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Devil's Duster

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DCW30/06/2016 22:10:39
89 forum posts
28 photos

complete a pac.jpgdevils duster profile.jpgHi all.

Some years ago we had an excellent 'one stop' model shop in the Wiltshire town of Warminster. It was called Hobbies and it was run by a well known and distinguished modeller, no name dropping.. he may well read this. Hung up in the ceiling was a CAP Devils Duster, it had been there for some time with no takers. I took pity on it, made on offer for it which was duly accepted.

After dusting it off, I fitted new radio gear and an 60 2/stroke. To my amazement it handled and responded beautifully, neutrally stable but still easy to fly. Under power I could fly it at very high angles of attack without stalling and in a light wind landing was almost walking speed. Loops slow rolls etc. could be performed with ease.

Stupid like, I sold it, together with the plan a few years ago. Has anyone else had experience with this 'beast' ? Better still does anyone know where a plan could be obtained?

Happy landings

Davidcap devils duster.jpg

onetenor30/06/2016 22:41:46
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1901 forum posts

Have you tried all the plans services like Traplet Hippocket Aeronautics, Aerofred Vintage model co ans so on .Also Google for it and advertise on fleabay Amazon etc . ask on other forae too.

onetenor30/06/2016 22:42:56
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1901 forum posts

Derricks/Dereks plans collection too

stu knowles30/06/2016 22:45:44
586 forum posts
44 photos

I can't help with the DD but Pete Russells 362 & 363 Deltas are very similar and a straightforward build (there's only a wing!) He fitted retracts to his later versions which would make a very tidy model. The only kits I can think of is the Busa Northstar which is an amazing flier, land or water

cymaz30/06/2016 23:15:01
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8925 forum posts
1180 photos

Have a look through Outerzone. They have lots of plans...might find something.

DCW01/07/2016 18:33:09
89 forum posts
28 photos

Thanks guys, your comments and advice are very much appreciated. I will continue my search will all of your recommendations. If anyone has built a similar machine I would love to see it.

Keep flying, regards.

David

Percy Verance02/07/2016 09:49:53
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8108 forum posts
155 photos

I remember seeing these fly at a show 35 odd years back. I can't recall what engines those particular models were using at the time, but they certainly seemed spectacular back then.

DCW02/07/2016 11:24:55
89 forum posts
28 photos

Hi Percy.

Yes you are quite right, they were spectacular both to fly and to watch. I believe that mine was one of a trio flown at model shows in formation. The story goes that one 'pealed off' out of control and one of the pilots said 'your aircraft is gone out of control, Oops it's mine'. Whether there is any truth in that story, who knows...

Mine was initially powered by an Irvine 61, later an OS 61. Today I guess I would use a 61 or 70 four stroke to try to keep the noise down, with a tuned pipe it could be heard a mile or so away. The only problem was from 'ground effect' when landing on tarmac. It would float on it's cushion of air long after the elevons had become ineffective. To cure this I would take of on the runway and land on the grass. Being heavily involved with flying wings this is a common problem I have found when landing on a hard surface.

David

DCW08/07/2016 18:48:18
89 forum posts
28 photos

Red Dusterimg_0009.jpg

John Lee08/07/2016 21:09:46
686 forum posts
52 photos

Bob Fletcher ('AlphaBob' )with Devil's Duster Woodvale 1975. When Alpha Models was in its heyday we had a Trade Stall and did a variety of displays at Woodvale each year. I never displayed the DD but flew one on a number of occasions.

Edited By John Lee on 08/07/2016 21:10:56devils duster.jpg

Edited By John Lee on 08/07/2016 21:11:37

DCW08/07/2016 22:12:07
89 forum posts
28 photos

Thanks John.

That is one of the 'coolest' pics I have yet seen on the forum. Is that you holding back the Duster, there seems to be quite an audience in the background. I find deltas and flying wings quite fascinating and the DD was very much a favorite of mine. That's why I am looking to build another, assuming the plans are still available.

Thanks again

David

Piers Bowlan09/07/2016 06:00:16
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2001 forum posts
53 photos

It looks like it has a very rounded leading edge and thick section, perhaps this contributed to its enjoyable flying qualities. Do you recall David, if it had a symmetrical wing section? Perhaps you could design something similar yourself in the absence of a plan. It looks like it could be a simple build although the tricky bit could be getting the C of G and wing reflex right. I too have built a few flying wings over the years including a couple of O/Ds.

Great picture by the way, do you think that this example has been scaled up? There appears to be an Action Man strapped to the underside!

