Thanks for the info. On Mon, Sep 9, 2024 at 9:48 PM Luis Claudio <dallasbori...@yahoo.com> wrote:
> Keith I was out at the airport today and I took a picture of my > installation, and here you can see how I mounted mine. The braided lines I > buy relatively cheap at Smiley's Auto Racing Shop in Dallas. I think they > are about $12 for a relatively long braided line. The sender is a VDO > generic unit for my Revmaster 2100D. > > Luis > > On Monday, September 9, 2024 at 02:25:41 PM CDT, K W <kwiese...@gmail.com> > wrote: > > > Thank you everyone for your response. > > My oil pressure line is just a 1/8 plastic for testing purposes on ground > engine run up. For pressure testing. > > Luis thank you. I will take your advice and go with A permanently steel > braided line to an added direct Reading oil pressure gauge in the > instrument panel. At this point, I probably will not worry about whether > the sending unit has to match the HAPPI instrument oil pressure gauge and > probably just put on a generic sending unit and see how that affects the > instrument Reading as a remedy and a back up for dual oil pressure > instrumentation. > > Cheers > Keith > N2022D > > On Mon, Sep 9, 2024 at 12:33 AM Luis Claudio via KRnet < > krnet@list.krnet.org> wrote: > > I am having the same problem on my 2100D. I've had fluctuations on my Oil > Pressure EMS indicator from a normal (temp) oil pressure of 30PSI dropping > down to 12PSI which sets off bitching Betty. I connected a mechanical > pressure gauge on a tee where the oil line comes off the engine, one branch > of the tee goes to the VDO sending unit mounted on the firewall (braided SS > line) and the gauge is mounted on the engine coming off of the engine case. > This is only for testing purposes with the top cowling off.. > > The mechanical gauge has recorded pressures as high as 45-50 when the > engine is cold and 23-30 when engine is at normal temperature (approx. > 140deg F). On the contrary, I have recorded pressures as low as 12 PSI on > the EMS during the same test. > > I have replaced my oil pressure sending unit three time. My latest one is > a VDO unit. The other two previous units were bought on the internet from > China. My oil line is a SS braided flex line from the engine to a header on > the fire wall which connects to a test port for a mechanical gauge and a > secondary port for my sending unit. I was wondering if the line has an air > pocket in it that acts like a hydraulic hammer and causes the fluctuations. > My second thought was to rebuild the oil pump. > > Sorry that at this time I have no solution, but I am working on the > problem. > > Luis > > > Sent from Yahoo Mail for iPhone > <https://mail.onelink.me/107872968?pid=nativeplacement&c=Global_Acquisition_YMktg_315_Internal_EmailSignature&af_sub1=Acquisition&af_sub2=Global_YMktg&af_sub3=&af_sub4=100000604&af_sub5=EmailSignature__Static_> > > On Sunday, September 8, 2024, 4:25 PM, Larry Flesner via KRnet < > krnet@list.krnet.org> wrote: > > > On 9/8/2024 10:50 AM, K W via KRnet wrote: > > Hello to everyone. > > I have a very erratic oil pressure gauge reading in the cockpit. > > Installed a connector T at the oil pressure port on my 2100 D and > > attached a direct reading gauge for verification. Direct reading gauge > > is very steady oil pressure while cockpit > > instrumentation is sporadic fluctuating from 0 to 40. my question, > > assuming I need to replace the sending unit, does a sending unit have > > to match the happi gauge or can I buy an off the shelf sending unit? > > > > Cheers TIA > > Keith > > > +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > > Keith, > > Not seeing a response I'll throw in my non-mechanic opinion. Buy an off > the shelf gauge and see if it matches the direct reading test gauge. I > can't imagine that it wouldn't. My only concern is that any gauge used > have a very tiny orifice in line in case of a leak in the gauge it > doesn't dump all your oil before you can get down safely. > > 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 > >
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