RE: New Race Planes
These look great! Are they all composite? Retractable landing gear? Price? Expected delivery???
Posted on: 3/31/2011 11:04 AM by Author "z06kal" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=10434785

RE: Sepulveda Basin
So where are the pics? 2nd day of promised pics and nothing....
Posted on: 3/25/2011 3:57 PM by Author "z06kal" in the forum "The Clubhouse"
http://www.rcuniverse.com/forum/fb.asp?m=10422620

RE: Sepulveda Basin
Anybody got pics of the field condition?
Posted on: 3/24/2011 1:08 PM by Author "z06kal" in the forum "The Clubhouse"
http://www.rcuniverse.com/forum/fb.asp?m=10420166

RE: Little Toni w/ OS 95AX
I used a 13x13 APC Pattern prop on my Great Planes Minnow which is an almost identical plane. I used electric power and it ran about 11,000RPM or so. I don't know what kind of revs a OS 95AX would turn with that much pitch however. If it is too much load the motor will never get up on the pipe and reach max output. http://www.youtube.com/watch?v=Y1ibJLdbFBw
Posted on: 3/1/2011 10:27 AM by Author "z06kal" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=10372158

RE: FYI I have a Lil Toni NIB For sale for you speed freaks.
Finney no I don't it's NIB. I can take pics of the wrapped up parts in the box if someone wants. http://www.greatplanes.com/airplanes/gpma1320.html
Posted on: 12/1/2010 9:29 PM by Author "z06kal" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=10170863

FYI I have a Lil Toni NIB For sale for you speed freaks.
FYI guys selling a Little Toni NIB. I know that's a plane others have talked about here. I'm selling it for $180 shipped OBO. PM me if interested.
Posted on: 12/1/2010 6:53 PM by Author "z06kal" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=10170570

RE: 137 MPH Scrath built Bi-Motor Racer
Cool setup!
Posted on: 9/16/2010 12:31 PM by Author "z06kal" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=10006626

RE: What is an honest
That Cheetah will not go fast. Very limited in room in the fuselage for big batteries and the layup is hardly strong. That Sunracer wing will be suspect much past 150mph too. Boomerang I can't comment about but a 30" plane will be very hard to fly at 200mph and you'll have to run a super high C battery due to limited battery room. 200mph seems very unlikely from that ducted fan motor even in a Q40. All the glow planes mentioned will not see close to 200mph with that motor.
Posted on: 8/31/2010 4:17 PM by Author "z06kal" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=9970923

RE: Doubting the speeds posted
Your friend needs to go watch a Q40 race if he doubts piston powered airplanes can go 175+. BTW guys were going over 200 back in the 80's and 90's with glow powered ducted fans.
Posted on: 6/7/2010 9:33 AM by Author "z06kal" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=9786857

RE: Is wet power a dead end?
I'm not so sure about those comments high plains. First of all a even a rear exaust jet fire .90 or 1.00 on a tuned pipe will only spin a 12x8 at 15,000rpm. That's only a 114mph pitch speed. I'm spinning a 13x13 at 11,000rpm. The jet fire would be too heavily loaded with a 12x12 to get to its max power rpm with its porting and piping. It would need to spin something like a 10x10 to get a good pitch speed, but in-flight thrust would be too low with such a small prop arc to to push such a big draggy model up to its theoretical pitch speed. We should also not forget that a jet fire .90-1.00 is $450+ vs my more powerful electric setup is $200 cheaper. No small motor that can do 10kw? A medium sized NEU BAM 22 series should do 10kw in burst. That's only a 30oz motor. The really big NEU BAM can probably handle more like 13KW+ in burst (Rated at 10kw but NEU stuff is always under rated) and it only weighs 48oz. Keep in mind a YS 110 with muffler is around 30oz. I think 18hp out of a 48oz motor is pretty good. Keep in mind the BVM FAN uses only a 1521 or 1527 neu. Those are only a 17 to 22oz motor and are only rated to 4.5kw burst but BVM pushes them to like 6kw in jets.
Posted on: 3/23/2010 10:15 AM by Author "z06kal" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=9604810