 

Edited By Piers Bowlan on 09/07/2016 06:26:45

DCW09/07/2016 09:09:04
89 forum posts
28 photos

Hi Piers.

Thanks for joining the thread.

Yes. I believe it was a Symmetrical wing section, Possibly a NACA 0015? If I cannot track down a plan I guess that I will have to design and build my own version, but it would be very frustrating after spending hours drawing up and building only to find that my design doesn't quite fly the same or perhaps I am just being lazy?

As to the CofG, originally it was well forward and on the first few flights elevator control was poor and the elevons had to have plenty of 'up' trim. It also it flew fast and was not particularly pleasant to fly. I then put ballast aft which brought the CofG into a much better position and never looked back.

I think that the elevons provided the reflex, mine could be trimmed to fly 'hands off'' when inverted.

I hope that the action man on Bob Fletcher's version had a parachute. I think a parachuting action man was part of the show. Might just try that myself!

The size looks about right, (56 inch span).

David

stu knowles09/07/2016 09:27:38
586 forum posts
44 photos

Here's a link to the Pete Russell 363 delta. It has a thinner wing section than the DD but is otherwise much the same.

50" span but easily photo enlarged if you want bigger. In its day a popular design and well proven.

**LINK**

Bob Cotsford09/07/2016 09:29:46
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8152 forum posts
449 photos

Peter Russell's 363 is a similar delta but with a thinner wing section, and the plans are available on Outerzone. My smaller 362 flies very nicely on a 46LA so I'd imagine the 363 could be a laugh with a cooking 60.

Ah! Stu beat me to it!

Edited By Bob Cotsford on 09/07/2016 09:30:08

cymaz09/07/2016 09:37:05
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8925 forum posts
1180 photos

I must confess I don't have much experience with all types of delta. Though the club vice-chairman scratch built one out of sheets of 1/4 balsa, just a flat wing with a box fuselage to carry radio, engine etc. flies a treat and so docile.

DCW09/07/2016 10:27:52
89 forum posts
28 photos

All very useful info.

Incidentally if anyone has built an interesting delta, we would all love to see it.

Thanks Guys.

David

Piers Bowlan10/07/2016 06:32:41
avatar
2001 forum posts
53 photos

Good luck with your search for a plan David, someone must have one stashed in the corner of their loft somewhere. Yes it would be frustrating to design and build your own version only to find that it flies like a turkey, or even worse, for the DD plan to then turn up! Still it could be fun designing your own and who knows, it could turn out better than the original. Personally I would go for a lecky powered version to start with as there is lots of scope for moving the battery about to get the C of G in the right place without adding ballast. It looks like I have talked myself into having a go at building one myself. How did that happen?!

KiwiKid10/07/2016 08:26:54
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485 forum posts
476 photos
Posted by DCW on 09/07/2016 10:27:52:

All very useful info.

Incidentally if anyone has built an interesting delta, we would all love to see it.

Thanks Guys.

David

This is my Stormfighter2 delta glider built from an RCM plan (#843). Constructed with a built up wing and a lost foam fuse. I tacked a motor on the back and she's a great flier. I thought it looked a bit Mirage-ish so went with that livery and a sort of a TSR2-ish nose.

stormy.jpg

park4.jpg

DCW10/07/2016 09:18:27
89 forum posts
28 photos

Hi Piers.

Go for it...

I have reigned myself to design and build a super DD. In this case power would come from an ASP 80 fourstroke?

Some years ago I converted one of my wings to electric. This was the Pterasoarus based on a Manx Monarch but made to look like a vintage scale aircraft, fooled a few lads. It was originally powered my a vintage OS 60 with open 'rockers', down on power compared with a modern four stroke but still good.

Electric conversion consisted of: EMAX GT3526/04, EMAX 80A ESC, and a 4 cell, (14.8v) LiPo

This was down on power even compared with a Vintage OS 60. It just takes longer to get off the ground, it is after all a powered glider! I probably should have used a more powerful motor with a 5 Cell, but this would, of course, increase both weight and cost.

Perhaps a smaller DD with a 3 cell would be a good idea?

After a bit of research last night, I think the closest match for the original wing section could have been an NACA 0010. I think that that is the wing section used on an Avro Vulcan, that's good enough for me. 10 ribs per wing, but maybe the last 2 or three ribs should be NACA 0008. Also slightly larger elevons to increase the rate of roll and a better power to weight ratio to give a more vertical climb. Hope we don't spoil it.

Pterasoarus with OS 60, I will upload a 'pic' of the aircraft in it's present guise when I next get to the flying field, whenever that is......

Bye

David

pterasouarus.jpg

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