[NSRCA-discussion] YS 140L throttle "problem"

Thu Aug 10 13:28:21 AKDT 2006

Terry,

I had a similar problem with one of my 1.40Ls and it turned out to be the
bolts that hold the carb body to the crankcase were not evenly tightened and
the throttle barrel would bind. I thought I was going to need a new carb
body until I took it off the plane and the bind went away. 

Might be worth checking while your poking around..

-----Original Message-----
From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Adrien L
Terrenoire
Sent: Wednesday, August 09, 2006 10:22 PM
To: nsrca-discussion at lists.nsrca.org
Subject: Re: [NSRCA-discussion] YS 140L throttle "problem"

I just installed a new 140 in my Synergy. Had 90 flights on the original and
sent it in for new ring, and rear bearing.

I ran one tank of PM 25% thru the engine on the ground, cycling between lean
and rich.

Then I put it in the air, still a little rich. I had forgotten how much
power this engine produces. Noticed it while trying to taxi. the slightest
movement of the throttle stick had a great response at the engine. I could
not taxi without "pulsing" the engine.

It flew fine, but after landing, the engine would not shut down. It just
kept clicking over shaking the plane horribly. A quick bump of the spinner
with my hand stopped the determined engine. When I got home I adjusted the
throttle expo to flatten the curve on the low end.

Tonight I put on the 2nd flight. Neither problem was solved. I still had to
pulse the throttle to taxi, and it would not shut down.

I use the 3 position switch on the Futaba TX to go to low idle, and cut off.
Always worked in the past.

I am thinking that there is something wrong with the carb, and may try
putting the carb from the original engine on the new one.

Anyone have any other ideas??

Terry T.

On Wed, 9 Aug 2006 08:29:47 -0500 "White, Chris" <chris at ssd.fsi.com> writes:

Oh, the good ole days...

Back when I was about 12  (1971) my dad traded our Honda 90 for an EK
Logictrol (Log 2)..it had humongous servos, plugs and a shorting plug for a
switch.  

Memories...

We learned to fly on the old Styrofoam Canyon Schwiezer 1-26 sailplane on
Hi-Start ($29 from Tower I think).   First flights yielded 1 traffic pattern
from a 300 ft launch..I remember something like 30-40 second flights.(IT WAS
VERY HEAVY)  Then I'm back chasing the hi-start parachute. (Yep, I earned my
flight time!!!!)   Dad then extended the round trailing edges that came out
of the mold by using balsa trailing edge material and we picked up a few
more seconds per flight..then sandpaper and elmer's white glue to smooth the
wing surface..a few more seconds.  I think we finally got it to about 1:50
avg flight per tow.  In contrast a couple of years later we bought one of
the new EK Champions with the little bitty servos..built a Windfree and got
at the very minimum 5 minute flights from the hi-start in dead air.

Why does it seem that RC was just as much fun then as it is now...(I would
never have dreamed of having more than one setup back then:-))

Chris White

  _____  

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of
jivey61 at bellsouth.net
Sent: Tuesday, August 08, 2006 10:00 PM
To: NSRCA Mailing List
Subject: Re: [NSRCA-discussion] Inadvertent Start

Anybody......remember the shorting bars we had made from a wood dowel and
plugged in to turn on the receivers in the "50s. I had one on my J3 Cub
BCR10 Babcock system. My 1st RC plane.

Jim Ivey

----- Original Message ----- 

From: Ron Lockhart <mailto:ronlock at comcast.net>  

To: NSRCA Mailing List <mailto:nsrca-discussion at lists.nsrca.org>  

Sent: Tuesday, August 08, 2006 7:55 PM

Subject: Re: [NSRCA-discussion] Inadvertent Start

Agree, a mechanical/electrical connection sort of thing would seem best.

And have it located to be easy for all to see.

Later, Ron Lockhart

----- Original Message ----- 

From: John <mailto:johnferrell at earthlink.net>  Ferrell 

To: NSRCA Mailing List <mailto:nsrca-discussion at lists.nsrca.org>  

Sent: Tuesday, August 08, 2006 4:42 PM

Subject: Re: [NSRCA-discussion] Noxville Contest??

I personally witnessed an instance of electric starting unexpectedly at the
Nats. Since I was only around Masters & FAI I believe it safe to dismiss the
problem as lack of experience.

I feel it essential to implement some kind of safety device to prevent this
from occurring. I would prefer a mechanical lockout of some sort or at least
an arming plug.

The airplane was being carried back to the pits when the failure occurred.
The handler was on top of the problem but it could have happened after the
plane was parked.

It is a disaster waiting to happen.

John Ferrell    W8CCW
"My Competition is not my enemy"
http://DixieNC.US

----- Original Message ----- 

From: J.Oddino <mailto:joddino at socal.rr.com>  

To: NSRCA Mailing List <mailto:nsrca-discussion at lists.nsrca.org>  

Sent: Tuesday, August 08, 2006 12:53 PM

Subject: Re: [NSRCA-discussion] Noxville Contest??

Another reason to go electric.

Jim O

----- Original Message ----- 

From: John <mailto:johnferrell at earthlink.net>  Ferrell 

To: NSRCA Mailing List <mailto:nsrca-discussion at lists.nsrca.org>  

Sent: Sunday, August 06, 2006 9:38 AM

Subject: Re: [NSRCA-discussion] Noxville Contest??

I have an $8000 left thumb. They installed a couple of options while they
were rebuilding. It warns of weather changes and also serves as an alarm
clock (sometimes).

I recommended that a student headed for a pro basket ball career give up RC
until the career was behind him.

John Ferrell    W8CCW
"My Competition is not my enemy"
http://DixieNC.US

----- Original Message ----- 

From: BUDDYonRC at aol.com 

To: nsrca-discussion at lists.nsrca.org 

Sent: Sunday, August 06, 2006 11:10 AM

Subject: Re: [NSRCA-discussion] Noxville Contest??

About two years ago I got my finger in one It cut the right index finger off
at the first joint. Wrapped the finger in a towel went to the hospital with
the severed finger, three month's and $6000.00 later it was almost as good
as new except it is still numb on the end. APC's show no mercy.

Buddy 

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