Arlecchino: New design, New concept.
Hi all; It's my pleasure to introduce you my new design for a Hi-Start or Hand launched glider fitting into the category "Mini-thermic" glider!!! Some specs: - Wingspan: 1.47 m - Length: 1m - Weigth: about 200g - 2Ch radio with 2 micro (5 to 8 grams) servos. - All Wood wing and tail; composite fuselaje The design started about 3 months ago and after a very accurate aerodinamic work in order to optimise its performances, the CATIA V5 design phase started scoping an accurate lightweigth structure design too. In order to get the maximum strngth possible combined with low weight, a geodesic structure type was decided. This structure type could be also helpfull for copying the wing shape decided in the aerodynamic phase. Hopefully the plane will be available from nov/dec 2012 into three types; Fuselaje only; ARC and furtherly ARF. Hope you guys enjoy the step-by-step photo report from today to the maiden flight video; ss you will see, many options and several solutions are to be explored during the whole work... and don't forget to comment!!!!! Regards!!
Posted on: 9/18/2012 1:02 AM by Author "guille2006" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=11232035

RE: Can YOU tune a 4 stroke by ear?
I do!!!! It's harder than a 2st cause you need to fine-tune your ear... I'm musician too so no issue with that. A tach is reccomended as pointed before by others G.
Posted on: 7/16/2012 8:21 AM by Author "guille2006" in the forum "Beginners"
http://www.rcuniverse.com/forum/fb.asp?m=11157221

RE: Gas engines on Pattern: DLE?
Cool engine setup!!!! Cool fuselage too!!!!!!
Posted on: 7/6/2012 1:02 AM by Author "guille2006" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11144909

RE: Ximango powered glider
C'mon cebola, we've seen a SR-17 flying; an F-104 and so many other "flying coffins" in our hobby... and you all are killing a Ximango project?!?!?!?! A model airplane not necessaryly has to has the same lacks than his big bro...
Posted on: 6/4/2012 3:03 AM by Author "guille2006" in the forum "RC Gliders, Sailplanes and Slope Soaring"
http://www.rcuniverse.com/forum/fb.asp?m=11105530

RE: F104g 1:4 scale
Magnifico Damiano; Un'opera d'arte!!!!!!!!!!!!
Posted on: 5/4/2012 12:03 AM by Author "guille2006" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=11067832

RE: Forward swept wing will it turn like a normal three channel?
Thanks God you have a good dihedral there; anywa you'll need a BIG rudder to counter the yaw poor stability of that wing. So: enlarge the rudder to increase yaw stability and shold be fine. Hope it helps
Posted on: 4/30/2012 6:52 AM by Author "guille2006" in the forum "Aerodynamics"
http://www.rcuniverse.com/forum/fb.asp?m=11062377

RE: Flights per Day
last year I just made 5 flights... yes, last year 2011. Sad.
Posted on: 4/24/2012 7:16 AM by Author "guille2006" in the forum "Beginners"
http://www.rcuniverse.com/forum/fb.asp?m=11054812

RE: ASP .91 > DLE-20 ??
[quote]ORIGINAL: Sport_Pilot [quote]The gas plane engine, Zenoah 20 or DLE 20 (I have both) will need only an 8 oz tank which can be placed on the CG because of the walbro carb's pump. That's a 6 oz advantage right there! [/quote] Fuel tank sizes are in Fluid Ounces.  That is a volume not weight.  The weight differences depend on the fuel.  High nitro glow fuel weighs more than gas, low nitro about the same depending on the oil used.  The differance is likely about 4 ounces weight, maybe a little more. [/quote] Using metric measuring system avoid this type confusion jejejejej!!! Thanks. Good to know that difference.
Posted on: 4/24/2012 5:07 AM by Author "guille2006" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11054661

RE: ASP .91 > DLE-20 ??
[quote]ORIGINAL: TimBle So from P = T x N it can be seen that Power and Torque are proportional for a given engine geometry at a certain N or rpm. SO if an engine produces more torque it is also producing more power. It may not be able to covert the power in speed. What you are looking at relating to each other is BMEP (brake mean effective pressure) of the engines. [/quote] Not necessaryly; but only if they produce the same RPM. normally all 2strokers are rated at high rpm (14-16K rpm) while 4 strokes at about 10 to 12. Gasser are about 8 to 9K... There is also the fact that energy available on fuels are different; this fact was already mentioned in this thread.
Posted on: 4/24/2012 4:44 AM by Author "guille2006" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11054646

