Hi Everyone
Yesterday i tried The Apc Prop, But, I'm flying on a very bad road and it broke (there are many bores in the road)
it isn't elastic as the black master, so i want to try the scimitar that is elastic, like the black master, and looks like apc.
is it good?
Liran

Liran

The scimitar prop is good

jim

Thanks
Another Opinions?

I am using master scimatar props whenever I can get them in the sizes I need. They work great

I have just completed some prop/thrust testing. Using the same engine on the same stand switching props I found the Bolly clubman, MA Scimitar composite, and APC to perform at about the same level. The Apc suffers from turbulence at the hub and requires a large spinner to "shade" the hub for better performance. The Bolly comes in half inch increments so thrust readings end up in between other equivalent props.
The MA Scimitar has a thinner hub which allows the use of spinners on engines with shorter prop shafts. It looks more like a propeller and less like a dagger than some others. It is no more flexible than the others either. If you will break an APC you will most likely break the Bolly or the Scimitar too. The GF series Master Airscrew is the most forgiving widely available propeller. It is less efficient but survives longer. There are propellers designed to survive contact with the ground. They are marketed to combat flyers and beginners and are quite flexible.
You can build a plane to survive a crash or build it to fly but seldom can you do both. The APC, Scimitar, Bolly, Zinger wood and many others are built to fly but will break in a serious prop strike. The Flexible props are made to survive a prop strike but give highly compromised performance. The MA GF series spans that description with one foot in each camp and standing fully in neither.

Grish propellors makes some very durable props.

I have many Grish magnum and tornado props. When I first got back into the hobby I bought quite a number of them. Since then they all but dissapeared. At one time it was reported that the family had taken them off the market to be retooled. Many complained that they could get no response from the company. The Grish Magnum props are similar in rigity to the GF series of Master Airscrew props. The tornado white series is about the least rigid of any I've seen. The silver tornados are about half way in between. The Magnums' efficency is no better than the GF props but acceptable if you like their looks better.

Liran,


The Master Airscrew Scimitar props are excellent propellers.
They offer nearly the same efficiency and thrust of APC props and are more likely to survive ground-strikes.

The black GFN Master Airscrew props, or their larger '4-stroke' models, are a real waste of time in comparison.

They cost significantly less too, but their RPM limit is 160,000/D, which is lower than APC's 190,000/D.


Try going to the 'Cyclone' airstrip.
It has no 'pot-holes' (your 'bores'...) and is a really nice place to fly.

Main Entry: scim·i·tar
Pronunciation: 'si-m&-t&r, -"tär
Function: noun
Etymology: Italian scimitarra
Date: circa 1548
: a saber having a curved blade with the edge on the convex side and used chiefly by Arabs and Turks
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Interesting, huh?

Ernie

By all means use the scimitar, it survives more close encounters with you-know-who and as mentined before is easier to fit in engines with short hubs. I like to use scimitars in engines .61 and below, as the engine gets bigger I liek the APC's better but for smaller engiens I LOVE my scimitars.