Speed Records
 

Anyone know where there would be records of the fastest R/C
stuff? Planes boats cars? Who's the fastest?

not as easy as you think
 

The problem with speed records is there is a set course demension you have to use depending on what record your trying to break. Add on top of that the countless timers you need on the course and the paperwork you have to go through in order to set up an attempt. After all this is done, speeds are averaged out after a number of runs and atleast 2 of the timers on the course have to be with in like a 1/50th of a second or so of each other to be considered accurate! This is exactly why when you look up the offical "record" for something it is actually quite slow. For example I remember the fastest rc aircraft is only recorded at like 150mph in 1984! or something close to that. The reason also being because of the size of the course is too small and trying to run a turbine through it is impossible because it actually goes TOO fast. The course is set up something like a 4 pylon course that is 800meters long and you have to fly it perfectly with no cuts at all. Now, I don't know if there might be straight line records out there somewhere but I haven't seen any.This is all something I remember reading in a rc magazine awhile back...I'll have to try and find it. As for cars I remember reading awhile back that 124mph was set by a little 1/12 onroad electric with something like 24 or 36 cells on it. I saw a video of a HPI super nitro clocked at 109mph too. Anyway that is just my 2cents..I'm sure someone else will have something else to say about this.

Mach 3
 

POST DELETED BY MODERATOR

Speed Records
 

Steve, I'm talking about speed records, and where to find the data. The moderators here, understand what the point is so "jets forum" is not all we can talk about, look at "turbine powered boat".
This is not 1950 Germany, its OK!

I'm maybe looking at an attempt at a speed record, only if its not way out of reach. The guys over the pod have had alot of problems with hulls, and speed. Its not an easy thing to do, strapping on a turbine to water foul!

Richard Newman

Speed Records
 

It's 237, I think, and it's a SAILPLANE. Maybe the FAI has a website somewhere with the data?
I know that on the AMT site, there is a guy who clocked 287 with a turbine, but I think that only a real, official, verified record really counts, in my book.

Speed Records
 

Wasnt it MEC that had a very fast one? Trying to remember...

speed...
 

I know a pilot (that will remain nameless because he's in the US :) ) that clocked his hotspot at 278MPH with a ~27lb turbine at full bore. It was done safely in a wide open area with no one around... In his words, he "lived to tell about it" and doesn't recommend anyone else try it.

Incidentally, this proves its good practice to bolt the verticals onto the hotspot fuse because there was no hint of the usual flutter when approaching those speeds, even with balsa sheeted fins.

Kelly

Speed Records
 

Just as a point of interest, I don't think breaking the 300mph barrier would be much of an accomplishment. I think if you have a clean enough airframe and enough power, it should not be such a big deal with a turbine.
x

Speed Records
 

This guy was doing a bit over 300.............



http://ourworld.compuserve.com/homep...aves/Waves.jpg

Speed Records
 

Yeah, like over double! was it 762mph or so? I cant remember, thrust ssc.

Like ET said.....

Speed Records
 

Kelly, there's nothing wrong with a guy doing 278 if he wants to. AMA can't say boo about it. They just won't cover him for insurance, that's all!
As long as he is somewhere where he cannot hit somebody, it should not be an issue for anyone. That's what dry lake beds and such are for.
If he did 278 with a draggy thing like a hotspot, you can imagine what the speed would be with the same power in a cleaner airframe like a Bandit or Razor or whatever. 300, I would guess that somebody has been there already.

Fastest RC flyer I know? Bob Parks, did over 400 with a drone, dropped from a balloon. Another glider!

Speed Records
 

Broke the speed of sound in an R/C model, wow!!!!!!!!!

Speed Records
 

EasyT'

Yup, I know there's nothing wrong with it, just wasn't sure if he wanted me to blab it all over the net with his name on it... :D

Personally, I'll probably work my way up to it and give it a try one day. We shall see.

KW

Speed Records
 

Yeah, I know what you mean. He could get a lot of flak for that from some cantankerous people.

Easy?!?
 

Have you tried to do this?? Why do you think it is easy??

278 HotSpot
 

KW:

278 MPH! Wow, that's fast for a HS. I'd like to see that. I have a P-120(27lbs installed) on my composite HS. It weights 23.5lbs dry and I carry 84oz of fuel. No gear doors. I have the JetCat speed limiter for speed monitoring and control. I have never had access to a gun.

When I turn it off and let it rip, I can hit 200MPH at 85F and 1800 ft density altitude. In the spring and fall, with close to standard conditions, it will hit 210MPH, but that's it, from a straight and level approach. Coming out of a full-power loop, reverse cuban, or split-S entered at about 600 feet, these numbers go up, but nowhere near 278. It's the old problem of increasing induced drag with the G-load on the pull out. And, if you pull really to hard, it's the old wing-waggle, accelerated stall right into the ground. A HotSpot is very resistant to dropping a tip with a 1G stall, but can get nasty with accelerated stalls.

