View Full Version : Prop Pitch Table?

02-26-2007, 10:05 AM
Does anyone know if there is a table or tables someplace which indicate the proper throttle/prop pitch settings for use with manual prop pitch control? I thought I was doing ok but am quickly learning that what I thought was the correct setting is often far from it http://forums.ubi.com/images/smilies/sadeyes.gif Maybe if enough of us push for this one of our wonderful experten will create one for us http://forums.ubi.com/images/smilies/winky.gif

02-26-2007, 10:25 AM
100% for go
0% for no go.

There's a bit more to it, but them's the basics

02-26-2007, 10:33 AM
Sorry, I don't have such a table. Perhaps IAS to pitch setting for 109's kind of thing?
Hard to say if mach is modeled with respect to that as we've been posted that some mach
compression effect(s) is modeled but rather limited, which can be shown.

For me and 109's on manual pitch; I set pitch fine to start and work power until rpms are
between 2100 and 2500. As speed increases I adjust power and pitch to keep rpms in that

What changes first depends on how speed increases and is important. In a dive where rpms
are climbing I first lower power and then lower pitch. At other times when power is high
and rpms drop, like speeding up in level flight, I increase power before lowering pitch.

When I spend much time at all flying 109 manual I quickly get to where the engine sound
is how I know to adjust most usually power alone. In that respect it is like driving a
manual stick car or a motorcycle. It allows me to keep within a good range regardless
to my situation not only of speed but of loading on the engine since to me the proper
pitch depends on both.

Hope that helps.

02-26-2007, 10:36 AM
I like Megiles response. It is most factual.

0% should be a feathered position but it isnt. 100% -55% is probably the best. Look in cockpit at RPM gauge, each plane has diff RPM's for the same prop %'s. So u gotta check the planes RPM gauge as well.

The instruments in the cockpit are there for a reason.

02-26-2007, 10:56 AM
The instruments in the cockpit are there for a reason.
Ok...I know I'm a nOOb...that's why I asked http://forums.ubi.com/groupee_common/emoticons/icon_biggrin.gif Some of the guys on the 334th server were flying -190's and using 70% to climb and 40% for cruise - seemed like a really coarse setting and much lower than I had been using (I was not going below 65% at any time). So I started thinking that maybe someone had assembled a rough table for the most popular aircraft that would say something like -

Best climb in Fw-190A is 95% throttle and 70% prop pitch at 200kph indicated. (just example numbers are wrong I'm sure)

If no one has produced something like this I'm surprised as it would be a great help to myself and the other nOOb's who are trying to learn this on our own.

02-26-2007, 11:03 AM
Originally posted by Stackhouse25th:
I like Megiles response.

Me too http://forums.ubi.com/images/smilies/agreepost.gif

Someone did post a chart with best prop pitch settings for maximum acceleration in the Focke Wulf.

I don't have it any more, but it was pretty much 80% - 100%.

Maybe a search will find it

02-26-2007, 11:43 AM
I run on 100% or Auto all the time, am I doing something wrong? http://forums.ubi.com/images/smilies/sadeyes.gif

02-26-2007, 11:50 AM
BP, you will not make your best speed at 100% pitch in a 109 on manual prop control.
If you are constantly climbing or turning hard then no biggie as long as you don't
blow the engine up. You do know that high rpms on any engine makes more heat and
uses more fuel, right? Again, those may not be concerns depending on how you fly.

02-26-2007, 11:52 AM
I've been flying that way offline for ever but online I am getting caught ALL the time. I was practicing formation flying online and until the other guys talked me through adjusting my prop to match theirs I was getting left in the dust while on auto.
But without a willing instructor flying with you and providing guidance on TS how do you really know if you are doing it right?
When I got my ppl the POH had a chart for specific prop and manifold pressure settings to obtain best performance. I just hoped someone had produced something like that to assist in learning this.

02-26-2007, 11:57 AM
The pilots manual of most American planes (and maybe all planes) have charts similar to this one for the F6F Hellcat:


There's a lot of good information in this one chart, but for throttle/prop pitch under various conditions you would look at Manifold Pressure (which is controlled by throttle) and RPM which is controlled by prop pitch). You just adjust throttle and prop pitch to whatever gives you these numbers on your cockpit instruments.

I've also read that some people in general just keep the throttle percentage and prop pitch percentage the same. e.g. if you set your throttle to 70% you set your prop pitch to 70%. I haven't experimented with it to verify that that's a valid method, but it may be pretty close for cruise and climb (certainly not for landing).

02-26-2007, 12:03 PM
yuo ppl forget that UUUUUUUUUUUUU need a best rate of climb speed in addition to a best prop climb setting and manifold setting.

It's complicated, thats why most ppl rnt reel pilotz like i am, cuz im bad ***. im pretty much the best.

02-26-2007, 12:38 PM
In a power-on dive I know that I don't use the same settings as same speed in level flight.
And best performance to me depends on what I want to do. Point A to B best is not combat
best for example. But I am not expert pilot. I just try to keep the speed up and motor
happy at the same time.

02-26-2007, 12:41 PM
Originally posted by Stackhouse25th:
yuo ppl forget that UUUUUUUUUUUUU need a best rate of climb speed in addition to a best prop climb setting and manifold setting.

It's complicated, thats why most ppl rnt reel pilotz like i am, cuz im bad ***. im pretty much the best.

Huh???? Just what does the last sentence mean?

Anyway, for cruising to save fuel, I set prop pitch at 90 or a little less. If I'm dogging it I set back to 100%. This is for American planes only. Some have the auto prop pitch....nice feature!

02-26-2007, 01:01 PM
I played on FW190 with pitch some time ago, but after flying long time with my favourite brick, I can say that auto is good enough, as long as it keeps 2700RPMs, just when u make immelman or something, turn 100% manual pitch, to not allow rpms to drop. I cant see any power increase at 2900 RPMs with manual pitch, only faster overheating of the engine. I dont really think that u can gain any significant advantage while using manual, but u are wasting ur precious time, instead of keeping ur SA, and not become too overloaded. Particularly, in rl u need to set lower pitch while diving, but here it gives u just lost in power, so I dont confuse myself anymore until SOW which such a things.

02-26-2007, 01:36 PM
The Zeno's Warbirds website has a lot of free charts and diagrams for various planes like the one I posted above for the F6F. And in some cases they have entire pilots manuals for free download.


Scroll down til you see 'More Neat Stuff' on the right of the page.

I also ordered the Pilots Manual on CD for a couple planes from Zeno's and learned a lot of things that I didn't know that helped with complex engine management.

02-26-2007, 03:06 PM
There's prop pitch tables for the FW190-a5 etc on Eastern skies in the CEM guide if that helps http://forums.ubi.com/groupee_common/emoticons/icon_smile.gif

02-26-2007, 03:08 PM
Sweet! Thanks http://forums.ubi.com/images/smilies/clap.gif