RE: Honda GX25 flies...on Big Bee
[quote]ORIGINAL: Bladejunkie I'm building a BUSA 1/4 scale Fokker D-VII,and I want to put the Honda on it.Any thoughts? Thanks Jim [/quote]what is the wingspan, (or more importantly wing area) and weight of the fokker? the short nose should be good for the heavy engine, I'm guessing it'll have plenty of wing, kinda like a sopwith pup? to carry the weight.
Posted on: 8/25/2008 7:03 AM by Author "BBriBro" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=7882912

RE: Honda GX25 flies...on Big Bee
[quote]ORIGINAL: Bladejunkie Hey BBriBro,have you got any info and/or pictures on a GX-35 conversion?I'm building a BUSA 1/4 scale Fokker D-VII,and I want to put the Honda on it.Any thoughts? Thanks Jim [/quote] A good friend of mine put a GX-35 on a giant telemaster, I don't know how much more it weighs than the 25, but it's got quite a bit more power, and with a wing that big
Posted on: 8/24/2008 9:30 PM by Author "BBriBro" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=7881737

RE: Honda GX25 flies...on Big Bee
[quote]ORIGINAL: twpetry I would like to see pics of the Honda plane , I only have the red X on the computer. Thanks , Tom BTW , I work at Honda. [/quote] This thread is over 4 years old !! I had no idea it would keep coming back, or I would have left the pics, but the "engine conversion" crowd is so small I figured everyone had seen it. I removed the pics to free up some space, I'd be glad to email them to you, I have quite a few of the plane and the little honda torn down. It's still running strong....well maybe I should say running fine, it's never been very strong [;)]
Posted on: 8/24/2008 5:59 PM by Author "BBriBro" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=7880938

RE: saitos FA 180 and FA 220 ????
[quote]ORIGINAL: hobbsy Here are the parts that came for the carb enhancement for the Saito 2.20, sans instructions[/quote] Wow, thanks Hobbsy, that's very interesting. First of all, it's not really a "pump" per se, it is just pressurizing the tank, take a look here [link=http://saito-engines.info/pumps.html]http://saito-engines.info/pumps.html[/link] it looks identical to this "saito pump system" with an appropriate carb for the 220. That pump ...er needle valve obviously doesn't cost much, so I'm wondering about the value now, since it's over $100, essentially just for the carb. BTW, where did you get it ? I've been trying to research this since I bought my engine, and haven't found any info on it. Horizon has a listing, but no specs, and not in stock. Have you measured the carb? To see how much bigger it is ?
Posted on: 12/29/2005 3:32 PM by Author "BBriBro" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=3705642

RE: Saito 220 installed in Giant U-Can-Do 3d
[quote]ORIGINAL: BBriBro Maybe someone has both, and can post a nice rear shot, that shows the carbs. The 220 definately has a longer intake manifold, but it's also a taller engine, so it might be a wash once it's inverted, it's hard to say without seeing them both. [/quote] Thanks to Hobbsy, we have a pic to help show my point. If you look at his pic, the carbs appear
Posted on: 12/28/2005 9:19 PM by Author "BBriBro" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=3702606

RE: saitos FA 180 and FA 220 ????
[quote]ORIGINAL: hobbsy Per our PMs, [/quote]Thanks, I'm going to post your pic over in my thread, I think it will help prove my point.
Posted on: 12/28/2005 9:13 PM by Author "BBriBro" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=3702584

RE: Saito 220 installed in Giant U-Can-Do 3d
[quote]ORIGINAL: osxpro I have the GUCD with a Saito 180 on it (inverted). I have pretty much solved the issue of flooding and dead sticks. I added a heli saddle tank (located port side right next to the cowel- mounted externally). [/quote]Do you have any pics of this apparatus ? I understand the logic that it stays full and prevents air from getting to the carb, but it doesn't solve the issue of the tank being at the wrong height. In fact, now that I think about it, those of you having trouble with flooding must really have your tank too high, I don't have that problem, so maybe my tank is close to correct ? Certainly our tanks must all be very close to the same height, being in the same model, I wonder if the carb is in a different location on the 180 ? Effectively making the carb lower when the engine is inverted? Edit: Maybe someone has both, and can post a nice rear shot, that shows the carbs. The 220 definately has a longer intake manifold, but it's also a taller engine, so it might be a wash once it's inverted, it's hard to say without seeing them both.
Posted on: 12/28/2005 3:44 PM by Author "BBriBro" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=3701233

