RE: Am I the only one who flies pattern with no mixes in their plane ??
Jez' this thread i 3 side now! It's like half of the no mix brigade believe that the computer radio mixes are actually flying freakin' aerobatics! What computer assistance are we talking about here? 2% aileron to rudder? 1% elevator to throttle... it's peanuts! Todays F3A pilots are in a bleedin' class of there own... do you seriously think that CLPR or Myre couldn't fly it out with thumbs? Do you actually they give a s#it? Troll.
Posted on: 9/11/2012 12:10 PM by Author "David Bathe" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11225251

RE: Full scale Albatros test
Gotta agree, even has an original Merc engine. Jez' what a looser.
Posted on: 9/11/2012 12:01 PM by Author "David Bathe" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11225241

RE: DeHavilland Mosquito 81
I think it's great what you're doing with this model but just need to backup something mentioned earlier regarding the refueling valves. I've lost track of all the engines, including my own that we traced erratic performance down to those valves. Nothing but trouble. They're sure neat and dandy... but actually aint worth the bother. Build them out now whilst you have the opportunity because you'll be bypassing them at a later stage. Garanteed.
Posted on: 9/11/2012 11:49 AM by Author "David Bathe" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11225226

RE: need help picking a engine
There was a link in the post. Here it is again: http://www.chiefaircraft.com/radio-control/mufflers/slimline.html OS or Saito engines are listed. See all and choose the one's marked smoke. Couldn't be simpler than that.... unlike the cleaning.
Posted on: 9/10/2012 10:30 AM by Author "David Bathe" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11223855

RE: need help picking a engine
It's not the engine, it's the muffler. You need to find a decent smoke muffler (slimline or similar) then match what's available to what ever engine it fits. Something like this: http://www.chiefaircraft.com/sli-4001s.html The secret of good smoke is heat... heat in the muffler. 2 stroke gass engines are the best IMO Four stroke glow engines don't generate the same heat so you'll need some type of pre heater coil. As mentioned, some smoke mufflers have this built in but from my experience, there never enough heat! So you'll possibly end up running a coiled copper pipe around the cylinder head, to pre heat the smoke oil, before it's heated further by the coil inside the muffler... before being injected. That could sound like a lot of heating... but heating is good. Mucho experimenting, I did... then came to the conclusion that wiping all the smoke s#it of the plane afterwards was a good enough reason not to smoke! Enjoy.
Posted on: 9/10/2012 9:51 AM by Author "David Bathe" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11223800

RE: Am I the only one who flies pattern with no mixes in their plane ??
I learned to fly in the early 70's also. Spent a great deal of time cutting wings, adding more or less dihedral, moving stabs and engine thrust lines up and down. Jez' it's a great deal easier now with comp' mixes. I'd guess. this is a Troll.
Posted on: 9/9/2012 7:24 AM by Author "David Bathe" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11222662

RE: What's the story with JR 2.4ghz?
Unless they bin that Darth Vader inspired designer, my 10X will be my last JR regardless of technology.
Posted on: 9/8/2012 7:51 AM by Author "David Bathe" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11221708

RE: What's a good plane for this engine?
That is a FANTASTIC engine, the vids of it running...wow! If anything can rescue large non-rotary scalies from the clutches of ePower and sound generations, it's this engine alone. I prefer to listen to digital cylinder than a screamin' monster two stroke. That would change, I'm sure, with this under the bonnet and a massive prop bolted to the front and padlling the air. One day gentlemen.
Posted on: 9/6/2012 5:59 AM by Author "David Bathe" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11219332

RE: Best scale photo!
[quote]ORIGINAL: David Bathe P.47 shot from back trailing smoke. Doesn't get much better. [/quote] No sooner do you say it... somebody proves you wrong! strega/7s 3rd picture of a P47, close up underside... Mind bending! Somebody retouch an element of pilot in there... and it's a done deal.
Posted on: 9/4/2012 5:26 AM by Author "David Bathe" in the forum "RC Scale Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11216729

RE: Best scale photo!
P.47 shot from back trailing smoke. Doesn't get much better.
Posted on: 9/3/2012 8:34 AM by Author "David Bathe" in the forum "RC Scale Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11215644

RE: Vailly Aviation Hawker Hurricane Build Thread
Regarding your flap questions. I believe the problem's created by the low wing loading of our models compared to the full size. Adding a small amount of flap on many models just increases the lift on a wing that already has plenty. Adding full flap creates a spoiler effect. I had a model that just didn't want to come down, adding flap made it impossible to land... only when I dialed the flap down to 85 deg did it land. It was the spoiler effect that aided the light model. Then again I flew a similar aircraft that was much heavier. That responded far better with partial flaps. It's a wing loading thing IMO. Great thread BTW.
Posted on: 8/28/2012 7:55 AM by Author "David Bathe" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11208941

