DA 100
12-26-2003 | 07:16 PM
#2
RE: DA 100
local users typically get low to mid 6000 rpm on that specific setup on stock mufflers -
Do not squeeze the needle trying fo some magic number - if the engine is new -
(these are three seperate users)
Do not squeeze the needle trying fo some magic number - if the engine is new -
(these are three seperate users)
12-27-2003 | 08:07 AM
#5
RE: DA 100
Has anyone else noted that the Mejzlic 28x10 and 27x10 --are about the load on an engine?
Strange -but they seem to have shifted effective pitch for more disc area -
Actually not a bad trick - as some models like more disc area.
I use bigger props on smaller -lighter models - then the engine can still "jump" .
A Bambula 26x10 loads about the same - on the ground but on alight plane really cranks in the air.
They sent a new prop design which I test ran and noted it was 400-500 under a MenzS same size
Their comment was - "we do not design prop for static rpm - but for in flight performance ".
They do have a point -
Strange -but they seem to have shifted effective pitch for more disc area -
Actually not a bad trick - as some models like more disc area.
I use bigger props on smaller -lighter models - then the engine can still "jump" .
A Bambula 26x10 loads about the same - on the ground but on alight plane really cranks in the air.
They sent a new prop design which I test ran and noted it was 400-500 under a MenzS same size
Their comment was - "we do not design prop for static rpm - but for in flight performance ".
They do have a point -
12-27-2003 | 10:48 AM
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From: Hammond,
IN
RE: DA 100
Yes DH, I also have observed that the Mejzlik 27x10 and 28x10 are about the same load. I've been running the 27x10 for several years on a 3W-100 in a 33% Edge. Performance is excellent despite a heavy airframe (29 lb). Friends who run the 28x10 prop, get about the same static rpm with the 3W-100. I would imagine that the 28 inch prop has more flywheel effect, but that's just a guess. I wouldn't use either of these props for 3D, but they're great for sequence flying.
12-27-2003 | 12:57 PM
#9
RE: DA 100
A SWAG--- probably start with some 26x10 stuff -
This size is not to small for any 100 class engine -if you are doing 3D stuff where the engine really neva gets a chance to unload .
it also keeps em from going up in smoke from simply being overpropped.
(Now some one will bring up their XXXX engine which sheds blades on anything under a 30 x10 --)
This size is not to small for any 100 class engine -if you are doing 3D stuff where the engine really neva gets a chance to unload .
it also keeps em from going up in smoke from simply being overpropped.
(Now some one will bring up their XXXX engine which sheds blades on anything under a 30 x10 --)
12-27-2003 | 05:48 PM
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From: Hammond,
IN
RE: DA 100
If it's a 3W or DA-100, I'd use a Menz-S 27x10 for 3D. Great pull, and quick acceleration because it's a light wood prop. The prop can be noisy in straight and level flight if you let it unload and rip. This prop will turn 6400-6700 rpm static on these engines.
12-28-2003 | 07:49 AM
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From: Clayton,
NC
RE: DA 100
ORIGINAL: Diablo-RCU
If it's a 3W or DA-100, I'd use a Menz-S 27x10 for 3D. Great pull, and quick acceleration because it's a light wood prop. The prop can be noisy in straight and level flight if you let it unload and rip. This prop will turn 6400-6700 rpm static on these engines.
If it's a 3W or DA-100, I'd use a Menz-S 27x10 for 3D. Great pull, and quick acceleration because it's a light wood prop. The prop can be noisy in straight and level flight if you let it unload and rip. This prop will turn 6400-6700 rpm static on these engines.
Thanks
12-28-2003 | 08:30 AM
#14
RE: DA 100
The 27x10 -on the 100DA tops out at the 6400 figure at our 4500 ft elevation - but still a very good combo-
for ONLY 3D stuff - you might prefer to reshape the prop for a few hundred more revs -
for ONLY 3D stuff - you might prefer to reshape the prop for a few hundred more revs -
12-28-2003 | 11:01 AM
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From: plainfield,
IL
RE: DA 100
ORIGINAL: Diablo-RCU
If it's a 3W or DA-100, I'd use a Menz-S 27x10 for 3D. Great pull, and quick acceleration because it's a light wood prop. The prop can be noisy in straight and level flight if you let it unload and rip. This prop will turn 6400-6700 rpm static on these engines.
If it's a 3W or DA-100, I'd use a Menz-S 27x10 for 3D. Great pull, and quick acceleration because it's a light wood prop. The prop can be noisy in straight and level flight if you let it unload and rip. This prop will turn 6400-6700 rpm static on these engines.