RE: Saito 220 installed in Giant U-Can-Do 3d
[quote]ORIGINAL: Maudib I had the UCanDo60 with a Saito 100 on it... [/quote]Do you remember it taking a long time to be ultra reliable, and idle slowly ? I had a Saito 72 when they first came out, It really gave me fits for a while, and I was a bit upset that I had replaced the swiss watch of a 61 Fx. But after a while it idled much better and I didn't have any trouble with it from then on. I'll give this one some time, but the tank being a bit too high, and the engine inverted does make me wonder.
Posted on: 12/28/2005 11:34 AM by Author "BBriBro" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=3700422

RE: saitos FA 180 and FA 220 ????
[link=http://saito-engines.info/specifications.html]http://saito-engines.info/specifications.html[/link]
Posted on: 12/28/2005 11:27 AM by Author "BBriBro" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=3700394

RE: Saito 220 installed in Giant U-Can-Do 3d
[quote]ORIGINAL: BBriBro I'll try to have some better, more realistic numbers later. [/quote] More testing today, I have close to 2 hrs run time on it now, with about 45 minutes of it installed on the plane, inverted. The Zinger 20x6 turned 8100, the Pro Zinger 20x8 turned 7800, and a Dynathrust (don't laugh, it was just laying around :) ) 18x6 turned 9050. I think these numbers
Posted on: 12/28/2005 11:06 AM by Author "BBriBro" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=3700288

RE: Saito 220 installed in Giant U-Can-Do 3d
[quote]ORIGINAL: rfan_1 I received a suggestion on the Club Saito thread that involves going back to the crankcase vent nipple, but this time putting a remote needle valve inline to bleed off the excess pressure. [/quote] Check this out, [link=http://saito-engines.info/pumps.html]http://saito-engines.info/pumps.html[/link] and scroll down to the "saito pump system" it sounds like what you are talking about, using the crankcase pressure to pressurize the tank, but being able to adjust it, and also allow the crankcase to vent to atmosphere.
Posted on: 12/28/2005 8:57 AM by Author "BBriBro" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=3699828

RE: Saito 220 installed in Giant U-Can-Do 3d
[quote]ORIGINAL: bodyworks What kind of R's were you getting with that 20X6 prop on the bench? [/quote] I saw 8100, but it was at night, using a flashlight through the prop, and it was a Zinger. I'll try to have some better, more realistic numbers later.
Posted on: 12/27/2005 5:59 PM by Author "BBriBro" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=3697691

RE: Saito 220 installed in Giant U-Can-Do 3d
[quote]ORIGINAL: adrenalnjunky I'm partial to the slimline F1 fueler models. http://www2.towerhobbies.com/cgi-bin/wti0001p?&W=000537310&I=LXFBA8&P=K [/quote] That's essentially a fuel dot, except you need their machined nozzle, rather than pulling a piece of tubing through a sleeve. That looks like another simple, effective method. I'm glad I decided against a fuel valve, I see I'm not the only one that does not care for them, although I was hopeful some of the more modern designs would be better.
Posted on: 12/27/2005 5:39 PM by Author "BBriBro" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=3697621

RE: Saito 220 installed in Giant U-Can-Do 3d
I've replumbed everything, I'm running a 3rd line for fueling, (no 2nd clunk) The tubing barely sticks through the stopper, so hopefully I can de-fuel most of it just by tipping it on it's nose. I moved the tank forward to within 1/2" of the firewall. I drilled the clunk to 1/8", I installed 5/32" fuel line on the clunk, through a larger tube in the stopper all the way to the carb, the supply line is now only about 3" long. I mentioned the fuel inlet nipple being small, a "standard" size if there is such a thing, and this 5/32" fuel line isn't tight at all, it just slips right over the nipple, so I'm wondering if all this was necessary.
Posted on: 12/27/2005 5:11 PM by Author "BBriBro" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=3697522

