I had a warning when our throttle became progressively stiffer over a period of several months. Assiduous lubrication of all accessible pivots and cable ends didn't help. Instead of pulling the "piano" wire, I continued to lubricate. Of course, just before an engine start the wire broke, right in the middle of the run where lube never did reach. Easy to fix, works smooth now, inexpensive to do...why oh why didn't I listen to my machine? Lesson learned (again), these Dimonas have systems which have seen long service and should be attentively and proactively maintained. Tom
On Wed, Apr 17, 2019, 18:28 Ian Mc Phee <[email protected]> wrote: > DIMONA H36 WITH SAUER S2500 > > For guess for several years now and only occasionally say ⅓ the time AND > ONLY FIRST FLIGHT OF DAY dimona takes off but you notice revs are down say > 150 REVS. Soon after breaking ground say 100ft it goes to expected FULL > normal revs. You just continue and fly. > > For years I thought it was an issue with carbs (they are bings) but turns > out throttle cable was stiffish and spring was not quite strong enough to > pull it all the way when seems things are cool. Lubrication of cable and > extra spring to be sure fixed it totally. I did check at last a annual but > did miss this as at the time it was ok. > > I have got in the habit of running engine at lowish revs for 4 minutes > then shut down for 5 to even 10mins. This 4 min run spreads warmth through > the engine and oil temp gauge reads say 55deg when you start after the > break. Take off's after this warm up procedure never had an issue with > zero lowish revs to 100ft say.. > > This dimona has done 3500hrs and engine almost 900brs and so simple to > fix. > > Ian McPhee > +61 428847642 > Box 657 Byron Bay NSW 2481 Australia > > PS when touring with others we get into habit of the 5min warm up with a > break and we all think it works well as I hate giving full power take off > to a cool engine. Worth considering >
