best propeller for YS 170DZ
05-24-2009 | 08:56 PM
#26
My Feedback: (45)
RE: best propeller for YS 170DZ
Brett's is on a CDI. That is the prop I"m running on my CDI as well. Excellent performance. I know some guys who are running it on a non CDI, but it needs to be a strong engine. It loads the engine more and the non CDI doesnt perform as well in the 7500 RPM range as the CDI setup.</p>
</p>
Arch</p>
</p>
05-25-2009 | 01:22 AM
#27
RE: best propeller for YS 170DZ
As Arch said yes it's on a CDI, however I've run it on a regular 170 as well and liked the results. The CDI does handle it better, mostly in the mid range, but it's still worth trying out.
05-25-2009 | 04:37 AM
#28
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RE: best propeller for YS 170DZ
Hi Bret,
Two questions:
- Where did you get the 19x11 from? Does CH stock them?
- On your CDI do you connect the ignition to the rceiver or you use a separate battery?
Thanks,
Nikos</p>
05-28-2009 | 09:10 AM
#31
My Feedback: (6)
RE: best propeller for YS 170DZ
...2 weeks ago at a local contest I judged a FAI competitor who flew the F sequence with a YS DZ170/19x11 APCcombo on an Osmose. The individual is a very skilled pilot however the aircraft performance was anemic. On a calm no wind day maybe, add wind this engine prop combo becomes a liability in my opinion.
Recently I switched to using the 18.1x11 APC on the DZ 170 on my Beryll~GP. This combo has very good speed control likeI had experienced with the APC 15x11 4bld with excellent vertical which I needed for the new AMA Masters sequence.
Recently I switched to using the 18.1x11 APC on the DZ 170 on my Beryll~GP. This combo has very good speed control likeI had experienced with the APC 15x11 4bld with excellent vertical which I needed for the new AMA Masters sequence.
05-28-2009 | 10:53 AM
#32
RE: best propeller for YS 170DZ
Hey Glen ,,
what about the other guy using the 19-11 apc
with a standard 1.7ys non cdi
I have seen no difference in performance between the CDI 1.7 and the Non cdi using the 19-11 APC
other than a smoother run at Idle and virtually no smoke trail.
the CDIwill not increase your power!
Lets notmix Engine tuning with Prop performance <G>
his engine was not performing well.
Both my 1.7 non CDI`s turn a 19-11 with no effort
Also TheYS I was using had 6 flights on it when I arrived and was not fully broke in.
I have run the 19-11 ,18-12 and 18-11with no problems all three are good props i love them all,
it`s a matter of selecting one for the airframe and flying styles
my suggestion is to buy all of them and choose the one that fist your setup best.
Bryan
what about the other guy using the 19-11 apc
with a standard 1.7ys non cdi
I have seen no difference in performance between the CDI 1.7 and the Non cdi using the 19-11 APC
other than a smoother run at Idle and virtually no smoke trail.
the CDIwill not increase your power!
Lets notmix Engine tuning with Prop performance <G>
his engine was not performing well.
Both my 1.7 non CDI`s turn a 19-11 with no effort
Also TheYS I was using had 6 flights on it when I arrived and was not fully broke in.
I have run the 19-11 ,18-12 and 18-11with no problems all three are good props i love them all,
it`s a matter of selecting one for the airframe and flying styles
my suggestion is to buy all of them and choose the one that fist your setup best.
Bryan
05-28-2009 | 11:13 AM
#33
My Feedback: (6)
RE: best propeller for YS 170DZ
Bryan, had no idea you were running that prop as well. The DZ of the pilot I was referencing must not of been running at peak performance. Yours flew with much authority.
Agreed prop selection is more driven by airframe characteristics and pilot performance preference than motor type. I will try the 19x11 myself this weekend.
Agreed prop selection is more driven by airframe characteristics and pilot performance preference than motor type. I will try the 19x11 myself this weekend.