RE: Saito 220 installed in Giant U-Can-Do 3d
I just came across this link [link=http://saito-engines.info/fuel_tank.html]http://saito-engines.info/fuel_tank.html[/link] some pretty good info there.
Posted on: 12/27/2005 9:28 AM by Author "BBriBro" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=3696112

RE: Saito 220 installed in Giant U-Can-Do 3d
[quote]ORIGINAL: DiscoWings I have had nothing but trouble with these stupid fueler valves, they alwasy clog up and cause problems[:'(] Highly reccomend you go with a dual clunk setup and get yourself a fuel dot from: http://www.pspmfg.com/FuelDotsRegular.html I bought 20 of these at 1 time and they are awesome. The only thing that wears down on them is the o-ring which you can buy a pack of 10 for 1.00 dollar. SO much better than fueler valves and you will eliminate the big problem of the fueler not clogging up the fuel supply to your engine. [/quote] I'm somewhat skeptical of a fueler too, but it's been many many years since I've used one, the slimline excel fueler looks pretty good, and from what I can tell, there is no "valve" , after you fuel, you just plug it from the outside (looks like a fuel dot) and then the fuel has no place to go but the carb, looks like it would support a high volume. The problem with a T fitting and a traditional dot, is I would flood it if I didn't crimp or disconnect the fuel line from the carb. (too narrow to get in there, and the carb is in the rear, somewhat hidden) I don't really like dual clunks, I could do just a 3rd line for fueling, with a fitting in the top of the tank, without a clunk on it, but then I couldn't de-fuel :( I'm using a Tettra tank, I've never used one for anything but YS's, which aren't too particular since they pressurize the tank, maybe it has a smaller than average clunk in it, I'll have to check it. The saito has a standard size nipple on the carb, which makes me believe it shouldn't require anything special of the fuel system. If I remember right, the Moki 2.10 had a much larger nipple on the carb, which could be one clue that it will require larger fuel line and a less restrictive tank/clunk setup.
Posted on: 12/27/2005 8:48 AM by Author "BBriBro" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=3696038

RE: Saito 220 installed in Giant U-Can-Do 3d
[quote]ORIGINAL: Maudib You running 20% or 30% fuel? I've always found them to run better with hotter juice. Maybe larger brass tube & fuel tubing for more flow? [/quote] I'm using powermaster 20/20. I ran it again with the fuel line directly from the tank to the carb, and it ran MUCH MUCH better. It looks like I just had too much length. I guess I'm going to have to use some sort of fuel valve, I usually don't like those, but I can't use a T-fitting or I'll flood it for sure, unless I pinch off the line to the carb, which is hard to do with such a narrow cowl. I'm thinking maybe the Robart 204 super fueler or the sullivan fuel filler valve, I've never used either, but they seem simple, and shut off the flow to the carb during fueling. Any experience with either of those?
Posted on: 12/26/2005 4:20 PM by Author "BBriBro" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=3693746

RE: Saito 220 installed in Giant U-Can-Do 3d
Okay, I just ran mine for the first time installed in the airplane. Forget everything I said in the above posts, mine ran like crap, I had all sorts of troubles, it's like a different engine compared to the other day on the test stand. Of course it's freezing cold out, drizzling, my glo drivers were dead, my starter battery died, my throttle servo seems to be erratic, and I got grass stains on my jeans, but I was determined to see what it would do after reading about the troubles [b]rfan_1[/b] had. Mine won't flood itself just sitting, (which is nice to see) and it runs very rich at idle, but here is the puzzler, I can't get it rich enough at WOT. In my case, I'm thinking my plumbing is too long from the tank to the carb, either that or my filter is too much restriction. Saito recommends the tank be 5 mm [b]below[/b] the carb. Mine is about 1 1/4" above the spray bar, while I can see this causing some tuning difficulties, it surely should richen up with ease. I was hoping that my tank being mounted higher would compensate for having it mounted further away and a longer run. I even changed from a 20x6 to a 18x6 prop, thinking it was just too much load for a new engine, but even with the smaller prop I couldn't get it to richen up sufficiently. Once it would transition and clear out the excess from the rich idle, it would sag, I never left it WOT for long, because it certainly wasn't right, I think this is exactly what rfan_1 was saying. I know Saitos take a while to break in, so I'm not too critical of the idle or the transition for a while, but it outta richen up with the needle 6 turns open. Saito mentions a level for the tank, but they don't say how close it should be to the engine, or what size fuel line to run, these are all variables that play into it. I'll reroute my fuel lines, shorten them up, bypass the filter, charge all my batteries and try again.
Posted on: 12/26/2005 12:52 PM by Author "BBriBro" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=3693149

