leekitai

Hi!!
Now, I cannot pick a good one out of the engine is
YS110FZ , OS120Surpass3 w/pump and Saito120.
What do you think about these engines?

Woody218

My Feedback: (24)

The YS 110 will outpull either the OS or the Saito. In fact, the YS is almost as strong, if not stronger, than a Saito 150.

Mettler1

The YS 110 is the engine to get if you want all out power. It also likes 20% nitro or better. The OS runs well on 10% nitro but is not as powerful as the YS. If higher nitro fuel is not a problem to buy get the YS. By the way I have an OS 120 Surpass III pumper and I really like it. The reason I picked it over the YS is that it is happy running on lower nitro fuel. Hope this helps.

Richard L.

My Feedback: (24)

I have both the YS 110FZ and the OS 120 Surpass 3 w/pump, and the YS 110FZ is a much stronger engine. It's also cheaper and very reliable.

seanychen

My Feedback: (4)

On 20/20 fuel, I'vetached that YS 110 and Saito 120 both turn the 16x4W prop @ 10k rpm. YS 110 may scale better w/ 30% nitro fuel, about +500 rpm w/ the extra nitro.

Another factor to consider is weight, size, and exhaust orientation. Is this for a scale project? Will you need 26 oz to balance or 32 oz? Will you need the exhaust to come out the side (YS 110 & OS 120), or out the back (Saito 120)? Will you have to enclose the engine w/ the cowl, as the YS 110 is about 10 mm shorter than the other 2?

Richard L.

My Feedback: (24)

Try taching both the YS 110 and the Saito 120 on smaller diameter, higher pitched props, such as 15x8 or 14x10 on 20% nitro. The YS is geared more toward spinning pattern props over 3D props.

tIANci

What I like about my YS110 is that even when its idling for a minute or so the engine will respond very well when you throttle up. I find the YS less fussy. I can get 10,200 RPM (max) on 30% heli fuel on an APC16x6, of course that is waaaaay too much for the engine but does show the potential. I got this feeling that my YS110 can turn an APC 17x6 at about 9,250-9,500 RPM.

I love my YS110 so much that I ordered the YS160 ... the YS are that good. Costly but they are nice. Great for coarse pitch props.

Harry Lagman

Their success in the marketplace has caused a problem - availability is the only real issue for the YS 110s. They have been difficult to find and some of us who have mail ordered them have been waiting for months.

Richard L.

My Feedback: (24)

That is true. You best bet is to keep an eye out for the YS 110 here in RCU Marketplace. You will get lucky if your timing is right. I just bought two new 110's here in the past couple of weeks

tIANci

Now we know why there are insufficient YS110 engines! He buys two immediately!!! Hehehe ... can't wait for my YS160 to arrive. Gonna be a blast looking for a plane for it.

joeb102072

My Feedback: (9)

I find that an issue too. While my YS 1.40FZ is sitting comfortably in my QQ Yak. I am desperatly seeking a 110 for my F90. I had to wait almost 3 months for my 1.40 and i dont want to wait that long again. keeping an eye on the market place is a second job.

Richard L.

My Feedback: (24)

Sorry about that Must ... resist .... buying .... more YS 110's.

I will try to quit cold turkey. It will be hard since the YS 110 is such a spectacular engine.

tIANci

I can't wait to see my YS160, heard its lovely. No pressurised tank and something about direct injection into the engine? Anyone can enlighten me? Sorry about asking this here.

joeb102072

My Feedback: (9)

Yep my LHS just got 6 of them in. All of the DZ line YS engines have a direct fuel injector in them they are the only ones the 140 DZ and the 160DZ. All the others use the pressure system. I dont know how that affects tuning but they are awesome looking. That also aids in their increased HP out put. The 140 sport puts out 2.7 while the rated HP on the 1.40DZ is like 3. I held a 160 the other day it was awesome and its huge in comparason to the 140 and 110. Theres also a lot of gadgets on it. he he

seanychen

My Feedback: (4)

The effect of the DZ system on tuning is that IT GREATLY SIMPLIFIES TUNING. There's no more idle screw to mess with. The injector diaphram screw is usually set correctly from the factory, so there is only the high speed needle to turn, and 2-turn out is a very good place to start for break-in. I'd take a DZ over FZ any day. It's just a matter of time before all the YS becomes fuel injected. I heard supposedly a 63 DZ is coming out soon. I definitely want a 110 in DZ form.

