At 08:22 19 January 2019, JS wrote:
On Friday, January 18, 2019 at 6:15:16 PM UTC-8, Michael Opitz
wrote:
At 20:20 18 January 2019, Papa3 wrote:
On Friday, January 18, 2019 at 6:02:45 AM UTC-5, Martin
Gregorie
wrote:


How much, if anything is there in common between the fixed
u/c
mounting
structure in a Twin Astir and an Acro II?

Just a thought inspired by the apparent ease with which the
early Libelle

201s could be converted from fixed to retractable u/c.



Completely different animals. A number of owners have
investigated this,
and it's not a simple issue at all. The structure is completely
different
as well as the mechanicals of the wheel, mounts, etc.

Several operators I know of have pinned the gear in the down
and
locked
position. We'd all love to reshape the rear seatpan, but it's
integral
to the structure and would require an engineered solution.

We have 2 Twin Astir 1 Trainers with factory sprung fixed gear
with
a disc brake. The rear seat stays the same. I think the wheel
location is a couple of inches forward of the one in the RG Twin
1's
because the tail is heavier to lift. I don't think that even if
Lindner
has the spare Trainer gear parts, that they want to provide a
retrofit
kit to convert a regular Twin into a Trainer.

RO

There is a Twin Astir here that is modified so the gear does not
retract.
The gear handle only operates the gear warning. I may see the
owner on
Monday.
Jim


I know there are regular retractable gear Twin 1's that have been
modified so the gear can't retract, but for USA purposes, those
modifications are not approved within the TCDS, so can one make
a mod like that with just a 337 form and still keep a USA Standard
Airworthiness? Lindner has no interest in approving such a mod. If
there are broken or bent parts in the mechanism, they will sell you
the replacement parts so that it can be brought back to original
specs.

RO