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Advantage Hobby . Revolution Models . CarbonXtreme

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HIROBO X-spec - Freya - Sceadu - Shuttle > EVO 50 manual mistakes??
 
 
Chibers
Heliman
Location: Dubai, UAE

I just completed my Sceadu Evo 50 and I have set up my Futaba 9C TX as directed in the manual under the FF9 50 size settings but it seems those numbers are wrong. My cyclics are reversed and collective is both reversed and extremly short (binds at 1/4 throttle). What's the deal? I have followed the instructions down to the letter, all servos are in the correct orientation and linkage length is as suggested. Has anyone had these problems with their Evo build?
06-05-2006 Over year old.
 
 
gkoutsis
Key Veteran
Location: Greek stuck in Belgium

I had the same problem with the links.

Make sure when your servo horns are at 90 with the servos, the swashplate is level, the washout mixers and all the levers are also level/parallel to each other. That will give you 0 degrees at mid stick.

George
06-05-2006 Over year old.
HOMEPAGE  
 
 
Tomas Ahl
Senior Heliman
Location: Linköping, Sweden

I don't think the manual is wrong, too many EVO 50s have been built around the world for this to be the case.

I have built two EVO 50:s myself and both were built following the manual (of course) and set up using an FF9/9C according to the manual and have been flying beautifully since. For my first EVO I don't actually know the mechanical boundaries for the collective pitch but for the second one I have +/- 10.5° with 0° on center stick. My first machine I had to trim blade tracking one turn on one pitch link before it was in track, the second machine was spot on from the building table!

Both mine have been/are HPM EVOs, I can't say about the SWM version but given how many must have been built by different people chances are the manual is correct for that one also.

Maybe you can find somebody experienced in RC helis to help you look through your helicopter for whatever is the problem?
06-05-2006 Over year old.
 
 
ThorBob
Senior Heliman
Location: Andenes, Norway

While I was building my SWM Evo I first had the same problem - I set it up for my new FF9C according to manual and collective was reversed. Well, after much pondering it turned out that while I was transferring the settings from my old 7C radio, I had managed to input my pitch curves upside-down (on the 7C the first point is the "low point", other way around on the FF9C...).

Long story short, as soon as I sorted that out I found that the settings in the manual where spot on.


Evo 50 build-up pix in my gallery
06-05-2006 Over year old.
HOMEPAGE  
 
 
Chibers
Heliman
Location: Dubai, UAE

Thanks for all the input. I'm glad I'm not the only one having problems with the settings. This is my first heli build, so I started doubting my work when everything was reversed.

I guess the linkage length in the manual is aproximate and would differ for every servo which explains the binding in the collective.

But I'm still bewildered about the cyclics being reversed. I guess the smart thing would be to have someone with more exprience have a look.
06-05-2006 Over year old.
 
 
Tomas Ahl
Senior Heliman
Location: Linköping, Sweden

You do have Futaba servos with your FF9 don't you? Are all your servos the same, non Futaba, make? And if so, are all channels needing reversing? On my first EVO 50 I had several JR servos and they had the opposite rotational direction by default.
06-05-2006 Over year old.
 
 
Chibers
Heliman
Location: Dubai, UAE

I have a Futaba Servo on the throttle (S3001), Jr DS559 on the cyclics and collective and NES 810G on the rudder. So that might very well be the reason for the reverse. You have a good point.
06-05-2006 Over year old.
 
 
BarracudaHockey
rrMaster
Location: Orange Park FL

Thomas you nailed exactly what I was going to say.

JR and Hitec's rotate opposite Futaba.


AMA 77227
http://www.jaxrc.com
06-05-2006 Over year old.
 
 
XLFLYER
Senior Heliman
Location: Denver, Colorado

For HPM Collective setup!

Inner holes on blade grips
Inner holes for the mixing arms (high mobility)
Outer holes on washout arms
Front hole on collective pitch arm
Center hole on the Collective "T" pitch push pull lever

The following measurements are from link end to link end (like in the Manual.)
Stabilizer control rod = 13mm
Mixing arm rod = 35.5mm
Collective pitch rod = 22mm

Your auto hub bolt needs to be in the top hole on the main mast!

On the collective servo horn use a wheel and mount each ball 12.5mm out from dead center of the servo wheel.

This setup will give you -11 to +11 and you will have a 3mm gap above the radius block and your washout arms and mixing arms will be perfectly level!

I would recommend dial indicating the clutch.

Do not over tighten the nut on the fuel tank fitting or you will crack the rubber tank lid.

Do not over tighten the tail rotor hub lock nuts or you WILL flair the hub and you will not be able to slide the bearings off to add grease to the thrust bearings.

Do not over tighten the radius block bolts or the plastic will crack where the guide pins go into it. If this happens pull out the metal guide on the side of the crack and sand the area that goes into the block and glue in with JB weld.

I hope this helps with any headaches!

06-07-2006 Over year old.
 
 
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HIROBO X-spec - Freya - Sceadu - Shuttle > EVO 50 manual mistakes??
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