RE: New DLE 35
When folks do prop tests I'd be interested to know how it manages with a big low pitch prop - will it handle a 20x8, 20x6 or even bigger? For WWI 1/4 scale....
Posted on: 7/11/2012 6:13 AM by Author "jharkin" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11151187

RE: Are all RC forum's activity in decline?
Interesting comments... Ive spent so little time on RCU in recent years I was not aware of the technical issues wit the forum - but most of the other issues ring true for me. - Far too many discussions devolve into brand wars or advice from folks who obviously don't have first hand experience.. Or worse, gets sidelined into political rants - The hobby in general is losing popularity. Building is going away due to the aging builder community, arfs, and just too many other distractions for kids and folks with young families to start - The easy of ARFs, while good for lowering the barrier to entry and getting more people into the hobby, also makes it a transient activity for many and turnover is high. - The economy compounds the above and it turns into a viscous circle of no money to spend -> no RC sales-> fewer RC suppliers -> less options->less interest to join the hobby - Pressure on our flying sites I have seen my own club reduced from 180 members to less than 100 in a decade, and the crowd at our multiple fields that would have been 30+ on a Saturday is now very small. Maybe 1 in 5 of our local hobby shops are still around. When I started I used to go flying whenever I could, i remember being there on wet days hiding in the car and flying during breaks in the rain. Now, with free time in short supply I only go to the field if I know specific flying buddies are going. Most of the forum time I spend today, I spend on specialty sites (that would get edited out if I named :( ) where the discussion is more focused. But even those have had a massive drop off in traffic.
Posted on: 6/20/2012 12:02 PM by Author "jharkin" in the forum "The Clubhouse"
http://www.rcuniverse.com/forum/fb.asp?m=11125472

RE: Proctor-Enterprises 1:4 scale Fokker DVII Build
Great idea... There are very few build threads on this particular kit on any of the forums. You might also want to sign up and check out the Proctor sub-forum at rcscalebuilder. Lots of good ideas there...
Posted on: 6/7/2012 8:03 AM by Author "jharkin" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11109979

RE: Sig 1/5 J3 Cub, which four stroke engine?
I'm building mine with a Saito .72, only so that I can spin a scale diameter prop (14x5). I expect I'll be able to fly around at 1/4 throttle :) Remember this plane was designed to fly well on a .50 4 stroke. I'm all for overpowering aerobatic planes but I think a 91 is massive overkill on one of these......
Posted on: 6/7/2012 5:13 AM by Author "jharkin" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11109792

RE: fuel consumption of saito FA-180.
One of my flying buddies has a 180 in a quarter scale Extra. He runs a 20 or 24oz tank and gets 15+ minutes no problem. As with all Saitos, the key to low fuel consumption is to tune the idle. Saitos ship from the factory with the idle needle extremely over rich, many pilots dont tune the idle leading to an undeserved reputation as a fuel hog.
Posted on: 5/31/2012 5:38 AM by Author "jharkin" in the forum "RC Scale Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=11101020

RE: OS FX 46 piston/cylinder - who sells at a decent price?
Interesting that this came up now. I bought one of those Saturn Hobbies "plasma" sleeves for an old 46FX years ago. Engine is still running today, [edit] almost 10 years on that liner now in a screaming 16k rpm pylon ship. I dont remember exactly but I believe the coating is some kind of hard anodizing process similar to Norvel's revlite. Anyway if you come across one second hand somewhere it would be worth a shot if the price is right....
Posted on: 5/28/2012 9:25 AM by Author "jharkin" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11097362

