RCU Forums

RCU Forums (https://www.rcuniverse.com/forum/)
-   RC Pattern Flying (https://www.rcuniverse.com/forum/rc-pattern-flying-101/)
-   -   YS-170CDI Flight Report (https://www.rcuniverse.com/forum/rc-pattern-flying-101/7528653-ys-170cdi-flight-report.html)

Jeff Boyd 2 09-20-2008 07:15 PM

RE: YS-170CDI Flight Report
 


ORIGINAL: atul123



ORIGINAL: Jeff Boyd 2

Great points . . The 170CDI would not typically be used in a 'Sport' style airplane (we can spec other sizes and type of engines to perform well in Sport planes with out the expense of a YS170CDI). As Atul mentioned, Giant scale and Pattern (which is really ONLY where you would use a 170CDI) are totally different animals. Only a Giant Scale pattern plane would fly anything like a pattern plane ;). Giant Scale aeros fly great, but they aint no Pattern plane ! We choose our weapons :D

Cheers, JB
JB - speaking of a "maching plane" for the 170CDI, can you suggest one? The Focus 2 is an option but what are the others? And where can we get them? Any pointers would be appreciated.

Atul
Sorry Atul . . I don't really understand your question . . what is a "Maching plane" ? If it's "matching plane" for the 170CDI . . I would think any 2M plane on the market designed for GP.

Cheers, JB

Patterndude1 09-20-2008 09:24 PM

RE: YS-170CDI Flight Report
 
I am electric, but this is very impressing. I love this engine.


Matthew Liprie

papaone 09-21-2008 02:15 PM

RE: YS-170CDI Flight Report
 
Hi Atull

Be carefull to your choice to avoid to be over limit of 5 kg, cdi is a little heavier than normal Yamada 170.
I did a mistake about % oil. I saw Steph Carrier's father this morning. He told me there is 6 % oil and not 5 or 7 %. I'm very confused !!!
But % nitro is good. It is 20 %.
Regards



Don Szczur 09-21-2008 08:22 PM

RE: YS-170CDI Flight Report
 
The fuel economy is great. I flew an entire contest this weekend which included two warm up flights Friday (consisting of 2 seqences each plus a few maneuvers), four P09 rounds yesterday and two P09 rounds today on one half gallon of fuel.

I'm running a mixture of 3/4 Cool Power 30% nitro 5% oil, and 1/4 of 20% nitro heli fuel. There were many positive comments about the engine this weekend- presentation against the cool blue sky with little or no oil trail, power, smoothness and consistence- and easy starting each round.

All the best,
Don

mark nichols 09-22-2008 02:15 PM

RE: YS-170CDI Flight Report
 
Hi Guys, i have a great planes 81" yak 54 and it needs an os160 i would love to try a dz170 on a 21X10 prop would this engine power this plane. I already have a gas powered qq yak so would like glow thought of os 200 but to heavy.

Mark

MTK 09-23-2008 08:13 PM

RE: YS-170CDI Flight Report
 

ORIGINAL: Don Szczur

The fuel economy is great. I flew an entire contest this weekend which included two warm up flights Friday (consisting of 2 seqences each plus a few maneuvers), four P09 rounds yesterday and two P09 rounds today on one half gallon of fuel.

I'm running a mixture of 3/4 Cool Power 30% nitro 5% oil, and 1/4 of 20% nitro heli fuel. There were many positive comments about the engine this weekend- presentation against the cool blue sky with little or no oil trail, power, smoothness and consistence- and easy starting each round.

All the best,
Don
So that's around 9% oil, correct Don? And around 27.5% nitro

MattK

preatorian 09-29-2008 04:59 AM

RE: YS-170CDI Flight Report
 
Hi all,
very interesting result for 170 cdi ! Does anybody know where can I order this engine with the ignition system?

Best regards

atul 09-29-2008 05:21 AM

RE: YS-170CDI Flight Report
 


ORIGINAL: preatorian

Hi all,
very interesting result for 170 cdi ! Does anybody know where can I order this engine with the ignition system?

Best regards
The engine has not been released in the USA and for now not even in Japan. The Japan release is expected in 2 months but Yamada is always late (this information is from dealers in Japan).

The factory told a friend of mine that the best thing to do is place an advance order with a hobby shop in Japan. Most hobby shops there do not need any advance payment but are taking orders. Trouble is, you need someone that speaks Japanese - either yourself or a friend, etc.

I've placed my order already :D

Atul



Don Szczur 09-29-2008 08:13 PM

RE: YS-170CDI Flight Report
 
Yes about 9 percent oil, and I run it rich. The engine smokes some on takeoff after its idled for a while but in the air its really not noticeable.

Regards,
Don

Charley 09-30-2008 02:16 PM

RE: YS-170CDI Flight Report
 

ORIGINAL: MTK

So that's around 9% oil, correct Don? And around 27.5% nitro

MattK
I've converted several glow engines to ignition, even run one (Saito 1.50) on gas. In general, larger engines can run less oil, glow fuel or gas. Also, with spark ignition engines running methanol perform well on less nitro content than they need on glow ignition.

