RE: Bike engine for my 1/3 scale Sopwith pup
You need to check and see if the crank has thrust bearings. Given the application, I doubt it. If it doesn't it's a definite no-go.
Posted on: 7/25/2012 7:01 AM by Author "83scamp" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=11168455

RE: Why do we change engine mounting positions on the bearers
Yes, it will probably mess up your engine centerline. Also, remember that mounting ears are usually machined on one side to be parallel and flat for mounting. The cast tops are not square, and you could risk distorting the case and ruining the engine. I know on smaller engines, you could move the centerline up to 1/4" by mounting it on the "wrong" side of the ears. If the ears are thicker on the gasser, and I'm assuming they are, it could put your centerline off even more. So your cowl won't line up correctly( assuming enclosed engine), or even worse, could create an evil handling plane because the thrust line isn't correct.
Posted on: 6/23/2012 8:20 AM by Author "83scamp" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11128739

RE: How often should we run our engines.
6 months is probably a good recommendation. I can tell you, I just got out my gasser this week from being in storage for 3 years. I always store with the tank empty. US Engine 41cc, took it to the field, two flips to prime it, rotated it back against the spring starter, and vroom!! It was idling. Never missed a beat. Try that with Glow!!! Now I remember why I love gas.....[:D]
Posted on: 6/23/2012 6:52 AM by Author "83scamp" in the forum "Gas Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11128671

RE: Back in the game- Aircraft Radio question
I just got back into the hobby after a few years as well. Luckily, I kept all my stuff. I had to install new batteries in everything, but it all works, just like when I put it away. I currently have 6, 72mhz radios, and until they ban them( or they quit), that's what I'm flying..... 2.4ghz is cool, and eventually I'll get there, but it it ain't broke, don't fix it.... A lot of guys are unloading 72 mhz stuff on ebay. If you watch, you can get some killer deals on top notch stuff.
Posted on: 6/22/2012 6:43 AM by Author "83scamp" in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=11127580

RE: Digital Servos + 2000mAh NiMH = Huh!?
I guess I'm a little old fashioned, but why in the world do you need digital servos in a .25 size model? Geeze, I'm flying an 80" scratch built plane with a US Engines 41cc with nothing more than Hitec HS-545's and a decent 2500mah Nimh pack. It works fine, and I can fly most of the day with it. If I need more juice, I have a field charger. If you need more amp capacity buy this pack: http://www.maxxpacks.com/product_info.php?cPath=80_83_317&products_id=1723 I've bought several packs from these folks, and they have all been flawless. The pack referenced above is rated for 30 amp draw. That should be more than you ever use. To read some of the threads on this forum, you would think those of us who have been flying for 25+ years should have crashed every time we went up. I mean, how did we survive without 2.4gHz, liFe packs, Lipo's, and digital servo's?[8|] Yikes, all my equipment is still 72 mhz, I still run Nicd's & Nimh's, and I manage to come home from the flying field every weekend with my planes in one piece. How do I do it????[;)]
Posted on: 6/22/2012 4:53 AM by Author "83scamp" in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=11127487

RE: Need a 6 channel am receiver
I didn't want to be the bearer of bad news, but you're right. AM is pretty much dead. I pretty much got out of the hobby for about 10 years, got active again last year. Wow what changes. I mean, my "newest" radio is a Hitec Flash 5!! I bought that shortly before I quit flying. All my stuff is FM, and it works perfectly. I have no plans to upgrade until they become unreliable. The 2.4 Ghz stuff is great, but not in my budget right now.
Posted on: 6/20/2012 11:45 AM by Author "83scamp" in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=11125446

RE: Need a 6 channel am receiver
[quote]ORIGINAL: karolh He is searching for an AM receiver not an FM. karol [/quote] And your point? The Rx I linked to is AM.....
Posted on: 6/20/2012 4:46 AM by Author "83scamp" in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=11124874

RE: Need a 6 channel am receiver
Ebay is your friend. Lots of guys unloading 72Mhz stuff. I just scored a deal on a pair of JR 6 ch RX's. Here is one: http://www.ebay.com/itm/NICE-FUTABA-FP-R7H-72-MHZ-7-CHANNEL-AM-RECEIVER-ON-CHAN-22-CRYSTAL-NOT-INCLUDED-/290699732100?pt=Radio_Control_Parts_Accessories&hash=item43af0de484
Posted on: 6/19/2012 6:26 PM by Author "83scamp" in the forum "RC Radios, Transmitters, Receivers, Servos, gyros"
http://www.rcuniverse.com/forum/fb.asp?m=11124505