RE: Is wet power a dead end?
Hey guys I took some video of the minnow on Radar. I was a little pessimistic in my performance. [youtube]http://www.youtube.com/watch?v=Y1ibJLdbFBw[/youtube] This is my $250 electric power system. I don't think a YS110 on even 40% fuel would push it this fast. It's doing solid mid 130's and this is a BIG BIG plane it is MUCH bigger and draggier than a .40 size mustang. Also please note the sound. IMHO hearing just the prop sounds much more scale than a chain saw flying through the air. I was listening to youtube videos of similar class full scale planes racing in Reno and they sound quite similar so the electric setup is sounding more scale than the glow setup. What do yall think?
Posted on: 3/20/2010 3:16 PM by Author "z06kal" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=9596283

RE: Is wet power a dead end?
Hahah funny post Combat! I just like whatever delivers the best performance and bang for the buck. If it has convenience that is a big plus. The high powered electric stuff that spins smaller props is also super loud because the prop goes supersonic so it's not necessarily always quiet. BTW if you want to check out a cool electric full scale plane check out the Yuneec E430. It is a lot more advanced than the Sonex. It's just real efficient so you get like 2 hours flight time with some throttle management. I know it's not great but it gets more complicated when you are looking for endurance AND have to carry cargo and people. The one thing that has a lot of potential about electric civilian planes is it has the potential to really bring the cost of private aviation way down. No more $20,000 engine rebuilds every 2000 hours. No more $5 FAA approved leaded gas. Also you have the same power at sea level as you do at 20,000 feet so you can still climb strong and fast at high altitudes. No need for turbo/super charging. If you can sustain 1000fpm climb all the way from sea level to say 22,000 feet you can start getting the efficiency of thin air on drag and fly above the weather as well. This generation airplane won't do it but foreseeable generations will.
Posted on: 3/18/2010 6:13 PM by Author "z06kal" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=9593313

RE: Is wet power a dead end?
I grew up flying glow. I don't miss the mess to clean up after the oil gets in every nook of the plane. I don't miss oil pouring out the muffler and onto my interior/shoes whatever. I don't miss dealing with starting issues and dead stick issues or blown glow plugs. I don't miss figuring out and diagnosing flooding, tank, fuel delivery issues etc. I don't miss random dead sticks. You guys like the sound? That's all on you. 2 cycle glow engines remind me of my gardener waking me up doing yard work in the morning. Is that the sound of performance a buzzy 2 stroke leaf blower? Some of the 4-cycle stuff on war-birds etc sounds decent and I can respect people who prefer that. I think electric is now cheaper than equiv performance glow. Even on big birds. I fly my 28% Extra on two 5S 5000mah packs that are $44 each. I use a $100 HV100 controller. I use a $160 Hyperion out runner. I fly 8 minutes no problem and have awesome super fast and linear throttle response that blows away gas/glow. I can unpack and fly in minutes. That is over a 3kw power setup. Even a Chinese DL-50 is $330. But granted I can't fly for 30min on a tank like you can with gas. On my Great Planes Minnow 90 size plane I run a $42 Hobbycity 63-64 280kv out-runner. I use a $100 12S 5000mah pack setup. I use a $100 HV100 controller. My power system is $242. It turns a APC Pattern 13x13 prop at nearly 11,000rpm and produces 2500 watts (3.5 horsepower). The plane does 125mph level on the Prospeed CR1K. To get similar performance you need a YS110 on what 30% fuel? How much is a YS110 again? How much is a gallon of 30%? I also think the plane sounds much more scale because all you hear is lots of prop noise. It actually sounds a lot like a full scale plane going by. For a solid 200mph airplane you can pickup a F5D for $350-400. Get a ARC 28/58/1 for $90 get a Castle ICE 100 for $120. and a 5S 3200 pack for $40. That is a $250 power system that will spin a 5x5 prop at over 200mph. The entire plane with radio can be done for around $750-800. I don't know of a cheaper way to go 200mph short of a Carbon Destiny 54" Glider Dynamic Soaring. Some say hobby IC is not maxed out. I say it is. To go further than it is now will require power adders like electronic fuel control, forced induction etc. All things that will make IC more expensive not less. Making the engines stronger without increasing the cost by a large margin seems unreasonable given the required quality of materials and machine work. Until electric systems can produce 20hp in a 5 pound package and fly for 5-6 minutes turbines will be here to stay. Turbines will be around a long time because power/weight/performance can't be beaten by anything else. Electrics are already beating IC piston engines on that and in some cases rather badly. All things said you still don't have the run time with electric. Hard to beat the power density of fuel. With electrics you always have to sacrifice the run time. But that will be changing in the near future...
Posted on: 3/18/2010 2:46 PM by Author "z06kal" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=9592829

