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A Main Hobbies . Boca Bearings . Modefo's RC Helicopters

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Align T-REX 600N 700N > T-REX 600 N ... CSM FLY-BAR-LESS conversion! (clutch mod)
 
 
hayabusa
Senior Heliman
Location: uk

Hi I have just finished assembling my 600 n I have fitted a new liner the clearance is now .203mm originally it was .635mm just to much for my liking but all the kit parts went together beautifully here are some pictures where I mounted the two 720 gyros and the simple modification to the pitch slider the slider is upside down because the push rods collide with the wash out arm pivot bolts the push rods are 2.5mm rather than 3mm because the rock city links are slightly larger with the risk of popping off I have not flown this model yet but it will be very quick.hayabusa

06-18-2007 Over year old.
 
 
Azlum
Senior Heliman
Location: Limington, ME - USA

I think those blades are a bit too small... its gonna fly like CRAP!



Looks great... take some vid of the first flights!!! You got some of us drooling!
06-19-2007 Over year old.
 
 
gordo high
Senior Heliman
Location: down yonder in the south

Hmm, I need to save a busted pair of blades and cut them off for checking pitch on a new heli. Not sure if that's what you did, but a neat Idea anyway.

Honey, I just need this one more thing and then I'm set..
06-19-2007 Over year old.
 
 
Rockohaulic
Elite Veteran
Location: Valencia, CA, USA, 3rd Rock from the Sun

Wow, I heard flybarless was much more efficient, but I had no idea you could cut half the blade off for even less drag.

Sweeeeeet!

I got a helicopter for my girlfriend,
It was a good trade!
06-19-2007 Over year old.
 
 
hayabusa
Senior Heliman
Location: uk

GO-50--CSM- fly-bar-less....The ultimate grin factor!

The main blades are 420mm its extraordinary short because my friend Spiderman likes the rapid reflex rate which helps his constipation problems to reduce his weight before he climbs the local town hall observing the local villains but on a more serious note when you have flown a fly-bar-less 50 set up you will not want a fly bar ever again it is just awesome flying and great fun, RJX fly-bar-less in my gallery.hayabusa
06-19-2007 Over year old.
 
 
ldp787
Heliman
Location: South,ILL

fitted a new liner

Hayabusa

What liner did you install?
06-19-2007 Over year old.
 
 
kingair
Key Veteran
Location: Ivins, Utah - USA

Is there a thread you can direct me to or tell me yourself how to set the gyros up for flybarless?

Is this what you're using:

http://advantagehobby.com/product.p...12&cat=0&page=1

There is a very fine line between "hobby" and "mental illness."
06-19-2007 Over year old.
HOMEPAGE  
 
 
inkspot1967
rrProfessor
Location: cranston ri.

liner looks like the r90se hd liner

Trex700e outrage 12s Solid-G
Next-D Rave
WENZEL CANOPYS
06-19-2007 Over year old.
 
 
ldp787
Heliman
Location: South,ILL

thanks inkspot!
06-19-2007 Over year old.
 
 
bobj
Veteran
Location: United Kingdom

Hi

I am sure it will work as is but I suspect you need to gear the input down with either mixer arms or a much longer arm on the blade grips, your going to loose a lot of resolution with the current set up I sespect.

Cheers
Bob J
06-19-2007 Over year old.
HOMEPAGE  
 
 
hayabusa
Senior Heliman
Location: uk

Hi bobj initially I am just test fly this set up but there is a vast amount of adjustment electronically I might have to change the blade grips to metal ones and possibly shift the arms out to centre of the head the picture is not as clear as it could be but the wash out arms are modified and are used only to drive the centre of the swash plate the pitch slider is now locked upside down because the washout arm pivot bolts collided with the push rods to the blade holder, extending the blade grip arms will be done if necessary with caution the result could be the push rods colliding again with the washout arm pivot bolts. I did this conversion to an RJX Hurrican and the model was transformed to ballistic no doubt you will convert a 600n at some time and you will have a hard time to stop flying it .hayabusa
06-20-2007 Over year old.
 
 
Patriot
Veteran
Location: Luton

I think Bobj was on about moving the ball on the blade grip away from the spindle i.e giving the control on the blade grip a long travel input for the same degree movement of the grip. so that you do not have to reduce your end points to get the desired pitch range.

