OXAI no more ??
07-31-2016, 11:17 AM
#176
Thread Starter
Hi Dag,
I'm flying bipes.
Never flew a mono with a canaliser.
Did you try the canaliser at different incidence settings ? I'd be interested to hear what you found if you did.
Re what I'm saying above re light/heavy wings/tails;
You can have a 5000g model with a CG say at 25% where the wing weighs 1000g.
But you can have the same model at 5000g, CG at 25% and the wing weigh 700g.
Or the same model at 4700g, CG at 25% and wing at 700g.
I prefer the last one.
You can apply your set up to all 3 !!?
Brian
I'm flying bipes.
Never flew a mono with a canaliser.
Did you try the canaliser at different incidence settings ? I'd be interested to hear what you found if you did.
Re what I'm saying above re light/heavy wings/tails;
You can have a 5000g model with a CG say at 25% where the wing weighs 1000g.
But you can have the same model at 5000g, CG at 25% and the wing weigh 700g.
Or the same model at 4700g, CG at 25% and wing at 700g.
I prefer the last one.
You can apply your set up to all 3 !!?
Brian
Last edited by serious power; 07-31-2016 at 11:25 AM.
08-04-2016, 12:36 AM
#178
08-09-2016, 12:38 AM
#180
Hi Dag,
I'm flying bipes.
Never flew a mono with a canaliser.
Did you try the canaliser at different incidence settings ? I'd be interested to hear what you found if you did.
Re what I'm saying above re light/heavy wings/tails;
You can have a 5000g model with a CG say at 25% where the wing weighs 1000g.
But you can have the same model at 5000g, CG at 25% and the wing weigh 700g.
Or the same model at 4700g, CG at 25% and wing at 700g.
I prefer the last one.
You can apply your set up to all 3 !!?
Brian
I'm flying bipes.
Never flew a mono with a canaliser.
Did you try the canaliser at different incidence settings ? I'd be interested to hear what you found if you did.
Re what I'm saying above re light/heavy wings/tails;
You can have a 5000g model with a CG say at 25% where the wing weighs 1000g.
But you can have the same model at 5000g, CG at 25% and the wing weigh 700g.
Or the same model at 4700g, CG at 25% and wing at 700g.
I prefer the last one.
You can apply your set up to all 3 !!?
Brian
No, idid not try different settings of the canalizer. Because the aeroplane have a incidence at 0,3-0,5 deg and the canalizer will then have the same angle. The wing will have approx 0,4 + fuselage deck Angle 0,3-0,5= 0,7-0,9 deg. as said before With/without canalizer the the only Control surface to adjust was the rudder which become very sensetive With canalizer. So, for me its not necessary to have differnt settings of the canalizer.
The setup. weight of the plane will not matter except for the comp rules. That said, weight will be some part of the Equation of the moment of wing - tail and its surfaces. The heavier fuselage and tail, the Shorter moment.
All this thing affects how the airplane can be without trim/mix. I agree that there is no advantage to have a Heavy plane.
This is
very short !!!Regards
08-10-2016, 12:54 AM
#183
My Feedback: (1)
Hi,
I got little curious what the model weight at World Championship (WC) and European Championship (EC) F3A.
I have not found any "Equipment list" from latest WC 2015 or EC 2016 but from WC 2013 and EC 2014 I have found it.
Here is weight of all models listed in equipment lists at WC 2013 and EC 2014:
Notice not even half of the planes is under 4900 gram.
For example Christophe Paysant-Le Roux model Galactik has weight of 4900 gram, 4930 gram according to the lists in the PDF files below.
Source: attached PDF files.
Anyone has equipment list for WC 2015 and EC 2016 and weight of the models at these Championships?
/Bo
I got little curious what the model weight at World Championship (WC) and European Championship (EC) F3A.
I have not found any "Equipment list" from latest WC 2015 or EC 2016 but from WC 2013 and EC 2014 I have found it.
Here is weight of all models listed in equipment lists at WC 2013 and EC 2014:
Notice not even half of the planes is under 4900 gram.