RE: Old OS 120FS-P Surpass II
I have that engine, it certainly has it's quirks..all of them associated to the pump/regulator and carb. Valves, rings ,bearings etc are as any engine, it's the above mentioned that can cause head aches. First off, the pump. It's pumps like a steam engine! Far to much fuel than required thus it has the return to tank nipple which in effect creates a constant circular flow of fuel between tank and pump. From the pump assemble there the carb feed via the regulator... and as with YS regulators... once you open it one should replace the diaphram. Easily done one a YS... far more difficult on the old SII. You'll even have problems sourcing a replacement. Thus the advice... Don't open it.! That doesn't mean that the reassembled reg' won't work, it just means that in might not seat properly thus creating less than optimal performance. And optimal performance with a SII always left something to be desired. They run rich when they load up... in a vertical for example. Hopeless for an aerobatic model... but perfectly acceptable for anything else. Strange thing is... as much as it load up, as rich and wet it becomes... it still manages to keep running.... way past the point that'd cause other engine to go dead stick. Change the bearings and rings, adjust the valves and reassemble the pump them give it ago. As quirky as it is... i love mine! F plug and 15%.
Posted on: 8/24/2012 9:40 AM by Author "David Bathe" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11204521

RE: OS 120 Surpass pumped rich at idle
I have a lot of experience with the old pumped 1.20 surpass II, don't know if this is the one you have... mine has the pump on the back plate (with a screw in the middle that ISN'T the regulator) and the actual regulator (a square box) on the carb/close by the needle. Running rich is a quirk with OS pumped engines BTW. PM me if you're still lookin' for answers.
Posted on: 8/24/2012 6:02 AM by Author "David Bathe" in the forum "Sport Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11204328

RE: Let's show our Scale Planes off
I also like the video. Great to watch the flyings actually working... you can see the wing flexing, wires tightening and lossening. Or maybe it's an illusion?
Posted on: 8/24/2012 1:34 AM by Author "David Bathe" in the forum "RC Scale Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11204212

RE: Engine test reports
A lot of hard work! Well done.
Posted on: 8/23/2012 11:08 AM by Author "David Bathe" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11203559

RE: good,bad,or ugly
Its just a Marvelous aeroplane... and not just as a low wing trainer as you'll find out. If you want to do some small custom tweeks: • drop the engine thrust line about an inch lower • make the rudder 50-75% larger (you decide, just make it bigger) and use pull-pull • don't use a single push rod driving one side of the elevator, instead use a Y elevator push-rod and drive both from the servo. • If you want (I did) make it as a tail dragger. If the supplied ply pieces for the fire wall look/feel a bit soft (various qualities IMO) and make a new one out of real 1/4" marine ply instead of the supplied. Same applies for the UC mount if you decide to go the tail dragger route. Just remember, this one you want to build with dihedral... not because of stability, because of roll coupling. You'll need a good .61-91 and if you build and set it up straight, then work in a couple of small mixes... your son will have a problem getting his hands on it. Daddy's just found his favourate plane- It's that good.
Posted on: 8/14/2012 1:28 AM by Author "David Bathe" in the forum "Questions and Answers"
http://www.rcuniverse.com/forum/fb.asp?m=11192672

RE: J-3 Cub
That's the one I have, built with clipped wings. Used an OS.46fx, to much IMO, dropped to the .46LA, better. Then changed to an Enya .41 four stroke... Great. As with all Cubs, the more power you add, the worse it gets. So why bother.
Posted on: 8/10/2012 11:50 PM by Author "David Bathe" in the forum "Questions and Answers"
http://www.rcuniverse.com/forum/fb.asp?m=11189023

RE: chipmuck
There is quite a lot of miss guilded info flyin' around here. This isn't about Pfactor. It exists but has absolutely no effect on our small models. This isnt about Torque. Torque is a twisting, not a yawing effect and has very little (read non) effect on any, even high powered models. This is about the spirelling propeller slip stream hitting the left side of the vertical fin causing it to move over, thus creating the left yaw. It can't be fixed (unless you use a counter rotating prop/ ducted fan etc), but it can be compensated for. There are two methods. 1. As mentioned: RIGHT THRUST. The wonderful thing about right thrust is that it's proportional... set it for high power... and it's good for middle and low power settings. 2. Right rudder to throttle mix. Once airborn, find out how much right rudder you need to imput to hold the model in a straight vertical climb using full power, then mix that amount to full throttle, half that amount to mid throttle ect. From my experience, even though it's a real easy fix, far simpler than moving an engine around, it isn't as proportional as physical right thrust and will need a mixture curve to get a good feeling across the throttle range. That's it and thats that. There is one other factor that you should be aware of ... your Chipmunk has it's UC very close to the CG which make it very sensitive to ANY yaw effect on the ground... whether because of to little (or to much) right thrust, over compensated rudder inputs, offset or dragging wheels, a small dump on the runway etc. The only way to correctly set the right thrust is once airborn. BTW, somebody mentioned that pattern pilots fly with there thumbs. Not the ones I hung around with! They are adding washers, tweeking thrust angles, adding little bits of lead to wing tips etc so the DONT have to fly with thumbs.
Posted on: 7/31/2012 12:11 PM by Author "David Bathe" in the forum "Questions and Answers"
http://www.rcuniverse.com/forum/fb.asp?m=11176128

