I agree the TBI type sounds the best. But the Ellison is $1000+ and the Rotec is not much less at about $800. The "guillotine" style carbs like the Posa and posa types.... well, not sure I won't to go there. might be ok to begin with. But if you talk to Revmaster or Aerocarb folks, you can't get anything better. If you go lurking in the forums, you hear the real story. Even Rotec has some issues. I'm just not happy with the prospects at this point. On Nov 23, 2012 9:04 PM, "Jeff York" <jeffyor...@yahoo.com> wrote:
> The comments/experience by Sid is exactly why I decided to Lean my Zenith > alone. I had researched the use of a speedometer cable and such to have an > in flight adjustable mixture but, I felt the mixture was way to sensitive > and I would end up with a over rich or over lean condition at just the > wrong time. Engine sputtering to dead or ring or valve issues. Oh, and > leaking gas. > > I did not investigate the solution that Brian suggested and I will > investigate it now. Over all, I have been very happy with the carb. > Obviously I think a throttle body injection would be better at exact fuel > air mixture and I think I seen someone mention a Mukini or something and > that would be worth looking into. > > Jeff York > Georgetown Scott County Airport > KR2 > 2010 National Gathering Peoples Choice, Best Interior > 2011 AirFest Best Experimental, Best Instrument, Best > Interior > > > ________________________________ > From: Phillip Hill <phill.h...@gmail.com> > To: KRnet <kr...@mylist.net> > Sent: Friday, November 23, 2012 8:44 PM > Subject: Re: KR> Re: Carbs for VW based engines > > Disappointing. > On Nov 23, 2012 7:40 PM, "smwood" <smw...@md.metrocast.net> wrote: > > > I have a Zenith carb on my GPASC 2180 VW. I rigged a mixture control > using > > a VW speedometer cable. The mixture needle has too much friction from > the > > sealing gasket. The speedometer cable will wind up a full turn or more > > before enough torque is applied to turn the needle. I will need both > hands > > to do a mixture change. If I loosen the gland nut enough to smooth out > the > > turning action, then fuel will leak around the needle shaft and drip on > the > > cowl and exhaust pipe. Until I can find a better control arrangement, I > > have set the mixture to what seems about right, tightened the needle > gland > > nut and don't attempt further mixture changes while the engine is > running. > > Far from satisfactory since I have three systems for showing mixture > > operation: 4 cylinder head temperature sensors, 4 EGT sensors and a > digital > > 14point7 Mixture Meter, and still cannot change the mixture setting in > > flight. > > Choke operation for starting and smoothing out running for warm up works > > great. > > Incidentally, the Great Plains carb model numbers are not the Zenith carb > > model numbers. The Great Plains carb model numbers correspond to the > > approximate displacement of the VW engines. > > > > Sid Wood > > Tri-gear KR-2 N6242 > > Mechanicsville, MD, USA > > > > > >> > > > >> Does anyone have any experience with the Zenith carbs for VW based > > > >> engines? > > > >> Anyone currently running a Zenith? Pros and Cons. > > > >> > > > >> > > ------------------------------ > > > > > > > > > > _______________________________________ > > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > > To UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > > please see other KRnet info at http://www.krnet.org/info.html > > > _______________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html > _______________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to krnet-le...@mylist.net > please see other KRnet info at http://www.krnet.org/info.html >
