
10-26-2009 09:08 PM
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Thumpernator
Senior Heliman
Location: Senoia, Georgia, USA

My Posts This: Topic  Forum
Quote 
If you want to increase stability, at the cost of loosing agility, flip the grips (to leading edge control).

How does this make it more stable?

Dave
Crashing is not authorized.
10-27-2009 05:28 AM
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BarracudaHockey
rrMaster
Location: Orange Park FL

My Posts This: Topic  Forum		I'm curious to know the same thing.


AMA 77227
http://www.jaxrc.com
10-27-2009 09:24 PM
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FlyingHigh450
Elite Veteran
Location: Macomb,Mi

My Posts This: Topic  Forum		The grips some how get longer when ya flip them lol.

Trex 600N/hyper 50/MP5, Revmax,Spartan DS760/JR DS8900G,3 Align DS610's.
10-27-2009 10:46 PM
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jschenck
Elite Veteran
Location: La Vista, NE.

My Posts This: Topic  Forum		If you run the 80mm tail blades you may be able to run the 640 blades. I know that *most* 620mm blades will work with *most* 92mm tail blades.

I have a set of wide chord Mavrikk tail blades that I think are 80mm.

This would be interesting to do for a 1600 HS bird, could even run the Raptor-30 gears to get the engine just over 15k rpm at 1600 HS. might be fun for a sport flyer at 1750 rpm. food for thought.

.. P-gas, T700, V50c/u, R50T, T4/250 and a Cricket ..
10-27-2009 10:52 PM
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rotaryfalcon
Senior Heliman
Location: Social Circle, Ga. USA

My Posts This: Topic  Forum		About the grip flip- I am no expert on heli dynamics but from what I understand pitch off the leading edge is correcting where as off the trailing edge not( more unstable better for, 3D). There is a difference in flight characteristics, with the leading grips. I flew the heli in question on the negative side a long time. The flip was immediately noticed. My type of flying is "big air" style (sorta F3C). I noticed FFF improved with no pitching tendencies, and the heli is just smoother in the varoius routines I fly. I also flipped my 600N and the results were similar. All my helis now control off the leading edge. My Pantera and Rappy 90 came that way. There have been many posts discussing this concept. Search it and you can get the techs about it.
10-28-2009 12:58 AM
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Thunder Tiger Raptors 30-90 - Imperio > RAPTOR 50 Maximum main blade size?
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