RR Rated M For Mature
HOME   rrTV-PHOTO   GALLERIES   MY GALLERY   HELP-FAQ
myHOME PM pmRR MEMBERS 730 ONLINE 18 EVENTS SEARCH REGISTER  START HERE
 
3 pages [ <<    <    ( 1 )     2      3     NEXT    >> ]1157 viewsPOST REPLY
HeliProz . Ron’s HeliProz South . MTA Hobbies

.
.
Gasser Model RC Helicopters > has anyone converted a predator gasser to flybarless?
 
 
kogibankole
Veteran
Location: albuquerque

My Posts This: Topic  Forum		I working on a FBL predator at the moment and I was wondering if anyone has done it already. Ill be using the mikado vbar electronics and 8717's. I have not decided on what to use on the tail, but im thinking futabas BL tail servo. My aim is to get a heli that runs on gasoline and that is also very 3D capable. I just got the engine upgraded to the 3D max and im running a tuned pipe. Im running a 13T pinion for a very solid 1800 w/ RT 710's or SG 720 FAI on the head. Any input would be appreciated.

if im not blade bogging youll find me pack puffing
10-11-2008 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
j.8
Veteran
Location: Denmark

My Posts This: Topic  Forum		Hi kogibankole

If your aim is to make the heli 3D capable, then
don`t use 225 gram heavy FAI blades, use something
like 175 gram blades, that will speed things a bit

Regards Bo
10-11-2008 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
kogibankole
Veteran
Location: albuquerque

My Posts This: Topic  Forum		hmm...okay. Yeah, im thinking RT 710;s would be my best bet

if im not blade bogging youll find me pack puffing
10-11-2008 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
j.8
Veteran
Location: Denmark

My Posts This: Topic  Forum		Hi

Yes, the CN267166C 710 3D are about 175-178.

I don`t know anything about the flybarless
config. but it seems to speed things up in
general.
It`s my impression that a gasser can do 3D maneuvers,
when I say 3D, I mean a maneuver where the pilot use
all 3 controles( thr/coll., cycl. and tail/rudder)
at the same time. All that is piloting skills, and
ofcause a gasser can do that, but not with the same
"stickbang speed" like a 50/90 methanol, but that`s
due to the weight, not the engien capabillity (mis spell ?)
to mailtain headspeed.
But you`ll ofcause cut down the overall weight by removing
all the flybar stuff.

It`s not cheap but it looks cool

Regards Bo
10-11-2008 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
gorn
Elite Veteran
Location: Western Australia

My Posts This: Topic  Forum		Eury did his Spectra G, used the Mikado V Stabi.
Got around vibration on the sensor with Zeal gel.
He said that it wasnt all that after he had converted.
Do a search in the flybarless section

You cant beat the cool factor though, looks slick

If you bling it, they will come :D
10-12-2008 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
kogibankole
Veteran
Location: albuquerque

My Posts This: Topic  Forum		by default the gassers are heavy, so i know what to expect.

if im not blade bogging youll find me pack puffing
10-12-2008 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
Eury
rrProfessor
Location: Ankeny, IA, USA.

My Posts This: Topic  Forum		Mine worked well, like was said above, I mounted the sensor with Zeal gel and a velcro strap over it, and the vibes didn't seem to bother it at all.

I flew it like that for a couple weeks and took it off. It worked well, but the heli really didn't fly any better than before. There was a bit more power, but the cyclic speed and stability weren't a whole lot different from the flybarred Tempest head. Because of that, I didn't see enough of an improvement to justify the cost of the hardware, and put it back to stock.

It did look cool as hell, though.

Nick Crego
Esprit Model Flight Team
10-12-2008 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
kogibankole
Veteran
Location: albuquerque

My Posts This: Topic  Forum		well after converting the trex 600N to FBL im hooked! The thing flies like an electric even at 6k ft

i miss my big 90 nitro and im hoping i can get the predator to do the job. Hey were you able to maintain continuous aileron ticktocks?

If i can get the predator to fly and do everything(maybe a little slower) ill be fine, and ill leave the vbar on.

if im not blade bogging youll find me pack puffing
10-12-2008 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
Eury
rrProfessor
Location: Ankeny, IA, USA.

My Posts This: Topic  Forum		It's not nearly as big a difference as you saw on your 600N. I converted my Spectra after doing the 600N and was pretty disappointed. The V-bar makes a huge difference on something that flies as poorly as a 600N, when you start with a great flying heli it isn't the same scale of improvement.

I can do continuous aileron tic tocs with it stock, same with tail down and nose down tic tocs. It's all in the timing. The aileron ones are easier on my Spectra than the nose or tail down, and a whole lot faster.

Nick Crego
Esprit Model Flight Team
10-12-2008 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
litespeed600
Veteran
Location: St. Charles, Missouri

My Posts This: Topic  Forum
Quote 
Im running a 13T pinion for a very solid 1800 w/ RT 710's or SG 720 FAI on the head. Any input would be appreciated.


Wouldn't you want to run a higher headspeed? I'm running 1850 on mine and I'd want 1900 to 1950 for any 3D stuff myself. (I'm not a 3D guy though.) I'll betcha just upping the headspeed will prolly be the fastest route to 3D-ville.

