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Rob Thomson

The Eedo!

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Rob Thomson

So... This model is the result of an idea in have had brewing for a while.

Essentially the idea in have had is to make hack a speedo ii apart, with the result being rather slick looking flying wing.

Simple job really... Chop the body short. Add a new fin... And assemble!

I have done mine with the flapped version of the model, as this allows full span elevator (reflex) to be added easily.

Test flights... Hopefully this week!

Sent from my Nexus 7 using Tapatalk 2

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bennyh

Looks good. Watch out for a certain glider designer who's name you've borrowed :ph34r:

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Rob Thomson

Is there one with that name already. DAMN! and I thought I was being original.

I doubt this will become a production model - maybe Oshmans will evolve the idea - but I just thought it would mKe an interesting mod on a basic speedo

Really depends now on how it flies! I suspect it may go rather well.

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Rob Thomson

Yup. Well aware of that already :-(

Assuming it flies... Ok... Then I may make some foam wings for it that are better suited.

Will see... All a general experiment :-)

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Stupot46

That's made a mighty fine looking plank! If you decide/need to make a new wing,Pw51 seems to be the favourite.

Stuart

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Phil.Taylor

Have fun with this - you will need the CofG much further forward than for the usual tailed version - start at something like 20% MAC

I tried something similar a few years back - tailed into tail-less - it was fun, when I finally got the CofG right

 

Have you seen the Sunbird into Sunboard plank video? - that goes well - look here:

 

Phil.

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Adam Richardson

Has a lot in common with the slope racer / Hammond Schwing. Like a broken boom to start with.

(joke)

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Woodstock

Has a lot in common with the slope racer / Hammond Schwing. Like a broken boom to start with.

(joke)

Ha ha, rotfl! I would get so flamed to a crisp if I tried that one :unsure:

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Rob Thomson

It flies... Rather well!

To be honest.. Almost right out the hands on the first flight!

I will post pics and video later tonight.

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Gromit

It flies... Rather well!

To be honest.. Almost right out the hands on the first flight!

I will post pics and video later tonight.

 

Still waiting :angry:   ;)

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stewartg

I want one.

Which speedo version did you chop up? Is it in stock how much?

Has it got full length elevons or four servos in the wing any idea of the weight?

Some close up pics of the mod and install would be appreciated

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Rob Thomson

I went for the flapped version of them speedo 2.

The non flapped version does not really have enough aileron length to do a decent reflex!

Spode that not does give the option of crow with the split surfaces.

I simply chopped off the tail (same length of fuselage front and back... And then glued in a suitable fin!

Reflex wise... About 2mm on the aileron, and 1mm in the flap.

Balance point is pretty much on the spar - measured next to the body.

I have another speedo iix in the shed... Am thinking of doing the same mod :-)

Guess that says how well it flies!

I do need to tweek the balance and reflex a bit.. But not much :lol:

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Rob Thomson

Finally... Will send specific balance, and install / build pics on Monday.

Family time now...

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Fubar

Looks good the  'eedo' I didnt realise they did a 4 servo wing for them

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Rob Thomson

Flapped speedo has been around now for about 6 months.

I am thinking of doing a version as follows.

2 servo wing.

V tail, with elevator right up against the wing.

So essentially the same look as the wing, but with a v tail.

The logic here is to allow the elevator to be moved off the wing. This will allow reflex to be removed, and the 2 servo wing to be used.

I have a speedo ii I have not flown for months just waiting for the mod :-)

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Scram

I bought the 4 servo wing version at the Soaring Market.  If you are considering one, take care.

 

I'm not criticising it, I have still not flown mine but the radio installation was a bit problematic.  One possible reason, as I see now reading the description on the Slopeside description, being the extra 4 layers of glass in the fuselage leaving less space than earlier versions.

 

I'm using Futaba T9C on 35MHz.  T9C means I need 7 channels if I want flaps on the throttle stick and the smallest Rx I have found is the Corona 8Ch Dual Conversion.  There is no way this will go under the plywood structure for the front wingbolt anchor.  It is necessary to get the Rx back there in order to get the elev servo back far enough to get the battery and balance lead in the front.

 

I have succeded in getting the Rx back far enough only by removing all the plastic parts of the servo plugs, then insulating each wire termination with shrink wrap and sliding them onto the appropriate pins.  The pins on the Rx would then just go under the bolt anchor. Then as per destructions the elev servo was hot glued in, battery and lead installed in the nose.  It balances  :thumbsup:

 

I looked all over for a smaller (even 2.4G 6Ch) Rx but found none.

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Rob Thomson

Hey Jerry,

I am still slightly confused why your one did not fit.

This shows an frsky 7 channel tucked right under the front of the wing, with the servo leads under the ply.

I can only think your one had a thicker ply than normal?

Then speedo iix is a tight install.. The rx pretty much is installed, then stays in!

It is however much simpler if you use a tx that can better assign channel outputs. (mpx, open9x etc) this allows the option of setting it up using a 4 channel plus server/flap reverser.

Rob

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