Hello. I was wondewrinf if anyone could tell me what a 0x0 prop designates? It is showing up in many reference tables relating to motors I am interested in, and just wanted to know how the specs attached to the 0x0 prop related to the motor. Thanks! - matt

Do you have a link to the reference so we could see them. I don't know if that is something special, but from what I know about props a 0x0 prop can't exist. In the discription for a prop the first number is the diameter of the prop and the second number is the pitch. For example, a 12x6 prop would be 12 inches in diameter with a pitch of 6. In your case a 0x0 prop would be 0 inches in diameter and a pitch of 0. therefore it can't exist. If there is something special that I don't know about I will definately stand corrected.

i would asume its the rpm measurment with no prop attatched... but im not sure (nor am i sure why you would wanan bench an engine with no prop on it.... overrev?)

I'm just guessing here, but it might be the plastic flywheel that they use to test engines.

I'm going to guess and say it's a prop that has both of the blades broken off from a crash.........

LOL !!!! that makes the most sense.

i bet it's a common joke when someones prop comes off or brakes off

hey all,

my guess is he is using motocalc or similar and when putting in the type of motor it asks for prop size and shows 0x0 as a default.



bassman

Actually, after this thread was started I Googled a "0x0 prop" and this is one of the sites that came up.
[link]http://www.espritmodel.com/brushless_mega1615.html[/link]

As you can see, a 0x0 prop is listed all the way down the page. Unfortunately my google search didn't reveal anymore information about a 0x0 prop. The mystery deepens!!!

Looks like the 0x0 prop is testing the engine with little or no load at all. Look at the amps -- very low. Yet the rpm's are high.

Yeah I'm going to say it's the RPM's without anything on the engine....

That's definately the engine RPM under no load. They should put it another way.

Sean

The most likely answer, which is fine for electric motors, but will ruin an internal combustion engine pretty quickly.
Dennis-

my probmel was that i was asuming that you were talking about glow engines... running a glow engine with no prop is a very bad idea.... its kile redlining your engine in nutral...

a stick ?

I'd say its a wooden prop with both blades busted at the hub. Usually, engines for sale at swap meets will have this on. The TT .46 Pro I bought last week had this. Hence, a prop with no blades and no twist. I'd think you couldn't hover with this setup!!!

Dave...

I've made lots of those in my time!

my guess is somebody will use this at the field next time a plane crashes!

Hello; Could that have anything to do with April fool's day?

By the way has anybody heard about the new Saito 3 stroke engine? Same power with half the weight. Works great with a one blade prop.

3 stroke engine....I want one! I am looking for a new engine and I have a ton of 1 blade props ...

FYI guys, the three standard measurements for an electric motor is rpm/volt applied (Kv), motor resistance (Ri), and idle current (Io). Kv abnd Io are measured with no load, so for those charts, the 0x0 just indicated no load so you can see the motor specs. If you know those three numbers you can start working up some basic models using Motocalc.

Duke