RE: Your list of hightest quality engines?
As evidenced by the thread, there is a lot of confusion about what exactly you are asking for. In the engineering world, quality and reliability are two different (yet related) measures. [b]Quality[/b] is how well the product achieves the purpose it was deisnged for at a specific point in time. Does the thing do what its meant to and do it well. - In the automotive world you will often see this termed as "initial quality" as in the JDPower ratings etc. This typically reates things like fit and finish, quality of materials used on the interior, tightness of panel gaps, NVH and engine smoothness, etc. [b]Reliability[/b], or dependability, measures how well quality is maintained over time under use. Or how resistant to fialure the product is. - In the automotive world this is the rating of how likely/how often the vehicle will beak down and need repair. Neither measure has anything directly to do with customer service, but as we can see that is a big part of what gives a brand a great image. Speaking to the automotive analogy, its possible for an automaker to rate very well on one but poorly at another. European brands on average are great in initial build quality and mediocre to poor on reliability. Japanese brands tend to do exceptional on reliability and average to above average on quality. American brands tend to be average to above average on both. For example, BMW and Audi/Volkswagen tend to have a exceptional initial build quality and materials and absolutely miserable long term reliability. Toyota/Lexus and Honda, recent stumbles notwithstanding, statistically come far ahead on reliability. Korean and American vehicles have pushed there way from the bottom to close to the top over the last decade. As with anything there are exceptions to these generalities - Porsche having exceptional reliability and some Japanese performance cars like the 370Z doing poorly. Back to R/C engines: You are asking about gas. I have to agree with a lot of posters that Zenoahs have a reputation for being bulletproof reliable. DA also has a great reputation yet I happen to have one of the 50's with the unfixable inverted deadstick issue so it hasn't been that great to me. And there are so many other great engines out there.... in fact I cant think of any real "lemons" in the gas engine arena except maybe some of the glow conversions. Going off topic to glow...I have owned Magnums that gave me fits, and seen a lot of folks have trouble with Evolutions and GMS. I would personally rank Saito at the top of my list for 4 stoke motors but they use poor quality bearings and the gas conversions are troublesome. OS builds a great engine but they have had there share of issues over time with peeling liners and overheating 91s. Never owned one but YS seems to have a love/hate following, some folks cant get them to run well at all and others would never fly anything else.
Posted on: 5/9/2012 10:15 AM by Author "jharkin" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11074470

RE: sorry, can't keep my mouth shut about this
Threads like this amuse me... You want to buy Chinese parts but you dont want to buy them from China. uhhh? Lets be realistic, holding parts inventory is expensive for a business. I know most folks want to put the blame for everything on govt (because its easy to say and deflects all personal responsibility) but keep in mind its not just taxes, holding inventory is expensive. Imagine paying for warehouse space, rent utilities, etc all just to hold thousands of parts each of which you might only sell a handful per year at a profit of probably less than a buck. Most companies don't do it anymore because its a money loosing proposition. Many companies will just just have parts drop shipped. Perfect example, a while back I wanted to buy a rather uncommon old kit - a Sig Smith Mini. Very few people build anymore and even fewer build a real builders kit like this. So I ordered the kit from Advantage - good price but it took 2 or 3 weeks and the box came directly from Sig. Advantage just forwarded the order. I bet they sell less than 10 of those a year and probably make only $5 margin (considering they significantly undercut Sigs direct price), so if they held a few in stock it would actually be a money LOOSER for them. Its smart business. Then we get to the whole China vs. USA made issue. I personally would love to buy only American, get real quality and support US jobs. But unfortunately for many products American made no longer exists and for others the cost is prohibitive. And the reasons are more complex than many of us like to admit. Partially its our own fault because most of us buy on price alone and cheap sells. One company starts selling China made then their competitors have to or go out of business. Over time more and more work goes overseas and American wages go down so we have less money to spend and can less afford American made - its a vicious circle. But its not just our fault - consider why Chinese made is cheaper, partially its because of the low standard of living over there, but its also artificially supported by the Chinese govt through no environmental or worker protection rules, subsidizing business, and artificially controlling the exchange rate of the Yuan. And partially, in fact in large part, its our own US govt fault by having very low tarrifs on Chinese imports at the same time as China has high tarrifs on US goods (*free* trade backfiring on US jobs). On the other hand, blind brand loyalty to American made products with no regard for quality can backfire as well. Just ask anyone who owned a 1980's Chrysler... The solutions are not easy. We as consumers have to be willing to put our money where our mouth is and pay for high quality. We also have to push our politicians to get out of corporate pockets and actually pressure China to clean up its act on labor practices and currency and raise US tarrifs on imports to at least what they charge us on our exports. I'm not holding my breath on either :(
Posted on: 4/27/2012 5:07 AM by Author "jharkin" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11058801

RE: KIT vs RTF Cost Analysis
You can do cost analysis till you get blue in the face.... Bottom line is that for 99% of folks in this hobby that is NOT a deciding factor. What matters is whether or not people find building fun. This is a hobby - we all do this for FUN. Those that find building fun will build. Those who don't wont. There are 10,000 threads on this site started by hobbyists trying to convince other hobbyists that their way is better. Kits are better than arfs, arfs are better than kits, scratch is better than kit, electric is better than glow, glow is better than electic, gas is better than glow, sailplanes vs. power, heli's vs. planks, cars vs. planes. Ans I'm sure the boat people argue with sub drivers, and tankers fight with car guys. and on and on and on I never saw the point... which is maybe why Ive posted less in 10 years than some members do in a month. Just do what YOU like and let everyone else do the same!
Posted on: 1/27/2012 6:10 AM by Author "jharkin" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=10930332

