RE: Addiction wood buildJapan
I've seen them and I agree!! There are some terrific builders here, too. The quality of ARFs has virtually eliminated the need to build, but there are still a few builders out there (hopefully not a dying breed[:D] ) WB
Posted on: 11/20/2009 10:32 AM by Author "flywilly" in the forum "Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9267412

RE: Building my MK ARROW, flap question
I've never seen one with them. I would check the original Model Airplane News construction article which may have specific information. I'll try to find the article. I would fly the Arrow without flap coupling first. If they work as well as coupled flaps in C/L aerobatics, then the corners will be SQUARE and pretty violent.
Posted on: 11/17/2009 10:40 AM by Author "flywilly" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9260023

RE: Building my MK ARROW, flap question
Hi David, First, Matt designed a successor to the Arrow (before the Joker) called the Granat. It appears to be a stretched Arrow, but I don't have any specifications. There may be a photo on the Matt website (which I can't seem to locate[&o] ). I've always wanted to try to copy the Granat. Matt never flew it in a major competition (he flew the Arrow in the '79, '81, and '83 worlds - the original prototype I believe; it had over 2,000 flights on it for the '83 competition). The Arrow is a very straightforward build. I was fortunate to be able to buy the MK fiberglass 'canopy' (saved a lot of work!) which Singapore hobbies may still have. Relatively easy to make one from scratch as the base has a constant width (if memory serves). I did truncate the turtle deck a little bit to allow for a slightly longer tuned pipe setting. Great flying airplane in any conditions! -Will
Posted on: 11/17/2009 10:34 AM by Author "flywilly" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9260003

RE: 140rx's days numbered?
Hey Rendegade, If you're going to design something for the 140rx that is FAI P11 & F11 capable, I'll throw in a few more requirements: must be able to fly the schedules in 95F temp, 70% humidity and 25mph crosswind (in or out). Please let me know when the plans are finished; I'd love to buy a set from you! [;)] -WIll
Posted on: 11/17/2009 10:24 AM by Author "flywilly" in the forum "Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9259980

RE: Building my MK ARROW, flap question
I agree with Stuart - leave them off. I did on the 2 Arrows I scratch built and never missed them. Will
Posted on: 11/16/2009 9:57 PM by Author "flywilly" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9259090

RE: Best Retracts for Curare
I prefer air for 3-gear and mechanical for 2- gear set-ups. 3 gear mechanical requires either 2 retract servos or complex linkage for 1 servo. As for firewall vs tank floor (belly) mounting: the primary reason for flat mounted nose gears was to make space for inverted mounted engine set-ups (Aurora, Citation, Atlanta, etc.) You might consider the OS 75AX, too. Plenty of power without a pipe. You can also look into a new Rossi - still a great engine. -Will
Posted on: 11/14/2009 9:44 PM by Author "flywilly" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9254220

RE: MK Beetle Build
Say 'Hi' to Dorothy and Toto... [:D] Nice work, by the way!!
Posted on: 11/14/2009 9:37 PM by Author "flywilly" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9254208

RE: the blue headed OS .67 hanno special is back
Geez, we beat it to death a year ago. I might buy it to satisfy my curiosity and put and end to these 'discussions'[:)] I'd like to see how much machine work has been done and I'm really curious as to how it runs... it's only $$$ [X(] Will B. PS plus I feel guilty for being involved somewhat negatively in the original thread[&o]
Posted on: 11/3/2009 8:01 PM by Author "flywilly" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9226218

RE: Deception
Hi Ed, I know you've mentioned your disappointment with OS side a rear exhaust engines of that era. They were not as potent as Rossi or YS. I flew several Deceptions with both the OS61VF and the YS FR. The YS definitely had a significant performance advantage. The Deception was very 'draggy' compared to other designs of the era, but a great flying airplane especially if built under 9 lbs. You can still design, build and fly your own pattern ship - it can be very rewarding even if you don't get to compete with it. Personally, I can't see the BPA having a problem with anybody competing with their own design. -Will B.
Posted on: 11/3/2009 7:57 PM by Author "flywilly" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9226208

