in action. I think Jerry might have some sort of stand, maybe he will
comment.
I think the flybarless models use something like the UDB to stabilize. You
might be able to go flybarless and use MP-H to do the stabilization, but I
haven't tried that and I suspect we would have to play with the gains to get
things right. I think the flybarless versions are a little more efficient
since they aren't turning the paddles and possibly quicker. I don't think
quicker is necessarily a good thing when starting out. You can always take
them off later once you get some experience on it.
I have put videos up in the past on Vimeo but they expire eventually. Once
winter breaks up here I plan to do some for the MP-H release and maybe the
Quad. Jerry has some quad videos.
----- Original Message -----
From: "olly" <olly
...@gmail.com>
To: "UAVHeliBoard" <UAVHeliBoard@googlegroups.com>
Sent: Monday, February 28, 2011 4:00 PM
Subject: Re: Choosing a Heli
Hi John,
Thank you. I can go out now and buy with confidence. I note you (or
perhaps another individual in the group - I saw a pic somewhere not so
long ago of a chopper on 'training balls/kit' ) is using a flybar
model? Apparently the flybar-less are slightly more stable..?
In terms of flying skills I was thinking of trying something like this
(http://www.youtube.com/watch?v=IOCSNvJTaTs). Seems like a great idea.
If I have any luck I will post the part files (but then perhaps I am
getting a little ahead of myself. Best purchase the helli first
lol).
Incidently, I have come across some of your videos by chance on the
web. Fantastic, really helpful. I also note a few references to them/
others in the occasional thread. Is there a specific source/depository
where they can be found?
thanks for your time!
Olly
On Mar 1, 11:39 am, "John McClelland" <mcclelland.j...@gmail.com>
wrote:
> Hi Oly
> I am flying the TREX450. I have been thinking about the 600, but got side
> tracked building a Quad right now. Both the 450 and 600 platforms should
> be
> good but the 600 gets pricey. I am assuming you will go electric. There
> are good build/tune videos on the net to help you setup your heli (look
> for
> Finless videos). You will need a pitch gauge and some bubbe levels at a
> minimum. I sugget watching them in advance of putting things together.
> Then there are the LiPo batteries and chargers as you probably now by
> now....it all adds up just to get in the game.
> If you really do not have experience in flying helis, I stongly suggest
> you
> get a simulator and practice...a lot. You are pretty much guaranteed to
> crash without some simulator time under your belt. MP-H helps you learn
> once you have the basics by providing stabilization in pitch and roll. but
> if something goes wrong you will want to be able to switch to manual and
> fly
> it yourself. Once you have some sim time and feel comfortable flying,
> there
> arre some good tutorial sites you can go to and go through the basics.
> I use the Spektrum system as well. I have the DX-7 Tx and AR7000 Rx (7
> channel). I suggest you go with a 7 channel system. You will be able to
> control Throttle, 3 Swash serrvos, Rudder, Rudder gyro gain, and Mode.
> Mode
> is used for manual, stabilized, and navigation (future) in MP-H.
> In principle, you could use 6 channels by using the Heading Hold function
> of
> MP-H which bypasses the rudder gyro (in next release), but I think you may
> want the option to fly with the 401 gyro as well.
> HIL is not implimented for helis as far as I know. Marcs has worked on it.
> It just hasn't got high enough on the TODO list.
> In addition to the UDB3, you will (or might) need the following items:
> Get a few extra main rotor blades, main rotor shafts, and tail rotors and
> plan on replacing a few as you learn to fly!
> There are crash kits out there, it just depends what access you have to
> local hobby shops that stock heli parts. Ordering online can be more
> expensinve with shipping and take longer to get what you need.
> Magnetometer for Heading Hold (next release of MP-H) if you want to bypass
> 401
> Ultrasonic and barometric sensor for altitude control (under development)
> GPS (not needed until we include navigation)
> Special cables for extra input/output channel for Heading Hold (you can
> make
> them yourself)
> We may go to PPM inputs in the future for extra channels.
> OpenLog to log telemetry data in flight (very useful to diagnose problems)
> Hope this helps,
> John
> ----- Original Message -----
> From: "olly" <olly...@gmail.com>
> To: "UAVHeliBoard" <UAVHeliBoard@googlegroups.com>
> Sent: Monday, February 28, 2011 3:14 PM
> Subject: Choosing a Heli
> > Hi All
> > I just wanted to drop the group a line and ask what people are
> > currently using/ their recommendations in terms of suitable platforms.
> > My UDB3 has been sitting on my desk for a good month or two now just
> > gathering dust and finally have a little time and money on hand.
> > I have my eye on a flybar Trex600 (http://www.rchobbies.co.nz/
> > product_info.php?products_id=1814) but being quite an outlay (around
> > $1,500/2000 nz all in) I just wanted to post to the group and get some
> > feedback/thoughts
> > Is there anything I might need to consider or that might trip me up?
> > I know very little about RC helicopters (or RC in general for that
> > matter). I note your post, Peter, on EMI interference etc and the your
> > recommendation for 2.4Hgz Spektrum technology last month.
> > Any other advice would be gratefully received.
> > many thanks to all for the brilliant work. A fantastic site.
> > PS - has there been any progress on the HIL plugin for helis? this,
> > for me, would be a great place to start. Although I note on the web
> > there was quite a bit of interest in 2005/2007 from what I understand
> > this wasn't feasible for simulation of the X-Plane heli. I take it is
> > your area Marcus? I would be keen to get involved if there is some on
> > going work in this area.
> > Kind regards,
> > Oliver
