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Author Topic: No-cal homemade prop  (Read 984 times)
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BernardB
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« on: September 21, 2016, 01:28:29 PM »

I'm planning on building the SE5A No-cal model as can be found on the plan gallery.

I'm only wondering what kind of prop should I build for this model. I was thinking about putting on a prop i'm using for my Sainte Formula model. Prop diameter is 150 mm with a 25mm propblade chord. For my Sainte models this is a good prop but is it too small for no-cal?

The wingspan of a sainte is 330 mm.

I can always enlarge this prop but I need some advice on this.

Bernard
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Sky9pilot
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« Reply #1 on: September 21, 2016, 03:15:50 PM »

Paul Bradley has props on his NoCal plans that would work for your model. He even has an Se5a there.  He also has a pitch guage for setting up the props there as well.  Here's a link to his site: Click Here
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BernardB
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« Reply #2 on: September 21, 2016, 03:52:01 PM »

Thank you,

This will help a lot. I think I will use his plan with some small changes (I don't want to bend the round pieces). Only thing problem will be printing the plans on A4 paper. It is slightly different in size then what you use in America.

Bernard
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dorme
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« Reply #3 on: September 15, 2017, 09:51:09 AM »

Bending the 1/16" balsa on the SE5a is not really a problem.  Use a soldering iron (not gun) clamped in a vice.  Spray the balsa with water lightly and drag over the barrel of the iron as you increase the radius.  It takes some time and practice but you gain a sense of it in a short time. Spray every time you put it to the iron. It make take several passes before you complete the radius. 
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frash
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« Reply #4 on: September 15, 2017, 10:17:48 AM »

Consider building both a 150-mm dia prop and a 200-mm dia prop. Start with the smaller one, and when it works okay, try the larger one. The larger one will offer higher performance, I think, but I have never tried a biplane No-Cal. The Bradley plans site is well known and respected by everyone.

Fred Rash
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Rudder flutter
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« Reply #5 on: September 15, 2017, 04:35:08 PM »

I'm planning on building the SE5A No-cal model as can be found on the plan gallery.

I'm only wondering what kind of prop should I build for this model. I was thinking about putting on a prop i'm using for my Sainte Formula model. Prop diameter is 150 mm with a 25mm propblade chord. For my Sainte models this is a good prop but is it too small for no-cal?

The wingspan of a sainte is 330 mm.

I can always enlarge this prop but I need some advice on this.

Bernard
Hi Bernard
It sounds like you are Preparing models for Nijmegan yes?
I have just build my first Sainte and a new NoCal to compete there. I would suggest you scale the Sainte prop up to 200 mm dia. for your NoCal.

Richard Crossley
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Pit
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« Reply #6 on: September 20, 2017, 11:24:43 AM »

Bernard,
if your printer does A3, you won't have any problems.  Printing at A4, you will have to use the "Poster" or "Tile" setting in your printer settings and print at 100% or "Original/Full size".

Pete
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Snaky Stringer
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« Reply #7 on: September 21, 2017, 03:34:24 AM »

I have recently discovered that my HP A4 printer (the cheapest in the range) will print letter and legal sheets if you set it to do so in the printer software. Yours may well do the same. It is not usually possible to buy legal size paper here but one can cut sheets from A3 paper - a bit tedious but worth it in my opinion
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