Jeff you know I like the SDS system one controller can do EFI and Spark the other plug can be covered by the CPI unit. I cannot find it now but there was a great Podcast on the topic of SDS VW's
http://www.sonexflight.com/58/Peter_VanSchalkwyk_SDS_EFI_Talk.pdf http://www.sdsefi.com/vw.htm On Wed, Nov 16, 2022 at 11:22 AM Jeff York via KRnet <krnet@list.krnet.org> wrote: > Larry, Valid question and valid thoughts in my mind. For whatever reason I > did it, I also lowered the cowling in the front of my KR. It slimmed the > front profile. I am now wondering how that helps or hurts cooling. But, I > can say it pretty much negates the ability to put a compufire ignition on > because the bulge would look like I glassed a coffee can to the top of the > cowling. It's interesting how a person, me in this case can do something > and then later ask myself why I did that ? How do I say this? I am not > trying to just make more power as much as I am trying to make sure it > produces the power it should ro the power it needs and do it safely and > efficiently? I have always hated my Zenith carb. I have always questioned > the effect of low voltage spark on a magneto and how that affects power. I > know in a water cooled big bore stroker motor I built in another > application going to a high energy ignition made a major difference. So, I > have decided to revisit a lot of things because after all, it's called > experimental for a reason. > If a person put a 2180 on an actual dyno as built, will it actually > produce 70 or 76 HP as claimed? Also, just because you have the power it > doesn't mean you use all of it all the time. My overzealous ideas sparked a > build of what became a 600 hp stroker motor in my 12,000 lb vintage > Airstream motorhome restoration. Do I use all that hp and torque ? NO. My > gearing and the fact that after about 65 mph I simply don't feel > comfortable going any further. But, the resulting increase in efficiency > and regearing allows the motor to actually run cooler and get better > fuel mileage then it did with less than half the HP it came with. Now it > may actually be more related to the better ignition, better cam and many > other factors but, I think the engine doesn't labor as hard as it used to > when it had less power. Oh, I also added a wide band O2 sensor and a > digital AF sensor and tuned it to a 12 to 14 to 1 AF to insure I was > running the correct AF not only at idle as most carbs can only be set to, I > have tuning rods in the qjet that allows tuning AF at typical cruising rpm. > Of course we have that in aero carbs but not so much on a Zenith. Maybe > some do it but I dont feel safe leaving the mixture lock on a Zenith. I > have a zenith on my Onan generator and after lots of frustration and > rebuilding I got sick of it. So, that lesson makes me uncomfortable leaving > it on my KR. Also pulling the heads off and seeing them affirmed that I > will not fly behind a Zenith again. Not when there are far better and safer > options. > I will also add a wideband O2 and digital AF guage sensor to my 2180 and > use that in conjunction with lean of peak settings to ensure I am getting > the best power and ensuring longer life in the 2180. Because like my 496 > engine build, I think there are a lot of things like SDS CPI and even the > next step of SDS EMI That can now be added to a 2180 or a Corvair as well > as your 0-200 continental to bolt on far better fuel systems, > ignitions systems and add not just better power but more reliable power at > altitude and temperatures as well as safety. A lot of what I am doing is > thinking and reaching out to you all who have stayed very active in order > to learn again and learn more as well as raise the discussion. Because some > of my thoughts may be pretty dumb or not applicable. But, maybe there are > some out there in the KR community unaware of these available newer > technologies that are now affordable to us just like how autopilot , EFIS, > glass cockpits and other things were not really affordable in the past or > even available. > There are a lot of people on here a lot smarter than me and more > experienced. But there are also some like me. We can learn from those of > you that know. I am always the student of the professors. > > Jeff > > Jeff > > On Wed, Nov 16, 2022 at 8:47 AM Flesner via KRnet <krnet@list.krnet.org> > wrote: > >> On 11/15/2022 9:57 PM, Jeff York via KRnet wrote: >> > Looks like a high current bridge rectifier >> > >> > Jeff >> >> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >> >> These are used in golf cart chargers (not sure which part number) and >> they do fail at times. One question on all this extra power you hope to >> produce. Will you have enough cooling to handle it? Extra power = extra >> heat. Seems like most VW installations have cooling issues. Just >> wondering................... >> >> Larry Flesner >> >> -- >> KRnet mailing list >> KRnet@list.krnet.org >> https://list.krnet.org/mailman/listinfo/krnet >> > -- > KRnet mailing list > KRnet@list.krnet.org > https://list.krnet.org/mailman/listinfo/krnet > -- 'Any sufficiently advanced technology is indistinguishable from magic’. Arthur C Clarke
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