RE: ASP .91 > DLE-20 ??
[quote]ORIGINAL: TimBle more torque, is more horsepower. [/quote] Not true. Just an example: a race car has about 400Hp while a truck has the same power but is capable of moving many tons. Torque is the capability of "creating force" on a single piston cycle; while power is also related to the rate of that force is being created or: Torque = Force (on top of cylinder) * Radius of crank Power = Torque * rpm = Force (on top of cylinder) * Radius of crank hope it helps... (sorry if I missed some specific word in english)
Posted on: 4/24/2012 3:19 AM by Author "guille2006" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11054593

RE: Flights per Day
[quote]ORIGINAL: MetallicaJunkie [quote]ORIGINAL: JohnBuckner Well, ''norm'' There is no such thing and there aren,t any 'rule's thats the bottom line. I fly as I posted in #2 and I do not meet any norm with students I prefer to keep the flights no more than eight minutes. Any more than that a regression soon sets in. Now when I fly my eighty inch Playboy on its lovely 35AX with a three ounce tank I can count on a minimum of thirty four minutes. When I fly the Bridi Sun Fly Three I usually can count on two hours and twentyfour minutes and thats mostly in straight line more or less. John [/quote] we need more people like you in the hobby.... on a good saturday when the flying field is full of flyers im happy if i can get atleast 5or 6 flights in about 8 hours... im usually helping with tuning/set up issues, or test flying... i love the camaraderie [/quote] Where is the "Like it" button?
Posted on: 4/24/2012 12:39 AM by Author "guille2006" in the forum "Beginners"
http://www.rcuniverse.com/forum/fb.asp?m=11054554

RE: ASP .91 > DLE-20 ??
I'd check (besides of power) the weight of the whole engine including ignition. DLE 20+all gear is for sure heevier than the ASP91. You might consider to place there some 4 stroke. I changed a 91 by a OS120III succesfully with out any issue except for 15 grams of lead on the tail... Make a simulation; place the weight of the desired DLE20 on the nose of the plane and check the CoG. Regarding to the power; I'm not the pserson who knows the DLE20, but I'd bet my trousers that you'll be flying slower but with "infinite" vertical performances thatnks to more torke (bigger propeller Ø). Hope it helps!!!
Posted on: 4/24/2012 12:37 AM by Author "guille2006" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11054552

RE: ESM Dornier DO 335
[quote]ORIGINAL: ticketec You boys are evil[:D] I haven't really finished with my Dora yet, and I promised myself I wouldn't buy another model until I finished my Lancaster.... ...if he dropps his price a little more I might[8D] [/quote] Hey Ticketeck; can you tell more about the lancaster yo are doing?!?!
Posted on: 4/12/2012 10:57 PM by Author "guille2006" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11039870

RE: Home Brew After-Run Oil
[quote]ORIGINAL: spaceworm [quote]ORIGINAL: guille2006 [/quote] I think your ''hydraulic transmission oil'' would otherwise be known as ATF? Some manual transmissions (Porsche balk-ring synchronizer type) would be rendered inoperable by the MoS2 you added and MoS2 was counter-indicated by Porsche for that reason. But then, ATF was not (then) cited for use for manual trannies
Posted on: 4/12/2012 10:35 PM by Author "guille2006" in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=11039858

RE: Color scheme on Bravo from lorenz
What to say? Just EXCELENT!!!!!!!!!!!!!!!
Posted on: 4/12/2012 5:55 AM by Author "guille2006" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11038716

