ys 110 prop size
 

I'm just finishing up a showtime with the ys 110 in it. There seems to be so many suggestions on the prop sizes being used.
From 14x8 to 16x6. Since I live at sea level I would lke to know what the ideal size to use. I'm a little confused on this issue. thanks for the help.

RE: ys 110 prop size
 

prop selection will be very dependant on model, fuel, and other factors. How the model will be flown and how the model responds to the prop are big big factors in choosing the best prop for the application. You just have to try some and see what you like.

On the 110 find a prop that turns about 9400 rpm and fly it there. There will be more than one choice that fits the bill. I know that APC 15-10 on CP 30% heli fuel is a good choice. I also know that the APC 14-12 is a pretty good choice also.

Less nitro mean you need to use less prop. More Nitro will allow you to run larger loads for props.

What ever you do run it at about 9400rpm and the engine will make the ebst power and be the happiest.

Troy Newman
Team YS

RE: ys 110 prop size
 

bwd:

Prop size decisions have to do with a number of things you want to achieve. Some guys flying around just do not realize how much difference in the way a model flys prop size will make. You will see one guy in rcu that is trying to make his extra or edge go faster, trying to get to around 100 mph. Im sure the same guy will bad mouth the plane maker when the wings or something else fails at speed. My direction is to make the airframe and engine happy. The engine, easy to spool up when you need to get out quick, and not lugged down and overheat. I seem to end up around a 4 pitch in both glow and electric to be the best combo for me and engine. Benefits of lower pitch from my aspect are, the power to pull out when needed, seldom overheating heating issues, throttle is a little more forgiving when hovering low. My YS 110 on a 60 UCD likes a 16 X 4 APC-w. We fly in desert heat of up to 110 here in California centeral valley. If the engine started to overheat a little, I would go down one in length. (kids do, I'm home with the AC)
Ok, now thats one persons approach that makes things easy on the equipment and flyer. The pros seem to use a higher pitch, 5 or 6 to make things happen a little faster, torque rolls are easier as one example. I try to remember QQ, Hyde and the rest are not human. None the less, try to learn as much as possible from the best. You will be amazed at how much those guys play with their CG, related set ups and radio programming to trim out the bad habits of any airframe. One of the reasons they can make a dog look great. RC is a wonderfull hobby, you will never learn everything available for improving, and doing things a better way, but never stop trying to achieve the best results. You and your plane will be happier for it all. ENJOY

RE: ys 110 prop size
 

thanks for the info on the props. I don't plan on screaming around at 100 mph with this plane. Strickly 3D and some pattern.
The fuel I have is 20%. Since I live at sea level and the temp never gets above 80 deg F with the humitity around 60-80%.
I was thinking of starting with a 16x6 Does this sound relistic I just want to play with it for 3D. Again thank you for the advise.

RE: ys 110 prop size
 

bwd:

Sure, try the 16 X 6 and fly it a few times. Then, same day, right after a flight, to to the 16 X 4 W apc and compair the difference. Bet lunch you stay wih the 4. APC makes a 3.8 pitch for some popular length props, makes the correct pitch area obvious to most. Sort of like sex, do what feels best to you. If you check all the pro's expo. I suspect none of them will be the exace same, but most will be in a ball park area. There is always the exception. Have a old dog flyer in the club that will not use expo for anything. He is one of the better club pilots. If you check out his planes, you will find some inovative mechanical connections that in effect give you expo. Its not wrong, just sort of hard headed, and he is not German or Irish, so no genetic excuse. Oh yea, he is a retired USAF Officer, did his service in a fighter aircraft, may have something to do with it.

RE: ys 110 prop size
 

Rmenke

RE: ys 110 prop size
 

Rmenke


Oops sorry about that.Hit the wrong key. But thank you for the input. I'll try both props,
and see what happens.

RE: ys 110 prop size
 

Since this thread is about prop sizes, I thought I would jump in here since I am looking for a good suggestion for a prop as well. I am planning to run my 110 on a 40 size war bird for racing. I do want to tear around at 140 MPH if possible. I've seen some guys using 13x10 or 13x11. what do you guys think about this?

Thanks, Terry

RE: ys 110 prop size
 

try a 13-13N or the 14-13 or 14-14

These are just a guess but if you want more speed the 10 pitch props are not as good as say the 12-14 pitch props. We do this in pattern models. The low pitches tend to slow us downa little abd give more braking. The higher pitches keep the model going if its a dragging model we tend to fly 12 pitch props so the model has more speed.

For racing I would think the 13 and 14 pitch props would be really good.

On the 110 keep the RPMs up in the mid 9000 range like 9500 and it will be happy.


Troy Newman
Team YS

RE: ys 110 prop size
 

HI Troy,

I tried the 13x13N and it spins about 9,600 slightly rich. I tried an 11x14 APC and it turns that at 10,500. Is that too much for this engine? Seems like the specs say it can turn up to 13,700. Maybe this is the ticket for racing. I guess I'll have to try them in the air to really know.

Blessings, Terry

RE: ys 110 prop size
 

I use 15x8 and works fenomenal, at 2000Ft but on 30% nitro on my Showtime.

Regards

RE: ys 110 prop size
 

Try an Apc 16.5x5W. It is the best prop for this engine!

RE: ys 110 prop size
 

As I said before prop selection has to do with the task you need. So a War Bird Racer is not going to work well ona 5 pitch prop....smaller diameter and Higher pitch will help it.


Back to the question of too much...YEP over 10,000 is too much. Keep it down below 10K

try the 14-14 or the 13-14....

If you want to 3D the model then a good prop is likely the 16-5W...War Bird Racer I say the 13-13 or 14-13, 14-14

Troy Newman
Team YS