im a thinkin that you may have kind of answered the question rob. it
would seem whether the mechanisim is for a grob, a dimona or the
occasional industrial size egg beater, there is very little difference
between the 2400 and the 2000. its probably just more aircraft (or
industrial egg beater) specific. not sure what could be adapted for
taifun. i know there are some differences between the mk1 and mk2 h36
pitch change mechs and that crow bars dont float so well but thats about it.
i may be able to get you some photos this weekend bruce, of my h36 (mk1)
and a g109a that has been in storage for 5 or ten years if they of any help
cheers
ric
On 16/03/2021 1:07 pm, Rob Thompson wrote:
I am only thinking H36 Dimonas..... It has now been 20 years since I
worked on a Grob!
regards
Rob
Rob Thompson
0429 493 828
On Tue, Mar 16, 2021 at 3:59 PM Ian Williams <[email protected]
<mailto:[email protected]>> wrote:
The prob with the Stemme L2400 Rob was that the oil temp valve and
spin on filter were in the way of using the original Grob pitch
change system
So had to be on the other side (same as the Dimona )
Sent from my iPhone
On 16/03/2021, at 5:09 PM, Rob Thompson <[email protected]
<mailto:[email protected]>> wrote:
When we installed a L2400 as a replacement for a L2000, it was a
direct swap... just altering the length of the pitch change cable.
If you want to use a L2000 pitch change mechanism on a L2400....
They are just very slightly different and you may find that the
prop doesn't feather completely and may windmill a little bit.
regards
Rob
Rob Thompson
0429 493 828
(Please note that my new email address is [email protected]
<mailto:[email protected]>)
On Tue, Mar 16, 2021 at 10:54 AM Michael Stockhill
<[email protected] <mailto:[email protected]>> wrote:
Thanks, Ian.
M
On Mon, Mar 15, 2021 at 4:43 PM Ian Mc Phee
<[email protected] <mailto:[email protected]>> wrote:
Michael
Some years ago we fitted a Sauer S2500 to our dimona and
were able to use the gear change metalwork. That engine
was 15mm longer so rear engine mount was shortened but
the master (the bone) was moved to the cockpit of
firewall and mounted on standouts and the shaft was
shortened. Personally I wod do this simple mod to all h36
as gives more room at rear of slick 4330.
We already had the BT Blades (rount tip) and outr STC
required that (not the T with point tip)
The electric prop sure can use power and as battery gets
low it slowly goes coarser. In extreme case it will no
longer climb. Thus with the hk36R you must keep an eye
on voltage and think manual suggest TURN OFF ELECTRICS to
save power.
Back to the 2500 Sauer I was never happy with the cruise
setting. Recently I got a sliver taken off the adjust
nut which brought the two settings closer together. I am
extremely happy with the results, not only can I cruise
at 90 kts to 95kts (even 100kts). The bonus is IT USES
LESS FUEL. The throttle is back 8mm than before. In
cruise it is going along at 2800rpm which is close to
spot on to max torque. I think previously the engine
was labouring going up the hill. The higher revs are fre
revs. The engine loves it.
Another on props is club has a falke which had L1700 but
now fitted a L2000 but have retained the original 75cm
pitch (150 dia) which Scheibe approve but most these days
have 90cm.pitch. It climbs like a home sick angel at
3000revs
I have not answered your question
Ian McPhee
+61 428847642
Box 657 Byron Bay NSW 2481 Australia
On Tue, 16 Mar. 2021, 07:44 Michael Stockhill,
<[email protected] <mailto:[email protected]>> wrote:
Ian,
That would be great if you sent some snaps to Mike
Hoffman, and copy me too!
[email protected] <mailto:[email protected]>
You guys are great.
M
On Mon, Mar 15, 2021 at 1:23 PM Ian Williams
<[email protected] <mailto:[email protected]>> wrote:
Gidday Michael,
I may be of some help there. A few years ago I
installed a Limbach L2400 from a deceased Stemme
S10 into an early Grob 109A and used the original
Hoffman prop. It was a mission as we also applied
for a 1 off STC. Which was eventually approved
by the NZ CAA.
However at the time I was unaware that the
approved prop for that combination was an MT.
So I designed a system based on the Dimona H36
pitch change.
So it the dude wants some pictures of the system
I can send a few
The Grob has since done about 300 hrs and no
Problem
Best regards from New Zealand
Ian Williams
Sent from my iPhone
> On 16/03/2021, at 8:58 AM, Michael Stockhill
<[email protected] <mailto:[email protected]>> wrote:
>
> I caught up with the Taifun group when
researching resurrection of a Taifun here in the
states.
>
> One Taifun owner makes many 6-8 hour wave
flights. He said he removed his MT propeller
which requires electric power for unfeathering
because his batteries run too low. He installed a
Hoffman on his L2400, but he does not have a
pitch change mechanism. I expect to ask him if he
then flies with the engine windmilling, and has
flat pitch for all flight. I don't yet know the
model number of his prop.
>
> Questions for the group:
>
> Are the pitch change lever and components the
same on the L2400 as on the L2000?
>
> Does anyone have a set of those components for
either series engine?
>
> I am 1000 miles from my parts books. Are these
parts Limbach or Diamond/Hoffman?
>
> Thanks for your usual insights.
>
> Michael Stockhill
> Polson, MT
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