For example Christophe Paysant-Le Roux model Galactik has weight of 4900 gram, 4930 gram according to the lists in the PDF files below.
Source: attached PDF files.
Anyone has equipment list for WC 2015 and EC 2016 and weight of the models at these Championships?
/Bo
Last edited by bem; 08-10-2016 at 01:09 AM.
08-10-2016, 02:14 AM
#185
My Feedback: (1)
My Galactika has no stress marks around the landing gear. I have flown about 200 flights with my Galactika, many of them on rough grass field.
But I reinforced my landing gear mounting plate from the start with plywood on side of fuselage so maybe that is why I have no problem (so far) with stress marks.
/Bo
But I reinforced my landing gear mounting plate from the start with plywood on side of fuselage so maybe that is why I have no problem (so far) with stress marks.
/Bo
Last edited by bem; 08-10-2016 at 07:52 AM.
08-10-2016, 02:33 AM
#186
My Galactika has no stress marks around the landing gear. I have flown about 200 flights with my Galactika, many of them on rough grass field.
But I reinforced my landing gear mounting plate from the start with plywwod on side of fuselage so maybe that is why I have no problem (so far) with stress marks.
/Bo
But I reinforced my landing gear mounting plate from the start with plywwod on side of fuselage so maybe that is why I have no problem (so far) with stress marks.
/Bo
I reinforced my Pinnacle with carbon cloth.
08-10-2016, 03:03 AM
#187
Join Date: Jan 2009
Location: NEWCASTLE, AUSTRALIA
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Hi ,
I have also reinforced the landing gear with carbon fibre brackets but the fuselage wall is so thin it just crumbles like egg shell .
It first appears like stress marks and then cracks.......not happy .I think OXAI need to improve on their design.
The fuselage side walls need to be strengthen all the way back to the wing bolts ...carbon fibre should probably do the trick...
rgds
I have also reinforced the landing gear with carbon fibre brackets but the fuselage wall is so thin it just crumbles like egg shell .
It first appears like stress marks and then cracks.......not happy .I think OXAI need to improve on their design.
The fuselage side walls need to be strengthen all the way back to the wing bolts ...carbon fibre should probably do the trick...
rgds
08-10-2016, 03:26 AM
#188
Hi ,
I have also reinforced the landing gear with carbon fibre brackets but the fuselage wall is so thin it just crumbles like egg shell .
It first appears like stress marks and then cracks.......not happy .I think OXAI need to improve on their design.
The fuselage side walls need to be strengthen all the way back to the wing bolts ...carbon fibre should probably do the trick...
rgds
I have also reinforced the landing gear with carbon fibre brackets but the fuselage wall is so thin it just crumbles like egg shell .
It first appears like stress marks and then cracks.......not happy .I think OXAI need to improve on their design.
The fuselage side walls need to be strengthen all the way back to the wing bolts ...carbon fibre should probably do the trick...
rgds
08-10-2016, 03:54 AM
#189
My Feedback: (1)
Hi ,
I have also reinforced the landing gear with carbon fibre brackets but the fuselage wall is so thin it just crumbles like egg shell .
It first appears like stress marks and then cracks.......not happy .I think OXAI need to improve on their design.
The fuselage side walls need to be strengthen all the way back to the wing bolts ...carbon fibre should probably do the trick...
rgds
I have also reinforced the landing gear with carbon fibre brackets but the fuselage wall is so thin it just crumbles like egg shell .
It first appears like stress marks and then cracks.......not happy .I think OXAI need to improve on their design.
The fuselage side walls need to be strengthen all the way back to the wing bolts ...carbon fibre should probably do the trick...
rgds
Left side:
Right side:
/Bo
Last edited by bem; 08-10-2016 at 04:25 AM.
