B.P.R.

Hello racers
this is my new Q40 STREGA airmodel , i have approved the first step of approval proces , now i milling the mould with cnc and hope finisch next week . i think to build one or two models for my friends Paolo Mucedola and Frank Wong(i have called Frank in Muncie F3D WC) .....paint in the mould, two pieces tail ..ecc.. they race in Phoenix in Febbrary .
Ciao Paolo P.

vertical grimmace

My Feedback: (1)

Will you produce these in numbers? How much to get them to the USA?

B.P.R.

Yes , but first we want test fly , and if is OK we can sell........i informed when the list is open and the price .
Ciao Paolo P.

vertical grimmace

My Feedback: (1)

Good luck.

B.P.R.

I have receive the cnc plug.....now i can make the mould[sm=spinnyeyes.gif]

enriquelicea

Paolo:
It looks very nice, it is going to be a head turner, good luck in your tests and looking for worth to meat you in Phoinex
Enrique Licea
Mexico

daven

My Feedback: (1)

Looks very nice. Great job, wish I was going to see it.

wkevinm

Your project looks great.

I have one technical question. Why do you CNC a plug, as oppossed to the mold. I have seen others do this as well and I am puzzled why not straight to the mold?

Kevin M

daven

My Feedback: (1)

You can make multiple molds off a single plug, if you make a mold thats all you got.

B.P.R.

Correct
And is also more cheaper(€€)

wkevinm

I understand, I assume this is if you are manufacturing as opposed to personal use, however I do see some guys cutting aluminum molds for the purpose of manufacturing.

What material do you use to cnc the plug it looks like a plastic of sorts.

I am only asking because I am curious about the various techniques used, I am currently making a Q500 fuse and V tail plug using traditional methods (by hand) but only for personal use.

Kevin M

B.P.R.

The aluminum molds are very good, but milling aluminum mold has a very high cost......Aluminum is very expensive and it takes a long time for the milling mold.
This material I used is very cheaper and very fast milled...........It is a material-specific modeling prototypes (i dont know the name)
To build molds airmodel this technique is most excellent and that at the same time is cheaper
I had great teachers: the Germans .......and I have followed this forum http://www.rc-network.de/forum/forumdisplay.php?f=56
I used a similar technique to construct a wing of a F3D but in this case I used a different material(A little more expensive)..."Methacrylate "in this case I polished only . http://www.rcuniverse.com/forum/m_4594549/tm.htm

Ciao Paolo

wkevinm

Thanks for the information. You have a great looking Q40, Good luck with the project.

Regards, Kevin M.

djlyon

Hi Paolo

Which threads in the RC-Network forum provided you with the most information on the plug material.

Denis

Randy Etken

My Feedback: (10)

Ren board from Freeman supply. My R-200 wing molds. http://www.freemansupply.com/index.htm

B.P.R.

I dont know .[&o]..i see many time ago
You can see similar tenique for F3D Sweden Wing http://www.bahnhofbredband.se/~wb855...tima/start.htm

B.P.R.

What material?

HighPlains

My Feedback: (1)

Fantastic link Randy! What weight Ren board are you using?

Randy Etken

My Feedback: (10)

I have used two different boards light gray #5020 and red # 5179. The Ren boards have to be sanded, primed and painted after being machined to achieve a pristine surface. The gray is easy to prime and paint. The red is almost imposable to prime and paint. You need some real special products from Dura Technologies. The CNC people like this product because of the ease of machining. If I did it over I would spend the extra money and use aluminum.

oddy

Paolo,
Congratulations, very nice looking plane

If it is of any use and for you not to spend money and time, a friend of mine here in MĂ©xico submitt for approval to the AMA and NMPRA a Q40 called Extasis, which first design have winglets and they were not approved.
I see your Strega have winglets too, so I think it would be good for you to ask them before making the wing molds for preventing you to double work on your wing molds.

Good Luck and congratulations again.
VĂ*ctor Arreola.
MĂ©xico.

garys

Victor,
I believe Paulo's already receieved initial approval for the airplane.

Paulo's version of Strega is based on when it did have curved up wingtips (see the pics he attached to one of his posts). While his aren't 100% true to scale, they aren't any farther from scale than the rest of the Q40's.

Isn't the Extasis a mid-wing airplane? Which one was it based on? I don't recall any real Forumula 1 type airplanes, other the the Kelly's, having wingtips like Paulo's showing. If the airplane Extasis was based on didn't have them, the model would not be approved with them.

GS

B.P.R.

Yes correct GS
i have approved the first step of approval proces

enriquelicea

I couldn’t explained better.
Thank You GS

B.P.R.

Wing mould ready

B.P.R.

All moulds ready..[sm=bananahead.gif]