I have had a throttle cable break and a mixture cable break. I have a spring on my mixture now.
Sent from my iPhone On Jun 20, 2013, at 9:11 PM, Tinyauto at aol.com wrote: > Years ago I took my Grumman TR2 to get it's annual inspection. The > carburetor was rebuilt and I flew it about an hour when the throttle arm > came > unhooked in flight. If the carburetor had been spring loaded to go to idle, > It would have been a very bad thing. However, the carburetor was spring > loaded to go to wide open. I flew back to the airport, made sure runway was > made, and mixture control to cut off. I was so thankful that day that the > carburetor was set up that way. Now I am building this Rotax 582 bird that > has two carburetors with springs set up where if I have a throttle cable > failure it will go to idle. Bad design and the thought of it makes me > cringe. I realize there are a lot of them out there flying all over the > place, > but that design is wrong for aircraft. Failure mode should be the safest > mode....wide open. > > Kevin Golden > Harrisonville, MO > Streak Shadow > > > > > In a message dated 6/20/2013 9:00:46 P.M. Central Daylight Time, > smwood at md.metrocast.net writes: > > Finally got my Zenith carb adjusted on my 2180 VW to consistently and > reliably idle at 700 RPM. I found that the torsion spring between the > butterfly shaft and the throttle arm was not strong enough to return the > shaft to the full closed position. I added another extra tension spring > from the bracket on the shaft to the throttle arm. Playing with the > mixture > control from the cockpit while the throttle is closed, I can get idle > speeds > down to 550 RPM. Don't want to be there - the engine still runs, but is > about to shake the plane to pieces. 700 RPM is much smoother and the 4 > straight Dragon Fly pipes sound great. Still have to be careful to slowly > advance the throttle out of idle or the engine will cough once and die. > Above 1000 RPM I can snatch and punch the throttle any which way and the > response is quick and positive. Yes, I used an electronic tach checker to > verify the Grand Rapids tach readout. > I am betting that landing roll outs will be much shorter now. > Now, on to fixing the high oil temps. > > Sid Wood > Tri-gear KR-2 N6242 > Mechanicsville, MD, USA > > > > > _______________________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options > > _______________________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options
