RE: Simulated smoke
I don't think so. The smoke normally saw strong winds when I used it on my 3D plane. It will make for a fun experiment.
Posted on: 11/18/2009 7:14 PM by Author "Greg Covey" in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9263811

RE: motor for dynamax fan
Those questions are difficult to answer because they are subjective to setup. In general, the Neu inrunners are more efficient than any outrunner and can provide more power depending upon the correct selection for your desired cell count. Some folks have been pushing the Scorpion outrunners beyond their ratings with good success. This also depends upon how cool the motor runs and keeping it properly lubricated. Your application and desired performance are only part of the decision on which motor to use.
Posted on: 11/17/2009 9:09 AM by Author "Greg Covey" in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9259845

RE: Hoffman Magnetics - Out of business or what?
Sorry, no good suggestions. I don't have any EDFs with 60mm fans. The biggest upgrade for the SU-34 seems to be using a better 25C battery around 4AH. Good luck!
Posted on: 11/17/2009 9:02 AM by Author "Greg Covey" in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9259838

RE: E-flite Deuces Wild 25e2 ARF
Yes, I changed to 12" counter-rotating props and saw virtually no difference in power level. The extra ground clearance was nice. I painted the wood props black so they looked nice on the model. The thicker wood hub required different adapters though. Next season, I may try some 11x7 3-blade Master Airscrew props. They are black so they look nice but they are not counter-rotating. It will be interesting to see if I have any torque issues.
Posted on: 11/16/2009 8:11 PM by Author "Greg Covey" in the forum "Electric Aerobatic & Sport Planes"
http://www.rcuniverse.com/forum/fb.asp?m=9258826

RE: EDF Predator UCAV from Nitro Planes
Nice flights. The afterburner lights are way cool! Do you have that documented? What LEDs did you use? The Predator UCAV is a stable flier and seems to handle higher speeds well. The tricky part is to have the proper CG and land it fast enough so that the tail doesn't drop on you. It looks like you have those areas covered well.
Posted on: 11/16/2009 8:04 PM by Author "Greg Covey" in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9258799

RE: motor for dynamax fan
You can find several motor choices for the Dynamax fan at [link=http://www.dyn-e-max.com/fan_kits.html]Dyn-E-Max[/link]. Fred makes custom adapters if you really want to keep things cool. The Neu inrunner motors are your best choice for quality but they are considerably more expensive than the Scorpion outrunner option. Good luck!
Posted on: 11/16/2009 7:52 PM by Author "Greg Covey" in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9258762

RE: Simulated smoke
About six years ago, I did a review on a smoke system for electric planes called, [link=http://www.rcuniverse.com/magazine/article_display.cfm?article_id=215]Installing an R/C Smoke System[/link]. Hobby Lobby still sells the cartridges [link=http://www.rcuniverse.com/magazine/article_display.cfm?article_id=215]here[/link]. I may plan to revisit this system for a winter EDF project. The main issue is that you can start the smoke cartridges by remote control using a spare transmitter switch but you can't stop it. The duration of the smoke is determined by the length of the cartridge.
Posted on: 11/16/2009 7:42 PM by Author "Greg Covey" in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9258730

RE: Hoffman Magnetics - Out of business or what?
They are not out of business, only out of the R/C business. If you really want one of their products, several vendors still have some stock left.
Posted on: 11/16/2009 7:33 PM by Author "Greg Covey" in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9258710

RE: EDF Predator UCAV from Nitro Planes
MJ, Your new weight should be fine. Just remember to maintain the same CG. :) Good luck!
Posted on: 11/15/2009 3:15 PM by Author "Greg Covey" in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9255536

RE: FULL Scale EDF- F- 100D Sabre
Hi Ilja, I agree with J-C, your builds are very impressive! Thanks for posting photos and showing your progress. Regards.
Posted on: 11/15/2009 2:59 PM by Author "Greg Covey" in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9255508

RE: TOLEDO SPECIAL 40 ARF by Hangar 9
The video below is the maiden flight of the Toledo Special from Labor Day weekend. We were all impressed with how well it performed and how easy it was to take-off, fly, and land. The plane will fly strong aerobatics or simply cruise around at a slower pace. If you like the way it looks, you'll love the way it flies! [link=http://www.gregcovey.com/reviews/ToledoSpecial.wmv]Lynn Bowerman Test Flying the Toledo Special[/link] (19meg) [i]flying photos and video by "Papa Jeff" Ring[/i]
Posted on: 11/13/2009 4:23 PM by Author "Greg Covey" in the forum "Electric Aerobatic & Sport Planes"
http://www.rcuniverse.com/forum/fb.asp?m=9251497

