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Re: SF33 1/6 scale

Posted: 12 Oct 2020, 23:36
by Tonyw51
G'day Peter and Hi to Stephen & Cliff,

Great to see your post on control throws as I had been mulling over that recently. It is all somewhat academic at this stage as we are still in lock-down and the field has been closed since June. I have not had the opportunity to take the model to my local model shop to discuss fit up of a couple of final items and frustration is starting to set in. Anyway, I have attached a couple of photos of my example. This is my first attempt at a scratch build and I am quite pleased with the result. (My second scratch build is a "Wood Pecker" out of RCM&E November 2017, photo attached of the maiden flight. The field was closed again in the following week).

Cheers,
Tony W
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Re: SF33 1/6 scale

Posted: 13 Oct 2020, 08:42
by Peter Balcombe
Looks very nice Tony.
I hope all goes ok when you get the chance for the maiden.
Peter

Re: SF33 1/6 scale

Posted: 13 Oct 2020, 09:16
by Cliff Evans
Looks good Tony.

Re: SF33 1/6 scale

Posted: 13 Oct 2020, 09:30
by StephenB
Nice job on the SF33 Tony, very striking colour scheme. Let us know how the maiden goes.

Re: SF33 1/6 scale

Posted: 14 Oct 2020, 01:18
by Tonyw51
Thanks. Yes I shall report the event just as soon as it can happen.

Cheers

Re: SF33 1/6 scale

Posted: 25 Nov 2020, 10:04
by Tonyw51
Hi styx2020,
I went to OfficeWorks here in Melbourne and they were able to do the job for me. I had them do 2 copies of both original and mirror so I could cut and hack.

I have had a couple of sessions at the paddock to get my fingers and brain acting together again and am now waiting on the weather to improve for the SF33 maiden post our pandemic lockdown.
Cheers,
Tonyw51

Re: SF33 1/6 scale

Posted: 14 Jan 2021, 08:08
by StephenB
I've made some progress on mine, albeit slow progress.

I'm finding that smaller models don't necessarily equate to less building time, smaller parts need careful handling and the construction is a lot more "fiddly", this model being a case in point and where anomalies and missing information also lead to confusion. At least on my part!

The build log courtesy of Peter has been a godsend and I've used it as my reference, his idea of reinforcing the trailing edge is a clever and very useful modification. The strange triangular sub spar arrangement around the wing root is hard work and seems overly complicated when a single longer tapered sub spar may have done the job, I'm sticking to the plan but it's heavy going.

Some of the specified material sizes ar also a bit odd, for instance the spar webbing is specified as 1mm ply front and back full length of the wing - overkill? I have either 0.8mm or 1.5mm available to me so will use 0.8mm.

Here's where I'm at now:

Fuselage and tail feathers more or less completed:
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First wing under construction:
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Re: SF33 1/6 scale

Posted: 14 Jan 2021, 09:11
by Peter Balcombe
Well done Stephen, its looking good :)
Don’t worry about being too precious about wood sizes. I use the nearest equivalent of a similar wood type.
So for 1mm, use 0.8mm etc.
I’m sure that back in Cliff Charlesworth’s day, he would have used imperial sizes anyway!
Peter

Re: SF33 1/6 scale

Posted: 20 Mar 2021, 15:51
by StephenB
Finally finished mine, for a smallish model it seemed to take a long time!

Fuselage covered in lightweight glass cloth and Eze-Kote, brush painted with two coats of Oraclour for the white and red. Flying surfaces covered in Easycoat seconds.

Constructed as per the plan but incorporating Peters building mods, air brakes and outrunner legs/wheels fitted, I opted to leave off the tiny tailwheel due to the less than billiard table smoothness of my landing strip and fitted a tailskid to protect the rudder. With 200g or so of lead in the nose she comes out at a smidgeon under 1900g

Motor is an Overlander Tornado 1250Kv driving an Aeronaut CamCarbon 9.5 x 6 which my wattmeter tells me is putting out 250W @30A, this coincides with ecalc. Perhaps a 10 x 6 prop would be a good idea to give me a little more margin on the power.


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Re: SF33 1/6 scale

Posted: 12 Apr 2021, 11:39
by Robcrad
Hi everyone,
I too am nearly finished building one of these, hoping it will be a gentle Sunday afternoon flyer, one question I have is how much elevator compensation are people using with the spoilers?
Once I get the fuz painted I will upload a couple of pics.
I would like to thank all the contributor's to this thread, it has made my build so much easier.

Thanks
Regards

Rob