LAMA V4 Dual swashplate bell hiller modded

EQMOD · 09-08-2010, 10:54 AM

Here are some flight tests;

Extreme Fast Forward Flight tests ...

YouTube

YouTube

Ground Sweep FFFs;

YouTube

and the aileron and elevator cyclic punches ...

YouTube

mnwizard · 09-08-2010, 04:57 PM

Wow! Great stuff

Think you could put up a coupla pics of the mod so we can see your work on the head?

EQMOD · 09-08-2010, 05:00 PM

Here is the Lama V4 with the dual swashplate and a bell hiller upper rotor head system. Gone now that "errant" flybar as the flybar disc is also now controllable by the servos. Instead of just weights, the head now has paddles. No Blade strikes, No death rolls, etc. Just pure aggressive cyclics with no errant movements.

The bell hiller mechanism was completed on the existing bell head dualswash platfrom by adding a CP2 teetering flybar hub. Paddles were from a ESky CP2. This still uses the standard LAMA V4 flybar pivot hub but instead of the usual metal flybar shaft, the metal rod was removed and replaced with a smaller diameter (1mm) CF shaft (that rotates within the hub) thus allowing the paddles to pitch on the stock flybar hub.

A direct link from the upper swash to the side of the flybar hub is then added allowing the upper swashplate to pitch the paddles themselves;

EQMOD · 09-08-2010, 05:01 PM

and here is the final config. Only the head was modified. The rest still uses the stock motors, stock servos, stock shaft, stock battery, etc.

Test videos;
Tracking;

YouTube

Indoor Cyclic Punching 1;

YouTube

Indoor Cyclic Punching 2;

YouTube

With the dual swash head, even at hard cylics, both upper and lower rotor discs pitch in tandem thus blades strikes are prevented;

EQMOD · 09-08-2010, 05:03 PM

ok. The fun part - Outdoors!
here are a couple of outdoor videos doing fff bank turns. And take note of the bank angle;

even at a bank angle close to 90 degrees, the upper and lower blades are at a safe distance plus the flybar is perpendicular with the shaft as the paddles continuously controls the flybar's disc tilt based on the state of the upper swashplate.

YouTube

YouTube

YouTube

and here is one cyclic punching on a very windy environment. The windy part is towards the end of the video ....

YouTube

here is another test. this time on stability ...

YouTube

YouTube

mnwizard · 09-08-2010, 05:18 PM

Very impressive!

How long have you been working on this?

EQMOD · 09-08-2010, 05:21 PM

the dual swash part was started around 2008 but its not a continuous endeavor as i had other micros to experiment with. the bell hiller part was only done last weekend.

Tjomp · 09-09-2010, 02:36 PM

This is seriously sweet work.

You sure have the nicest flying Lama 4 on this planet.

EQMOD · 09-10-2010, 06:09 AM

thanks.

Here is one latest test flight of the Lama V4 moving around (clockwise/counterclockwise, forward, reverse, sideways, etc.) --

YouTube

Heliphill74 · 09-14-2010, 10:16 PM

can you make more of the parts for this ??? or show us how to ???

I'de love to have a setup like yours

...

Heliphill74 · 09-14-2010, 10:38 PM

never mind my last post, I think I see how you did it....

but a youtube of how to do the mod would be nice

...

RomanC · 10-02-2010, 05:22 PM

That is one insane setup. I wonder if it could be simplified greatly by using a walkera flybarless unit or just using two tiny gyros on the servos.

Luvmyhelis · 02-16-2011, 05:14 PM

I just built a Vtail brushless flybarless dual swash CX. But it uses 3 gyros. G110's. The only reason I mention it here is that EQmod helped with some insight into the first dual swash mechanical bell-hiller system on its first one I built and as we all know CX's and Lama's are only separated by a few differences. Here is the link if anyone is interested.
http://www.rcgroups.com/forums/showt...331390&page=19

The walkera will not integrate into any flybarless system as far as I can see other than their own. However the new micro Eflite flybarless electronics they just launched may work and I am looking into it. They also include a flight stability system that would eliminate some of the weaknesses of the 3 gyro setup that I am using as far as being able to hands free hover. The first three pics below are of the flybarless. The others are from the earlier mechanical system that EQ's pioneering work helped pave the way with. Sorry about the mismatched blades but I had just trashed a pair in a wreck dialing in the flybar and had temporarily reinstalled the flybar weights. Here is a link to the somewhat completed heli here since they will not allow you to double post a pic on this forum.
http://www.helifreak.com/showthread.php?t=178428&page=4

Thanks EQ for your help and insight on these projects! Without you this would not have happened.