RE: Home Brew After-Run Oil
[quote]ORIGINAL: william hanshaw I've heard recently that some guys make their own after-run oil by mixing some ratio of Marvel Mystery Oil and good-quality Valvoline transmission fluid.  The expensive after-run oil I purchased some time back looks just like MMO with its red color and odor.  Does someone agree with this, and if so, what's the best ratio of MMO and transmission fluid to mix? Anyone? [/quote] Well; 7 to 5 year ago I used to sell an after run oil made of 98% hydraulic transmission oil + 2% molycote oil (basically a bi-sulfide of molybdenum + oil mixture). Result were EXCELENT!!!!!. I carried on several test on the hydraulic transmission only wit two engines for comparison (supertigre 40); one with after run treatment, nothing for the other. Results were that, after some time (I have no the records here) the after runned one started as good as new while the second needed more handflips... there was a small rpm decrease too (maybe 200 rpm or so). Glow plug was substancially more clean on the first engine while the second one was more black. Conclusion: Hydraulic oil is as good as any after run oil. Hope my expereince it helps the the thread. Cheers
Posted on: 4/12/2012 12:23 AM by Author "guille2006" in the forum "Everything Diesel"
http://www.rcuniverse.com/forum/fb.asp?m=11038548

RE: ARGENTINEAN NATS
EXCELENTE!!!!!!!!!!!!!!!!! felicitaciones por la organizacion y presentacion de todo!!!!!!!!!! Un abrazo Mario!!!!!!!!!!!
Posted on: 4/11/2012 8:21 AM by Author "guille2006" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11037548

RE: Radiance F3A - new pattern kit
Alex; what servo are mounting on the stab? It's inside the stab; isn't? Great Plane!!!
Posted on: 4/2/2012 10:47 PM by Author "guille2006" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11026127

RE: Radiance F3A - new pattern kit
If you keep the CG in the same position, nothing will change since the the CG regards the glider and not how is powered. Just for safety and as shall be done in any plane, you can start from the forward position and furtherly (if needed) move it backwards.
Posted on: 3/29/2012 1:04 AM by Author "guille2006" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11019524

RE: Bigger is better than yours.
[quote]ORIGINAL: scale only 4 me What nice about my models is I build them to satisfy myself,, building them large enough or detailed enough to impress anyone else is not my goal [/quote] +1!!!!!!!!! I keep the water separated... what is scale is scale a for my satisfaction only; the 1/48 I have are 10 times more detailed than many RC scale. In RC I just go Pattern, so no scale at all.
Posted on: 3/5/2012 1:01 AM by Author "guille2006" in the forum "RC Scale Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=10986950

RE: Ability to draw plans?
[quote]ORIGINAL: Avaiojet Funny. [:D] (...) CAD. You really don't need it to draw model airplane plans or to build them. Plans and model building has been around longer than CAD. Way longer. And my guess, some of you CAD guys would be lost without your programs. Charles [/quote] Charles; I cannot dissagree more with you; I started designing with pencil about 25 years ago; then passing through AutoCAD I ditched into CATIA V5 modelling becoming a diplomate instructor on that. You're right; you don't need a CAD to build a plane BUT a CAD system helps to upgrade seriously your design, helps you to save a lot of time and trouble while building among other advantages. Just to tell; thanks to CAD (and combined withCNC cutting), a modern woody plane is quite lighter than a composite one, just check most of 1/4th scale aerobats and bigger... this was not possible 20 years ago. Another example of my experience; In one already exixting UAV product, I used CATIA CAD system to rededign a certain assembly and helped me to save 20% on weight, 17% on building time; the company is actually selling the same component at the same price but with a 21% greater profit (this is the sad part; I do eran the same; GRGRRRRRR). I one chapter I 100% agree with you: "And my guess, some of you CAD guys would be lost without your programs", It's because they don't matured enough experience neither designing (as I have) nor building (as you have). It's sad, many talented kids dives into modern CAD systems ignoring how to make a projection or a section view. For that reason, I usually start my lessons wth hand draw 2D designing (and students uses to hate me for that.) I hope you take my dissagreement on a constructive way; It's my intention while drawing... to join old school modelling with modern school tendencies. Regards Guille
Posted on: 2/11/2012 12:58 AM by Author "guille2006" in the forum "Scratch Building, Aircraft Design, 3D/CAD"
http://www.rcuniverse.com/forum/fb.asp?m=10953744

RE: CARF F4U-1 Corsair build thread
Gary; the work you're doing is OUTSTANDING!!! I'm following it from the first day and I can say that every day's post is really inspiring!!!! Thaks for sharing!!! Guille
Posted on: 2/9/2012 12:47 AM by Author "guille2006" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10950919