RE: Building a Dynaflite Super Decathlon
[quote]ORIGINAL: Turbo-Dreams [/quote] Sorry to hear about your plane, but I am really digging the Alfa 159 in the backgroud!!! Beautiful car, I wish we could get those in the States....
Posted on: 5/14/2012 5:22 AM by Author "83scamp" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11080026

RE: Building a Dynaflite Super Decathlon
I see a lot of discussion here regarding what to power one of these Decathlon's with. A lot of you have chosen to go considerable larger than Dynaflite recommends. Here is a sample of how a real Decathlon flies. Just food for thought for those building one of these planes: http://www.youtube.com/watch?v=gLHvcCLMA9o
Posted on: 5/7/2012 8:44 PM by Author "83scamp" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11072490

RE: Building a Dynaflite Super Decathlon
I'm glad you're flying that plane in the middle of nowhere, at least that way nobody else was going to get hurt. It looks to me like the plane was still tail heavy. Did you see the way it drug the tail around during turns? Classic sign of a tail heavy plane. My guess is this plane also requires a little coordinated rudder for turns as well. Most scale planes do. Truthfully, a plane that flew like that, should never have been put through those manuvers. It was dangerous to fly in a circle, let along high angles of attack that would force a stall. Looks to me like there were some pretty serious issues with the airframe. Personally, I think it ended the best way it could: as kindling for a bonfire. An airframe that messed up needs to be destroyed before somebody gets hurt. I'm glad you at least had sense enough to fly it by yourself. If you had brought that to our field, you would have been asked to leave.
Posted on: 5/7/2012 5:00 PM by Author "83scamp" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11072200

RE: Building a Dynaflite Super Decathlon
[quote]ORIGINAL: cshahrdar you caught that pretty good what happened was i took plane with a cross wind, my mistake everyhting else people say is true and i am learning from that what you saw is also accurate, when i saw the wind was making it roll right, i wanted to make plane completely upside down to avoid the most damage, which i was able to do so i did make ailerons to right turn after i immediately saw the cross wind rolled plane to right [/quote] OK, so let me get this straight. You are at low airspeed, low alititude, and high angle of attack, and you somehow think you are going to pull this manuver off?? Add in the cross wind, and this was doomed to failure from the start. No offense, but I think you need to sit down at this web site: http://www.grc.nasa.gov/WWW/k-12/airplane/bga.html This is a good basic intro to aircraft areodynamics, which a lot of modelers need more of IMHO. I've been flying R/C for over 20 years, and probably 80% of the crashes I have witnessed were due to the pilot not really understanding what makes an aircraft fly. They yank on the sticks, and assume the plane will respond, which isn't always the case.
Posted on: 4/28/2012 8:34 AM by Author "83scamp" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11060113

RE: Building a Dynaflite Super Decathlon
[quote]ORIGINAL: lamarkeiko I increased my hinge mortice depth in the rudder as Zor mentioned on a previous post, and it resulted in a nice almost no gap between rudder and fin. I'll do the same with all my other control surfaces. Getting back to the subject of which gas engine to put on my SD, I originally was under the impression that I had to go with a Chinese made engine if I wanted gas. Now I realize there are more gas engine makers out there available that are not made in China. With that knowledge now, I am concentrating my engine search on those resources. Two engines I am very much considering are a Mintor 33cc and an OS GT-33. I believe they are both fairly new to the market. The specs on them are fairly close. They are both beautiful looking engines. Prop mounting looks different. I'd appreciate any input out there on these two engines. Espescially from first hand use or seeing them perform. Would like an easy tune and operation for my first gas. Any other non-Chinese brands that may be good that I haven't considered, I'd like to hear about. Please exclude the Zenoah, because I really don.t want to go that heavy. Thanks Lamar [/quote] You can try Syssa: http://www.syssaaircraft.net/sap.html They are built in the USA.
Posted on: 4/25/2012 12:30 PM by Author "83scamp" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11056432