RE: kyosho Kelly F-1
SpeedBoy were the retracts difficult to do? DId you use the existing gear mounting points and just open up the wing for the wheel? What did you use to fill the wheel well? Any pictures during the build?
Posted on: 3/1/2010 7:27 PM by Author "z06kal" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=9546693

RE: Sundowner 50 Arf
Yeah 10,000 sounds reasonable to me. 14x14 @ 10,000rpm is about 132mph pitch speed. The airplane in the video didn't look like it was doing 138 to me but you can never tell on video. If he is able to get 10,000rpm out of it with a 14x14 I don't see why it wouldn't be in the 130's.
Posted on: 3/1/2010 6:22 PM by Author "z06kal" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=9546516

RE: kyosho Kelly F-1
Any close up pics of the retract mod? Pretty cool!
Posted on: 2/25/2010 3:23 AM by Author "z06kal" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=9533896

RE: Super Falcon 120
I had the bobcat 50 which is the smaller cousin. IF you want a decently fast airplane go for the smaller Bobcat 50 vs the 120. I had mine electric and ran a 12x12 prop. It turned about 11,500 on a 12x12 APEC E static. That's about the same as a YS 110 on 25% fuel. It did about 122ish on radar straght and level. Didn't seem to go much more than 10mph faster in a dive. The plane is pretty draggy. I had retracts in mine too. Here is a video: http://www.youtube.com/watch?v=NWyyz6DPrKk The big problem you have if you're not electric is finding a high pitch pusher prop. Not too many flavors available in pusher config. With the electric motor I just spin it backwards and ran a regular prop.
Posted on: 2/4/2010 1:13 PM by Author "z06kal" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=9476040

RE: Looking for small F3D style electric
I think you're thinking F5D. Now a days a mild F5D setup is ~150mph and a hot one does well over 200. SoaringUSA is one of the best sources for F5D airframes.
Posted on: 1/20/2010 7:23 PM by Author "z06kal" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=9433369

RE: Nelson Q40 too much for LR-1 Speed Cat?
This looks exactly like the Wildhare LR1. Beware the wing is very weak.
Posted on: 10/9/2009 10:20 PM by Author "z06kal" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=9160676

RE: 140+ mph H9 Sundowner 50 Arf
[quote]ORIGINAL: r-c-guy I have one with an eflite 60 outrunner, 13x13 apc, and 8 cells which was radar times at 139 upwind. No other mods.... [/quote] 139? No way. Not on a 400kv motor on 8S not enough watts to push a 13x13 to 140mph pitch speed. At best it is about 118mph pitch speed with a few percent slip after that maybe 115mph level. I run the APC pattern 13x13 (which is now a discontinued pattern prop and the only 13x13 APC) on 12 cells on a 300kv motor and it is barely in the 130's pitch speed speed wise. It tachs 11,100 which is mid 130's pitch speed. I pull 70 amps at 12S voltage and about 2500 watts. This pushes my minnow to about 122mph level on the prospeed CR1K radar gun.
Posted on: 9/16/2009 5:21 PM by Author "z06kal" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=9101156

RE: 50,000 rpm and then poof
What's the wingspan and wing area of your wing?
Posted on: 9/8/2009 6:14 PM by Author "z06kal" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=9079577

RE: 50,000 rpm and then poof
A 4.1 x 4.1 is too small for your wing. You are not getting nearly enough thrust to even approach pitch speed. Your wattage would be much better spent on a bigger prop. I'd say something like a 5x5 or the sizes between 5x5 and 6x6. Just FYI, we use a 5x5 prop on a much much slicker f5D airframe at 1400 watts to crack 200mph and even that is still behind pitch speed. Oh yeah and your 4S 4000 pack will not run a house with the a/c. A typical 4 ton a/c uses about 5kw when powerd up. Pulls like 25-30 amps at 220v a/c. That is JUST THE AC. a typical house will use like 3-4kw when all powered up (not including ac). Even if your pack could burst 60c or 240 amps (for just a few seconds with heavy voltage sag) that is only about 3kw. So I suppose not including a/c you could stretch it if you were pulling 60c from the pack (full charge to full discharge in 1 minute).
Posted on: 9/7/2009 7:09 PM by Author "z06kal" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=9076931