05-28-2009 | 12:08 PM
#34
RE: best propeller for YS 170DZ
Hi Glen, Yeah ,,
Brett convinced me to try the 19-11 he`s been sold since last year,,
I was running the 18.1-12 and I loved it till the 19-11 came along.
if you put it on, you won`t take it off LOL
your going to love it. you might have to fatten the low end some though,,
The YS 1.7 is the best most reliable smoothestmotor Once broke in,,to date, regardless if you run the CDI or not.
Ihad a low oil1.7 I ran 8 cases of fuel through it last year
it`s now my back up and is still able to run the 19-11
I just put bearings in and bagged it up LOL.
Bryan
Brett convinced me to try the 19-11 he`s been sold since last year,,
I was running the 18.1-12 and I loved it till the 19-11 came along.
if you put it on, you won`t take it off LOL
your going to love it. you might have to fatten the low end some though,,
The YS 1.7 is the best most reliable smoothestmotor Once broke in,,to date, regardless if you run the CDI or not.
Ihad a low oil1.7 I ran 8 cases of fuel through it last year
it`s now my back up and is still able to run the 19-11
I just put bearings in and bagged it up LOL.
Bryan
05-28-2009 | 12:14 PM
#35
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RE: best propeller for YS 170DZ
Thanks for the inputs guys,
Bryan would you recommend to someone to switch to a CDI if weight limit permits? Is it worth really for the average pilot? If used with 30% CP Helidoes CDI create significant smoke trail?
Well on my ProLine i have tested so far 17x12, 18.1x10 and 18x11WPN Ican not say that Iam really satisfied completely with any of these props, the 17x12 is used mainly in windy conditions. Ihave now to to try 18.1x10W and 18.1x11. Just need to find a prop that can really speed the airframe when needed and to fly slow in calm conditions.
What do you think? Inputs are appreciated.
Nikos
Bryan would you recommend to someone to switch to a CDI if weight limit permits? Is it worth really for the average pilot? If used with 30% CP Helidoes CDI create significant smoke trail?
Well on my ProLine i have tested so far 17x12, 18.1x10 and 18x11WPN Ican not say that Iam really satisfied completely with any of these props, the 17x12 is used mainly in windy conditions. Ihave now to to try 18.1x10W and 18.1x11. Just need to find a prop that can really speed the airframe when needed and to fly slow in calm conditions.
What do you think? Inputs are appreciated.
Nikos
05-28-2009 | 03:17 PM
#36
RE: best propeller for YS 170DZ
Hi Nickolas
It`s always fun to have new toys ,,is the CDIfor everyone ,,,No
it does have a big reduction in smoke ,I find tuning it is a little different, and takes some knowledge of the motor over time to understand it.
that being said it`s not hard to run consistantly, and it has a remarkable idle. which is much better for the airframe and servo wear.
You have to understand this motor was developed to be competitive againsttheelectric setups at a world stage. low smoke and thelarge dia props,=low noise,
these are long overdue refinements.
Right now to take advantage of the lightsmoke trail, you have to run a low oil fuel which may not be available in you area.
Most guys have settled on 10% oil. "Cool power" has this as their standard Low oil fuel,,,some are still having good luck on 5% oil But these guys don`t pay for repaires
and I would not recomend it for longevity reasons.
you can run the regular heli fuel on the CDI but youwill have yournormal smoke trail.
If you can afford the weight gain aprox 120 grams" once youfactor the large props " and the c/g shift involved with the new set up,
it`s for you.,,however, if you continue to run 17-12 and 18.1-10(as these are 1.6 props ),you will recieve no benifits from the 1.7 or theCDI version 1.7on smaller props.Themid range is where the 1.7 shines and the extra tourque alows you to run more dia. and pitch.
If you have the ability to run the large props" gear Clearance"you will get a much better touque curve from mid to high throttle settings supper smooth transitions,
and the large dia. props will aid in the downline breaking.
