Extreme Speed Prop Planes Discuss the need for speed with fast prop planes (Screamin Demon, Diamond Dust, Shrikes or any REAL sound breakin'''' plane)

M40 and Q500 differences

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Old 12-04-2014, 08:46 AM
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djay
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Default M40 and Q500 differences

Can anyone explain in plain terms the differences between QM40 and Q500 planes.
I am looking for a fast plane to race against others in our club and would like to know which is the faster class.

Am looking at something from Matney models with a Jett 40 engine.
My Jackel is way to slow, even with a Jett 56, and they will not let me use my turbine model as they say that is cheating.

Darryl
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Old 12-04-2014, 09:32 AM
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QM 40 is really fast. 200 mph flat out.
This class should be reserved for guys who can afford to crash $2000 worth of stuff and laugh it off.
There are way more mid air collisions in model racing than I ever imagined.
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Old 12-04-2014, 01:22 PM
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the quickie 500 plane will be a good choice for you. they are around 500-600 new. easy to set up. run the Jett 56 on it. I also have 4 used Nelson QM40 short stroke engines if you want to buy one for a very good price. if do shoot me an email.

the jackal wasnt a fast plane and if di have an engine to go fast the wings would fail.

Q-40 plane is 750-800
engine is 425
servos are 50 bucks each need four
and other minor stuff for 150 bucks and good to go.
Total 1500-1600 or so. not to bad.

Last edited by airraptor; 12-04-2014 at 01:25 PM.
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Old 12-04-2014, 03:36 PM
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The Q40 planes have 400 square inches of wing, the Q500's have 500. The Q500's turn tighter and land slower.
Q40's are pretty fast. Just this weekend I was talking to a club member who did pretty damn well in F3D about 20 years ago (3rd in the WC I believe). They flew 70 second times back then. A well flown Q40 will do under 60 seconds nowadays. Close to 200 mph on the straights I reckon.
Cost is about the same. Same equipment, the Q40 airframes cost 100$ more on average.
If you aren't used to composite racing planes, get a Q500 first. These planes have very small control surface deflections. If you aren't used to that you will be surprised when it's time to land. It's like landing a glider without airbrakes: you have to be spot on, and there are no go-arounds. The Q40's come in a bit faster than a Q500.
Use JR 3421 or 3425 servos, or Futaba 9650's. Well proven servos in the high vibration environment. Use the JR Deluxe Gold switch.

Try to find a race somewhere, talk to the guys and see what the planes are like. They are no beginner planes, even when you're used to "fast planes". They fly straight as an arrow when well setup, but are very intolerant of improper setups. CG is extremely important. Take off and landing are the hard part.

Go fast and have fun!

Last edited by Rudeboy; 12-04-2014 at 03:42 PM.
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Old 12-04-2014, 08:26 PM
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Darryl, Just this week videos were posted on this site of both Q40, and 426 Quickie practice at the Old Julian Airport site. Look under Pylon Universe- RC Pylon Racing and open the General Racing Discussion section. Then open the OJA Q40 & 426 Practice thread. 426 Quickies do about 165 mph, and Q40's (event 422) almost 200 mph in level flight. Good luck, Greg
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Old 12-05-2014, 07:07 AM
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How fast do you have to go to be competitive at your club?
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Old 12-05-2014, 07:56 AM
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http://www.pylonworld.com/rc_pylon/q...-40_planes.htm

The site is out of date but most of these links seem ok.

I would think the Jett .56LX in a Q40 airframe would result in a pretty capable 175mph-ish racer. It would also haul a Q500 pretty well too - I think the choice depends on what you need to be in front. If Quickie type speeds will do the job, then Q500/.56 LX setup will get you there for less effort and money and be more user friendly.
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Old 12-06-2014, 06:42 PM
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Ninja Q500 set up with my modified Jet QII pylon motor = 185 mph + off the turn
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Last edited by scoeroo; 12-06-2014 at 07:20 PM. Reason: Forgot the + .......sorry typo
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Old 12-06-2014, 07:10 PM
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you mean 185 before the turn of pylon number one.
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