RE: Good 36mm inrunner motor for a 101 fan?
Keith, I would not recommend using that heatsink due to the cross direction of the fins. You really need a heatsink that compliments the direction of air flow (like the 3939 below) because it maximizes cooling and minimizes turbulence.
Posted on: 11/4/2009 8:48 AM by Author "Greg Covey" in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9227253

RE: Good 36mm inrunner motor for a 101 fan?
Keith, One other option is to change your existing 101mm DF to a 90mm Wemotec Midi Pro and use your existing Feigao motor. The 74mm motor length will extend enough to use a low-cost [link=http://www.maxxprod.com/mpi/mpi-29b.html]ACC3939 36mm Motor Heat Sink[/link] for $5. You nailed it on the head with your heatsink comment. If you look at the photos in my latest [link=http://www.rcuniverse.com/magazine/article_display.cfm?article_id=1153]AMP'D column[/link], you'll see why my Medusa Research motor lasted all summer without issue. Using a motor heatsink instead of covering it with a tail cone is key to the longevity. Regards.
Posted on: 11/2/2009 7:34 PM by Author "Greg Covey" in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9223547

RE: Good 36mm inrunner motor for a 101 fan?
The [link=http://www.castlecreations.com/products/neumotors/nm1500.html]1500 Series[/link] has a 39mm diameter. Not sure if it would fit but if people are stuffing Scorpion outrunners in the 101mm OD DFs then it would probably be ok. The advantage of the 1400 series is that it will fit in many different DFs. I'll be testing some of these questions soon as I have most of these products on order. I also have some of those crazy new aluminum DFs coming. I am curious to compare them to the Wemotec Midi Pro standard.
Posted on: 11/2/2009 8:17 AM by Author "Greg Covey" in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9222046

RE: Good 36mm inrunner motor for a 101 fan?
Keith, The place to buy Neu motors is to order them right from Castle Creations. You'll want something in the [link=http://www.castlecreations.com/products/neumotors/nm1400.html]1400 Series[/link]. I'm using a 1421/1.5Y on 8s in my Wemotec Midi Pro for 2500 watts. It may fit your 6s-8s requirement on the larger 101mm rotor that has less blades. Mark_D has some good suggestions although I have reservations about the fact that [i]"outrunners shed the heat from around the magnets better and are lighter"[/i]. In my experience, outrunners cannot shed their heat as well as inrunners and are heavier for the same reason...the huge outer rotating case. They are less efficient and also cannot spin the high RPMs that a quality inrunner can provide. That being said, they are a great lower cost alternative and the Scorpion quality is great. Regards.
Posted on: 11/1/2009 3:44 PM by Author "Greg Covey" in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9220502

RE: NEU Motor trouble
Use this e-mail address below and they will take care of your problems. I have not seen this before. repairs@neutronics.com
Posted on: 10/31/2009 6:28 PM by Author "Greg Covey" in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9218313

RE: Good 36mm inrunner motor for a 101 fan?
AK, That is indeed a good question. So far, in my 101mm applications, I have been using 90mm WemoTec Midi Pro fans because they have a dynamically balanced rotor. I have not seen any issues using a 12s setup that delivers 3300 watts and 10lbs of thrust. A start to your answer would be that a Neu inrunner will be the best choice, but I am not sure which one to use for 6s to 8s on the 101mm DFs. A good second choice that is less expensive would be an ARC motor at [link=http://www.lightflightrc.com/HTML/products/ARC-36mm.htm]LightFlightRC[/link]. Most people using the 101mm motors are selecting the Scorpion outrunners. Good luck!
Posted on: 10/31/2009 6:24 PM by Author "Greg Covey" in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9218298

RE: Parkzone NEW Messerschmitt Bf-109G PNP and BNF
Very nice! I like it.
Posted on: 10/29/2009 6:13 PM by Author "Greg Covey" in the forum "Park Flyers & Backyard Flyers"
http://www.rcuniverse.com/forum/fb.asp?m=9213178