For wind, the 18-12 is the best prop in my oppinion the motor has no trouble pulling it "even on an 11pound aircraft."
and it `s super quiet ,,, also you will not have the over reving problems ,,like with the smaller props ,,, it`s just wasted energy.
hope this helps.
Bryan
It`s always fun to have new toys ,,is the CDIfor everyone ,,,No
it does have a big reduction in smoke ,I find tuning it is a little different, and takes some knowledge of the motor over time to understand it.
that being said it`s not hard to run consistantly, and it has a remarkable idle. which is much better for the airframe and servo wear.
You have to understand this motor was developed to be competitive againsttheelectric setups at a world stage. low smoke and thelarge dia props,=low noise,
these are long overdue refinements.
Right now to take advantage of the lightsmoke trail, you have to run a low oil fuel which may not be available in you area.
Most guys have settled on 10% oil. "Cool power" has this as their standard Low oil fuel,,,some are still having good luck on 5% oil But these guys don`t pay for repaires
and I would not recomend it for longevity reasons.you can run the regular heli fuel on the CDI but youwill have yournormal smoke trail.
If you can afford the weight gain aprox 120 grams" once youfactor the large props " and the c/g shift involved with the new set up,
it`s for you.,,however, if you continue to run 17-12 and 18.1-10(as these are 1.6 props ),you will recieve no benifits from the 1.7 or theCDI version 1.7on smaller props.Themid range is where the 1.7 shines and the extra tourque alows you to run more dia. and pitch.
If you have the ability to run the large props" gear Clearance"you will get a much better touque curve from mid to high throttle settings supper smooth transitions,
and the large dia. props will aid in the downline breaking.
For wind, the 18-12 is the best prop in my oppinion the motor has no trouble pulling it "even on an 11pound aircraft."
and it `s super quiet ,,, also you will not have the over reving problems ,,like with the smaller props ,,, it`s just wasted energy.
hope this helps.
Bryan
05-28-2009 | 04:15 PM
#37
My Feedback: (45)
RE: best propeller for YS 170DZ
Glen,</p>
The guy you are referring to was having other problems with his engine. He also started with a MUCH larger prop than the 19X11. He was originally running a 20X10. He was leaking fuel also and was going to send the engine back to YS Performance. He had much bigger problems than the prop he was running. </p>
</p>
Arch</p>
05-28-2009 | 05:32 PM
#38
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From: Athens, GREECE
RE: best propeller for YS 170DZ
ORIGINAL: flyncajun
Hi Nickolas
It`s always fun to have new toys ,,is the CDIfor everyone ,,,No
it does have a big reduction in smoke ,I find tuning it is a little different, and takes some knowledge of the motor over time to understand it.
that being said it`s not hard to run consistantly, and it has a remarkable idle. which is much better for the airframe and servo wear.
You have to understand this motor was developed to be competitive againsttheelectric setups at a world stage. low smoke and thelarge dia props,=low noise,
these are long overdue refinements.
Right now to take advantage of the lightsmoke trail, you have to run a low oil fuel which may not be available in you area.
Most guys have settled on 10% oil. "Cool power" has this as their standard Low oil fuel,,,some are still having good luck on 5% oil But these guys don`t pay for repaires and I would not recomend it for longevity reasons.
you can run the regular heli fuel on the CDI but youwill have yournormal smoke trail.
If you can afford the weight gain aprox 120 grams" once youfactor the large props " and the c/g shift involved with the new set up,
it`s for you.,,however, if you continue to run 17-12 and 18.1-10(as these are 1.6 props ),you will recieve no benifits from the 1.7 or theCDI version 1.7on smaller props.Themid range is where the 1.7 shines and the extra tourque alows you to run more dia. and pitch.
If you have the ability to run the large props" gear Clearance"you will get a much better touque curve from mid to high throttle settings supper smooth transitions,
and the large dia. props will aid in the downline breaking.