Gear weight and gear openings without doors extract a large penalty on HS speed, especially the nose gear opening of the HS. One of the German guys at Superman 2000 told me that some of the locals over there build HS's with no gear or gear openings, launch them off dollies with an electric glider winch, kevlar and carbon fiber the wings and tail, and have hit over 300 with an Oly for the kicker.

Tad, at GWM, is bringing out his composite Blade. It's basically a HS with straight, smaller fins like the Firebird, and an enclosed, smoothly-faired engine compartment. With gear doors, that should be a rocket.

Tom

Re: 278 HotSpot
 

Is that the yellow one on the second or third page of the new RCJI?

Nice picture, but I couldn't find any info in the caption. No mention of the aircraft at all......... :confused:

Ducted Fan
 

Best in the West 97. Paul Ivie and Larry Jakacobs (Spelling ?) BVM Ultra Viper 255 M.P.H

Turbulence

found it
 

Ok I found the magazine I was remembering from. It is Model Airplane and its the DEC 2000 issue. As it states the record IS 150.1mph set in 1984. Another good reason a turbine has not set it is because its not even allowed! The rules state an engine limit of 10cc or 0.61ci. These are FAI records. Sorry I was alittle off the mark but atleast I found the magazine to back up what I wrote. Oh yes I have heard of the slope soarer doind 237 but its still not an official record. The person who wrote this article actually holds 23 world records and if you would like to write him at 2001 Norvale Rd., Silver Spring, MD 20906 he mentions that he would be glad to help with any serious speed record attempt.
I like the comment of 1950 Germany...good laugh.

correction
 

Just checked back in my email. The quoted speed was actually 268, not 278 mph. Its splitting hairs because its still pretty damn fast! :D

Not sure if the plane had main gear doors but I know it did on the nose gear. He ran the default Graupner retract setup. The speed was measured with a Pitot tube airspeed indicator.

Kelly

Speed Records
 

I would have sworn I was doing over 300mph when the rudder left my bandit on a verticle DOWN line. What would be interesting to me would be what those grasshoppers thought when they say my bandit comming at em !!!!! lol

Blade
 

Terry:

Don't have my RCJI handy, but nice shots of it on Tad's website---www.goldenwestmodels.net.

My flying buddy Dave is expecting delivery of a Blade in a few days. I'm flying one of Tad's composite HotSpots right now (you may have seen the Packer Spot at Winemac)The quality of the bird is very good. Ready for paint, right out of the box with the composite wings and fins, and fuse of course.

Tom

Speed Records
 

So Im guessing you lost it?

I have flown a model where the rudder fell off in the air before, not to brag about my plane falling apart, but wouldnt the plane fly with no rudder?

Just curious

Speed Records
 

The rudder didnt " fall off" , it fluttered then flew off. the instsnt flutter caused the vertical fin to turn then break off. The turning of the vertical fin put the plane in an instant knife-edge. This sequence took at best 1 1/2 to 2 seconds. The throtle was off also instantly,thanks to, at the time, over 8 years of flying rc and over 370 turbin flights. Yes. I lost it. Leson learned? Dont under-estimate Speed, no matter how much you love it. BVM has " do not exceed" speeds on all his jet kits. Pay attention, in my book He's The Man.......I wonder how Bob knows what these DNE's are? Ohhhh Well.....Lesons learned......Ray

Speed Records
 

Mr. Matt, no I have not tried it, it's not really my cup of tea.
Why do I say it's easy? Well, let's say it's easy compared to doing it with a prop, or doing it under FAI rules.
Props and DFs have a very finite speed limit due to the very finite limits of pitch and RPM. I have friends who have gotten over 200 with prop planes, and each MPH over 200 is a serious struggle. It's not easy. If there were a lot of engines that could turn 50k around, it would be a lot simpler.
With a turbine, there is no speed limit to the engine. It will keep accelerating, only the airframe drag is holding it back. You still have issues of flutter and structural strength to deal with, and that is serious but totally surmountable stuff, but the engine is no longer an issue.
I have seen BVM go through the traps with an Ultra Viper at 242. I totally beleive the 255 claim. Put a turbine in that same bird, make sure it will not flutter, and there is no reason why 300mph is not attainable. If someone can get a Hotspot up to 260-something, no reason why a cleaner bandit cannot break that easily. I do remember that those Dutch guys on the AMT website claimed, I think, 287...can't remember what plane it was.