RE: Product Detail / Funaero Kits
The are a very nice kit - great plans, all laser cut and I found that the parts fit and construction very nice and required less sanding and shaping than the few BUSA kits I have built. I started the 65" D.III years ago - even ran a long built thread - but I eventually gave it up and sold it half finished. It is really a sport standoff scale model and I wanted to put in more detail than was really possible. I've sense acquired a NIB Proctor second hand to start on if that gives you any sense of what I was trying to do ;) Be warned that the scale is tough to judge. Its someplace in between 1/5 and 1/6 depending on how you measure - the wingspan works out to 1/5.5 but the fuselage is too short and comes up closer to 1/6. If you put it up against a factory 3-view the proportions will look odd.
Posted on: 12/8/2011 9:32 AM by Author "jharkin" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=10849787

RE: Sad news-no more GTM 1/4 scale kits and assc's
I emailed them a while back and got a response from Glenn himself that 1.4 kits are going back into production.
Posted on: 7/15/2011 5:06 AM by Author "jharkin" in the forum "RC Scale Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=10622114

RE: Small gassers not worth the investment!
[quote]ORIGINAL: captinjohn [quote]ORIGINAL: pe reivers Small fry will be wiped away by electrics. A small nich market can hardly be profitable, so for these engines you have to rely on hobby manufacturers mainly, OR, pay a huge price per HP. [/quote] I wish you would have worded your thought a lot more clear.  Maybe in you area they push for electric....over here in the USA I would say the 20cc 30cc and the 55cc gas engine powered airplanes will sell more.  I see them electric planes indoors and that is about it.  Lots of too lite of electric airplanes set...they cannot handle much wind.  Anyway ...real engines make neat sound only a gasser can make.   Capt,n [/quote] You are making more of a baseless generalization than PE. In my area Ive seen lots of electrics all the way up to 30cc size planes. Those are not so common but electrics from 30oz park flyer to .40 size are more numerous than glow. I also still see a lot of glow but its definitely in decline. Glow under roughly .60 size is giving way to electric as PE predicts, and over 1.20 size is giving way to the great 20cc and 30cc gassers. Making any pronouncements about the entirety of the country, much less the world, based only on the group at your local field is silly.
Posted on: 7/9/2011 4:29 AM by Author "jharkin" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10613043

RE: neodymium price hike
[quote]ORIGINAL: Foxyand even I know that the 'rare earth metals' are commonly found in two types of ore (and all the rare earth metals are found in this ore, not just neodymium); monazite and bastnasite, which are both distributed evenly pretty much throughout the world. The only reason China has a larger quantity than anyone else, is due to the size of their land mass, and as I said before, the fact that they are basically the only people mining it to any decent level. It's everywhere. The approximate ditribution in the earth's crust is about 40 miligrams per kilogram; I say again, it's no rarer than cobalt or copper. Furthermore, it's not found in its metallic form, you would never say 'oh, look, here I've found a neodymium reserve' since you can't find it on its own, you would say; 'oh look I've found some bastnasite or monazite, I can get some rare earth metals from this', and to be honest, there are other metals in the ore you'd care much more about than neodymium. [/quote] Ahh the power of copy and paste....... http://en.wikipedia.org/wiki/Neodymium
Posted on: 7/7/2011 4:00 PM by Author "jharkin" in the forum "RC Electric On-Road vehicles, race cars and more"
http://www.rcuniverse.com/forum/fb.asp?m=10610708

RE: Good news for fuel prices.
I would not bet on this having any impact on our prices at all. In the short term there might be a "reaction to the news" effect that will lower the price of oil slightly, but long term the overall trend will of course continue upward. Do some research into the technicals of oil exploration and development and the current extractions costs of conventional land, shallow water, deep water, tar sands etc methods, and look at the charts (EIA, BP oil review etc) of discoveries and production over time and it should be quite clear why. The bottom line is that its getting consistently more expensive to suck the stuff out of the ground . NO avoiding that. I'd go on but this will turn political fast and get locked.
Posted on: 5/13/2011 9:35 AM by Author "jharkin" in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=10517643