My experience with YS engines told me that they transitioned better on higher nitro content but with ignition this is usually not so critical. So why the high nitro content? There's certainly not any saving on fuel cost.

CR

preatorian 10-07-2008 02:21 AM

RE: YS-170CDI Flight Report
 
Has anyone tested YS with mueller-modellbau-technik electronic ignition?

http://www.mueller-modellbau-technik.de/

Regards

J Lachowski 10-07-2008 06:58 AM

RE: YS-170CDI Flight Report
 


ORIGINAL: Charley


ORIGINAL: MTK

So that's around 9% oil, correct Don? And around 27.5% nitro

MattK
I've converted several glow engines to ignition, even run one (Saito 1.50) on gas. In general, larger engines can run less oil, glow fuel or gas. Also, with spark ignition engines running methanol perform well on less nitro content than they need on glow ignition.

My experience with YS engines told me that they transitioned better on higher nitro content but with ignition this is usually not so critical. So why the high nitro content? There's certainly not any saving on fuel cost.

CR


Charley, its all about performance in pattern. You can never have enough power<g> From what I've seen they run smoother and burn less fuel than the standard glow version. Then again, I fly electric<g>

Charley 10-07-2008 11:50 AM

RE: YS-170CDI Flight Report
 


ORIGINAL: preatorian

Has anyone tested YS with mueller-modellbau-technik electronic ignition?

http://www.mueller-modellbau-technik.de/

Regards
I don't know but I took a look at the single-cylinder unit - thanks for the link. Considering the monetary exchange rate, that thing is expensive! [X(]

CR

slava 10-07-2008 03:29 PM

RE: YS-170CDI Flight Report
 

Charly, look at this http://www.justengines.unseen.org/ac...s.html#aJW2014

I used it to convert 110s. Runs great on 5% nitrro, smooth transition,some fuel economy.
& a price is not so bad!

Rostislav

BTerry 10-07-2008 05:21 PM

RE: YS-170CDI Flight Report
 
Slava, that is great. I assume the power is similar as well? The switch to 5% is reason enough to try that. Did you just drill a hole in the hub for the sensor magnet?

Charley, CH Ignitions has been converting glow engines for over 20 years, and they have a good conversion ignition that is much less expensive.

slava 10-07-2008 06:16 PM

RE: YS-170CDI Flight Report
 
Terry
The power is similar to when I was running 15% glow, & some what less than 35% I run latelly.
Hub is just big enogh to take 3mm magnet , mounted sensor with a plastik tierap holds good , & I can adjust timing.

Rostislav

BTerry 10-07-2008 11:06 PM

RE: YS-170CDI Flight Report
 
That sounds great. As long as the tie wrap doesn't allow the sensor to slip you should be OK. I was thinking of converting a YS 1.20 I have but was unsure how to secure the sensor, and don't want to mount an internal magnet as in the 1.70 conversion.

Charley 10-08-2008 10:19 PM

RE: YS-170CDI Flight Report
 


ORIGINAL: BTerry

Charley, CH Ignitions has been converting glow engines for over 20 years, and they have a good conversion ignition that is much less expensive.
I'm aware of this. The ignitions on my Saito 1.50 and SuperTigre 3000 are from CH.

CR

preatorian 10-13-2008 04:12 AM

RE: YS-170CDI Flight Report
 
What is the maximum percentage of nitro that can handle the cdi plug?

slava 10-16-2008 01:14 AM

RE: YS-170CDI Flight Report
 
When I just did my convertion I run 35% nitro for couple flights to see if I lost power .
Didn't affected plug any how ,nitro % shouldn't be a problem

Charley 10-16-2008 10:36 AM

RE: YS-170CDI Flight Report
 


ORIGINAL: slava

When I just did my convertion I run 35% nitro for couple flights to see if I lost power .
Didn't affected plug any how ,nitro % shouldn't be a problem
How about trying it on FAI fuel? Have you kept a record of RPM? Might have to adjust the timing a little.....

CR

slava 10-16-2008 02:28 PM

RE: YS-170CDI Flight Report
 
I didn't try FAI fuel, just 5%. I wouldve but don't have it avail.
On 5% it was turning 15x8 at 9300rpm. & 16x8 at 9500 on 35%

Charley 10-16-2008 07:08 PM

RE: YS-170CDI Flight Report
 

ORIGINAL: slava

I didn't try FAI fuel, just 5%. I wouldve but don't have it avail.
On 5% it was turning 15x8 at 9300rpm. & 16x8 at 9500 on 35%
Isn't that something? All that nitro for 200 RPM.

CR

rcpattern 10-16-2008 08:58 PM

RE: YS-170CDI Flight Report
 
200 RPM on a larger prop if you read above. That is quite a large difference..

Arch

Charley 10-17-2008 09:17 AM

RE: YS-170CDI Flight Report
 


ORIGINAL: rcpattern

200 RPM on a larger prop if you read above. That is quite a large difference..

Arch
It would mean more if we knew the 16x8 RPM with 5%.

CR


All times are GMT -8. The time now is 05:05 PM.


Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.