UL Power Forum (54)

Discussions Replies Latest Activity

Back up power circuits

Hey all. Wondering what people have done with their back up circuit designs, specifically for a single battery, single alternator set up. I…

Started by John Bell

3 on Sunday
Reply by Jerold Ebke

350iS Oil Temps

Just finished my annual inspection with 400 hrs on the 350iS. With minor exceptions the engine has been awesome so far. Compression's are a…

Started by David R Ferrell

7 Nov 30
Reply by David R Ferrell

Battery capacitor and OV protection

Anybody install the optional 68k capacitor on the battery? Also, the UL manual says that extra protection circuits are not to be installed…

Started by John Bell

16 Nov 23
Reply by John Bell

EarthX Lithium Battery

Thinking of upgrading to Lithium EarthX battery to go with my UL350i engine. Any suggestions as to model (battery size) and suggestions of…

Started by Ralph Powell

30 Nov 9
Reply by Loren Warner

Fuel flow test

. I have the 350i engine and need to do the 125% fuel flow test. For those that have done this test could you elaborate on the procedure yo…

Started by Doug Malloy

3 Nov 6
Reply by David Fryday

Prewired R/R connector from UL

To repair my "crispy" wires from the PMA to the R/R connector I ordered a prewired connector from the UL distributor (Wicks Aircraft).  Kei…

Started by David J. Beaulieu

18 Nov 5
Reply by John Bell

Exhaust pipe support

Tapping into the "brain trust" on this forum -  anyone doing it, if so how?  Trying to get some ideas on how to support the exhaust tube an…

Started by David J. Beaulieu

2 Nov 1
Reply by David J. Beaulieu


FYI,  UL mufflers (at least for the 350iS) now come from the factory with a reinforcing gusset to the exhaust pipe flange.  I repaired my o…

Started by David J. Beaulieu

15 Oct 11
Reply by Robert Riat

Fuel psi

Now that I am on my 3rd flight into Phase I on my UL350i Cruzer I noticed that my fuel psi is below min. I am only getting 29 psi in flight…

Started by Doug Malloy

4 Sep 25
Reply by Tom Sullivan

Oil Cooler

I have a UL 350is that has not yet been started nor does it have any oil yet.  I have been reading the postings about the Oil Cooler proble…

Started by Scott Miller

10 Sep 22
Reply by Scott Miller


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