RE: Ability to draw plans?
I'm using CATIA for designing my project... I do even weight and balance issues with that; also CNC and draftings... Soon I'll be uploading a complete thread about that.
Posted on: 2/7/2012 11:47 PM by Author "guille2006" in the forum "Scratch Building, Aircraft Design, 3D/CAD"
http://www.rcuniverse.com/forum/fb.asp?m=10949222

RE: What's wrong with RCU
I'm afraid the problem is in US only... here in Italy RCU wirks fine.
Posted on: 1/31/2012 12:59 AM by Author "guille2006" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10936401

RE: Share your new plane for the 2012 season!
I'm designing this machine... will be an entire thread soon!!!!
Posted on: 1/31/2012 12:09 AM by Author "guille2006" in the forum "ARF or RTF"
http://www.rcuniverse.com/forum/fb.asp?m=10936375

RE: Building a built-up pattern stab and wing
Dave; great thread; thansk for sharing...
Posted on: 12/13/2011 10:41 PM by Author "guille2006" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=10858636

RE: Amazing Rafale Demo
Actually; those airplanes are normally "unstable"; the only thing that keeps them on place is a big computer and constant corrections on canards. The pilots command allow the plane to go in "that" attitude instead of "pulling it"... Also; canards has another mission: to energize air flow over the wing in order to avoid detachment over the wing. This is specially obvious on the Su-30/35/37 family. A curious note: F-16 borned stable with a margin of about 2-3%; modern models are flying -8%. Why to do that?: 1- More maneouvrability and 2-Fuel economy; note that tail stabs becomes lifting surface. Hope it helps [quote]ORIGINAL: HarryC [quote]ORIGINAL: Jack Diaz Interesting the aerodynamics of the canards... most of the time they are ''down''. [/quote] It's quite likely that they are not an elevator control. We assume that foreplanes are simply a tail at the front with conventional elevator control, like the Saab Viggen. Eurofighter Typhoon designers looked at doing that but decided against it, and since Rafale is a contemporary there is a fair chance that Dassault reached a similar conclusion and control logic. The disadvantage to using elevators at the tail is that when you want more up force from the wing, the down force of the elevators works against you. This is made worse for a delta wing where the upgoing elevon alters the camber of the wing so that it produces less lift per unit of alpha just at the time you want more lift. The easy solution says use a foreplane because it has to lift the nose rather than push down the tail, thus adding to the total lift instead of reducing it. But if it does so, it applies a bending to the fuselage which demands more material and hence weight to give enough strength. Eurofighter worked out that the loss of performance due to the extra weight was worse than the loss of performance of using elevons, hence it uses elevons as the primary pitch control. The foreplanes are actively managed by the flight computer to minimise the drag, by trimming the plane and by altering the angle of air arriving at the wing. Thus during the high alpha, slow speed pass at an air display you will often see the Eurofighter foreplane sitting almost horizontal apparently doing nothing to hold the nose up while the rest of the plane is very nose high, whereas on a Saab Viggen the elevator section of the foreplane would be well down in order to hold the nose up. In our Rafale and Eurofighter models we don't have active flight control systems so we program our foreplanes to be simple conventional elevators as per the Viggen. H [/quote]
Posted on: 12/11/2011 11:22 PM by Author "guille2006" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10855286

RE: mmm nice
[quote]ORIGINAL: Doug Cronkhite If you have the technology to interrupt command & control, why would you tell the world you could do it? [/quote] IMO; I think they wanted to send a message... It's the kind of things mafia does, a way of saying: "don't come here, I can screw you". Just my opinion.
Posted on: 12/11/2011 7:28 AM by Author "guille2006" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10854078

RE: mmm nice
[quote]ORIGINAL: erbroens Attenzione Guille, un agente Smith della CIA si leggerà quello che si sta scrivendo, ma per fortuna non capisce italiano .. hahaha [/quote] Cazzo!!!!!! E' vero!!!!!!!!!!!!! un abbraccio Broens!!!!
Posted on: 12/9/2011 7:58 AM by Author "guille2006" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10851492

RE: mmm nice
DO YOU REALLY THINK THE AIRFRAME IS IMPORTANT?????
Posted on: 12/9/2011 7:23 AM by Author "guille2006" in the forum "RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=10851419