RE: Sepulveda Basin
I had people telling me this belongs in the park flier section?????? [sm=75_75.gif] http://www.youtube.com/watch?v=3b32TrOxF6Q Lot of ignorant people out there. Granted this happend back in 06 when larger/fast electrics wern't as well known. Flying my 45" extra 300 which is right on the limit of the parkflyer specs I found itl rather easy to encroach the flight line or fly into the landing approach area if not paying careful attention, and I've been flying for some 17 years. For most pilots you would be surprised how much further out you are than you think you are and for novice pilots they litteraly have no clue. I'm not sure what the solution is but I would say 60mph is too fast for the park flyer area as it's just a couple of seconds before you are over the pilot boxes. I'd say the park flier area is only appropriate for 3D style aircraft that fly rather slow and can turn on a dime. I see a lot of guys flying better and better foamy EDF's or pushers out there and I'd argue that these planes belong on the main runyway.
Posted on: 7/29/2009 1:30 PM by Author "z06kal" in the forum "The Clubhouse"
http://www.rcuniverse.com/forum/fb.asp?m=8973837

RE: Sepulveda Basin
Ron gave me a few flying lessons on my trainer back around 1993 when I was learning to fly. I was in junior high at that time. I remember he was the most impressive flyer I had ever seen back then. He was flying a 40 size extra and had a very exciting flying style and was an inspiration. Always had a lot of energy and full of life. I remember he used to bring a sport bike to the basin back then. Very sad news. My condolences to his family.
Posted on: 7/25/2009 12:38 PM by Author "z06kal" in the forum "The Clubhouse"
http://www.rcuniverse.com/forum/fb.asp?m=8962736

RE: nitro planes SU-26 50CC specs
Here she is at a husky 20.5 pounds AUW. All ready to fly.
Posted on: 7/15/2009 10:39 AM by Author "z06kal" in the forum "NitroModels Support"
http://www.rcuniverse.com/forum/fb.asp?m=8935280

RE: nitro planes SU-26 50CC specs
SGOEN where do you have the CG set at? What is your all up weight? What size prop you swinging and any rpm readings?
Posted on: 7/9/2009 4:33 AM by Author "z06kal" in the forum "NitroModels Support"
http://www.rcuniverse.com/forum/fb.asp?m=8918313

RE: nitro planes SU-26 50CC specs
Bobzilla you still lurking? How's your su-26 doing still got it?
Posted on: 7/3/2009 12:21 PM by Author "z06kal" in the forum "NitroModels Support"
http://www.rcuniverse.com/forum/fb.asp?m=8903576

RE: nitro planes SU-26 50CC specs
More pics..
Posted on: 6/26/2009 2:51 PM by Author "z06kal" in the forum "NitroModels Support"
http://www.rcuniverse.com/forum/fb.asp?m=8883250

RE: nitro planes SU-26 50CC specs
Moving along.. Due to the heavy loads that will be imposed on the firewall and motor box with all that weight up front I went ahead and reinforced the firewall and the whole motorbox with carbon fiber. I then cut out a hatch from the cowl, hinged it using CA hinges and boxed it in with ply. Mounted up the motor and made the battery tray. With a 2 pound motor and 3.3 pounds of lipos in the nose the plane still seems like it will be tail heavy...go figure.... May end up having to put lead in the nose (I SURE HOPE NOT!!).
Posted on: 6/26/2009 2:49 PM by Author "z06kal" in the forum "NitroModels Support"
http://www.rcuniverse.com/forum/fb.asp?m=8883248

RE: Revolver + Saito 115
Raptor look at the Engine RPM at each speed and do the math the bigger pitch might be bogging the motor to much so it never gets into the power band. Come on out to the sepulveda basin next month we have some good events coming up a warbird race and a jet rally. I'll bring the gun out and we can clock any planes you bring and get some real world numbers and comparisons. BTW like I've said I've only clock a few hundred planes and not a one has flown faster than pitch speed predicted... sooo I dunno what to say.
Posted on: 6/23/2009 6:31 PM by Author "z06kal" in the forum "Extreme Speed Prop Planes"
http://www.rcuniverse.com/forum/fb.asp?m=8875033