For wind, the 18-12 is the best prop in my oppinion the motor has no trouble pulling it "even on an 11pound aircraft."
and it `s super quiet ,,, also you will not have the over reving problems ,,like with the smaller props ,,, it`s just wasted energy.
hope this helps.
Bryan
Hi Nickolas
It`s always fun to have new toys ,,is the CDIfor everyone ,,,No
it does have a big reduction in smoke ,I find tuning it is a little different, and takes some knowledge of the motor over time to understand it.
that being said it`s not hard to run consistantly, and it has a remarkable idle. which is much better for the airframe and servo wear.
You have to understand this motor was developed to be competitive againsttheelectric setups at a world stage. low smoke and thelarge dia props,=low noise,
these are long overdue refinements.
Right now to take advantage of the lightsmoke trail, you have to run a low oil fuel which may not be available in you area.
Most guys have settled on 10% oil. "Cool power" has this as their standard Low oil fuel,,,some are still having good luck on 5% oil But these guys don`t pay for repaires
and I would not recomend it for longevity reasons.you can run the regular heli fuel on the CDI but youwill have yournormal smoke trail.
If you can afford the weight gain aprox 120 grams" once youfactor the large props " and the c/g shift involved with the new set up,
it`s for you.,,however, if you continue to run 17-12 and 18.1-10(as these are 1.6 props ),you will recieve no benifits from the 1.7 or theCDI version 1.7on smaller props.Themid range is where the 1.7 shines and the extra tourque alows you to run more dia. and pitch.
If you have the ability to run the large props" gear Clearance"you will get a much better touque curve from mid to high throttle settings supper smooth transitions,
and the large dia. props will aid in the downline breaking.
For wind, the 18-12 is the best prop in my oppinion the motor has no trouble pulling it "even on an 11pound aircraft."
and it `s super quiet ,,, also you will not have the over reving problems ,,like with the smaller props ,,, it`s just wasted energy.
hope this helps.
Bryan
Target rpm for these please?? Around 7500 rpm???
Thanks again!
Nikos
PS: Will you be in Portugal with the team?
05-28-2009 | 06:34 PM
#40
RE: best propeller for YS 170DZ
Hi Nickolas
Yes Iwill be at the worlds as Brett Whickizers caller.
As far as the Heat! Humidity,,,I live in the deep South in the USA
and Iknow it well the props I recomended work fine in the heat.
someguysdo nothave enough opening in the cowling and cause the motors to run hot and vapor lock.
so I know your troubles LOL
Hope to see you in Portugal
Bryan
Yes Iwill be at the worlds as Brett Whickizers caller.
As far as the Heat! Humidity,,,I live in the deep South in the USA
and Iknow it well the props I recomended work fine in the heat.
someguysdo nothave enough opening in the cowling and cause the motors to run hot and vapor lock.
so I know your troubles LOL
Hope to see you in Portugal
Bryan
05-28-2009 | 09:37 PM
#42
RE: best propeller for YS 170DZ
</p>
Please keep in mind the 170 is the same, CDI or not, but if you run the low oil version, any percentage of oil you reduce you will gain in alcohol and nitro, for example, if you change from 23% oil to 10% oil a gain of 13% on methanol and nitro will happen, and that will increase the engine power.</p>
I read all posts where the engine performance is mentioned, but the fuel and the engine set up is the most important factor, but I don't see it much mentioned, as well as how the throttle curve changes with the prop selection.</p>
I really think even the engine can move a 19x11, It does not do it with the acceleration speed or throttle response/accuracy that has with the 17x13, the latest being the one I prefer, but I'm using 30/23 fuel, if I would change to 30/10 or a little more oil I would consider using the 19 prop, otherwise I would not.</p>
Most people think they can load an engine because the engine is powerful , without knowing exactly how is the engine actually being performing in comparison to well tune and set up engines. </p>
</p>
05-28-2009 | 09:57 PM
#43
My Feedback: (45)
RE: best propeller for YS 170DZ
Apiera, </p>
