Welcome to Cowra MAC Main Club News Page


(For earlier stories see 'Archived club news')

Last Updated 21th March 2017

Cowra Model Aircraft Club flies at 'Milroy field' on the Canowindra road almost every Sunday

(see 'Who we are and where we fly')

Diesel Fuel supplies

Maris Dislers has knidly ofered to bring supplies of diesel fuel to this years OHDD event.
Two brews will be avaulable at $9.50 for a 500ml bottle.
The first brew will be a general purpose brew with 25% Castor, 1.5% ignition improver and is a good all round mix for CL and sport FF or RC engines where good top end power is desired.
The second brew is equal parts Castor, Kero and Ether plus 0.8% ignition improver. A good match for vintage and small diesels e.g. Mills, MPjet Classic, Schlosser where good backed off setting is desired.
Preorders to Maris via jamd@adam.com.au to aviod dissapointment.

David Owen Memorial Oily Hand Diesel Day 2017

Cowra MAC cordially invites you to their Oily Hand Event on the 25th ,26th& 27th of August 2017

This years Oily Hand is dedicated to David Owen. Not only will the F/F scramble trophy once again be hotly contested, but also we have chosen two of his designs for you to build for this year’s meet. You can build one, both or neither.

As usual you can scale the plans and make the model for F/F, R/C or C/L. Just so long as you adhere to the Oily Hand Engine Formula. R/C models must be powered by a diesel of any capacity or a glow of less than 1cc. C/L models must be diesel or open exhaust glow. F/F models can be diesel, small glow, CO2 or towline glider.

Don't worry if competition is not your thing, there is plenty of time for general flying. In fact this is the main activity over the weekend.

After 2:30pm on Sunday you are welcome to stay on and fly any type of model including electric and drones with CMAC’s non-oily members.

There are motels, hotels, guesthouses and caravan parks/camp grounds in both Cowra and Canowindra. www.cowratourism.com.auhttps://www.tastecanowindra.com.au/about-us/links.html


CONTACT DETAILS Andy Luckett – Oily Hand co-ordinator Ph - 0263423054 - please leave message if unanswered

All additional info and updates will be posted on Cowra website (www.cowramac.asn.au) also check Barton in Coming Events for the online discussion www.controlline.org.uk

A bit of a change in the event schedule this year. We replaced catapult glider with The Big Kev 'Abomination’ mass launch (see below).

On arriving at the field you will need to register at the clubhouse before flying.
You will need to present your MAAA card.
The parking area has been expanded and there will be plenty of car park spaces in the main paddock for all participants.
Registration fee for Oily Hand is $25. This includes the entry fee for any of the events you wish to participate in and also the 2017 Oily Hand rag.

Friday 25th
For those who like to arrive early the field is open from 10am. And yes the kettle will be on.

Saturday 26th
Start flying as soon as it is light. 7:00am – 8:30am – brekky – bacon & eggs.
12noon till 1pm - Lunch by the OHDD Master Chefs at the clubhouse kitchen.
1:00pm – Concours judging for both Fli-Bi and Magnum
1:30pm – Photo shoot for concours models
4:00pm - SAMS Scramble.
5:00pm – David Owen Memorial F/F Scramble. No other models to be flown after 4:00pm on F/F field for safety.

Sunday 27th
Flying from dawn 7:00am – 8:30am – hot breakfast at the field.
7.45am to 8:30 am – Big Kev Abomination Mass Launch on F/F field
9:30am - Plank & Super Plank Racing on centre C/L circle.
12:00 noon – Lunch and presentation.
2:30pm event officially finishes, but you can stay on and fly.

This year the model of the meet commemorates the designs of David Owen. There are two models and both are good performing sport models with straightforward builds.

Fli Bi – for F/F With its built up wings this is an advanced Ebenezer. Please contact Andy by email regarding plan availability.

Magnum – for C/L Classic profile 15 to 25 stunt model. Plan can be downloaded from Magnum CL plan Originally intended for ‘triathlon’ events it will make a competent ‘Superplank’ racer.

