RE: Does Saito have more torque than YS??  
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RE: Does Saito have more torque than YS?? - 3/20/2006 3:28:19 PM   
MOTORMAN37



Posts: 2091
Joined: 10/26/2002
From: CLINTONVILLE, WI, USA
Status: offline 		When I first started flyin my YS, I had a few guys at the club who looked at it and then walked away. I even had one guy that said he did not like the way it idled. I asked him what do you mean, he told me "it is to dam slow". The moral to the story is that the two guys who looked at it now to also own YS's, and they normally flew saito 1.50's and 1.80's.

(in reply to MOTORMAN37)
       Post #: 51

RE: Does Saito have more torque than YS?? - 3/20/2006 3:41:39 PM   
TimC



Posts: 2257
Joined: 1/7/2003
From: Lone Pine, CA, USA
Status: offline 		Motorman37, my YS never run right until I messed with the regulator. I think maybe it's this third adjustment that causes most problems with folks used to two needle carbs. In my case, when I followed the directions at the YS web site exactly, and quit trying to re-invent the YS engine, my problems went away.

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       Post #: 52

RE: Does Saito have more torque than YS?? - 3/20/2006 3:50:42 PM   
MOTORMAN37



Posts: 2091
Joined: 10/26/2002
From: CLINTONVILLE, WI, USA
Status: offline 		A 1.10 is very easy to adjust. First you run it up WOT and adjust you high speed. Second pull it down untill 2,000rpm. While it is at 2,000rpm adjust your low speed. Run the the rpm's back up to WOT slowly. The smoke should get gradually more as it comes off of the idle circut. If it does not get slightly richer comming off idle open regulater a very small amount., and repeat. When you have the transition the way you like it double check the high speed. Thats it. The importance of having the engine at 2,000 rpm when adjusting idle mixture is that the idle is airblead. As you advance the throttle off of idle, the engine transitions on to the pressureized fuel delivery, and that is were you will see it start to smoke more and more as the trottle opens up. Once you understand how it works, and you think about how the adjustment will affect the engine before you do it, it is very easy. In the end you will have an engine that will stomp the Saito 1.25 with out even breaking a sweat. Heck my 1.10 was turning a 16-6apc at 9,400-9,500 on the first tank running 165 Degree's F. It was not even working it was running so rich.

(in reply to MOTORMAN37)
       Post #: 53

RE: Does Saito have more torque than YS?? - 3/20/2006 4:03:26 PM   
MOTORMAN37



Posts: 2091
Joined: 10/26/2002
From: CLINTONVILLE, WI, USA
Status: offline 		Tim,
My engine was running awesome when I thought I could just open the regualter a little. I then chased it with a few quick needle changes and I had it all messedd up. I went and sat down and thought about what I had all changed. I then went back and undid all the adjustments, and readjusted the correct way. I agree with you Tim, it is the third adjustment (reg) that throws some people for a loop.

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       Post #: 54

RE: Does Saito have more torque than YS?? - 3/21/2006 4:34:28 AM   
Ed Cregger



Posts: 7745
Joined: 1/31/2002
From: Ringgold, GA, USA
Status: offline
quote:

ORIGINAL: MOTORMAN37

When I first started flyin my YS, I had a few guys at the club who looked at it and then walked away. I even had one guy that said he did not like the way it idled. I asked him what do you mean, he told me "it is to dam slow". The moral to the story is that the two guys who looked at it now to also own YS's, and they normally flew saito 1.50's and 1.80's.



----------------


Eventually it will malfunction. When that happens you may as well buy another engine, since no one can fix them most of the time.

Yeah, yeah, I know some of you have fixed yours. Your turn is coming when you can't fix it because you can't figure out what is wrong with it. Then the parts will become nearly unavailable. Oh, they will list the parts, they just don't have them in stock at the moment - in perpetuity. They are very expensive paper weights. BTDT



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"Flying models since the Fifties - I'll get the hang of this yet!!!"

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       Post #: 55

RE: Does Saito have more torque than YS?? - 3/21/2006 5:52:27 AM   
Build-n-flyer-RCU



Posts: 1049
Joined: 9/26/2002
From: Evans, GA, USA
Status: offline 		There are two things that get us YS guys "started" in these threads. The first is when someone comes up with a statement like "my Saito 100 is just as strong as a YS 110" which is really silly. The second is when someone says that YS engines are unreliable or hard to tune which is just plain wrong. I am currently flying a 91AC, two 110FZ's and a 160DZ. All of them ran great right out of the box with minimal break-in required. I set the high speed needle just like any other 4-stroke and get an ultra-reliable idle as long as the low end and regulator are set even close to right (as in not too lean). Heck, the DZ doesn't even HAVE an idle adjustment needle.

Sure sometimes folks get "problem engines" and I am sure that YS is no exception, but I've yet to see a "problem" YS engine at our field. Plumb the fuel lines right, use the right fuel, and go fly.

As for service, yes the YS forum is pretty busy but YS engines are different and quite complicated so that's to be expected. And from what I've seen, with some rare exceptions just about everyone that sends a YS engine in for service seems to be very satisfied with the results.

