Sid, What mixture meter are you using? Thanks Chris Gardiner Sent from my iPad
> On May 30, 2014, at 12:53 PM, smwood via KRnet <krnet at list.krnet.org> > wrote: > > My Zenith on the 2180 VW does go rich to lean from idle to WOT. I have a > Mixture Meter that shows this in real-time and can dial in the mixture from > the cockpit as needed. The knob in the cockpit is connected to the needle > valve on the carb by a VW speedometer cable. As far as I can determine, the > Zenith I am using has only two jets: an idle jet with a screw adjustment and > a run jet with a screw adjustment. The run jet is the one that I am > adjusting from the cockpit mixture control knob. This set up works fine for > me. I figure: It ain't broke, so I don't need to fix it. In my company of > one, I am putting the design engineer on furlough and turning the flight > testing over to the test pilot and flight test engineer. > > Sid Wood > smwood at md.metrocast.net > Tri-gear KR-2 N6242 > Mechanicsville, MD, USA > ------------------------------------------------------------------ > >> Sid, does your engine go very rich at mid to low throttle settings? >> Mine with the Zenith carb was good at idle and full throttle, but went >> very rich to the point of fouling plugs at mid range. I didn't know >> what was going on until I installed the mixture meter then I could >> compensate for it. Spoke to an engineer at Zenith and he told me that >> the part number for that carb was the generic one not tuned for a >> particular engine and there was a jet in it that should be a little >> bigger to even out the mixture across the whole throttle band. >> >> Brian Kraut >> >> -------- Original Message -------- >> > >> Made the first ground engine run after: the engine re-location (to >> adjust >> CG), installing new RevMaster oil cooler, oil pump (to control high oil >> temps), moving the fuel pump (to fix vapor lock) and adjusting the >> Zenith >> carb. After an eight-month stand-down the 2180 VW fired off on the >> fourth >> blade; runs smooth and strong. After a little warm up idle can be set at >> >> 600 RPM, but shakes a lot. 700 RPM is much smoother. OAT was 57 F & RH >> about 95%. Carb was making ice at 28 F. Carb heat works well. Cabin heat >> >> off the oil cooler works good. Mixture Meter works good. Have 6.9 hours >> TT >> on the engine. >> And no leaks!!! >> Need to finish the cowl, do another W & B, sign off the condition >> inspection >> and get on with Phase I flight testing. >> >> Sid Wood > > > _______________________________________________ > 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