RE: Parkzone NEW Messerschmitt Bf-109G PNP and BNF
For our ParkZone Bf-109 flight testing, the weather was sunny but it was a cool 51 degrees F outside with winds blowing from 10mph to 20mph. Not great conditions for test flying a parkflyer model but it flew well with plenty of power. Team JR's, Devin McGrath, put the Bf-109 through a series of maneuvers to test its agility and power. Flight times were about 10 minutes and we tested both a hand-toss and gear take-off all on the same battery charge. [link=http://www.gregcovey.com/reviews/ParkZoneBf109.wmv]ParkZone Bf-109 Test Flying Video[/link] (19meg) In the video, I call the the model an Me-109. Originally the aircraft was designated as Bf 109 by Reichsluftfahrtministerium (German Aviation Ministry, RLM), since the design was submitted by the Bayerische Flugzeugwerke (literally "Bavarian Aircraft Factory") company. However, the company was renamed Messerschmitt AG after July 1938 when Erhard Milch finally allowed Willy Messerschmitt to acquire the company. Subsequently, all Messerschmitt aircraft that originated after that date, such as the Me 210, were to carry the "Me" designation. Despite regulations by the RLM, wartime documents from Messerschmitt AG, RLM and Luftwaffe loss and strength reports continued to use both designations, sometimes even on the same page. For more history on the Messerschmitt Bf-109, go [link=http://en.wikipedia.org/wiki/Messerschmitt_Bf_109]here[/link].
Posted on: 10/29/2009 12:34 PM by Author "Greg Covey" in the forum "Park Flyers & Backyard Flyers"
http://www.rcuniverse.com/forum/fb.asp?m=9210482

RE: Great Planes Sequence F3A
Hi Joe, I'm glad you enjoyed the combination aerobatics/pattern/3D demo flight. It showed that the Sequence can come out to play on windy days and has plenty of power using the stock setup. Although I have not had any problems with the RimFire motors myself, I have had seen reports by others that have had problems. Granted, the details of what may have caused these problems are not always revealed, so, at the very least, you can suspect a few quality issues and some possible user abuse. One local pilot had a RimFire motor de-magnitize on him but he was over-propped doing 3D flights that really heated the motor. The Sequence built-in cooling design is excellent so as long as you stick to the recommended voltage and prop sizes, I would not expect any problems. Regards.
Posted on: 10/29/2009 9:25 AM by Author "Greg Covey" in the forum "Electric Pattern Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=9211895

RE: Parkzone NEW Messerschmitt Bf-109G PNP and BNF
cjg, Thanks for the kind words. I hope to to edit my video tomorrow and will post it soon. Here are a few more photos.
Posted on: 10/27/2009 8:02 PM by Author "Greg Covey" in the forum "Park Flyers & Backyard Flyers"
http://www.rcuniverse.com/forum/fb.asp?m=9207369

RE: Great Planes Sequence F3A
For our maiden flight testing, the weather was sunny but it was a cool 51 degrees F outside with winds blowing from 10mph to 20mph. Not great conditions for test flying or trimming but the Sequence flew well with plenty of power. Team JR's, Devin McGrath, put the Sequence through a series of maneuvers to test its agility and power. Flight times were about 10 minutes. Since my canopy seemed to fit as designed, I used no tape to hold it down. On the first flight, we used the recommended CG and the battery pack was positioned as previously shown. After a few minutes, we moved the pack aft about 1/2" but I am not sure how much this changed the CG. Overall, we were quite pleased with the performance of the Sequence. I knew that it wouldn't be long before the snow arrives in upstate NY so I was happy to have an opportunity to test fly it before Winter. The one modification I plan to incorporate on my Sequence is to add a carbon fiber blade between the two piece gear mains per Rusty's photo. My Sequence will see many more flights next season. Although I do not compete, I love to fly aerobatics and plan to use the Sequence to increase my own piloting skills using this excellent flying model. [link=http://www.gregcovey.com/reviews/SequenceTesting.wmv]Devin McGrath Test Flying my stock G.P. Sequence F3A[/link] (32meg)
Posted on: 10/27/2009 5:38 PM by Author "Greg Covey" in the forum "Electric Pattern Aircraft"
http://www.rcuniverse.com/forum/fb.asp?m=9206941

