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Rans S-9 Chaos. Peter Miller's new design blog

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Peter Miller20/07/2020 09:02:58
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11503 forum posts
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Yes, The full size has a hole behind the spinner but I felt that it might not be enough to cool the ESC and battery. So I simply took a 1" hole saw and cut the lower hole through the cowling.

I am glad that I did because when I took the battery out after the last flight it was pretty warm. MInd you,7 minutexs all at full power throwing themodel round thye sky was not giving it much rest!!.

EarlyBird20/07/2020 09:19:26
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458 forum posts
328 photos

Peter

What I particularly like is it is so unobtrusive and preserves the scale shape of the cowl.

On my Ballerina build I have altered the cowl shape for an air scoop. It looks like I could have built as per plan then done as you have.

I like a neat solution especially when it was an afterthought. Almost like doing the right thing by accident smiley

Keep the lessons coming please, it's all very interesting.

Cheers

Steve

Peter Miller20/07/2020 09:29:48
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11503 forum posts
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I contacted the owner of the fullsize aircraft to get some more photos of the colour scheme.

I have now sent him pictures of the model and I will be interested in his comments. Especially as I have pointed out the non scale intake. 

Edited By Peter Miller on 20/07/2020 09:30:24

EarlyBird20/07/2020 09:46:34
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458 forum posts
328 photos

I for one will be watching out for the owners commentsyes

Peter Miller20/07/2020 13:49:07
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11503 forum posts
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I just checked what Watts my set up was producing.

376 watts which is just about perfect for the weight of model.

The moral of this is "Never trust someone elses figures"

Geoff S20/07/2020 15:24:45
3830 forum posts
49 photos
Posted by Peter Miller on 20/07/2020 13:49:07:

I just checked what Watts my set up was producing.

376 watts which is just about perfect for the weight of model.

The moral of this is "Never trust someone elses figures"

That's a lot more likely than 25 watts

If I can shake myself out of my Covid depression this is something that appeals to me - both scale and not potentially a long build. Saves my converting from glow to electric, too - what's not to like?

Geoff

Tim C20/07/2020 17:48:25
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534 forum posts
278 photos

Peter,

That pilot looks very much like a 3d printed version of you.

Peter Miller20/07/2020 18:12:34
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11503 forum posts
1369 photos
10 articles

Tim:

In fact the pilot was one that was being made and sold on Ebay.They were superbly detailed and all different.

They were not cheap,£15 to £18 each and boght several. The painting was superb ad the details such as separate mikes and head phones.Every tooth on the zips.

I was very sorry when the chap stopped making them.

Geoff.

You will love this one. nothing hard to build and one or two new techniques

Trevor Crook21/07/2020 17:47:26
1014 forum posts
71 photos

Hmm, I was wondering about a winter project, looks like you might have provided one Peter!

Peter Miller21/07/2020 18:08:02
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11503 forum posts
1369 photos
10 articles
Posted by Trevor Crook on 21/07/2020 17:47:26:

Hmm, I was wondering about a winter project, looks like you might have provided one Peter!

Kevin has said he may bring this one to the front ofmy list,

I hope tosend in all the material this week

kc22/09/2020 16:15:12
6730 forum posts
174 photos

The plan is a free plan in the October 2020 RCME. Subscribers have the issue now so probably in the newsagents next week. Much cheaper to buy the RCME than to buy the plan alone later!

Gary Clark 122/09/2020 18:48:04
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288 forum posts
153 photos

Just seen the plan in the magazine and I'm impressed Peter. Looks like another classic PM design-great to build and great to fly! Well done sir.

It has went straight into my "to build" list

Gary

Bob Bertram22/09/2020 19:05:19
319 forum posts
33 photos

Likewise Gary!

Geoff S22/09/2020 19:32:00
3830 forum posts
49 photos

Just been looking at the plan. I wonder if Sarik (or SLEC) are going to do a CNC set of parts and an additional wood pack. I think I'd 'invest' if they did That'll be two Peter Miller designs to build over winter.

Both scale(ish). At least scale enough for me.

Geoff

Edited By Geoff S on 22/09/2020 19:32:26

William Walker22/09/2020 20:13:33
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6 forum posts
1 photos

I've looked on Sariks web site this evening and they are showing the model and listing product codes for the wood sets etc. So, hopefully they will be doing a kit soon!!

Peter Miller22/09/2020 20:51:11
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11503 forum posts
1369 photos
10 articles

Hi folks

Thanks for the interest.

I can say that it as as scale as the factory 3 views allow and Rans have ut it up on their website and the current owner of my version said that it is very accurate.

I can also say that it flies beautifully although I would suggest the first flight should be made on a calmer day. It is light and has a lot of wing area.

Geoff S23/09/2020 19:27:15
3830 forum posts
49 photos

I've been doing some minor research looking for different scale schemes for the Chaos and ended up at this Wikipedia site. Apparently Rans don't only manufacture aeroplane kits but sarted out with land yachts and, later a whole variety of both upright and recumbent pedal cycles. Seems to be a very innovative and vibrant company and I'll definitely be building one during the forthcoming winter lockdown (assuming it happens). Anyway there'll be a weather lockdown for me

A very good find, Peter.

Geoff

Peter Miller23/09/2020 21:04:32
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11503 forum posts
1369 photos
10 articles

I suggest searching Google Rans S-9 Chaos. Go to images and you will get hundreds of different pictures of them with all the variations mentioned in the article.

That is where I went.

Mine belongs to Gerry Lategan in New Zealand.

Thanks to him for the colour scheme on top of the wing

Andy Blake 128/09/2020 11:05:10
2 forum posts

i Peter,

I've just read through your Build Thread of your Rans Chaos. Please can you tell me what motor/ESC/Battery/Prop combination you used. Also which Servos you chose.

I plan to build this (It will be my very first buld) from scratch it maybe use the Sarik kit & complete over the winter.

Can you also recommend initial surface travel settings for maiden flight & suggested flight time?

Cheers in advance.

AndyB

Geoff S28/09/2020 14:44:08
3830 forum posts
49 photos

It's in the magazine article and I suspect also on 4max's web site

PO-3541-1070 motor

APC 11 x 5.5 prop

On 3s LiPo with a 40 amp esc

Geoff

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