While OHDD 2017 is a little way off we know that there are many who need to plan ahead and book accomodation etc. It also gives you more time to build that special model

So here is a brochure that summarises all this information OHDD 2017 brochure

If you can print it off double-sided it will fold up into a pocket-size handout for you and any mates who may like to come.

3D Printing and aeromodelling

Like a lot of people these days several we have been trying to apply the new 3D print technologies to our model aeroplanes.
Some guys are already printing complete aircraft. Unfortunately our machines arn't quite up to that task (yet).
But we have been having some success.
The best thing about 3D printing technology is that once you have produced the 'STL' file it's a much more convenient way of making some things.
Materials such as PLA and ABS are not costly and seem to resist glow and diesel fuels. If you leave them to soak in either fuel they go all rubbery, but normal usage, even for small fuel tanks, they seem fine . Prints are also relatively light if you use thin walls.
Small modifications to the objects are also easy to make, and once you have sucessfully achieved what you want, a simple click of the mouse can print another copy....and another.....and another.
Although large objects may take several hours it's a lot easier to make spares in the event of a crash.
Here's a small selection some of the things we've printed so far.

Replacement dummy radial for a Veron Avro 504. Work in progress. PLA seemed a bit too brittle for the job so now reprinting in ABS Experimental engine mounts for DC Darts, one with a printed integral tank. The other one worked fine in a FF Cardinal and just needs to be refined. Wheel chocks, CL belcranks, UC straps, Cowling retainers, FPV micro camera mounts and Spools for mini free flight timers

FPV activity

CowraMAC is a club with quite a diverse range of interests.
Several members have developed qite an expertise in FPV operations. Some use Quads and others use conventional foam models.
The field suits this sort of operation and we even have the permission of surrounding landholders to overfly their properties.
The equipment for this sort of thing seems to be getting better year by year. The HD cameras we have onboard also give great aerial shots of the surrounding countryside and give you a great appreciation of the country you fly over with conventional models.
Autumn and Spring seem the best seasons for us. Winters are a bit too cold and wet and we give it away in Summer becausue of the potential fire risks associated with LiPo batteries in the case of a crash.
Recently we have been trying a bit of formtion flying with two identically eqippped FPV equipped 'Skywalkers' aircraft.
Not as easy to keep each other in view as you might imagine. Keeping the lead aircraft in shot is quite hard even when they fly straight and level at a known altitude and speed and call out when they are turning.

Aair to air shot of a skywalker from another skywalker (MG) Its not that easy! How fighter pilots manage to hit on each other during combat is a mystery (MG) Milroy field june 2015 (BR) from DJI Quadcopter

2016 (third) Cowra Cowra SPARKS fly-in Sunday 3rd April

Interested in flying electric? Got something that battery powered and flys?

This will be the third get together for electric models CowraMAC has hosted in the central west.

It will be held at our Milroy Field (map attached) and gates will open 8:00am.

Registration $10 per pilot

BBQ lunch, coffee,teas and softdrinks will be available on site.


Please bring your own chair and other comforts

Past events have been great with sharing of information and demonstrating members fixed wing models, Quads, Copters and FPV setups.

Interested? Please download the SPARKS information flyer here and the map, and program here

Please pass them around to your friends.

The 2015 (second) Cowra 'Sparks' fly in

“If it's battery powered, and it flies, bring it along”.
Following the sucessful inauguration of the event it will run on again on Sat~Sun, 28 & 29 March 2015.
SPARKS is an electric only fly-in.
There will be no competitions, just flying and having fun.
If this sounds like you, come along and ask a question or two.
We encourage the exchange of knowledge for the benefit of all aeromodellers.

08:00am - Gates open for pilot registration and setting up.
09:00am - Morning session - heli’s and multirotor’s.
12:30pm - BBQ LUNCH with tea, coffee or can of fizz.
01:30pm - Afternoon session - fixed wing aircraft.
05:00pm - Official activities end.

For further information call Mike on 02 63441764, between 5 pm and 8 pm.