09-08-2010, 04:57 PM	#2
mnwizard Registered Users Join Date: Oct 2007 Location: St. Paul, Minnesota	Wow! Great stuff Think you could put up a coupla pics of the mod so we can see your work on the head? __________________ - Jack Cranky old fart and charter member of ESO Lots of Helis To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

09-08-2010, 05:18 PM	#6
mnwizard Registered Users Join Date: Oct 2007 Location: St. Paul, Minnesota	Very impressive! How long have you been working on this? __________________ - Jack Cranky old fart and charter member of ESO Lots of Helis To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

09-09-2010, 02:36 PM	#8
Tjomp Registered Users My HF Map location Join Date: Apr 2009 Location: Norway	This is seriously sweet work. You sure have the nicest flying Lama 4 on this planet. __________________ Beam E4, MSH Protos, Trex-250

02-16-2011, 05:14 PM	#13
Luvmyhelis Join Date: Jul 2010 Location: spokane,washington	I just built a Vtail brushless flybarless dual swash CX. But it uses 3 gyros. G110's. The only reason I mention it here is that EQmod helped with some insight into the first dual swash mechanical bell-hiller system on its first one I built and as we all know CX's and Lama's are only separated by a few differences. Here is the link if anyone is interested. http://www.rcgroups.com/forums/showt...331390&page=19 The walkera will not integrate into any flybarless system as far as I can see other than their own. However the new micro Eflite flybarless electronics they just launched may work and I am looking into it. They also include a flight stability system that would eliminate some of the weaknesses of the 3 gyro setup that I am using as far as being able to hands free hover. The first three pics below are of the flybarless. The others are from the earlier mechanical system that EQ's pioneering work helped pave the way with. Sorry about the mismatched blades but I had just trashed a pair in a wreck dialing in the flybar and had temporarily reinstalled the flybar weights. Here is a link to the somewhat completed heli here since they will not allow you to double post a pic on this forum. http://www.helifreak.com/showthread.php?t=178428&page=4 Thanks EQ for your help and insight on these projects! Without you this would not have happened. Attached Thumbnails

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09-08-2010, 05:00 PM	#3
EQMOD Thread Starter Join Date: May 2008	Here is the Lama V4 with the dual swashplate and a bell hiller upper rotor head system. Gone now that "errant" flybar as the flybar disc is also now controllable by the servos. Instead of just weights, the head now has paddles. No Blade strikes, No death rolls, etc. Just pure aggressive cyclics with no errant movements. The bell hiller mechanism was completed on the existing bell head dualswash platfrom by adding a CP2 teetering flybar hub. Paddles were from a ESky CP2. This still uses the standard LAMA V4 flybar pivot hub but instead of the usual metal flybar shaft, the metal rod was removed and replaced with a smaller diameter (1mm) CF shaft (that rotates within the hub) thus allowing the paddles to pitch on the stock flybar hub. A direct link from the upper swash to the side of the flybar hub is then added allowing the upper swashplate to pitch the paddles themselves;

09-08-2010, 05:21 PM	#7
EQMOD Thread Starter Join Date: May 2008	the dual swash part was started around 2008 but its not a continuous endeavor as i had other micros to experiment with. the bell hiller part was only done last weekend.

09-14-2010, 10:16 PM	#10
Heliphill74 Registered Users Join Date: Sep 2010 Location: Adrian,Michigan	can you make more of the parts for this ??? or show us how to ??? I'de love to have a setup like yours ...

09-14-2010, 10:38 PM	#11
Heliphill74 Registered Users Join Date: Sep 2010 Location: Adrian,Michigan	never mind my last post, I think I see how you did it.... but a youtube of how to do the mod would be nice ...

10-02-2010, 05:22 PM	#12
RomanC Registered Users Join Date: Feb 2008	That is one insane setup. I wonder if it could be simplified greatly by using a walkera flybarless unit or just using two tiny gyros on the servos.