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HelicopterHIROBOHirobo SDX › I Will Be Flying Hirobo again this year!
02-20-2014 11:49 AM  3 years agoPost 21
tommytt1

rrVeteran

Mercerville, NJ, USA

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Wow. That is really sweet !!

Does it fly differently with the fuselage?

I made a mistake once, but I was wrong?

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02-20-2014 12:50 PM  3 years agoPost 22
payne1967

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uk

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the lipo was an outrage 2 cell and 4 months old
another one went dead and the other two i purchased at the same time are still going well 3 years later

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02-20-2014 02:21 PM  3 years agoPost 23
tommytt1

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Mercerville, NJ, USA

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I have an outrage 3cell powering a tx I have. Makes me wonder if the tx case I keep it in will withstand a fire.
It's a really old pack too.

I made a mistake once, but I was wrong?

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02-22-2014 02:52 AM  3 years agoPost 24
Agilefalcon

rrKey Veteran

Fort Worth, Texas

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The SDX, in my humble opinion, is an outstanding helicopter. In flbar form, it has probably one of the best heads in the business - fully configurable in almost every way - from paddle weight to Bell/Hiller mixing ratios.

In flybarless form, it's fantastic - I just wish that Hirobo had gotten a flybarless version of the model out there immediately it was clear that flybarless was here! With very little modification, the head could have been factory modified with little or no increase in kit cost.

Fortunately, it also takes relatively little to convert it to flybarless yourself.

I have two of them and use them for practicing new maneuvers and orientation.

Chris Berardi
Team BobbyJack's Hobbies

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02-22-2014 12:58 PM  3 years agoPost 25
tommytt1

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Mercerville, NJ, USA

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You have to excuse me, but what is so great about flybarless? I know that it's less rotating mass, lower parts count, but it seems flybar helicopters are almost unwanted .
I have seen flybar ships do any trick there is, so why doesn't anyone want them. I know a good flybarless units add quite a lot to the cost . What gives?

I made a mistake once, but I was wrong?

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02-22-2014 03:43 PM  3 years agoPost 26
DCORSAIR

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Selma, Calif.

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Oh boy, you better hang on to your rotor blades for bringing up that subject....

All eight of my Hirobo's are flybar and I never plan on changing them until the flybars are all sold out.....

D. Lee.....t.Born again.t.....

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02-22-2014 05:13 PM  3 years agoPost 27
diamondtai

rrApprentice

Hong Kong

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SDX

I would support Hirobo forever....

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02-22-2014 06:28 PM  3 years agoPost 28
Aaron29

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USA

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Flybarless has a different feel...it holds attitude and tracks extremely well. FBL requires less corrections by the pilot for wandering cyclic. It corrects attitude for wind. Very solid. Basically maintains last angle until you command something else.

But I think FBL, in giving this rock solid stability, takes something I value away. I LIKE that a flybar heli flips faster when moving faster, and pitches up when traveling very fast. Between that and the smoke, I use these cues to determine speed and thus collective management. I also get cues about rotor energy, wind direction, acceleration, etc from things that the flybar heli does, that a FBL will mask. Makes sense when you realize there is no direct connection between you and the cyclic. You fly the computer. The computer flies the heli.

I get my FBL bird out and it's FANTASTIC for HIGH SPEED maneuvers and SMACK but when I try to fly precise the lack of feedback can get in the way. It can feel vague. Don't get me wrong, I LOVE my FBL bird, too, but there's just something weird about it at times.

Course I learned on a flybar. I believe if I learned on a FBL that a flybar might feel "weird." Many (most) swear by FBL. Flybar holdout folks are in the minority.

And if you are worried about cost there's no real difference, so long as you buy a FBL model and gyro from the start...but yes CONVERTING a flybar model to FBL is expensive, because you buy a new head, gyro, and then still just have the same helicopter that flies different!

I like both for their own different reasons. I like my FBL Logo. A lot! But if you tell me I can never fly my flybarred SDX again we're gonna have issues!

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02-22-2014 07:24 PM  3 years agoPost 29
payne1967

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uk

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the main advantage of fbl ia you can have a model that is very stable yet can be very agressive at the same time
so hovering and full on 3d the heli is multi spec in one
and is a jack of all trades that can master them all

where a flybar is either stable or set up for agressive 3d
but cannot be both at the same time
or a mash between the two set ups and does neather greatly

with fbl you also have less drag on the head thus giving more usable power to the blades
flight time should also be longer fbl due to the less drag (note i said should be as it may not be so in all cases)

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02-22-2014 09:25 PM  3 years agoPost 30
tommytt1

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Mercerville, NJ, USA

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Aaron, That was a good description, and from that I will stay in the minority. I can't fly smack down, just sport flying so I like the precise feeling you spoke of. That is the main reason I recently came back to Hirobo, connected feeling and control.

I made a mistake once, but I was wrong?

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02-22-2014 09:27 PM  3 years agoPost 31
tommytt1

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Mercerville, NJ, USA

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I remember when fbl came out. I used to tell the guys that liked it at the time, fbl was a pilots aid or assisted flying. It used to get a rise out of some guys

I made a mistake once, but I was wrong?

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02-23-2014 02:04 AM  3 years agoPost 32
Aaron29

rrProfessor

USA

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FBL also picks up speed very easily as well. Whether this is good or bad depends on the situation. But it's noteworthy.

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02-26-2014 02:05 AM  3 years agoPost 33
tommytt1

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Mercerville, NJ, USA

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My sdx was built in 120 ccpm and I'm curious if anyone is flying 120 or is everyone is using 135. I really only have experience with 135/140 on my Vibe 90. It seems to be an easy change to 135 but is it worth it?

