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

My new Jett .50

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Old 02-14-2003, 06:31 PM
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shawnkappner
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Default My new Jett .50

I wasn't for sure if I should, but I plunked down $275 for a Jett .50 two weeks ago. It arrived neatly wrapped in a Jett "cry towel" wrapped in bubble wrap then in the box. Very nice.

I took in for a spin on my test stand to break it in. I put a 9x7 apc prop on it (per the directions) and fired it up. I had it running slobbering rich at full throttle and looked at the tach. I was expecting a 13,000 RPM reading. Nope 16,000 Then I leaned it a 1/2 turn and let it stabilize for a few seconds but it was still sputtering rich and took another reading of 17,800 . I was scared because the directions say to break it in around 16,000 so I backed it back down to about 16,500.

After 3 tanks I leaned it out a little more but still not to peak RPM and got readings of 18,600. That is a very conservative reading as I'm sure I could have gotten more but I didn't want to push is after only three tanks of fuel.

I'm putting this in a Cermark F-20 .40 size and will be running an apc 9X8 prop. I don't think I will have any trouble running it at 17,800 to 18,000.

Bottom line is I'm VERY please with the motor and I would recommend it for anyone the is considering this engine for their plane.

Thanks Dubb Jett
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Old 02-14-2003, 06:46 PM
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Razor-RCU
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Default 18,000

Holy moly!

I was tempted to get a Jett 50 for my Patriot with proceeds from my tax return but instead ordered a Futaba 9C- Less exciting but more necessary for me--- (I did pick up an F3D MVVS-GRRT on e-bay tho-)

Congrats on joining the rank of people who I envy!

That F-20 is going to be sweet- Please post pics!

Keep us posted,
james
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Old 02-14-2003, 08:27 PM
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Cyclic Hardover
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Default My new Jett .50

Who cares about the great performance ans speed. Shoot the only reason i bought mine was for the towel and decals.
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Old 02-15-2003, 02:12 AM
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AirGar
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Default My new Jett .50

Shawn,

Thanks for the info, I've had one of these "on the bench" for about a year now. I too am going to put it in the DC F-20, and now after seeing your numbers, I may have to get off my you know what!! WOW, very impressive!

That combo should be better than my .60 F-20 with the Jett .90!

Worth every penny, eh?

Gary
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Old 02-15-2003, 03:09 AM
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S3HD
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Default My new Jett .50

Hey Shawn, when you get your plane done, we'll have to see which plane is faster, yours or mine. I bought a BSE Jett 50 FIRE for my Whiplash! It has an ABC liner, DF timing and a MACS pipe.

I've run it five times now, and am getting 18,600 on an APC 8.8 x 8.5 D-1 Pylon prop. (It is LOUD! Thankfully the HAWKS don't have a noise limit.)

(I like the towel and the decals too!)
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Old 02-15-2003, 05:53 AM
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Flyboy Dave
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Default shawnkappner....

I hope you get as much fun out of your F-20 as I do
mine. Put dual rates on the ailerons .
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Old 02-15-2003, 09:22 PM
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shawnkappner
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Default S3HD

Hey S3HD - Who are you??? I don't remember seeing a whiplash at the field.

You are right about that being lould. I'm not use to speed planes or jets and after running that motor in my driveway, the first thing I did was buy some good ear plugs. My ears are still ringing!

I will post some pictures in about a month when I get it put together. I had Dennis Kirby from Kriby's Kustom Graphics do some graphic work on it today. It is comming along pretty good.

Keep em fast and low!

Shawn
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