RE: YS 2 Strokes & After Run Oil
Hi David, I run K&B 1L plugs. I've been using them for 30 (or so) years with excellent results. I'm not sure how much support I'd get from my club to put on a BPA event. Back in the 'DAY', the club I belonged to (SNHRCC) would provide judges as well as all the support personnel. We'd get 40-60 competitors [X(]. Castor oil... I still love the smell (I've been flying model airplanes since I was a kid back in the mid '60s), but not a big proponent of the stuff anymore. Two basic reasons: 1) if used to store an engine (or just left in it for a long time) it will gum up everything - including the silicon parts in OS pumps and YS regulators (a few days soak in methanol usually 'dis'solves the problem[;)] ); 2) under normal running conditions it will create 'varnish' on the piston sleeve which causes the engine to run hotter which accelerates the deposition of more varnish - this may take a lot of flights, but if you are a pattern flier you probably fly a lot of flights. If castor oil is working well for you, great! I'm just very happy with the current synthetics! -Will B.
Posted on: 11/2/2009 6:25 PM by Author "flywilly" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9223360

RE: MK MATTLAS 40
Great Looking Atlas!!
Posted on: 11/2/2009 5:58 PM by Author "flywilly" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9223288

RE: OS 160 and aeroslave
Thanks guys for all the very useful information about the 'caveman' set-up. Really just wanted to confirm what I already knew. About 2 years ago I put an ARF Explorer 90 into the air with an OS 120AX, stock muffler and 'caveman' set-up. I did use the soft mount that came with the 'kit' which worked quite well. Boy, was I ever convinced. The engine ran perfectly for 180 flights (1 plug change). Set just a tad rich, the engine had loads of power, never sagged in verticals and never quit once. Now I gotta try this with a 160 (I guess I won't be needing the pump and pressure fitting [:)] ) Regards, Will PS I'm also flying a Silent 90 with an OS 61VF (piped 12x8 apc) and the 'Caveman' set-up - 200+ flights and no problems (except the tank is too small <10oz> and I've had a few out-of-fuel deadstick landings) - Cavemen rule[:D][:D]
Posted on: 11/2/2009 5:48 PM by Author "flywilly" in the forum "Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9223264

RE: Ariel
According to the forum title anything prior to 1996 belongs here - the Ariel definitely qualifies. Personally, I think it should be simply a rolling 10 year limit (anything prior to 10 years ago today, whatever today may be). At the FAI level even 5 years is considered 'dated'. -Will B.
Posted on: 11/1/2009 7:47 PM by Author "flywilly" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9221032

RE: Pictures/Text of
WOW, that kit looks brand new! Enjoy! -Will
Posted on: 10/31/2009 9:20 PM by Author "flywilly" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9218667

RE: Curare 40 original MK kit
Hey David, You're a member!![;)] That was easy!! I've done the 'oiling the plans' trick a few times about 4 decades ago - messy and it ruins the plans. Copy the plans first if you go that route. The reverse image copy is the best option. You can also build one panel right side up (the 'right' one) and one upside down (the left one) on the available plan. I'm pretty sure the Curare 40 has a symmetrical wing so there shouldn't be any issues. Dry assemble and see if it looks ok. Good luck, Will
Posted on: 10/31/2009 9:16 PM by Author "flywilly" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9218656

RE: OS 160 and aeroslave
Thanks Dave. Just a couple more questions: What fuel? Prop? Glo-plug? And are you using large or regular size fuel tubing? Thanks again, Will
Posted on: 10/31/2009 9:07 PM by Author "flywilly" in the forum "Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9218645

RE: Curare 40 original MK kit
There are some basic assembly diagrams on the plans. David's advice is spot on. The parts fit is excellent. Please feel free to ask as many questions here as you need or want. There's lots of expert advice available and is disseminated freely [:)]. I also have the MK 40 sized Curare kit which I can refer to if necessary. Happy Building, Will B. MKLA - MK lovers of America[:D]
Posted on: 10/30/2009 9:11 PM by Author "flywilly" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9216389

RE: Atlanta 60 and Engine - HELP
Hi Le Fou, The OS 61VF should work assuming the tank is not too far (I don't know how far you can go here) away from the engine. The Tank C/L is above the engine if starting upright, but below it if starting inverted. I know it is a bit of a pain, but I eliminated the problems of starting inverted engines by building a cradle to hold the airplane inverted for starting (regardless of the fuel delivery system of the engine). How far is the tank from the firewall? The information above is correct, the Atlanta was designed for a the OS pumper or YS (the short stroke version as the LS was not yet available) or Enya pumper. Great flying airplane when you get the power issues resolved. -Will
Posted on: 10/30/2009 9:05 PM by Author "flywilly" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9216373

RE: YS 2 Strokes & After Run Oil
Hey David, Any chance of a BPA event being held in northern Virgina? -Will
Posted on: 10/30/2009 8:53 PM by Author "flywilly" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9216350

