What Prop to use?
 

Here is my question. I have a OS 46LA motor in a 40 size yak-54. I am looking to get the best vertical climb and hang to plane on the prop. I think Iwould use an 11X6 rather than a 12X7. Am I correct that going to a smaller diameter prop with less pitch will give me better climb an thrust but lose speed. I am not looking to gofast. Your inputs would begreatly appreciated.

Dan

RE: What Prop to use?
 

The APC 12.25*3.75 was made specifically for that engine and 3D.

RE: What Prop to use?
 

That prop will give good thrust for vertical and 3D?</p>

RE: What Prop to use?
 

Thanks! I see that the APC 12.25X3.75 is what I am finding searching the web.

RE: What Prop to use?
 

11x4apc would work well too, and give a faster spool up

RE: What Prop to use?
 

no!
11X6 will have less speed and thrust and power.
for increasing the thrust ,diameter have to be larger.

RE: What Prop to use?
 

If you want power, its a low pitch, speed is high pitch. diameter is what affects how fast your rpm will come up when you hit the gas(spool up).
dan

RE: What Prop to use?
 

The only other prop to try on that plane/engine which will spool quick and have good pull is 12x4. Xoar is the best.

RE: What Prop to use?
 

I second ThumbSkull's nod to XOAR being the best. Take a "net" trip on over "Swanyshouse" and see what Paul has to say about the XOAR props. The profile crowd really like them.

RE: What Prop to use?
 

The cheap black MA 12x4 is also a good choice. I don't recommend them often, but they are a good choice for your application.

David

RE: What Prop to use?
 

Thanks for all the input!  I appreciate it.