Yes they are expensive, availability can be a problem, they require high-nitro fuel, and setup is a bit different. But over-rated power and/or poor reliability? Come on... let's not go there...

Walt

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(in reply to Ed Cregger)
       Post #: 56

RE: Does Saito have more torque than YS?? - 3/21/2006 11:43:32 AM   
Ed Cregger



Posts: 7745
Joined: 1/31/2002
From: Ringgold, GA, USA
Status: offline 		I believe they call that inexperience. I bought my first YS in the early eighties.

If you're flying competition, you didn't have a choice for anything but YS for a long time. I haven't kept tabs of what is going on lately, so I'll not try to play expert in that field. I just know that I have seen really good pattern folks move a particular engine to the back of the spares line because even though it worked right for a year or two, they couldn't get it straightened out the last time it broke. Not many pattern experts will admit to this, but you know who you are and I know that you are out there, even if I don't know your name.

Why/how does this happen? Sometimes it doesn't. When the importer of the day knows their stuff and they work hand-in-hand with YS, life is good. But that is only been about half of the time over the last couple decades and a half. The "problem", if you want to agree that it is a problem, is that these engines require a lot of technical knowledge to keep them running properly over time. You need a good importer that is really knowledgeable. This is not always the case. No, I am not commenting on the current importer.

Do I dislike YS engines? No way. But sport flyers should be aware that these are entirely different critters than OS, Saito and Enya engines. You wouldn't drive a Ferrari to work and to the supermarket, would you? Most sane people would not. <G>


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Artisan

"Flying models since the Fifties - I'll get the hang of this yet!!!"

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RE: Does Saito have more torque than YS?? - 3/21/2006 12:24:10 PM   
jlkonn



Posts: 1255
Joined: 1/2/2003
From: Planet Earth, IA, USA
Status: offline 		Gee Ed,

If I were you I wouldn't buy anymore YS motors...
Then you're problems are over, no?
JLK


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RE: Does Saito have more torque than YS?? - 3/21/2006 12:55:21 PM   
MOTORMAN37



Posts: 2091
Joined: 10/26/2002
From: CLINTONVILLE, WI, USA
Status: offline 		First to answere ED, yes I would drive a Ferrari to the store if I had the money and wanted the most performance possible. My second statement is backing up Buil-n-flyer-RCU. Who ever started this thread asking which one has more torque must have been looking for a showdown. The answere is absoulutly not. The numbers are about 800-1,000 or more RPM off just like they are with other YS engine size comparisons made so far. This thread was not started to sling Bu****** about YS engines from people who for the most part seem to have no idea what they are even talking about especially when it comes to YS'S. If people would just follow the instructions, plumb it the way the instructions tell you, and run the fuel that is recommended there has never been a problem in any YS that I have ever seen either. A YS is not a beginners engine. I think if you really checked most problems are related to total lack of experience, and inability to read and follow instructions. To answere to the question again.

The YS is far more powerfull than the Saito.

< Message edited by MOTORMAN37 -- 3/21/2006 12:56:35 PM >

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RE: Does Saito have more torque than YS?? - 3/21/2006 1:54:09 PM   
Hobbsy



Posts: 10683
Joined: 12/2/2001
From: Colonial Beach, VA, USA
Status: offline 		The YS is far more powerfull than the Saito.

This is getting better all the time, a few posts ago the the 1.10 was 700 to 800 rpm more powerful and now it is 800 to 1,000, I luv it. I don't think I can wish that kind of extra RPM from my 1.25 overnight. It woul be nice though.

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RE: Does Saito have more torque than YS?? - 3/21/2006 2:08:13 PM   
MOTORMAN37



Posts: 2091
Joined: 10/26/2002
From: CLINTONVILLE, WI, USA
Status: offline 		Torque Wrench,
The YS is quite a bit more powerful, the basic numbers do not lie. Anyone who thinks that the Saito is just as powerful, can I have some of what ever you are smoking because it sure seems to be some good hallucinogenic stuff.

(in reply to Hobbsy)
       Post #: 61

RE: Does Saito have more torque than YS?? - 3/21/2006 2:14:21 PM   
MOTORMAN37



Posts: 2091
Joined: 10/26/2002
From: CLINTONVILLE, WI, USA
Status: offline 		A 1.10 will spin a 16-6 in the high 9's very close to 10,000, and a 15-8 Graupner at about 9,500 and these meausrements are with 20-20. The point is there is huge difference in rpm's, far over 500, and you know your self that is quite abit power wise. Now take these numbers and make your own conclusions.

quote:

ORIGINAL: torque wrench

The YS is far more powerfull than the Saito.

This is getting better all the time, a few posts ago the the 1.10 was 700 to 800 rpm more powerful and now it is 800 to 1,000, I luv it. I don't think I can wish that kind of extra RPM from my 1.25 overnight. It woul be nice though.



< Message edited by MOTORMAN37 -- 3/21/2006 2:18:22 PM >

(in reply to Hobbsy)
       Post #: 62

RE: Does Saito have more torque than YS?? - 3/21/2006 2:23:01 PM   
Hobbsy