440 feet per second
 

Boy you sure make it sound easy :-)

The problem with these very high speeds is seeing the plane long enough to let it accelerate to its top speed before you have to turn.

I would guess that the top speed of a Bandit with a 28 pound thrust motor to be somewhere between 315 and 340 MPH. THat is level flight.

I also guess the plane would need about a mile to get to that speed. It is accelerates slower and slower as it gets near its top speed. And of course diving helps but only to a degree.

So you would need to turn it toward you about 2500 feet away and let it go 2500 feet past you. Can you see that far?

Speed Records
 

Point well taken!
I think, though, if guys can see it at 255, 300 can't be much worse. Not having done it myself, of course, it's all speculation!
Without knowing the drag of the airframe, and doing the serious(beyond me) math, we don't really know how long it would take to accelerate up to 300.
Still, my gut tells me that someone is going to do it, and soon, and with off the shelf equipment. We shall see. I also think that once that barrier is broken, the temptation to go any faster won't be very strong.

hats off to MEC
 

I've flown LAPS that averaged 255.

300 mph needs almost 40% more thrust than 255.

Our friend MEC has already gone over 300, he posted that over a year ago I think.

Speed Records
 

I did not know that! Nice one! Hats off to that guy. What did he use, equipment wise, and what problems did he have?

Speed Records
 

Just as an FYI.. Scott Manning flew a Herbranson 288cc twin powered F-4U Corsair Unlimited racer past a radar gun at 304mph in Jean, NV at the races there a couple years ago.

It can be done. It's just not easy. I saw Chris Huhn fly his P-80 powered BVM Bandit to some pretty amazing speeds in Utah a few years back and Matt has pushed his P-120 powered Bandit to some pretty high speeds as well.

Personally.. I thought the speed game was over with the proliferation of the turbines. It's just not as much of a challenge as it was with the DF's.

-Doug

Speed Records
 

speed and other important things

there are some speed related links

http://www.rcuniverse.com/gallery/sh....php?photo=434
http://www.amtjets.nl/speed_record_attemp.html
http://www.lexsoft.at/aeroclub/mso98/MSO-NREK.PDF
http://www.behotec.de/Galerie.htm


in the beginnings of our jet activity in august 1999 our hotspot with 95N turbine did max 330km/h (pitot tube). our balsa bandit with the same turbine did approx 100km/h more.
at the moment we fly this hotty with with a PJ130 limited to 117.000rpm, and it is going 360km/h. the same combo in our improved hotty, with gear doors and thinner wings, is good for over 380km/h. if you want to go much faster with a hotspot you will need double the power or even more. it is a trainer and will stay a trainer forever.
for speed records you need probably something like the bandit, AD starjet or other special designs.

these high speeds demand better flight visibility too. the planes have to be larger such demanding more powerfull engines a.s.o.

mec

Speed Records
 

The record was set by a guy in England with a 40pounds of thrust bandit. Check it out on www.amtjets.com
I am not sure if that has been broken again though.
Robert.

Speed Records
 

254.5 mp/h (407.2 kph).

Speed Records
 

"Just as an FYI.. Scott Manning flew a Herbranson 288cc twin powered F-4U Corsair Unlimited racer past a radar gun at 304mph in Jean, NV at the races there a couple years ago."


Now, THAT I do not beleive. Sorry, it's just so categorically faster than any other prop plane, it does not wash with me. No offense intended.
It reminds me of the guy who posted on RCO a couple of years ago that he did 287 with a Sig Wonder! It turned out to be KMPH not MPH. But he had himself convinced for a while that he really had done 287!
What do the giant scale racers typically do, speed-wise?

Speed Records
 

The thing is, that you have to make an upwind, and downwind pass, so it can be measured fairly. Thats why they seem 'slow'. Thats what I think anyway!
Robert

Speed Records
 

I know. A single downwind pass means nothing, of course. But that 304mph Corsair? I don't beleive it!