RE: HALF SCALE DH 2
[quote]ORIGINAL: jumpinjan [quote]ORIGINAL: Horsepoweraviation Probably my DA150 with a prop extension [/quote] The DA150 is only 16.5hp. The full size DH2 had a 100hp Gnome engine. Even a rough power estimate (100hp * 50%) would be 50hp....You're not even close. And probably need more than 50 because of lower Coeff of lift of a scale airfoil. Also, watch out for prop extensions. They can introduce a lot of torsional problems. [/quote] The math of scaling power doesn't work that way. At 1/2 scale, the wing area is 1/4 and the cubic volume of the structure is 1/8th. That plus the lighter materials we use his model will probably weigh less than 10% of the full scale, and have a resulting much lower wing loading. Look at it another way: If a half scale needed 50hp then by that logic a 1/4 scale would need 25hp... yet most 1/4 WWI jobs fly on a G26 or G38 ish power level just fine. I bet the DA150 will be more than enough.
Posted on: 1/26/2011 6:01 AM by Author "jharkin" in the forum "RC Scale Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=10289458

RE: NEW DLE 20cc Gasser!
[quote]ORIGINAL: a1pcfixer Most gas eng ignitions require [u]NO MORE[/u] than [b]6.0 volts[/b], and you might need a regulator for your ignition. [/quote] Not true anymore. DA support has stated that unregulated A123 (6.6v) is fine. I've run this for over a year without issue 3W manuals state up to 7.5v (5 cell NiMH) is acceptable. They state 5 cell pack is preferred in fact. The newer Evolution/MVVS engines accept 6-8.5v. Their manual states 5 cell nicd/nimh minimum and they recommend a 2S lipo/LiIon. Saito recommends a 5 cell/ 6v minimum pack for the FG series gassers. Zenoah does specify 4 cell only - meaning their ignition probably cant take over 6v. I don't know about ZDZ or any other makes. Bottom line - dont just assume, read the manual.
Posted on: 8/18/2010 9:05 AM by Author "jharkin" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9942082

RE: oil mix ratios
To add to the controversy.... I fly at a field shared with an ultralight club. From what Ive seen, none of those guys run less than 50:1 oil. And 'ol fashioned mineral oils like Penzoil seem to be quite popular. If its good enough when your life can depend on it, its good enough for me. Penzoil 32:1. Simple. cheap. Goes in everything including the weed wacker and the chainsaw....
Posted on: 8/18/2010 8:33 AM by Author "jharkin" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9942045

RE: Does a Walbro Carb hold enough fuel to
Agree on the no T's - its just another source of potential trouble. Inline filters are too. I use a 3 line - and put filters on the fill and vent lines to keep the tank clean. With a felt filter clunk you could eliminate the other filters. But either way the carb line is a straight shot - no filters,T,s or unions at all. I wouldn't recommend keeping the tank full just to avoid changing the lines once a year. Unless you are flying again the next day, gas in an open vented tank will go bad after a while. Better to drain the tank and change the lines annual - which is good maintenance anyway while you check over everything else. As for the lines - other than black neoprene I dont think there is any gas line that wont harden eventually. I tried the Aerotrend blue stuff which is more flexible than tygon and even that got hard after a couple years. Just change those lines.
Posted on: 6/15/2010 1:08 PM by Author "jharkin" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=9804766

RE: Best way to tune 4 strokes
[quote]ORIGINAL: LargeScale88 Well I got alot of the ''know it alls'' at my field. Well on the B-17 i'm gonna be flying, I have to tach all the engines to get them going the same RPMs. So if the #1 engine is going 9,000, the #2-4 have to go 9,000. So I have to use a tach for that. [/quote] Do that and you are asking for trouble. 4 identical .91s wont run identical RPM even on the same exact prop/plug/fuel. Variations in wear, run time, temperature, and even how well each prop is balanced will prevent it. Tune each one properly. If there are minor differences in rpm between them I doubt you will even feel it in flight (maybe a click of rudder trim). If one is WAY off (> 500rpm) look for a problem in the setup (stuck linkage, clogged needle, pinhole in fuel line, etc). After all that if you really [b]must[/b] have identical RPMs then use throttle trim per engine.
Posted on: 6/9/2010 1:25 PM by Author "jharkin" in the forum "Beginners"
http://www.rcuniverse.com/forum/fb.asp?m=9792012