RE: Beautiful low wing trainer plans.
Grab some Carl Goldberg Tiger 2 plans from somebody in the States... there must be millions. A Dave Patrick design super classic. Absolutely BRILLIANT mate, the cream of the crop.
Posted on: 7/31/2012 11:20 AM by Author "David Bathe" in the forum "Scratch Building, Aircraft Design, 3D/CAD"
http://www.rcuniverse.com/forum/fb.asp?m=11176061

RE: Pattern Transmitter setup
Here's an old film of Chad Northeast flickin' switches: http://www.youtube.com/watch?v=QXGNk-gJl5g Some elegant pinky dancing.... makes you want to reach for one of those Euro Trannies... with the switches attached to the top of the sticks!
Posted on: 7/27/2012 9:04 AM by Author "David Bathe" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11171268

RE: Not finished but I could not wait
Man, she's so much better than lookin' at pattern planes.
Posted on: 7/13/2012 8:58 AM by Author "David Bathe" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11153771

RE: Vailly Typhoon Build
[quote]ORIGINAL: Sheriff of Nottingham Thanks for your trouble David. I am now convinced to "solid mount". Never really liked the idea of soft mounts to be honest, maybe being over conscincentious eh. regards, Frank [/quote] It's smart to hard mount on a scale model, even though I use hyde soft mounts on my F3A models! They're fagile conpared to a big scalie... and I agree
Posted on: 7/12/2012 3:07 AM by Author "David Bathe" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11152272

RE: Predator b Uav design
Would make a great project. The original thread starter suggested 1/8th scale. Much to small IMO. 1/5th scale at least... Remember it's all wing. Regarding wing construction, sniff around the glider forum. They're making models with far larger spans than that. 1/3rd scale is quite normal here in Europe. Multi section wings, no problems.
Posted on: 7/10/2012 9:23 AM by Author "David Bathe" in the forum "Scratch Building, Aircraft Design, 3D/CAD"
http://www.rcuniverse.com/forum/fb.asp?m=11150015

RE: Vailly Typhoon Build
This is the type of thing. He'll (Merle Hyde) will have one specially for your choosen engine. If soft mounting, this is the only way to go mate. BUT.. and it's a biggy... you'll have engine movement around the rotational axis which'll mean you'll have to have plenty of space inside the cowl ( or extra cut outs) and... unless you have your header/muffler system soft mounted so it'll follow the engine, you'll be hit with constant header breakage. And don't believe flexi headers will solve your problem, they'll break eventually. Hard mounting sounds better eh.
Posted on: 7/9/2012 11:25 AM by Author "David Bathe" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11148895

RE: Vailly Typhoon Build
[quote]ORIGINAL: Sheriff of Nottingham Quadra 100m and not sure if she requires "soft mounting". [/quote] Certainly not in that manner using Lord type mounts. It'll be hopping all over the place. Thrust angle changes, total catastrof Sheriff. The F3A boys have had many years of experience soft mounting due to noise reg's, airframe fragility etc. Decades of experiments have show that the mount must function in the rotational axis and not, up and down, side to side. If you must soft mount, a Hyde type mount are they way to go, period. He also makes versions that don't need a nose ring to stabilize the prop shaft. Having said all of that, I'd mount it solid.
Posted on: 7/8/2012 10:10 AM by Author "David Bathe" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11147537

RE: F6A
[/quote] Call me crazy, but it looks for all the world like IMAC Freestyle.[:)] [/quote] Not from what I've seen. This looks like there's some planning, controll. Some type of routine, a method. IMAC free style...wouldn't call it aerobatics, more simply momentary random-deviasions from level flight... Plus: FANFAIR OF TRUMPETS... the hover- with smoke! And... (how could one forget): AS MUCH NOISE AS POSSIBLE! No, this was possitively heavenly in comparision.
Posted on: 7/2/2012 12:04 PM by Author "David Bathe" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11140068

RE: F3A World Cup in Cerceda- España
Any vids of the top players flights?
Posted on: 6/28/2012 9:30 AM by Author "David Bathe" in the forum "RC Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=11135131

RE: How do you assemble a hand fuel pump?
Had several of those pumps, same design, different brands The screws are for attaching the pump to the box I believe... never bothered, always hand held. Nope, the pump is two way so it doesn't matter which nipple acts as in or out. I prefer clockwise in, anti c' out ...you just have to experiment. You will of course need to add extra fuel tubing. What they supply is only enough to go between the lid and the can bottom.
Posted on: 6/25/2012 11:15 AM by Author "David Bathe" in the forum "Questions and Answers"
http://www.rcuniverse.com/forum/fb.asp?m=11131259

RE: top flite taurus canopy
Search for somebody here called Taurusflyer... from the Netherlands if I remember... Taurus mad... as you'll discover. Normally hangs out in the classic pattern section. He'll know for sure.
Posted on: 6/20/2012 12:43 PM by Author "David Bathe" in the forum "Questions and Answers"
http://www.rcuniverse.com/forum/fb.asp?m=11125522

RE: Dummy radial detailing...
Dude, they where nice!
Posted on: 6/18/2012 6:17 AM by Author "David Bathe" in the forum "RC Scale Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11122203