full throttle

Saito 180 vs. YS 140 FZ for torque and power. I hate to spend the extra $$ for the YS if it does not provide the extra umph to justify. I would like to use a YS in a four stroke 1/4 scale project.

If yes, what kind of expectations should I expect? (i.e.: prop size, rpm, hp rating, engine wieght...) How much more performance does the new DZ have over the FZ?

BTW: How does the YS 140 compare to a OS 160? I have a couple of 1/4 scale 2 stroke planes but no four strokers.

Thanks for the help,
Chris

lnorris

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Jim Schwagle

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YS 140DZ Fuel consumption is about 1.75 - 2 oz/min. 3.2 HP. Prop 15-14 to 17-12 or any prop that turns 8000 - 8500 on the ground. See www.ysperformance.com, select the FAQ section.

lnorris

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edgeguy

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Most guys with YS120's are running a 16X8 also with rpms in the 9000 range.

My YS 120fz with a Pro Zinger 16X8 and YS muffler is turning 9200 rpm on the ground and the altitude here is 6200feet.

Doesnt sound like the Saito 180 has much power to me if they are only turning 300 rpm more than a YS 120 with the same size prop.

Just my opinion

Jim Schwagle

My Feedback: (1)

Not to beat a dead horse, but I think it's the fact that the YS120, 140 et al are very powerful engines based on their design. The Saito 180 is what it is, average for its displacement. As to price, I've never used them but check out www.heli-kraft.com. I think they are off-shore but some heli guys have used them and say there's no reason for complaint. 140DZ for $400.

Skymac

My Feedback: (8)

Hey,

I have found that a Mezlik 18x6 on a YS120 will turn 9400R's at top end on 20/20 fuel. No difference on 30% other than pulling power.

-Justin

outssider

My Feedback: (23)

depends on what plane... and what you intend to do with it...

ys has more precise transition ...but costs more $$ .....top end power is close to the same using the same fuel

Ladyflyer

My Feedback: (2)

It only costs a few dollars more to go first class
The smaller more powerful and far more efficient YS puts out quite a bit more power than the Saito 180.
The YS 140 also is blessed with a much lower vibration level than the larger displacement Saito.

full throttle

Hey thanks everybody for your input. Out here in SW Kansas, no one has yet to buy YS in the flying club. The club is only about 6 yrs old. Looks I'll be the first to get one. Its going in a H9 Edge 540 or Sig Cap 232. Just thought I would ask ya'll what to expect.

Thanks again for all your help.

Chris

Rudeboy

I don't know exactly about engines prices over in the US, but here in Belgium the YS 140 L costs 635 euros without muffler, and a Saito 1.80 costs 525 euros with muffler. Euro is about the same as dollars.

What I'm trying to say is this: if you don't really, really need that power the Saito is a good choice.

If you're going into F3A on the other hand, you need all the power you can get.

Ladyflyer

My Feedback: (2)

The difference over here is even larger.
The Saito could be even cheaper than what they sell it for .
I'm sure The Saito distributor is working on a much larger profit margin than the YS distributor. The YS is a much costlier engine to make and the Saito is sold in much larger numbers than the YS . With a simpler ,cheaper design and the economy of scale Saito is in a position to lower prices or go for all the market will bear. And they do. YS has to operate on a much smaller margin . They put out a great engine for the money.
(Not a criticism ,just an observation)

lnorris

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JohnW

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Inorris... that web site has really good prices... but it makes me nervous. Nowhere do they indicate where they are from, only contact info is email only. Items all listed in USD leads me to believe like you they are off shore (for us folk in the US anyway.) I assume if they are legit, there would be customs/importer fees when shipping to the US. That could make a big diff in price. Has anyone purchased something from this place? Is it for real?

What sold me on the YS140 (I have a couple of L's) was throttle response. Nothing spools up like a YS.

foxxy

My Feedback: (1)

how about those dependable and well priced enyas?

maverick

My Feedback: (12)

I also was impressed with the prices but nervous about the lack of physical contact details such as address on the web-site.

So I did a bit of research and it turns out that Heli-Kraft is actually in Belize. That, combined with the lack of details on the website has meant that I am going to give them a miss.

Rudeboy

Since their site shows interesting prices I sent a mail to their sales department to ask from where and how they operate...this is the response I got:

Hi,

We are based and registered in Belize but most of the orders are shipped
from Asia, places like Hong Kong, Taiwan and Japan. We usually ship the
items from the same country they are produced in to get the best prices.

Cheers,

John




Seems to me they are just operating via the internet, and only acting as an intermediary, thus with very low costs. Therefor they can survive on a very low profit margin. He doesn't actually "handel" any good himself. I wouldn't be surprised if this is a one-man operation...

can773

My Feedback: (1)

YS Performance is the sole distributor over here, I beleive that they are now marking their engines so as to identify those which are bought offshore. Those that are bought offshore will not be warrantied in North America. Just an FYI

lnorris

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can773

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I think that is "inversely proportional" to the users experience with YS motors

Rudeboy

I beg to differ...eventually every IC engine will need maintenance, wether it is a Yamada or a 8 cilinder marine diesel engine.
Maybe one engine will have a longer TBO then the other, but they all wear out eventually...

deputydog

Unless you have a problem that you cant solve, you can do all the maintenance yourself. Here in the US we have Central Hobbies which shows parts breakdown for the YS motors and you can order any part needed. Many times I've ordered gaskets or O rings. BUT.... The YS parts are expensive. This is largely due to Import fees and the world market yen vs usd.
Its really hard to believe this Belize front would sell a Dingo for just over $400. Sounds to me like the 140 sport price. And dont forget to order a Big Mac, they are 700 or so yen( thats $7 usd!!!)

Traxxas_Tech

My Feedback: (22)

Im Curious now, whats the difference between the DZ 140-M, and the plain DZ 140?


As for the YS versus Saito, I greatly prefer YS. They vibrate less, have better fuel efficiency, throttle response, are more compact, sound better, and just plain look meaner than a Saito.

I am glad I learned about the DZ from Heli-Proz, Im going to look into getting one... Thats a heck of a price, if the import fees dont kill me, I can do the repairs/maintenace on it myself.

Hobbsy

My Feedback: (102)

Coulter, A friend and I have been studying the YS 140s, I went to the Yamada website and it appears like there is a 140DZ and a 140 L, the DZ has a fuel pump and a regulator on the intake pushrod tube and a fuel injector sitting atop the intake valve, the 140 L has the regulator below the crankshaft and uses tank pressure as the other YS's do. I did not see the M, the DZ does not pressurize the tank but has a plunger pump operated by the intake pushrod. The DZ tank is vented to the atmosphere.

Traxxas_Tech

My Feedback: (22)

Yes, I am familiar with the 140FZs, Ls, and DZs, but the DZ-M is new to me....


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