I made a mistake once, but I was wrong?

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02-26-2014 01:24 PM  3 years agoPost 34
Aaron29

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USA

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Tried both. Didn't notice a difference. So I went with 120. I stuck with 120 because the way I saw it, 120 loads the servos evenly.

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02-26-2014 03:40 PM  3 years agoPost 35
payne1967

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uk

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mine uses 120 as when it was built the radio i had didn't do 140

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02-26-2014 11:57 PM  3 years agoPost 36
trillian

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London, UK

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Hey Tommy,

Just to add my two cents worth. I remember very well when I first flew my Sceadu evo 50. I had been flying a Raptor 30 and then an Ely.Q Vision 50, so that was what I was used to. When I first flew the Sceadu I couldn't believe how accurate it felt, it was like 'wow you can get going in a straight line, take your hand off the cyclic stick and it just keeps going in a straight line!'

I was amazed at how much better it flew, until then I really didn't know how much better things could be over what I was used to.

It gave me so much confidence. Then I got a Robbe Futura SE and it was like the same kind of massive smile inducing pure fun when a heli goes right where you point it and does what you want.

Anyway, after a while though I wasn't getting the roll rate I wanted from the Sceadu and eventually retired it as I was flying .90s more by that time anyway.

Then a very well cared-for SDX airframe came along and I grabbed it. I moved all the electrics over from the Sceadu and then, as I had an urge to convert something to electric and it just so happened that a very clever motor mount was being made by a guy over here, I converted it (10-12s, Hobbywing70HV, Align 600MX motor). But otherwise it is still flybarred, GY601 gyro, 9254 tail servo, Spektrum 6040H servos on the swash, direct LiFe pack for RX power. It is outstanding! All the things I liked about the Sceadu but with nicely quick cyclic response. The rotorhead is a work of art and the whole heli just has a classy look IMHO. I treated it to a couple painted canopies for a little bling and it has very low profile skids from a JR Vibe but otherwise it's all stock (I did fit the Delrin gears and metal lower bearing block and little cosmetic touches like anodised ali washers etc.).

I intend to always keep it flybarred along with my Robbe Dyna-X as a perfect reference for how a flybarred machine should fly.

I only wish I would see more of them flying over here but I have not bumped into another SDX since many moons ago.

(I'm using the 135 degree swash because that's how it was setup when I got it and it works very well but it probably doesn't matter if you have fast/powerful servos and 120 seems to be fine on other helis)

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02-27-2014 12:22 AM  3 years agoPost 37
tommytt1

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Mercerville, NJ, USA

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Aaron and Payne, I think I'm gonna give the 120 a try. No sense changing it as I programmed it into my transmitter that way. It has some descent Hitec servos and the swash seems to go up and down evenly with the exception of at max collective, but I really don't live at max that often.

Trillion, I agree with all your assessment's of the Sceadu and always admired the way the Robbe line of helis flew (never owned one). It seems from all the feedback I've gotten from this topic the SDX is the Sceadu evolved with all the right changes. P.S. Your Sdx is looking good!

I can't wait or some descent weather so I can fly it! All I can do now is come on RR and talk to you Great Bunch of Guys(or Girls, no offence).

You Know I never listed the equiptment of my SDX, so hear it is:
Hitec 5625 MG CCPM Servos ,Futaba 9254 tail, JR DS811 Throttle, GY520 Gyro, Thunder Power Lipo 2s 2100, Perfect Regulators running 6v, failsafe switch, and onboard glow, Hyper 50, SAB50Pipe, MAH 600mm mains, and MAH tails. I'll get some pictures and post them up this weekend.

I made a mistake once, but I was wrong?

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02-27-2014 12:40 AM  3 years agoPost 38
trillian

rrVeteran

London, UK

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One other thing I was going to mention. I was told the original dampers in the SDX are very hard and in stock form it is quite agressive because of that. The guy that I bought the airframe from flies a similar style to myself, more F3C than 3D, and he had modded the dampers a bit to soften them.

Looking back, I'm sure I could have had the snappy response I wanted with the Sceadu by fitting harder dampers.

Here's my Sceadu 50. I had the ali Quick-UK headblock and grips and converted it from HPM to SWM but I preferred the way it flew as HPM.

On my SDX so far my favourite blades are a tie between the standard Radix 600s and TT 620s. I have some RJX Vector 600s that are lighter and I'll try those at some point but I suspect the Radix will still be best in windy conditions.

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02-27-2014 01:00 AM  3 years agoPost 39
payne1967

rrElite Veteran

uk

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the hpm sceadu with the carbon extreme dampers
and the pre-evo head wasn't anywhere near as crisp as the sdx head
the only way to liven the pre-evo head up and fly like the sdx is to loose the flybar

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02-27-2014 01:14 AM  3 years agoPost 40
trillian

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London, UK

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Yeah, I tried everything but changing the dampers in the Sceadu. I thought faster / more powerful servos, metal grips etc. had to make a big difference but in reality the difference was minor and it never felt as locked-in as it did in HPM mode.

On the SDX I find I need all the weights in the paddles if it's windy or it will drift a bit in big aero moves but if it's calm you can take out one pair of weights for a quicker roll rate.

I may just have a look at the dampers at some point and see what it's like with slightly harder than what's in there now.

I recently converted my Rave ENV to FBL and holy guacamole! Even with the very heavy FAI 710 Radix blades the roll rate is crazy fast.

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HelicopterHIROBOHirobo SDX › I Will Be Flying Hirobo again this year!
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