RE: Building a Dynaflite Super Decathlon
[quote]ORIGINAL: cshahrdar yes, you are correct, the strut is what i meant. thank you, that is what i meant. however, in the building instructions, they stated how the struts could be used to adjust the wing washout? which, if the wing is warped, how could this help any. i have measured the wing and spar incidence using the hangar 9 meter. both wings, and root, are even. the right wing at its tip has less washout than the left wing at its tip. the left wing has 1 degree washout at tip relative to root. the right wing is o at tip relative to root. do you think this would account for the plane rolling to left? or the engine does not have enough right thrust and it is a torque thing? [/quote] This most definitely could be your issue. It can also lead to nasty stall tendencies in the plane as well. The right wing will stall first, which could lead to the plane snapping right during a stall. Also, you are going to have to use aileron trim to counteract the difference in washout which can lead to even more trouble. The wing will always be fighting itself. The "D" tube construction of this wing is going to make it almost impossible to correct the washout problem. This wing is incredibly rigid once built. If you built the plane according to plans, it already has plenty of right thrust built into it. Unfortunately, it sounds like you have a lot of issues built into this plane. Not sure there is an easy fix for any of it.
Posted on: 4/23/2012 6:21 AM by Author "83scamp" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11053275

RE: Building a Dynaflite Super Decathlon
[quote]ORIGINAL: do335a Don't trouble yourself with that. The taper is only between two ribs and amounts to nothing. You will not compromise the plane in any way if you don't bother to taper the spar doublers. You would save maybe a fraction of an ounce of weight in what is already a very porky airframe. Won't amount to a pinch and not worth the effort. Just cut the doublers to the appropriate lentgth and laminate them to the spars. There are many other places where you can save much more weight than that without hurting anything and with a lot less effort than cutting a taper. [/quote] I don't know that I agree with that statement. By not tapering the end of the spar doubler, you create a potential stress riser right where the doubler ends. The whole point of tapering the end of the doubler is to gradually transition the load to the thinner section of spar. The struts on this plane are for looks only, by not tapering the doubler, you significantly increase the load at that spot, and if the wing ever fails, it will fail there. I personally will follow the directions on this step. I don't want to accidentally end up with a folded wing. It works on a Corsair, not a Super Decathlon.
Posted on: 4/3/2012 8:29 AM by Author "83scamp" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=11026603

RE: Good matching paint for Ultrakote
That is the actual color mixing chart, not prices. What you are looking at is the grams(g) of each color used in the formula to get an exact color match. All paint companies mix by weight, not volume. Looks like most of their paints are about $15 for 1/2 pint.
Posted on: 3/9/2012 6:49 AM by Author "83scamp" in the forum "Kit Building"
http://www.rcuniverse.com/forum/fb.asp?m=10992791

RE: Cunningham's Lazy Ace
Very impressive. I wish I could cover like that. The plane is beautiful. Can't wait to see it finished.
Posted on: 3/1/2012 6:28 AM by Author "83scamp" in the forum "Giant Scale Aircraft - General"
http://www.rcuniverse.com/forum/fb.asp?m=10982751

RE: Big Hots?
I just bought a set of plans off ebay. The cowl and wheel pants are available from Fiberglass Specialties. I haven't tried to source landing gear yet. I'm thinking that the gear from my Dynaflite Super Decathalon my work, I just have to dig out the kit and take some measurements. I have a couple other projects ahead of it, so I probably won't start on it until next winter. I have an Ultrasport 1000 to finish, and a Dynaflite Super Decathalon to start!
Posted on: 2/29/2012 7:16 PM by Author "83scamp" in the forum "Giant Scale Aircraft - General"
http://www.rcuniverse.com/forum/fb.asp?m=10982356

RE: another darn ryobi post (ryobi performance modification, analysis and comparison)
I've subscribed to this thread. I will be watching, as I have 4 of these little beauties at home that will be going on planes eventually. They are all virtually brand new(less than 1/2 hour each). One is going on a Dynaflite Super Decathalon, 2 are reserved for my Ziroli B-25(a someday project), and the last one.... ?? I made my own converstion kits for all of them. Two are short shaft, 2 long shaft. Looking forward to more info on these motors!
Posted on: 2/24/2012 5:01 AM by Author "83scamp" in the forum "Engine Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=10973542

RE: what is best replacement for a UltraStick120?
Closest thing I am aware of is the Great Planes Giant Big Stick. But it's rates for 25-35cc engines. Might be a little big for what you want.
Posted on: 2/20/2012 8:44 AM by Author "83scamp" in the forum "Giant Scale Aircraft - General"
http://www.rcuniverse.com/forum/fb.asp?m=10967441

RE: Ace GLH-II WOOT!!
If I were you, I'd put a Norvel Big Mig .074 R/C on it. That would make it a real screamer.
Posted on: 1/7/2012 6:09 AM by Author "83scamp" in the forum ""1/2 A" & "1/8 A" airplanes"
http://www.rcuniverse.com/forum/fb.asp?m=10896067