Speed Records
 

Matt is correct about the fact that you can't see his Bandit long enough to get it to accelerate into the 300 mph neighborhood. As he stated, every additional increase in MPH is harder and harder, due to the increasing drag force, so you claw for each additional MPH. The easy way to offset this is to install more thrust. Those English dudes had an Olympus and they did not get to 300. Not saying it can't be done, but if those guys could not "easily" do it with the Olympus, it tells me that it is tougher to do than it looks. Not saying it can't be done, just that it is deceptively simple looking. I remember watching Matt at Fla Jets this year. His Bandit was SCORCHING and by his admission, it was significantly slower than 300. I guess it would be a bit cool to be able to brag that you flew over 300, but the speeds that Matt routinely obtains are enough to make me pooh-pooh my pants!

Speed Records
 

low weight, low fuel consumption, best flying characteristics :)

mec
seen at mallorca jet meeting

whoa!
 

before I get into trouble, I only went about 220 at florida last year! Unbeknownst to me, my "friends" were standing off the runway and clocking me with a radar gun. Other guys were flying faster but I guess they do not have as many "friends" as I do...

As for a 300 mph pass on one of those giant scale racers, I would believe it, they definitely have a lot of power (probabaly much more than even our big turbines have) and to get that speed would only need around 10K rpm on there really big props, plus it was ground speed (as was MECs 300 mph pass with a bandit).

I have heard the races do average laps at 250 or 260??

A consistent ability to fly this fast requires a very big plane and a very very powerful motive source, be it turbine or propellr driven

Speed Records
 

The Giant Scale racers were over 250mph in 1995 when I flew at Madera. Bill Cunningham had a Vendetta that was on radar at 257mph that year with only an 8.8ci twin. The Corsair (roughly the same physical size) was powered with a 17.5ci Herbranson twin. The giant scale racers are the fastest aircraft out there right now.

-Doug

Speed Records
 

How many parts of a jet have to go 300 MPH in order to count as a record, I may have it. :D

Speed Records
 

I suppose that big giant scale racers make it easier to see than small sleek jets. What do youz think?

Speed Records
 

EXCELLENT, Secret Agent, excellent!

Re: whoa!
 

I don't think the bangers even come close.. It takes
~60 hp to run an Olympus compressor.

The reason the jets are not going that fast is because
they don't want too !!

Eddie Weeks

Bandit/P-120
 

Matt:

What kind of aileron and elevator throws and expo did you use on your Bandit at FJ to cover the various speed ranges?

Getting ready for the maiden on the P-120 Bandit.

Thanks---Tom

Re: Re: whoa!
 

But how much power is left to push?

I think the motor Doug is talking about is almost 300 CC and they run methanol and nitro, with over 30 inch props (dia and pitch)

Re: Bandit/P-120
 

Hi Tom,

I always used all of the elevator that I could get (about 1 1/8 up and maybe 7/8 down) with maybe 28% expo, no dual rates.

As for aileron, I think I had about 5/8 to 3/4, some expo and I did switch to high rates for rolls and such.

I was going to ask you about that plane, looks very nice, how did you do the checkerboards?

I want to start my superbandit but I promised to not open the box until I am finished with my F-4

Checkers
 

Matt:

I favor rattle-can Krylon, myself, like on my to-die-for GB Packer HotSpot and anything in Ghost Gray with Pro-Mark graphics :D

The Bandit was painted by a guy in Miami, maybe named Paul Dobbins, but I am not sure. Steve Jaworski or John Burdin should know his name. I bought the plane, already painted, from Dave Gaspari down in FL. It was framed by Craig Wilson, and Steve did some work on it as well. I finished up with the fin mod, Tommy Woods style gear mod with Kevlar and hard foam or soft balsa under the main gear for grass fields, and the engine/radio install. It's finally done.

It looks like he used a template like Friskit or See Temp, although the smooth, symmetrical curves suggest he may have done the original design on something like Corel, and then cut some paint masks. It's not quite a Larry Kramer job, but darned close.

I really envy you guys with the patience and skill to finish a F-4 or Hun. I just got my first BV kit today, a BobCat XL, so gonna give it a try.

Tom

Hi Tom
 

Yeah it looks like he used computer cut stencils , I am trying those for the first time.

As for these big scale jobs I am not sure they are my cup of tea, a lot of fun but a major investment in time and money.

I think you will like that Bobcat, I have seen a couple of them going together, and I flew one, very nice.

Speed Records
 

Put a GPS on it, my friend has clocked his stick doing 175 km/h by placing a gps that reads and records its fastest speed.