The fine print.
There is a $10.00 registration fee for all pilots. This covers both days.
All pilots must register and show their valid MAAA membership card before flying.
The Safety Officer has the right to ground any pilot flying in an unsafe manner.
BBQ lunch available.
Snacks and drinks will be available all day.
Interested? Download the SPARKS information sheet; it contains directions for getting to the field, the day's program of events, important information regarding the event, and some rules of the flying field. Also available for download is our colourful flier, if you want to pin something to the notice board at your local club.

Here are the links to the Dodger for SPARKS 2015 and the Program and maps for SPARKS 2015

'Sparks' fly in reports

We had a great day at our inaugural SPARKS event this year, with 20 pilots registering. A mild sunny day with light winds ensured that there were plenty of aircraft in the air. There were many positive comments and even a few suggestions that it be run over two days next year, which we will be doing in 2015. A big thankyou to all those who participated and to those Cowra MAC members who helped out during the day. In 2015, the SPARKS event will be held on the weekend of 5th and 6th of April. Watch the SPARKS 2014 review on the Cowramac YouTube channel.

Inaugural Cowra 'Sparks' fly in

“If it's battery powered, and it flies, bring it along”. This year CowraMAC is trialing a new event. SPARKS is an electric only fly-in. For 2014, it will be held on Sunday, 13th April.
The gates will open at 8:00 am for pilot registrations and setting up you gear.
There will be sessions for fixed wing and rotary wing (helicopters and multi-rotors).
Lunch will be a BBQ at midday.
There will be no competitions, just flying and having fun.
With the rapid advances in electric flight over the past few years, those new to electric propulsion systems can be excused for being a little unsure about what motor, ESC or battery to buy for their latest ARF purchase.
If this sounds like you, come along and ask a question or two.
We encourage the exchange of knowledge for the benefit of all aeromodellers.
Interested? Download the SPARKS information sheet; it contains directions for getting to the field, the day's program of events, important information regarding the event, and some rules of the flying field. Also available for download is our colourful flier, if you want to pin something to the notice board at your local club.

Here are the links to the The dodger for SPARKS 2014

Here are the links to the The program and maps for SPARKS 2014

Cox 049 Sabre plans

Andy makes a very nice all sheet Cox 049 powered 'NA Sabre'based on a Dick Sapolus plan thats no longer available.
Its a particular favorite.When he gets going he knocks them out six at a time as a job lot.
We have had a video of the Sabre on you tube for, oh, ten months now. It has had over 1500 hits.
Early in the piece there was a "like" and a comment asking about the plan.
Andy has finally managed to find it and have it digitised, together with the instructions.

The all sheet NA Sabre. Andy and Matthew at the 2009 OHDD.

Here is a link to a pdf file of the plan and instructions.

Flying rag Experiments 15/07/12 (Andy)

If you have been folowing the discusion on the 'Barton' website in the UK, there is a bit of chat about how to set up the 'flying rag' model for OHDD 2012. Here is our progress with the design so far.....The engine used here is one of those funny little ones they call ‘product engines’ on the ebays. The grey plastic bit has been replaced with the small tank and back plate. The fuel feed currently goes to the side of the tank like it is for C/L. The fuel is 20% castor, 20% nitro. The prop is a 6x3 Cox bendy black plastic which doesn’t break on impact.

• the fuel must be running out of the tank vents with centrifugal force as the motor spins. the fuel pickup might need to be re-routed to the tank bottom. might need to try the stunt tank or attach some extended breather to the tank vents...maybe this doesn't matter.

Using a rag made of poly-cotton from the lady in the material shop down the street. I chose a nice bright red piece. Cut out a 24”x24” square and twitched it to the 049 with a couple of lengths of thin copper wire as shown in the photos. Notice it is left loose enough so the inlet at the back of the donk isn’t blocked. Initial flights weren’t so good. Trimming around 1½” from the perimeter of the rag improved things. But the best results were when the strips trimmed from the rag were tied to each corner as it is seen in the video. Not only does it fly better, it starts to look like a carnival zooming around. So some purple crepe paper was attached and this made everything better.