Just smile
06-20-2007 Over year old.
HOMEPAGE  
 
 
hayabusa
Senior Heliman
Location: uk

FLY-BAR-LESS SET UP

Hi kingair the CSM fly-bar-less set up for a fifty size helicopter is at www.rcmodels.org/csm you will be blown away with the response and addition power this set up gives, the cycloc 1 does what it says and there is a significant improvement immediately when you go and fly I used this electronic devise first before I converted the RJX hurrican to fly-bar-less so I could compare it with my Futaba 9zhp SR3 program I will only use the cycloc 1 from now on when using Eccpm and the amazing thing is you set all the end points to maximum on the transmitter so you have maximum resolution.hayabusa

06-20-2007 Over year old.
 
 
hayabusa
Senior Heliman
Location: uk

600n clutch liner!

Hi Idp787 the liner is from multicom helicopters I believe it’s the same as a Bergen liner it is 1.5mm thick so once installed needs to be machined down to size I have found that .203mm which is .008inch is perfect. I initially tried a Raptor 90se HD liner pv0324 but gave me .406mm (.016inch) which would be ok but I wanted .203mm this set up is not biting at idle. The raptor 90se liner is ideal if you use sparingly 5min epoxy first in the clutch bell leave it for a couple of hrs then score it then 5min epoxy it again and fit the liner and use a tool socket to make sure the liner is firm against the clutch bell you might if your unlucky have to machine it to get the right clearance or lighly sand it I have done this many times on models without problems or just fit the HD liner pv0324 hopefully align will have a thicker liner on offer to us who like less clearance .hayabusa
06-20-2007 Over year old.
 
 
hayabusa
Senior Heliman
Location: uk

Pitch slider modification!

Hi bobj here is a better picture of the pitch slider modification you can see how close the push rod is to the washout pivot bolt which collide fitted the right way up if I have problems it could be tricky to get to the ultimate centre point but I will try it out and see how it goes. The RJX push rods are closer and although it is not perfectly central did not have any flying issues but thanks for your valued input you could be correct so I will fly with caution! On the first tank full. I am posting the pictures and information to encourage flyers to convert to 50 size fly-bar-less they won’t look back it is so quick if you want it but with superb stability back in the hover I really think this is the future.hayabusa

06-20-2007 Over year old.
 
 
Rick
Senior Heliman
Location: ..

Isn't that the washout base?
06-20-2007 Over year old.
 
 
bobj
Veteran
Location: United Kingdom

Hi

Patriot is correct in saying what I meant was you will loose a lot of resolution with out gearing down the input.
I suspect with your current set up that you will end up with a very compressed swash travel, I am sure the gyro's will cope with this but the model won't be able to fly as accurately as it could do.
It's a bit like putting a 30mm servo arm on your tail servo, it will work but probably not ideal:-)

Cheers
Bob
06-20-2007 Over year old.
HOMEPAGE  
 
 
hayabusa
Senior Heliman
Location: uk

Direct coupling or mixer arms!

Hi bobj and patriot I have just checked the RJX set up the feathering spindle centre to blade grip ball centre measures approx 19mm the 600n measures approx 25mm the 600n swash plate ball centers are 3mm longer than the RJX so without flight testing its possible the flying characteristic could possibly be similar I will test fly this set up anyhow. The interesting thing is I looked at the millennium wash out arms and they might give the mixing ratio you are suggesting to give more resolution I will look down this avenue after flight testing and post any results. Any one reading this don’t let this discussion stop you from going fly-bar-less the RJX I modified flew absolutely terrific using the CSM 720 gyros and cyclock 1 and had a superb locked in feel the conversion to fly-bar-less is probably the best upgrade you could add to your helicopter. hayabusa
06-21-2007 Over year old.
 
 
hayabusa
Senior Heliman
Location: uk

FLYING THE CSM FLY-BAR-LESS T REX 600N

Hi I have flown the 600n fly-bar-less this afternoon the model was locked in the hover and no stick correction was needed at all while the model sat in the hover the clutch liner was as predicted perfect with a clearance of .008th between liner and clutch the head speed was a little low at 1890 rpm but then it started raining again so flying and adjustments had to stop . The weight of my model fueled up blades fitted ready to fly was 7lb 13oz the two in one regulator is a nice bit of kit, when the weather improves I will tweak the aileron and elevator settings with my laptop to give a more aerobatic response the pitch range was set to +12 -12.hayabusa
06-24-2007 Over year old.
 
 
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Align T-REX 600N 700N > T-REX 600 N ... CSM FLY-BAR-LESS conversion! (clutch mod)
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