RE: Saito 220 installed in Giant U-Can-Do 3d
[quote]ORIGINAL: Maudib BBriBro's setup allow him to avoid that problem. By clamping the line to the carb, he keeps it dry while he fuels. [/quote] No clamping necessary ! I will just disconnect it, that's why I have it "separate" there with the filter rather than running a T and a fuel dot, so while I'm fueling , the line to the carb won't be connected to anything.
Posted on: 12/26/2005 10:36 AM by Author "BBriBro" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=3692780

RE: Saito 220 installed in Giant U-Can-Do 3d
Ok, when I first read your post about siphoning, I was thinking you meant it wouldn't draw fuel, as in long distances, like with the tank back on the CG. sorta like the Mokis were known for, well and the 160 FX with a pitts muffler. Anyway, I can understand it flooding out, and running rich if the tank it above the carb, what I don't understand though, is why you can't richen it at WOT ? I would think you would be getting too much fuel all the time, since you have the help of gravity and the pressure from the muffler. I've never seen a needle valve that couldn't lean it enough, since they will close completely if screwed all the way in. Now it sounds like you are unscrewing the needle valve to the point it's about to fall out, but yet the engine will not richen up, correct ? I have had that happen with a tank that is too low, or no pressure line to the tank, but with your installation, I wouldn't expect that. I ran mine on a test stand, but not in the airplane yet, now you've got me curious what mine will do. I'm assuming you have tried leaning the low end mixture to compensate for the extra fuel pressure? I don't think I'd mess with a pump or a regulator until you've tried all you can with the tuning of the needles. I like to keep things simple. In fact, I'd probably lower the tank, before I installed a pump or regulator, That adds expense, weight and complexity, with more room for error in tuning and setup.
Posted on: 12/26/2005 10:22 AM by Author "BBriBro" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=3692753

RE: Saito 220 installed in Giant U-Can-Do 3d
[quote]ORIGINAL: rfan_1 Hello, You have a very nice installation here. I have two questions. What is the purpose of the orange fuel line coming out of the side, coupled to the green fuel line going back in? Also, how did you overcome the fuel siphoning problem? TIA RFan [/quote] Thanks for the compliments guys. Maudib was correct ! That is the line to the carb, routed outside just so I can fuel it without using a T fitting (and pinching the line to the carb), or a 3rd line, or any other need to get in the cowl unnecessarily. Also, if it tends to flood itself, I can just disconnect it there which is slightly above the carb. This was common practice with YS's before fuel dots were so popular, that way you could relieve the built up pressure after a run, and also open up the sealed system for fueling. The only reason they are two different color lines is becuase that's all I had :) and it was Christmas with no stores open, I just wanted to get it done and post some pics. I'm not aware of a fuel siphoning problem. I had heard the 180 doesn't like to draw fuel, but I figure with the inverted installation, the carb is slightly lower than it should be in relation to the tank, if anything that will help it draw fuel. I also resisted the urge to enlarge the outlet in the muffler, I was surprised it had no baffle, but the outlet holes looked somewhat restrictive. Then a friend convinced me the added pressure to the tank might be helpful.
Posted on: 12/26/2005 9:14 AM by Author "BBriBro" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=3692598

RE: Giant U-Can-Do 3D 1.20-1.60 ARF!!!!!
I just swapped out my ZDZ 40 for a Saito 220. I started a new thread with pics to show that it will fit by modifying the mount (not the firewall) if anyone is interested. [link=http://www.rcuniverse.com/forum/m_3690379/anchors_3690379/mpage_1/key_/anchor/tm.htm#3690379]Saito 220 installed in Giant U-Can-Do[/link]
Posted on: 12/25/2005 1:49 PM by Author "BBriBro" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=3690400

