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- Path: sparky!uunet!think.com!hsdndev!kronos!ed
- From: ed@kronos.com (Ed Baker)
- Newsgroups: rec.models.rc
- Subject: K&B Help Wanted! (Was Re: Radio Selection)
- Message-ID: <1992Nov17.064137.32454@kronos.com>
- Date: 17 Nov 92 06:41:37 GMT
- References: <10887@disc.dla.mil> <1992Nov13.230049.26052@aio.jsc.nasa.gov> <10328@tetons.idaho.amdahl.com>
- Distribution: usa
- Organization: Kronos Inc. / Waltham, MA
- Lines: 58
- Disclaimer: This posting is a personal opinion and not that of Kronos Inc.
-
- In article <10328@tetons.idaho.amdahl.com> rbs@sawtooth.idaho.amdahl.com (Bob Smith) writes:
- >In article <1992Nov13.230049.26052@aio.jsc.nasa.gov>, colangel@norm.JSC.NASA.GOV (Michael Colangelo/MDSSC) writes:
- >>
- >> P.S. What kind of motor are you using? Personally, I like the O.S. brand - you
- >> pay a little more - but they are worth it!! I'd recommend against buying K&B
- >> motors - they suck! K&B motors always seemed to quit on me at the worst time,
- >> OS motors run like a top.
- >
- >Oh, I wouldn't say they suck! Inferior, yes, but suck??? :-) I've owned both,
- >and yes, the OS is definitely a better engine, but for about half the price you
- >can get a K&B BB engine that runs quite adequately. For comparison, my K&B .40
- >BB turns about 12,000 RPM while my OS .40 SR turns around 13K with the same
- >fuel and prop. I've had about the same amount of trouble with both of them
- >stopping in the air, and usually this is the result of not having them correctly
- >adjusted. The OS is a little more forgiving in this regard, but properly
- >adjusted the K&B runs just fine. The OS is also smoother running, but for a
- >modeler on a budget I really see nothing wrong with a K&B BB motor.
-
- I've seen the K&B threads before, but I had never encountered an actual
- K&B engine until last week at the flying field. A new student (1st time)
- showed up with a nice Royal 40-T ARF trainer plane w/ KB 40. I/We told him
- that we wouldinstruct himm.
-
- I spent most of the day having him start the engine, and taxi the plane to
- the far end of the runway. I would slowly increase the throttle, and the
- engine would die.
-
- I could not get his engine to run right; it would die on the runway every
- time. I finally adapted to the engine characteristics, and we had a great
- 1st flight! I had to overcome my insistence that the engine both idle and
- run at full speed, with a transition between the two. A couple of times I
- let the engine idle for over a minute, and then pushed the trottle up one
- clock only to have it die. I took that plane out to the far end of the
- runway at least 5 times, only to have the engine die there. Very amusing
- to my co-fliers :-).
-
- The engine was very consistent; it died every time. So, to keep it going,
- one had to keep it at very high idle. It flew just fine, then!
-
- My question is: How do I set this engine so that it both idles and
- transitions to full throttle without quitting?
-
- >(Now the Sportsters, that's a different matter!).
-
- Maybe this engine is one of these.
-
- >They're also made in the USA, for those of you so inclined.
- >
- >Bob
- >
- >--
- > -----------------------------------------------------------------------
- > Bob Smith Amdahl Corporation 143 N. 2 E., Rexburg, Idaho 83440
- > UUCP:{ames,decwrl,sun,uunet}!amdahl!tetons!rbs (208) 356-8915
- > INTERNET: rbs@idaho.amdahl.com
-
- -Ed!,AP$Z J+X
- 248
-