Tom

I'm married so you know I am no stranger to pain!
10-12-2008 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
Eury
rrProfessor
Location: Ankeny, IA, USA.

My Posts This: Topic  Forum		I agree on the headspeed. I ran 2000rpm on my Predator, and it was pretty agile, not a whole lot different in the air than my Spectra. The Spectra feels lighter, but I could do everything with my Pred that I can with the Spectra.

I ran RT 710s on it. Right up until it met the ground at EXTREMELY high speed with those blades turning 2000RPM.

Nick Crego
Esprit Model Flight Team
10-12-2008 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
kogibankole
Veteran
Location: albuquerque

My Posts This: Topic  Forum		1800 is more than enough to do 3D if you have good collective management. I should have said an average of 1800..meaning 1800 under say 9 degrees of pitch. Believe me; when that engine is revving to about 13k and the head is only spinning at 1800 you have to be very aggressive with the collective to get it to bog.

if im not blade bogging youll find me pack puffing
10-12-2008 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
Eury
rrProfessor
Location: Ankeny, IA, USA.

My Posts This: Topic  Forum		Sure it is, but it's more agile and faster responding with a higher head speed, and feels lighter in the air.

Nick Crego
Esprit Model Flight Team
10-12-2008 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
kogibankole
Veteran
Location: albuquerque

My Posts This: Topic  Forum		what do you guys prefer 1900 with bogging or a strong 1800? I prefer 1800

if im not blade bogging youll find me pack puffing
10-12-2008 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
litespeed600
Veteran
Location: St. Charles, Missouri

My Posts This: Topic  Forum		I just like the feeling of my predator at the 1850 mark. I'd go higher but there is no need, just sounds meaner. On mine anything lower and it felt kinda lathargic even for just sport flying not to mention kinda "shaky" feeling as in didn't have that solid feel. My 90 sized electric can run as low as a 1700 rpm headspeed and still feel "solid"....I guess the weight plays a part in that?

What ever you end up with get some video for us.....we like video!

Tom

I'm married so you know I am no stranger to pain!
10-12-2008 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
Eury
rrProfessor
Location: Ankeny, IA, USA.

My Posts This: Topic  Forum		If you're bogging, you need to practice collective management. I ran 2000, with +-11.5 degrees and didn't have any problems. I'm certainly nothing special when it comes to flying skills, and my Pred with the stock 231 was great. Keep in mind if your 231 is new, they keep breaking in over the first 5 gallons or so, and the power really increases towards the end of that period.

Nick Crego
Esprit Model Flight Team
10-12-2008 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
kogibankole
Veteran
Location: albuquerque

My Posts This: Topic  Forum		oh yeah for sure. Video will be on the way! I would like 1900 dont get me wrong, but from my experience with gas engines and the physics of things when dealing with 13 lb helicopters i feel that the best performance will be reached at a slightly lower hs, while taking advantage of the mad torque that these gas engines are capable of. These heavier helis dont react that quick anyways so thats why my gearing is more for torque to pull it through maneuvers.It should be interesting! I cant wait to hear the sound of that tuned pipe!

if im not blade bogging youll find me pack puffing
10-12-2008 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
kogibankole
Veteran
Location: albuquerque

My Posts This: Topic  Forum		and if at 13T it still pulls hard ill put a 14T or 15T ...remember that im at a 6k feet so my engine is loosing power.

if im not blade bogging youll find me pack puffing
10-12-2008 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
kogibankole
Veteran
Location: albuquerque

My Posts This: Topic  Forum		so im going to use 120mm blades on my predator's tail, and I would like to get a recommendation for a tail servo. I feel that the standard 50oz and .06 isnt going to be enough. Has anyone used an 8717 on the tail? I read that the vbar doesnt like 8717 at 8v for the tail, and im thinking about my other options. Im mainly looking for torque, than speed because its a heavy heli, and it wont accelerate that fast tail wise anyways. Input guys? Or maybe the bl tail from futaba might work.

if im not blade bogging youll find me pack puffing
10-13-2008 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
gorn
Elite Veteran
Location: Western Australia

My Posts This: Topic  Forum		you will fry the 8717 in short order.
Any servo that is not designed for the tail, and being used digitally, will have a very short life as a tail servo.
The refresh rate for a tail servo is far higher than a regular one, which is also why they usually cost a bit more.
The 8900g or the Futaba BLS251 or 9256 have more than enough power to push a gasser tail around.

If you bling it, they will come :D
10-13-2008 Over year old.
PROFILE   PM   EMAIL   POSTS   BUDDY   IGNORE   GALLERY
 
 
3 pages [ <<    <    ( 1 )     2      3     NEXT    >> ]1157 viewsPOST REPLY
Model Rectifier Corp . ReadyHeli . Power Helis

.
.
Gasser Model RC Helicopters > has anyone converted a predator gasser to flybarless?
 Print TOPIC Advertisers 

Subscribe to This Topic

Sunday, November 22 - 6:56 pm - Copyright © 2000 - 2009 runryder.com | email | link to rr | START HERE | NF