RE: OS 160 and aeroslave
Hi Chris, It sounds like the basic set-up of the unpumped 60 sized engines from the 'good OLD days' [;)] ('70s to mid '80s). Thought most of the guys running pumps (usually Perry - like Dave Brown or YS regulated pressure) still had the tank next to the firewall as there wasn't any other place to put it! Since you are using a bladder tank (which I have not used), I presume you could not use a small bladder tank as a header tank with a larger tank on the CG. I tried this when the ST2300 first came out and the engine ran very well with this set-up - very close in power to the OS 1.40RX. Thanks for the information, I will be giving it a try! -Will B.
Posted on: 10/30/2009 8:51 PM by Author "flywilly" in the forum "Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9216341

RE: YS 2 Strokes & After Run Oil
Ultra-oil
Posted on: 10/30/2009 10:46 AM by Author "flywilly" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9214841

RE: YS 2 Strokes & After Run Oil
Performance Specialties makes an excellent after-run oil completely compatible with silicon components found in OS pumps and YS regulators. Mobil 1 is also supposed to work well, but I've never tried it. -Will B.
Posted on: 10/29/2009 6:55 PM by Author "flywilly" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9213283

RE: GP Illusion for Sale
Ooooooo... very tempting!![:D] Is the FR new, too? Both pipes -605? Just curious. Very fair price, too. Need has nothing to do with it, by the way... it's all about want[:D][:D] -Will
Posted on: 10/27/2009 8:55 PM by Author "flywilly" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9207560

RE: MK Thunderbird Mark II or III or ?
Hi Bryan, Ya, 320cc will barely allow decent flight time on a good 45/46 size engine these days![:)] I have wondered, myself, if the Thunderbird was Kato's first pattern design; I think yes. I have a Thunderbird 40 kit - yes they are relatively rare. I bet the gentleman in Korea (who has 2 MK kits on ebay right now) might have one. -Will
Posted on: 10/27/2009 8:50 PM by Author "flywilly" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9207537

RE: MK Thunderbird Mark II or III or ?
Hi Bryan, It is definitely pre-1976 and (99% sure) probably was designed prior to 1970. Unfortunately, I don't think I can document the origins accurately. As for your modifications (which all sound good, though I'm not sure a 16oz tank is really needed, but the original probably had a much smaller tank as it was powered with a pre-schnuerle engine) I believe the SPA has some limitations on changes, but I know they allow nose shortening/ tail lengthening to accommodate the ubiquitous OS 90 Surpass; so I think your changes are quite acceptable! I'd love to see some construction photos and, of course, the finished airplane. Happy Building, Will B.
Posted on: 10/27/2009 11:41 AM by Author "flywilly" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9205868

RE: Ariel
Is he still making kits? I bought a Zlinn from him several years ago - excellent quality!
Posted on: 10/23/2009 8:33 PM by Author "flywilly" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9197102

RE: Looking for Pipe and header for OS 140
Karl Mueller makes custom headers (best you can buy), but he has been laid up with back problems for the past 2 months or so. He had planned on judging at the worlds in Portugal, but his back sidelined him, unfortunately.
Posted on: 10/20/2009 5:19 PM by Author "flywilly" in the forum "Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9188847

RE: Engine choice?
Screaming engines are OK for Pylon racing but usually much less efficient for pattern. Horsepower generated at 18,000 rpm is pretty useless. The EU1-A needs a lot of thrust, the screaming only happens after the crash [:D]. The YS FR was significantly more powerful than the OS 61VF - I ran both until the OS 61RF-ABC-P was released. The YS was still very powerful even with a 12x9 prop! Try all the engines and various props (I know, easy for me to say...): 11x7 to 13x9. Post some photos of construction and the finished airplane; we'd all love to see! -Will
Posted on: 10/13/2009 9:32 PM by Author "flywilly" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9171173

RE: SATURN SE
Hey Phil, Is that the original Summit design? I always loved the look of that model. The later SUmmits, especially the III was much more jet looking. Is the Legend 5 a Piorun kit? Was that a 60 sized version or the later 1.20 size? Some NICE projects!! -Will B.
Posted on: 10/13/2009 9:24 PM by Author "flywilly" in the forum "Classic Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9171153

RE: I cannot dispute this statement
Hey Mike, I understand how thicker airfoils work, but what is the principle behind thicker trailing edges? I think Dave Von Linsowe (maybe somebody else) experimented with thicker TEs at least 10 years ago. The TE was actually thicker than the surface immediately in front of it. Regards, Will B.
Posted on: 10/13/2009 9:11 PM by Author "flywilly" in the forum "Pattern Flying"
http://www.rcuniverse.com/forum/fb.asp?m=9171121