Here is what it should look like. How to attatch the rag to the engine and Full size rag before it was trimmed

• The rag needs to be swinging wide to make the rig stay pointing up. The spinning of the engine tends to wind the rag up until the whole rig becomes unstable and eventually turns over and dives. Watch the video.
• The solution would appear to be to stop the whole engine spinning to fast so the rag doesn’t wind up. Running the engine rich to reduce revs produced better flights as the rag didn’t wind up as quick.
• A larger prop to slow the engine – 7x3 – would help.
• Another fix might be to try a fishing swivel between the engine and the rag.

To see how it went follow the action on our own youtube channel http://'www.youtube.com/user/CowraMAC'

.... to be continued.

A good news story!

At Oily Hand last year Peter Jackson had a flyaway. Everyone knew where it went down. The theories ranged from ‘I saw it just to the left of that tree’ to vector angles and trigonometry. After much thrashing around in the waist high wheat field the search was abandoned.

Fast forward to November and it’s time to harvest canola. Matt is on the header and round and round he goes chopping up everything in his path. Unbeknown to him nestling deep in the crop is Peter’s diminutive free flighter. At the instant he turns from observing the rich black seed filling the bin and his head with dollar signs to check his tracking,he observes the distinctive shape and red wings of a model aircraft. And it is just about to pass under the giant treaded tyre. Now Matt had done his pre-harvest preparation of the old Gleaner meticulously and, with a thump and a squeak, he came to a halt only inches from crushing balsa and tissue.

The model had flown well beyond the theorist’s expectations and ended up two hundred meters into the next paddock. It had evidently settled gently into the canola and over the months worked its way down to ground level. Apart from a liberal coating of dried canola flower petals it was in perfect condition having survived frost, torrential flooding rains and the sunny days of early summer.

Matt came racing, in a state of excitement, over to where I was mowing the flying strip. He was on the ag bike and clutching something red to his chest. I couldn’t believe he had found Peter’s model and that it was in good shape. Now it just so happens that Ian LeBronne goes flying free flight with Peter on most Fridays. And as I was going to be seeing Ian the following weekend at a Pylon meet, I took charge of the model.

The following Tuesday evening I had a grateful phonecall from Peter. Apparently he had fuelled the little Cox 020 and after a few flicks it burst into life running like a dream. I recently saw Peter at the Muswellbrook Vets Gathering and he assures the model will make its comeback this year at Oily Hand.

Peters little FF'er looking only a
bit the worse for wear despite
several months in the weather

Build the all sheet Humbug by Sandi Bennie for Oily Hand Day

Click here for Humbug FF plans

This simple little model flies well and is robust. It will make a great model for the FF scramble at this year’s Oily Hand.

I built one when my son Owen was small and we had hours of fun chasing around the paddock. On one occasion it decided to head off, after a kilometre and rolling up our trousers for a river crossing we found it nestled in a lucerne paddock on the far bank. Another time it spent a week up a tree till a windstorm bought it down. A little glue and some oil and off it proudly flew again. Eventually it decided to retire and was committed to the ceremonial pyre.

By increasing the size to about 40” to 45” span (that’s about 135% to 150% on the photocopier) a Cox 049 reed valve engine can be accommodated. Of course a set of bearers and a nice diesel aren’t out of the question.

The original one we built had the 020 and needed some right thrust which is not shown on the plan. The knock-off method of attachment of the engine allows for easy adjustment of engine thrust. Further, on the plan, you will find that the cut width of the sheet for the wing is 4½” not the narrow width as shown in the wing plan. To get the dihedral, block one wingtip up 4½”.

Hope you find an opportunity to build and enjoy this little model.


PS: Also included here are three chuck glider plans. The smallest of these, Drifter, if built light is suitable for flying at the indoor on the Saturday night of Oily Hand. Any of them will be great for a bit of an early morning warm up on the Sat or Sun.

Click here for drifter glider plans