RE: Giant U can Do: Motor choices?
[quote]ORIGINAL: rtn9105 As it turns out, the Saito 2.20 isn't going to work in this plane. When the carb is all the way back against the mount, the spinner back plate ends up being almost 3/4" to far forward so there would be that much space between the cowl and the spinner. The exaust also doesn't fit without cutting into the fuse so I guess the Saito 1.80 is the engine for this plane. [/quote]I just installed a Saito 220, didn't have to move the firewall back or cut into it for the exhaust, I started a new thread with pics to show that it will fit by modifying the mount (not the firewall) [link=http://www.rcuniverse.com/forum/m_3690379/anchors_3690379/mpage_1/key_/anchor/tm.htm#3690379]Saito 220 installed in Giant U-Can-Do[/link]
Posted on: 12/25/2005 1:46 PM by Author "BBriBro" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=3690391

RE: Best Engine For Giant U-CAN-DO?
[quote]ORIGINAL: prophanger1 Yeah its pretty much made for the ZDZ 40 RE, or it fits like it. The Saito 220 won't work with the cowl, unless you cut the firewall off and move it back a little over an inch. [/quote]I had the ZDZ 40 RE, and now I have swapped to the Saito 220, I started a new thread with pics to show that it will fit by modifying the mount (not the firewall) [link=http://www.rcuniverse.com/forum/m_3690379/anchors_3690379/mpage_1/key_/anchor/tm.htm#3690379]Saito 220 installed in Giant U-Can-Do[/link]
Posted on: 12/25/2005 1:41 PM by Author "BBriBro" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=3690385

Saito 220 installed in Giant U-Can-Do 3d
I just finished installing the Saito 220, since I read many times that it wouldn't fit I decided to post some pics, then again when the Giant U Can Do first came out, I read the ZDZ 40 wouldn't fit either, and that's what I was flying in it until I swapped it out for the Saito. I used the stock mount and cut it away as necessary only on the bottom side, the top was left intact so it still "keys" together and the mounting bolts go through both pieces. [image]http://home.insightbb.com/~ebaypics/saito1.JPG[/image] [image]http://home.insightbb.com/~ebaypics/saito2.JPG[/image][hr] You can see the plug I installed in the firewall to fill the big hole from the ZDZ carb. When installing the ZDZ, I also cut out two of the factory motor mount holes, which I also had to fill and re-drill. With so many holes in the firewall, I installed a 3/16" doubler behind it, about 4"x4" [image]http://home.insightbb.com/~ebaypics/saito3.JPG[/image][hr] The bulge you see where the cowl mounts is 1/32" ply. My cowl was pulling into the soft balsa fuselage sides, so I peeled the covering back and installed a strip of plywood. There were some pretty good indentations there, and an imprint of the fiberglass weave from inside the cowl. [image]http://home.insightbb.com/~ebaypics/saito4.JPG[/image][hr] The black lines on the firewall are burn marks from the grooves molded in the Bennett muffler that was on the ZDZ. There actually was a very very tiny gap behind it, but after several routine tightenings of the motor mounting bolts, my standoffs pulled into the firewall enough to cause the muffler to touch. [image]http://home.insightbb.com/~ebaypics/saito5.JPG[/image] [image]http://home.insightbb.com/~ebaypics/saito6.JPG[/image][hr] That large hole was for the spark plug cap to pass through for the ZDZ ignition, another plug, and more epoxy to fuel proof everything. The small tube behind the muffler is the crankcase vent. [image]http://home.insightbb.com/~ebaypics/saito7.JPG[/image][hr] The spinner gap is ok, I could have actually moved the engine back a bit further, but I wanted to leave a little bit of the mount intact, so the bar that connects the two halves wouldn't be totally cut out. Also, I didn't want to go too short and have to add washers (which pull into the firewall) these mounts have so much surface area, I wanted to take advantage of that. [image]http://home.insightbb.com/~ebaypics/saito9.JPG[/image] [image]http://home.insightbb.com/~ebaypics/saito8.JPG[/image][hr] The final finished weight is 12lb 3oz. With the ZDZ it weighed 13lb 1oz. I think it could easily be 12lbs even if I hadn't "re" engined it. I added some weight with my firewall doubler, the various plugs, and plenty of epoxy to seal it all up. I also have two plywood battery trays that have been abandoned, one was used for the ignition battery, the other is at the rear of the canopy, ( I had to move the battery up front with the lighter engine)
Posted on: 12/25/2005 1:38 PM by Author "BBriBro" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=3690379