joeb102072

My Feedback: (9)

Sweet !! Thanks for the info I too would look forward to a DZ.

proulxlaw

My Feedback: (3)

Richard:
Does the YS110 have the same bolt pattern as either the Saito 100, OS 91 or Saito 91? I am going to get one for my GP Stuka and I was hoping to just take out the Saito 100 and drop in a YS110 without fussing with a new motor mount. I used the Saito mount for the 100 as it brought the 100 closer to the firewall than the GP adjustable mount.

tIANci

Seany ... the DZ ... what is the system all about? I thought it was some kind of fuel injection, what is the difference with the FZ? Why no pressurised tank? Thanks!

DUH~ You meant when ALL YS are fuel injected ... sorry I read it wrong!

skyhawk172n

My Feedback: (3)

joeb,
Please give us a rundown on the QQ Yak/YS140 sport. My son is putting the same combo together, and we would like to know how it works before we get it together. So far, it looks GREAT!

Thanks,
Roy

olstoney

My Feedback: (19)

I was trying to compare using a 110FZ on a 1.20 Wildhare Edge 540T at under 12# that I had on the shelf to the 140 Sport. RichardL knows as we discussed the issue and he bought my 110. The 110 would have flown the plane, but it just would not have had enough juice. I could have picked up a 140DZ but opted for the Sport why some would ask, simple the DZ requires 30% nitro to get that .3HP over the Sport and the DZ costs so much more. I didn't know this until I spoke with Dave Shadel at YS who also helped me make my engine choice. I have owned several Saitos and they are reliable user friendly engines. I still have an FA100 in my UCD 60 and it is a good combination. It will however be replaced with a YS when the bearings go.

Build-n-flyer-RCU

My Feedback: (4)

Flieger A-

The bolt pattern for the YS 110 is identical to the Saito 100. The firewall spacing is very close, with the YS requiring just a tad more room at the rear. I was able to make the swap in my 60-size extra in less than an hour.

Depending on whether the Saito throttle linkage is set up stock or at the center (reversed) you may have to reposition the throttle pushrod. I had my Saito reversed so I just needed to install a new throttle rod with a little bend in it in the existing throttle rod tube. Also, if the Saito head extends through the cowl then some surgery would be needed to it. Including the air tank the YS head is bigger, also the exhaust location is different than the Saito.

Walt

PS the YS110 absolutely rules- there is no comparison to the Saito 100! Awesome power, great throttle response, reliable idle, no deadsticks, less fuel consumption, and a great Harley sound running a straight pipe.

proulxlaw

My Feedback: (3)

Awesome! Thanks for your help. The LHS has one and I think and I will try to snag it later today. Don't ask me where the LHS is. This one's mine.

Bob

Richard L.

My Feedback: (24)

Flieger A, the YS 110 has exactly the same bolt pattern as the Saito 100 and OS 91, but not the Saito 91.

Here are the specs for the YS 110 and Saito 100:

* Side to side distance between mounting holes: 52mm
* Front to back distance between mounting holes: 25mm
* Distance from front mounting holes to drive washer: 57mm

The only difference for the OS 91:

* Distance from front mounting holes to drive washer: 54mm

The differences for the Saito 91:

* Front to back distance between mounting holes: 21mm
* Distance from front mounting holes to drive washer: 55mm

Richard L.

My Feedback: (24)

Totally agreed

joeb102072

My Feedback: (9)

Flieger,

Nice to see you here on RCU I didnt know you too were browsing the forums. Its was good to see you at the fun fly this weekend too bad you didnt get to bring your warbirds. I recognized the field and you in the picture I was like hey that looks like beattie. Then I saw you and I said hey I know that guy. Anyway PM me and let me in a the little secrete as to what LHS has the 110's in. I promise I wont buy yours. But if they get them in sooner than otheres I want to keep in touch. I am looking for one for my Funtana 90.

Also I think you know this already but there are a few of us that fly YS's at the field if you have any questions dont hesitate to ask. Chris, was there this weekend and he is the YS guru. Theres nothing he doesnt know about them. I wait for him to get to the field every weekend to listen to my new YS engines before i fly them. He has such a trainned ear for them its unreal. And when it comes to trouble shooting them he is 99% correct at all times.