RE: Parkzone NEW Messerschmitt Bf-109G PNP and BNF
Freddy, I agree with Casey. It is difficult to tell what your issue is from the photo. Pick the plane up and look at it from the front to see the alignment between the wing and tail. If it is aligned, then your gear mains are likely bent a little different. If it is not aligned, check the seating of the wing to make sure that you didn't get a servo lead stuck in one side. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - I have been pretty impressed with my Bf-109. It looks and flies great! Even the 5-color pilot can be seen in the air! I prefer to fly it without gear and belly land it in grass (or snow). A light hand toss is all it takes to get flying. It looks much more scale in the air and floats in nicely without power. I don't see a need for flaps on this model since it can be flown in a school yard. I agree with Casey about those gear main covers possibly affecting flight. They look nice on the ground but I wouldn't fly with them on. Fortunately, they snap on and off in a jiffy. [i]flying photos by "Papa Jeff" Ring[/i]
Posted on: 10/25/2009 4:38 PM by Author "Greg Covey" in the forum "Park Flyers & Backyard Flyers"
http://www.rcuniverse.com/forum/fb.asp?m=9185925

RE: Parkzone NEW Messerschmitt Bf-109G PNP and BNF
We did some more test flying on the Bf-109 today with and without the gear mains. They seemed to work fine on grass. The gear look good on the ground and take-offs but I prefer to hand-toss the plane and fly it without gear. I'll post a video later this week... [i]flying photos by "Papa Jeff" Ring[/i]
Posted on: 10/25/2009 4:37 PM by Author "Greg Covey" in the forum "Park Flyers & Backyard Flyers"
http://www.rcuniverse.com/forum/fb.asp?m=9201091

RE: Parkzone Habu
I agree with Gary in that it should be similar to a hopped up Twister. I should be getting one to review so we'll see how easy it is to hand toss and land on grass (or snow by then) without any wheels. Horizon had one at iHobby last week.
Posted on: 10/24/2009 3:37 PM by Author "Greg Covey" in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9198766

RE: EDF Predator UCAV from Nitro Planes
Mark, Sorry to hear about your allergy to epoxy. I would imagine that working with fiberglass isn't all that healthy either. Take care. MJ, You are correct. I used #10 Castle Creations silver wire but #12 would work fine in this application as well. The ESC wires were also #10 gauge. You can use 4mm bullet connectors because they are rated to 120 amps. I used the stock 4mm connectors on the ESC to motor connections and 6mm bullets (rated to 200 amps) on my Y-harness to connect the two packs in series. Again, you can safely use 4mm bullets here too. Good luck!
Posted on: 10/24/2009 3:29 PM by Author "Greg Covey" in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9198748

RE: Parkzone NEW Messerschmitt Bf-109G PNP and BNF
Lemon, I'm not sure what an MX2 plane is, but if you can fly 3D, you can fly the Bf-109. DP, I did not encounter any tendency for the Bf-109 to snap. It simply lowered its nose. That being said, my battery pack was all the way forward in the tray depression. Next time out, I will experiment with moving it back and see what happens. It looks like you can move the pack about 1/2" to fine tune the CG. Good luck!
Posted on: 10/20/2009 5:00 PM by Author "Greg Covey" in the forum "Park Flyers & Backyard Flyers"
http://www.rcuniverse.com/forum/fb.asp?m=9188796

RE: Hangar 9 F4U Corsair
Hi Scott, I measured a 7" diameter for the H9 Corsair cowl. Regards.
Posted on: 10/13/2009 4:32 PM by Author "Greg Covey" in the forum "Glow to Electric Conversions"
http://www.rcuniverse.com/forum/fb.asp?m=9170327

RE: EDF Help
Correct.
Posted on: 10/12/2009 4:04 PM by Author "Greg Covey" in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9167170

RE: EDF Help
If you look at the Test Flying section of my [link=http://www.rcuniverse.com/magazine/article_display.cfm?article_id=1031]E-flite F-15 Eagle[/link] review, you will see one way to balance rotors. Using a good balancer like the Dubro Tru-Spin Prop Balancer, you simply sand the blade tips until the rotor no longer favors the blade. You can also dab a small amount of clear nail polish (or spray paint) on the opposite side to add some weight. Good luck!
Posted on: 10/12/2009 12:14 PM by Author "Greg Covey" in the forum "Electric RC Jets"
http://www.rcuniverse.com/forum/fb.asp?m=9166593