By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by CML

Plane for new engine - any suggestions?

All Topics | Latest Posts

Search for:  in Thread Title in  
Martin Levy09/12/2018 22:16:51
56 forum posts
30 photos

Just bought a lovely 30 size four stroke. Any suggestions for a nice plane to put it in. Happy to go with any kind of plane and can scratch build

Caveman10/12/2018 00:34:11
avatar
266 forum posts
237 photos

Hi Martin, I've got an OS FS26 and I too am looking for a plane to suit.

This would be a simple build and looks like it would be suitable:

**LINK**

What do you think?

There are lots of other suitable plans on Outerzone, just have a browse.

GDB

Piers Bowlan10/12/2018 05:11:13
avatar
1887 forum posts
45 photos

Martin, the world is your oyster if you are going to scratch build! How about a Super Sixty or perhaps a Mini Super (if it is not too much for it), both available on Outerzone. I have a Ben Buckle Super Sixty kit I am planning to put my OS 30 4st in. Well, it is in the build queue at any rate!

Edited By Piers Bowlan on 10/12/2018 05:16:00

David Davis10/12/2018 06:45:41
avatar
3437 forum posts
613 photos

How about a little Tiger Moth?

**LINK**

Piers Bowlan10/12/2018 08:25:24
avatar
1887 forum posts
45 photos

Or a DB Sport and Scale Cirrus Moth kit. The video here.

Edited By Piers Bowlan on 10/12/2018 08:26:50

Peter Miller10/12/2018 08:45:26
avatar
10265 forum posts
1226 photos
10 articles

My original Peggy Sue was designed for the SC 30 FS. Totally aerobatic and a dream to fly.

Plans here

**LINK**

Peter Christy10/12/2018 08:55:47
1583 forum posts

How about a Frog Jackdaw - the much over-looked (and better IMHO) rival to the Super 60?

Designed by Eric Walpole and Stewart Uwins as a rudder only contest model, the plans show everything up to "full house" controls. Stability is more neutral than a Super 60, making it much more suited to multi-channel control, and less "floaty".

Mine is powered by an ASP 30, which provides adequate performance, and it is a delight to fly. Here's a video of its maiden flight. (The swing on take-off was caused by the prop catching in the long grass!)

 
--
Pete
 
 

Edited By Peter Christy on 10/12/2018 08:56:46

Edited By Peter Christy on 10/12/2018 08:57:44

Nigel R10/12/2018 09:26:33
avatar
3108 forum posts
479 photos

Flea Fli, recent plan in RCME and on outerzone here **LINK**

DB Stampe, on outerzone **LINK**

 

Edited By Nigel R on 10/12/2018 09:27:17

Denis Watkins10/12/2018 09:47:03
3913 forum posts
61 photos
Posted by Martin Levy on 09/12/2018 22:16:51:

Just bought a lovely 30 size four stroke. Any suggestions for a nice plane to put it in. Happy to go with any kind of plane and can scratch build

Have flown this motor on a number of models Martin, so am offering some guidelines.

5% nitro fuel is fine, but 10% does give noticeable increase in performance.

10 x 6 is maximum prop size, but my best performer was on 9 x 5 and 9 x 6

Wingspan ideally 48" to 52"

Weight 1250grms, about 2.5lb, but it will fly 3lb marginally

This is of course affected by airframe style

Bob Cotsford10/12/2018 09:55:03
avatar
8032 forum posts
444 photos

It would make a nice relaxing machine in a Junior 60, mine had an ASP30Fs. Lovely for those balmy summer evenings that we have had for the last couple of years.

ken anderson.10/12/2018 09:58:57
avatar
8454 forum posts
773 photos

hello martin...…………….. there can be only one.... a Jnr 60....it leads where others follow....

ken anderson....ne...1...Jnr dept.

Peter Miller10/12/2018 11:19:47
avatar
10265 forum posts
1226 photos
10 articles
Posted by Denis Watkins on 10/12/2018 09:47:03:
Posted by Martin Levy on 09/12/2018 22:16:51:

Just bought a lovely 30 size four stroke. Any suggestions for a nice plane to put it in. Happy to go with any kind of plane and can scratch build

Have flown this motor on a number of models Martin, so am offering some guidelines.

5% nitro fuel is fine, but 10% does give noticeable increase in performance.

10 x 6 is maximum prop size, but my best performer was on 9 x 5 and 9 x 6

Wingspan ideally 48" to 52"

Weight 1250grms, about 2.5lb, but it will fly 3lb marginally

This is of course affected by airframe style

I agree with those specifications entirely

Andrew Mawman10/12/2018 13:04:42
23 forum posts
2 photos

Or a Svenson Twinny.