08-19-2016, 02:51 AM
#194
My Feedback: (1)
Here it is:
First, my Galactika had no reinforcement whatsoever from factory for the plywood landing gear mounting plate (photo is taken from underside):
So since it is rather rough grass field on the flying field I fly mostly it was necessary to reinforce the landing gear plywood plate with these plywood pieces below. The larger plate is 1 millimeter plywood and the thicker plywood that actually support the original Oxai landing gear plate is 5 millimeter multilayer (10 layer) plywood:
Photos of my Galactika landing gear reinforcement taken today Aug 19 below.
Left side:
Right side:
I glued with Casco Strong Epoxy Professional (slow curing, cured fully after 24 hours in room temp) mixed with West System 403 Microfibres to make it thicker and not flow. I have used this epoxy since 1970th (named Araldite then) and is available in most shops here in my country so it is easy to find here:
/Bo
Last edited by bem; 08-21-2016 at 11:57 AM.
11-08-2016, 06:17 AM
#196
My Feedback: (3)
It looks as though F3ALorenz will not be offering new Oxai planes any longer...
http://www.f3alorenz.de/home-f3a/OXAI2016.pdf
Wir haben den Verkauf von Oxai F3A Modellen eingestellt. Der Grund warenunterschiedliche Geschäftsideen zwischen Oxai und uns. Ab sofort kann jeder direktbei Oxai sein F3A Modell bestellen. E-Mail Kontakt unter: [email protected] [email protected]. Für den Versand fügt Oxai eine sehr niedrigeVersandrechnung bei, was nicht unserer Geschäftsidee entspricht.We stopped selling Oxai pattern planes, due to different business ideas. You canorder direct by Oxai your plane: E-Mail: [email protected] [email protected]. For shipping Oxai included a very low shipping invoice
http://www.f3alorenz.de/home-f3a/OXAI2016.pdf
Wir haben den Verkauf von Oxai F3A Modellen eingestellt. Der Grund warenunterschiedliche Geschäftsideen zwischen Oxai und uns. Ab sofort kann jeder direktbei Oxai sein F3A Modell bestellen. E-Mail Kontakt unter: [email protected] [email protected]. Für den Versand fügt Oxai eine sehr niedrigeVersandrechnung bei, was nicht unserer Geschäftsidee entspricht.We stopped selling Oxai pattern planes, due to different business ideas. You canorder direct by Oxai your plane: E-Mail: [email protected] [email protected]. For shipping Oxai included a very low shipping invoice
11-15-2016, 11:50 AM
#199
What Lorenz writes is that Oxai ships planes with false invoices and he does not accept that.
False invoices is a Chinese habit to reduce import taxes. To import anything in Europe you need to pay customs fees (normally 0% for model airplanes) and VAT (in Germany 19%) on the value. By showing an invoice with smaller numbers is practically fraud.
False invoices is a Chinese habit to reduce import taxes. To import anything in Europe you need to pay customs fees (normally 0% for model airplanes) and VAT (in Germany 19%) on the value. By showing an invoice with smaller numbers is practically fraud.
11-16-2016, 02:35 AM
#200
My Feedback: (1)
What Lorenz writes is that Oxai ships planes with false invoices and he does not accept that.
False invoices is a Chinese habit to reduce import taxes. To import anything in Europe you need to pay customs fees (normally 0% for model airplanes) and VAT (in Germany 19%) on the value. By showing an invoice with smaller numbers is practically fraud.
False invoices is a Chinese habit to reduce import taxes. To import anything in Europe you need to pay customs fees (normally 0% for model airplanes) and VAT (in Germany 19%) on the value. By showing an invoice with smaller numbers is practically fraud.
However I do not think I have seen that customs in my country has set 0 % custom fee on anything airplane related shipped from outside EU into my country (in EU) unless it has been value under a specific limit.
I think our airplanes is considerad "toys" and at least in my country it is 4.7 % import fee based on invoice on such things (except under a specific value when it is no import fee on many goods including toys).
VAT one has to pay of course, based on the value on the invoice when importing (from in my case outside EU).
To not use true value on the invoice so the taxes and VAT is lower that way when importing is not good business model.
/Bo