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Wednesday, September 30, 2015

Starting Running and Flying the RCV 58 DV Model Engine

Compact Design - 60 size 4C engine with a super low profile making it an ideal power plant for many scale projects

AT 6 Texan Installation

Engine Overview:-
The RCV - rotary cylinder valve four stroke engine represents a major advance in model engine design.
Although its moving components (piston, crank, cylinder and rotary valve) are totally conventional,
they are arranged in a radically novel configuration to provide the aero modeller with several key benefits,
whilst having similar handling characteristics to other 4-stroke model engines:-

Design Features:-
The engine still uses RCV's unique rotary valve system - which has only one extra moving component to a 2-stroke and so is easy to maintain. Its ultra low profile, means the height of this engine is approximately 18mm less (compared to OS & Magnum) & the highest point is 14 mm further back which makes cowling much easier than with other engines.

ManufactureDie Cast
Engine Type4-stroke - Glow ignition
Displacement0.58 cu inch9.5 cc
Max Power (approx.)0.85 bhp0.64 kw
Weight (exc. silencer)17.6 oz500 g
Length4.01 inch104 mm
Height - centre line axis2.64 inch67 mm
Cowling RadiusR70
Propeller shaft diameter1/4" UNF
Practical RPM range @ prop
2,400 - 12,000 rpm
Example prop sizes (2-blade)10x6, 11x6, 12x6, 13x6
Recommended Fuel10% Nitro / 15% Oil including max 6% Castor

Bench and Flight Test Video Below:-

RCV Promotional Material

Nik Harrison's Bf 110 With 2 RCV engines

Friday, September 25, 2015

Setting up Flaperons with Spektrum DXi 6 Transmitter

My big 120 size Zero has been a problem for me to land because the kit did not have landing flaps to slow the plane down when setting up a landing. I was considering modifying the wing by a adding external flaps to the lower surface trailing edge. Then the idea hit me: why not try flaperons and see if they will give me what I need.
Shown below is the script of the closed captions of a Youtube video which attempts to show how to set up flaperons on my 120 size Zero.

Kind: captions
Language: en

00:00:00.000 --> 00:00:00.500

00:00:00.500 --> 00:00:01.000

00:00:01.000 --> 00:00:01.500

00:00:01.500 --> 00:00:22.950
I finally discovered how to set up
flaperons with my dx6i spektrum

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the book was a little confusing and
the first time I tried it

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the ailerons moved in the same direction
when I activated the aileron control

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first thing you have to do is to set up
the starboard wing and take the servo

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lead and feed it into the reciever's aileron plug and then the port wing

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servo lead plug it into the reciever's
auxiliary plug

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after completing this you go to

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your transmitter and presss the adjustment wheel and you scroll through this list go to "wing

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tail mix"

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press the wheel you get three

00:02:40.250 --> 00:02:41.790

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the wing type that you have in this case
it's a dual aileron servo

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press the wheel and activate that option

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press the wheel and hold for three
seconds you go back to the home screen

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now the next

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thing to do is to set up your flaps by scrolling
to flaps in the setup list

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press the wheel and you have two choices

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normal flaps and landing flaps you have
to select

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select normal and enter some

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number of degrees or percent for normal
otherwise you will be we will have

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both of the surfaces moving the same direction
so in this case with trial and

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error I set my normal flaps to 27% could
be thirty I suppose and I chose one percent

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down elevator to correct pitch up motion
or moment for landing flaps I chose a

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hundred percent and to control the
pitching up moment I fed in 5% down

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elevator these settings seem to work and I get more or less what I'm looking for

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aileron 1

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down aileron 2 up select landing flaps and they both go down,
as well with flaps deployed I still have aileron roll control

00:06:28.620 --> 00:06:33.470
thanks I hope you have more luck your first time than I did

1) The landing flap setting had to be redced from 100% to 75% to get the desired results.
2) Before I forget, let me add that the auxillary channel had to be reversed also.