I have to disagree slightly with your statements about. While the CDI and no CDI are essentially the same engine, the CDI does allow for some differences. You can load the CDI version much more as the timing is advanced to optimize performance. You can run the CDI version in the lower 7000 range and still get optimum performance whereas with the non CDI you are loading the engine down more than is ideal. </p>
I am running the Cool Power 30/20 mix as my primary engine does not have the low oil conversion. I have very little smoke and couldn't be happier with the performance. I am turning the 19X11 between 7500 and 7600 and it has excellent transition. The transition is definitely better with the CDI with the much heavier props than it is on the non CDI setup.</p>
Arch</p>
</p>
05-29-2009 | 02:29 AM
#44
RE: best propeller for YS 170DZ
Looks like my buddies have answered most of your questions Nikos! I'm just disappointed Bryan doesn't know how to spell my last name by now! LOL </p>
I'm running my CDI unit on a lead straight from the reciever. One switch, one battery. Has worked great so far. </p>
05-29-2009 | 02:35 AM
#45
RE: best propeller for YS 170DZ
</p>
Arch,</p>
We have been flying the 170 glow version with the 17x13 with excellent results, installed the CDI on the same perfectly running engine with the 19x11, and Tuny's Passport flew like crap!!, I mean, no constant speed, accelerated much slower, and the aircraft was faster even if it had lost a lot of the vertical authority, swapped back to 17x13, and flew beautifully again. The propeller change was due to all this post where it has been stated the best propeller is the 19 for the CDI, in our opinion it is not a good choice. We run COll Power 30/23 and Power Master 30/23.</p>
Better transition, yes, better idle , well unbelievable idle I will say, but we do not fly at idle and transition is just that, the engines now behave the way we want, but again, is also a matter of taste, if you like the engine with the 19, I understand that's the way you fly and like the performance, but I also think that too many people read this posts, and some times people believe what they read, and not always is the correct analysis, so I have to expose certain parameters that have not been taken in consideration so all the people who are interested and what we all say can have as much information as possible to get to the right conclusions.</p>
Regards</p>
05-29-2009 | 03:13 AM
#46
My Feedback: (45)
RE: best propeller for YS 170DZ
Apiera,</p>
That really surprises me about your findings on the 19X11. It is by far the most consistent speed propeller I have flown on my CDI. I had similar results as you when I tried the 18X11WPN. I just flat out hated it. I have not flown a 17X13, but with my airplane choice (Black Magic) I have been throroghly impressed with the speed range of the 19X11. As you stated, it is definitely a matter of choice and flying style. I have also noticed a much broader speed range that the prop allows. It allows you to fly very slow and close if needed, but you can also push it out and fly faster if needed.</p>
As you said though, people need to try various props to see if they fit their flying styles and needs.</p>
Arch</p>
05-29-2009 | 08:48 AM
#47
RE: best propeller for YS 170DZ
OOPS !!
sorry Britt ,,
get used to it !
I`ve been in the Hobby for 30 years and everybody still spells my name
Brian Herbert <G>
Wickizer is such common name you would think I`d have it down ,,,
Heck ,I just figured out howto spell Shulman LOL
Brian
sorry Britt ,,
get used to it !
I`ve been in the Hobby for 30 years and everybody still spells my name
Brian Herbert <G>
Wickizer is such common name you would think I`d have it down ,,,
Heck ,I just figured out howto spell Shulman LOL
Brian
05-29-2009 | 10:38 PM
#49
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From: , ON, CANADA
RE: best propeller for YS 170DZ
Only slightly off the topic...how often are you guys changing plugs on the 170? Do you notice any performance difference as the plug ages?
Colin.
Colin.
05-29-2009 | 10:48 PM
#50
My Feedback: (45)
RE: best propeller for YS 170DZ
Colin,</p>
I wasn't changing plugs often. Basically if I noticed any change in the engine, rough idle or transition or it died for any strange reason, before I would adjust anything I would change the plug. I was running the YS plugs and was really happy with them. </p>
Arch</p>