RE: Best way to tune 4 strokes
(this is going to repeat some things). The problem you describe (bogs on throttle) sounds like a rich idle. FIRST - the right prop & plug. 14x8 may be too big, but regardless prop to keep it peaked between 9500 and 11000 on the ground. 14x7 APC is good. 14x6 APC may be ok, but In my experience a 14x6 MAS is too lite - my .91 wound one up over 12000 on the ground. And use a good 4 stoke plug. Cant go wrong with the OS-F, but there are others that folks use successfully. SECOND - break in. You want the engine well broken in before you start tweaking the needles, especially the low end. Go by the directions - after a half gallon of fuel or so you can start adjusting, but note that Saitos break in slow and you will see the needle settings change for the first gallon or more. THIRD - tune Start with the high needle - find the peak at full throttle then back off 300rpm. Next work on the low end -the trick is to rapidly throttle up from idle to midrange, if it bogs its rich. Turn the low end in 1/8 and try again. Keep doing this until it will die on throttle up then back off 1/8 and you are set. Then recheck the high end. Once its tuned well it should hold a nice low idle (2000 or sometimes less), accelerate to full throttle as fast as you can move your fingers, and hold high rpm without sagging. Depending on the fuel you may or may not see a consistent smoke trail in the air when its set right. FOURTH- maintain. - Valve clearance should be checked once or twice a year depending on how much you fly. This must be done stone cold (in your shop after the motor cooled overnight). FOr best power adjust them on the tight side (.04mm) - Glow plugs get replaced when you notice a change in idling that a valve check wont fix. (Even a worn plug wont cause a hard start as long as its on battery) - Bearings get replaced when they start to make noise. For more Saito info than you ever wanted to know look at http://saito-engines.info/ and the Club Saito thread in the glow engine forum. -Jeremy
Posted on: 6/9/2010 1:04 PM by Author "jharkin" in the forum "Beginners"
http://www.rcuniverse.com/forum/fb.asp?m=9791977

RE: Bad dealings with Arizona Models aka Digital Design llc
Im usually pretty quick to call foul on the majority of vendor complaints on RCU - most of them being the "I crashed my plane and Horizon/Tower/xxx wont give me a new one free - they suck!" variety of whining. But this case is one of the few where I have to agree the horror stories , sadly, are true. For WWI there are many great companies out there you would be better off sticking with - Glenn Torrance, Proctor, Mick Reeves (UK), Flair (UK), Balsa USA. Pretty much whatever you need can likely be found through one of them. Good luck! -Jeremy
Posted on: 6/9/2010 8:20 AM by Author "jharkin" in the forum "RC Scale Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=9791469

RE: Horizon Hobbies Spectrum DX6I Malfunction that destroyed my aircraft
[quote]ORIGINAL: rambler53 [quote]ORIGINAL: jharkin I saw this thread on the front page and my first thought was ''another RCU b(*^&*^ fest...'' - the reason why so many long time RCU members leave for other sites. Irregardless I couldn't help myself ~Jeremy [/quote] Where else do they go? I know of no other site that is more reasonable, informative, and mature
Posted on: 5/12/2010 7:21 PM by Author "jharkin" in the forum "JR Radio & Spektrum Radios"
http://www.rcuniverse.com/forum/fb.asp?m=9729661

RE: Horizon Hobbies Spectrum DX6I Malfunction that destroyed my aircraft
[quote]ORIGINAL: iflyg450 I will try to find that article in AMA. They have the capacity but I would not trust them to put out the needed voltage for a spektrum system. Take it or leave, I had the exact same thing happen to me I changed the packs I use and the problem never came back even with the same rx and switch ect.. [/quote] I think I saw it too - one of Red's battery articles. The folks at Radical RC give the same recommendations. Basically the deal is that to make the high capacity AAs (2100/2300 and even 2700) they have to make the separators VERY thin to pack in as much electrolyte as possible. This gives a high capacity but on the flip side they cant handle big amp loads. So high discharge rates and anything faster than a wall wart charger kills them quick. These cells where first marketed for digital cameras etc where long run times on a small (couple hundred mA) load is the goal. For TXs these big capacity cells are great - especially the Eneloops (which seem to take a quick charge better than other high capacity cells) but I too have had only bad luck with them in RX packs. Thats where A123s shine :)
Posted on: 5/12/2010 2:56 PM by Author "jharkin" in the forum "JR Radio & Spektrum Radios"
http://www.rcuniverse.com/forum/fb.asp?m=9729049

