Motorglider Tug

The hk36 Dimona with either 100hp or 115hp is a large outlay and the
prop can easily be damages with the longish groundrun if there is any
stone at all on strip. At the moment I am trying to deceide engine
for a late model falke - Sauer 2700 105HP, Rotax 100HP or Jabiru
120HP. I have all the engineering done for the Jabiru by one of
Australia's most experienced Reg35 engineer and much can be done (and
MUST be) to get the Jabiru 6 cooling sorted out but it is still
aircooled. Props are cheap for Jabiru but are really important to get
climb. At the moment I am near complete with a Falke Jabiru 85HP
conversion but that is only for towing Libelles etc and then on
blacktop. The good thing about Jabiru for us in Australia is parts
cheap and overnight. I do know the French are doing a falke
conversion to towing without Scheibe approvals!! Ian McPhee
Australia

On 12 Nov 2004 11:39:55 -0800, (Ian McPhee)
wrote:

The hk36 Dimona with either 100hp or 115hp is a large outlay and the
prop can easily be damages with the longish groundrun if there is any
stone at all on strip. At the moment I am trying to deceide engine
for a late model falke - Sauer 2700 105HP, Rotax 100HP or Jabiru
120HP. I have all the engineering done for the Jabiru by one of
Australia's most experienced Reg35 engineer and much can be done (and
MUST be) to get the Jabiru 6 cooling sorted out but it is still
aircooled. Props are cheap for Jabiru but are really important to get
climb. At the moment I am near complete with a Falke Jabiru 85HP
conversion but that is only for towing Libelles etc and then on
blacktop.

Hi Ian,
be careful with the Jabiru engine. I've seen a couple of aircraft with
these engines, and they all have significant problems with their power
output (the 85 hp engine looked more like about 65 hp, and the 120 hp
had less performance than a Rotax 912S at 100 hp).

As you say it - the cooling of the 3300 is a problem, not to mention
the air supply to the centered airbox (this is where the power loss
came from onth planes I saw).

If you are searching for an engine for a tow plane, check the Limbach
2400 ET/DT. It delivers true 135 hp with an unregulated turbocharger,
weighs 85 kg and is available for about 26.000 EUR. It's used in a
G-109 conversion and over 100 of these engines are already flying,
apparently pretty successful and reliable.


Bye
Andreas