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Maricardo Plan MAG 1529

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Sparks26/02/2020 22:41:51
265 forum posts
55 photos

I'm thinking of building a Maricardo.

Can anyone tell me if the MAG 1529 plan currently available from SARIK incorporates the Paul Strawson modifications viz:

Zero Dihedral, bolt on wing and wider ailerons and rudder etc.

I have the original April 2004 RCME plan, which doesn't have the above mods. So I'm wondering if the plan has been updated during the 16 years it has taken to rise to the top of my build list!!!

Thanks, Sparks

Edited By Sparks on 26/02/2020 22:42:30

kc27/02/2020 10:08:23
6292 forum posts
170 photos

I have just studied the free pull out plan from RCME April 2004 and compared it to the original 1971 plan on Outerzone.   I found it contains certain modifications made by Strawson such as larger rudder, wing bolt plate where the aileron torque rods were, larger aileron  etc.  So I would expect the Sarik version is the modified 2004 version.

The mods are listed in the article by Whittaker which is here on the forum and also contains a link to the 2004 article by Paul Strawson.

The original Nov 1971 article by C A de Felice is here on Outerzone and the plan is a free download in it's original form.



Edited By kc on 27/02/2020 10:30:10

Edited By kc on 27/02/2020 10:32:45

kc27/02/2020 10:41:40
6292 forum posts
170 photos

Further study shows the 2004 plan also has wire u/c, hatch for wing bolt access, and no visible downthrust on engine bulkhead etc.

The original Radio Modeller plan was RM 85 (and  still listed by Sarik as X List ) , so one would expect the Mag1529 one to be the RCME 2004 version by Strawson WITH his mods.   BUT I am sure the 2004 free plan has Strawsons mods already drawn!   So you don't need to buy a new plan anyway.   View the Outerzone original and you will see the differences.

Edited By kc on 27/02/2020 10:44:49

Edited By kc on 27/02/2020 10:47:19

Edited By kc on 27/02/2020 10:49:59

Sparks27/02/2020 13:26:07
265 forum posts
55 photos

Thanks for your reply kc.

Looks like the 2004 free plan has not been fully 'Strawsonised' as the main wing still has a slight dihedral and the ailerons are 1"x1/4" instead of 1 1/2" x 3/8". As Sarik are offering 40% off the laser cut kit at the moment I succumbed. Any way, it will pass the time whilst the water is drained from our flying site at Shrewsbury.

kc27/02/2020 18:55:32
6292 forum posts
170 photos

It would appear that the fusuelage has been changed but the wing has not although it's clear the wing has been redrawn

I could not see a 40percent discount, so how did you achieve that? .

Sparks27/02/2020 19:23:35
265 forum posts
55 photos

I had a promo email. Not sure if it is still valid, but the promo code was LASER40

Give it a try, here's the link 'LASER40'

Piers Bowlan27/02/2020 20:22:32
2045 forum posts
53 photos

I bought the CNC parts for Peter Millers 'Little Miss Honky Tonk' with the 40% discount from Sarik. Very similar design to the Maricado, although it has a thinner semi-symmetrical wing. The model is not included in the list now. It's a simple model so the CNC kit is not really necessary but as LMHT was on my personal 'build list' it would have been churlish not to at the price. I have decided to do a leccy conversion just to be different.

Edited By Piers Bowlan on 27/02/2020 20:24:06

DaveB127/02/2020 22:03:44
3 forum posts
5 photos

I scratch built a Maricardo last year as my first build and fly for 40 years ! Went together easily, and really enjoyed the process, so I'm now on my third build. Added most of the Strawson mods although left half the dihedral and Electrified it. Flies really well, very forgiving to regain confidence, copes well in wind but slows up nicely. Still quite aerobatic to grow with so will remain a go to aircraft. After a few fliights I increased the aileron depth even more (to max 60mm) with some built up ones and now very happy with the response


Sparks28/02/2020 09:20:59
265 forum posts
55 photos

That's a very tidy looking model DaveB. I might well 'borrow' that colour scheme .

I'll probably go electric as well. I have a spare motor from a SLEC Funfly that was demolished in a mid- flight coming together.

kc28/02/2020 09:36:55
6292 forum posts
170 photos

Dave B, that looks an interesting version. It would be helpful if you supplied a dimensioned sketch of the revised ailerons which look as though they are standard or Strawson at tip and wider nearer the fuselage and then taper in at root. Neat and slightly unusual.

Also a note of how many watts together with motor and prop size would be interesting, and help some people

It looks like the Promo code was probably sent only to those who sign up to the special offers ( top right of this page) which I avoided as i don't like too many email promotions and ads. Maybe I should sign up.......

Redex28/02/2020 09:37:46
154 forum posts

Hi DaveB1,

Nice job, looks a really nice model. Could you supply some details of the powertrain used, LiPo/Motor/Esc


kc28/02/2020 11:14:07
6292 forum posts
170 photos

Redex. are you going to build a Maricardo? If so I will compare the Outerzone free download plan with my copy of the revised Strawson one in detail. Not many changes and a simple matter of dimensions to be noted onto the download plan which can be printed off at any copy shop.

A slight snag with midwing models is either the cockpit is built onto the wing and takes up storage space ( as in the Maricardo ) or it is a very tricky item to make removeable because it's so thin at the wing max thickness point and it's fragile. Not a reason to avoid the Maricardo etc but worth considering. Anyone thought of making a low wing Maricardo?

Redex28/02/2020 12:01:08
154 forum posts

Thanks KC for the info.

Looks like an interesting candidate, but have to finish my Galaxy Musketeer first !!

kc28/02/2020 12:10:43
6292 forum posts
170 photos

Redex, if we ever get the Brentwood field back I will bring my copy of the plan over for you to see it.  

Put some photos of the Musketeer on the forum if you can - it's an unusual model that might interest lots of people.


Edited By kc on 28/02/2020 12:19:17

kc28/02/2020 12:17:41
6292 forum posts
170 photos

Looking at the plan I notice it has spars notched for the ribs. For anyone who hasn't yet done this a good trick is to bolt together several standard hacksaw blades until you get a blade that cuts a 3/32 notch. New blades or used worn blades can be assembled to get just the right thickness, ( maybe using a spacer of some tape ) for the actual ribs you have. Then a simple jig can ensure the exact depth of cut.

Photo with simple wooden handle bolted on - just some tape would suffice.Slotting tool

Edited By kc on 28/02/2020 12:22:19

Edited By kc on 28/02/2020 12:23:24

DaveB128/02/2020 19:17:29
3 forum posts
5 photos

I used an SK3 4240 620KV motor with a 4S pack. Flown it with 13x 7 and 14x7 props pulling around 360amps. Performance is fine for this type of plane although this current draw is lower than I expected and acceleration is not exactly rapid so I've fitted a 14x10 to try next. If the weather ever improves I'll see how that works. I've set up rates to allow nice calm touch and goes on low thru to spirited response on high

I'd already built and flown with straight strip ailerons so the root and tip TE's were the same depth, so I built deeper ones tapering to this same dimension to line up

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