Richard Harris10/12/2018 13:26:04
avatar
2058 forum posts
1892 photos
Im with Ken, have one in a Junior 60 and its a perfect match.
Giuseppe Saroli10/12/2018 13:36:30
195 forum posts
1 photos

20180414_160317.jpg

20180414_160402.jpg

Hi Martin I also had a os 26fs and was looking for a plane and went for the Playboy Senior 80

Got the plan from outerzone and a cnc router cut short kit from eBay for £50 and you get the wings rib tail ribs as the rest is all strip wood it is a lovely build and beautiful slow flyer running a 10x6 prop and a 4 oz tank it flies for ever easy 30 min on tick over

No need to hunt for thermals you know when you got one

My only worry is losing it on one as it just want come down

To date is my favourite summer plane

Regards Giuseppe

Peter Christy10/12/2018 14:08:29
1583 forum posts

Hm! Not sure I completely agree with Denis and Peter's figures for weight / span for the engine, but guess it depends what kind of performance you are after.

My Jackdaw is 60" span and weighs 4lb 12oz - considerably more than the suggested maximums, yet is clearly capable of taking off in slightly long grass, and is quite capable of loops and rolls in flight.

Agreed, it won't leave the ground like a scalded cat and climb vertically, but the performance is in character for the model. It was originally designed for a 3.5cc diesel! (And I do tend to build a bit heavy!) wink

--

Pete

Piers Bowlan10/12/2018 14:48:18
avatar
1887 forum posts
45 photos

Peter, when you say The Jackdaw is 'less floaty' than the Super 60, do you mean it penetrates better, flies faster or glides better. In any event the link for the plan is here. Nice video by the way.

Peter Christy10/12/2018 16:02:38
1583 forum posts

Piers: Pretty much all three! It has a thinner wing section than the Super 60 and less dihedral. The thinner wing gives it both better penetration and a better glide ratio, due to the reduced drag. It also means that it glides a bit faster.

I had a Super 60 a while back, and it is essentially a free-flight model with occasional radio interference! Back in the day, that made it an ideal trainer for the single-channel era! However, by the time you've modified it for ailerons (less dihedral) and perhaps reduced the incidence a tad to make it penetrate better, you end up with something pretty much indistinguishable from the Jackdaw - except it still has that draggy wing!

Don't get me wrong, the Super 60 is a fine model for its original purpose. I always felt the reduced size ones flew better, due to the higher wing-loading, though! (I've got a couple of 30" versions for Cox .049s - great fun!)

However, for modern day equipment, I think the Jackdaw is a much better design, and makes a better trainer. Its still docile enough for a novice, but not so stable that you don't learn anything from it. Its slightly higher airspeed helps enormously with penetration. I well remember my Merco 35 powered Super 60 (six channel reed gear) frequently flying backwards in any appreciable breeze!

I've done a lot more flying with it since that video was taken, and it really is very enjoyable and relaxing to fly! I've even flown it on several occasions on my "giga-ised" Grundig reed transmitter:

although as the rudder and elevator are not available simultaneously on that, it sometimes needs some nimble finger work to keep it straight on take-off!

--

Pete

Peter Christy10/12/2018 16:07:37
1583 forum posts

Should have added: Thanks for the link to the plan! You can also get laser cut rib sets for it from the nice chap at igull (on Ebay).

f:0">https://www.ebay.co.uk/itm/Frog-Jackdaw-Laser-Cut-Rib-Sets/292850831345?hash=item442f450ff1:g:-~gAAOSwxYxUrSsn:rk:1f:0

--

Pete

 

Edited By Peter Christy on 10/12/2018 16:08:10

Piers Bowlan10/12/2018 22:25:29
avatar
1887 forum posts
45 photos

I will add it to my build list Pete, but it is a pretty long list, thanks for the info. yes

All Topics | Latest Posts

Please login to post a reply.

Magazine Locator

Want the latest issue of RCM&E? Use our magazine locator link to find your nearest stockist!

Find RCM&E! 

Latest Forum Posts
Support Our Partners
Wings & Wheels 2019
Cambridge Gliding Club
electricwingman 2017
Pepe Aircraft
Gliders Distribution
Slec
CML
Advertise With Us
Sarik
Latest "For Sale" Ads
Do you use a throttle kill switch?
Q: This refers to electric-powered models but do you use a throttle kill switch?

 Yes
 No
 Sometimes
 Rarely

Latest Reviews
Digital Back Issues

RCM&E Digital Back Issues

Contact us

Contact us