RE: Horizon Hobbies Spectrum DX6I Malfunction that destroyed my aircraft
I saw this thread on the front page and my first thought was "another RCU b(*^&*^ fest..." - the reason why so many long time RCU members leave for other sites. Irregardless I couldn't help myself and started to read. At first I was amazed that it hadn't been locked yet but it seems to be getting constructive now which is good. I wont even add any more comments to the OP - I think we have beaten to death the fact that his attitude isn't going to help him resolve this. In my mind a couple posts such as doug47's really sum up the fundamental issue. How many RC companies do any of us know that have not had some problem at some time? Spectrum brownouts Futaba overhating issues Futaba RX ID bug Hitec carbonite gear failures OS .46 peeling liners OS .91 overheating Saitos crappy bearings... DA50 inverted dead-sticks BME engine overheating & seizures 3W ignition problems uncountable numbers of ARF problems like wing failures and folding LG .. The list goes on and on. But the thing is I've owned probably half of those "effected" products I just listed and in every case either didn't have the problem myself or found a workaround/fix. We have to remember this is a hobby and considering the limited market size and how little we are willing to pay for these products we cant expect aerospace industry level quality control. Heck even world class quality control can miss problems from time to time - just ask Toyota :( Another point to consider is the phenomenon that with any product in any industry its the people who have problems that most often post and publish reviews. More often than not the majority with a good experience don't take the time to say so. Easy to get the impression that every product is bad because of that. ~Jeremy
Posted on: 5/12/2010 1:10 PM by Author "jharkin" in the forum "JR Radio & Spektrum Radios"
http://www.rcuniverse.com/forum/fb.asp?m=9728812

RE: how many flights out of a Battery!!!
A 2700 pack on a 40 size sport ship? Why are you dragging around all that dead weight? A pack that size can probably fly your plane all week, let alone a typical field day. When I first started out I was using the old 600 mAh packs on 40 size planes and could get 5-6 flights on those no problem. I use a 2300 on my 50cc with high torque digitals (hitec 5955s) and I still get an entire day out of it. This is RC-inflation at work... massive overkill. Just charge overnight and do an occasional check with an ESV (loaded meter) and stop worrying ;)
Posted on: 5/5/2010 6:52 AM by Author "jharkin" in the forum "Beginners"
http://www.rcuniverse.com/forum/fb.asp?m=9711787

RE: Good Biplane Kit to Build
If you really want a Pitts in particular there are 2 kits I know of - Bob Dively and Toni Clark. Both are pricey ($500+) and giant scale (80"+). But very scale if that interests you.
Posted on: 5/4/2010 1:05 PM by Author "jharkin" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=9709898

RE: Knowledge Quiz for Warbird wiz
I was about to update it to also exclude recon... But Ernie got it nonetheless (I'm going to allow the He/Hs typo ;) ). I thought the Po-2 was just a trainer but I looked it up and it was indeed used in combat. The list I have: Gloster Gladiator Fairy Swordfish Polikarpov I-15/ I-152 / I-153 Polikarpov Po-2 Fiat CR.32 and CR.42 Henschel Hs. 123 Curtiss SBC Helldiver Add in recon and you have: Aero A-100 (Czechoslovakia) Letov S-238 (Czechoslovakia) Avia B-534 (Czechoslovakia) Imam Ro.37 / Ro.43 Supermarine Walrus Fairey Seafox Breguet 521 Beriev KOR-1 Mitsubishi F1.M2 Nakajima E8N1 And probably many more I dont know, not to mention dozens of trainer types... You're up Ernie.
Posted on: 4/25/2010 8:46 AM by Author "jharkin" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=9686981

RE: Knowledge Quiz for Warbird wiz
OK... Had to realy think hard to come up with something that yuo guys wont get in 5 minutes but is also not so obscure as to be boring. This is getting harder and harder. Here goes. This one is probably very easy but lets see. Question: Name at least 5 biplanes that saw [b]combat[/b] service in WWII. No trainers.
Posted on: 4/25/2010 8:38 AM by Author "jharkin" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=9686922

RE: Knowledge Quiz for Warbird wiz
I hesitated? Thought we had 24hrs to come up with one.... Some of us dont sit at the computer all day ;)
Posted on: 4/24/2010 4:21 PM by Author "jharkin" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=9685594

RE: Knowledge Quiz for Warbird wiz
Stearman was never used as a fighter... How about the Gloster Gladiator?
Posted on: 4/24/2010 6:42 AM by Author "jharkin" in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=9684773