RE: Extreme Flight YAK 54
[quote]ORIGINAL: Ian.W urm....87" yak is in the giant section, about 300 pages long[sm=thumbup.gif] [/quote] Well now I'm really confused, I didn't think I was subscribed to this one, Hmmm. I saw it too was very long, and just assumed it was the same thread.
Posted on: 12/2/2005 6:05 PM by Author "BBriBro" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=3611424

RE: Extreme Flight YAK 54
[quote]ORIGINAL: zorka Hi Guys, P.S. Anybody thought of using a Saito 125 with this bird yet? Has similar power rating than the YS and it looks a lot lighter! Also dont need 30% fuel either. [/quote] This thread used to be about the 87" Yak, but I see the title has been changed, so what happened? I was going to suggest troy built models for the wing tube, but since you mentioned the Saito, you must be talking about the smaller Yak.
Posted on: 12/2/2005 4:59 PM by Author "BBriBro" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=3611173

RE: Giant U can Do: Motor choices?
[quote]ORIGINAL: Super D My buddy used a Bennett muffler. I believe Bribro used it on the RE. [/quote] Yes, it's a Bennett, it doesn't do much "muffling" LOL, but it's small, light, cheap and fits well.
Posted on: 11/29/2005 10:48 PM by Author "BBriBro" in the forum "3D Flying!"
http://www.rcuniverse.com/forum/fb.asp?m=3601560

RE: Extreme Flight 87" Yak 54 - Build & Fly
[quote]ORIGINAL: Josey Wales BB..Yea I goofed and ordered 1.5" arms instead of 1.25" arms for the ailerons..[/quote]I realize that, I remember you saying you ordered the wrong arms, but since you didn't go too short, you can still use them at 1.25" what made you try 1" ?
Posted on: 10/16/2005 5:01 PM by Author "BBriBro" in the forum "Giant Scale Aircraft - 3D & Aerobatic"
http://www.rcuniverse.com/forum/fb.asp?m=3460848

RE: Extreme Flight 87" Yak 54 - Build & Fly
[quote]ORIGINAL: jrjohn Now I don't want to hurt any feelings here but....... I was doing a little research tonight. Found out the Yak 54 is only an "aerobatic trainer" The Yak 55 on the other hand is the only plane the Russians use for all out competition. john [/quote]Now I don't profess to be an expert on full scale Yaks, But I'd be willing to bet the 54 is a trainer because it has 2 seats, not necessarily because it's more docile. I wouldn't say it's "only" a trainer. Even the fact that the canopy is different (and maybe even some other aspects of it) don't mean much to a model anyway, Most model designers change stuff anyway to make the model behave the way they want, even though it still resembles the full scale design. A perfect example would be a J-3 CUB. if you've ever flown a real one with 2 people (65Hp, not 85) it is an absolute pig, But how many models have you seen flying inverted, doing flat spins, climbing vertically to a stall turn. To the laymen, just visiting a flying field for the first time, they would have no idea that a CUB is an underpowered slow stable trainer. In other words, even if you are correct in the fact that the 54 is "only" a trainer in full scale, the model as most of us know, is more capable than most anything else we've ever flown, regardless of how many seats it has or it's full scale heritage. Many people much prefer the two place Edge for looks alone, with the larger canopy, so that's what model designers build, even though it may fly better than the all out competition single seat version.
Posted on: 10/16/2005 4:58 PM by Author "BBriBro" in the forum "Giant Scale Aircraft - 3D & Aerobatic"
http://www.rcuniverse.com/forum/fb.asp?m=3460839