re ys 1.20

[Bob Kane]

The L and DZ versions are both monsters in the power department, but can be tricky to adjust properly, and less tolerant of operator error. When set up correctly they are great. The reason I put the FZ's on the top of the list is good power and ease of setup.


Bill Glaze <billglaze at triad.rr.com> wrote:
The Y.S. 1.20SC was an absolute struggle for the second year I owned it.  First year, it was great.  Neither the factory or I, or several real Y.S. experts could get it right Finally traded it in for a 1.40 FZ. 
I now own 4 of them.(1.4FZ's) 
The original 1.20 FS is one of the best engines I have ever owned; I still have 2 of them, and use them regularly.  Will be putting one of the1.20's in a new Swallow I got from Ron van Putte. 
A pattern flyer friend (and TOC competitor) has run 130 gallons of fuel through his 1.20 FS with no problems. (And that was at last count!) Probably a record of some sort. 
No experience with the newer 1.20's or the DZ.  My 1.40L has started out like the 1.20SC revisited.  We'll see. 
Bill Glaze 
  
"Thomas C. Weedon" wrote:  Hey, Bob, I will have to agree with most of your conclusions except the 120NC. I have two 120NC's. They are not as powerful as the newer models, but they are easy to run and so far, very reliable. I have only done the minimum maintenance on then. Great for sport engines. I got rid of my SC's. They were the worst of all YS engines. I also agree that the YS120FZ will suprise most with it's power and ease of use. I have 2 of them and won't give them up. The 140FZ is great also.Tom Weedon -----Original Message----- 
From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]On Behalf Of Bob Kane 
Sent: Saturday, May 17, 2003 3:58 PM 
To: discussion at nsrca.org 
Subject: Re: re ys 1.20 
 
Best to worst big YS four strokes IMHO, in terms of reliability and ease of use: YS120FZ YS140FZYS120ACYS120FSYS140L  YS140DZYS120SCYS120NC I own or have owned the 120NC, 120FZ and 140FZ motors, and have direct experience with the L and DZ series. Of the 120's, the FZ is the best version. My 120FZ is as strong as my 140FZ's. The 120NC I owned was junk, even two trips back to YS and several versions of throttle barrels did not make it right. Some people have good luck with them, I did not. The AC is good, but not as powerful and heavier. The SC is powerful, but has a tendency to eat itself without warning. The older FS motors are good, just not on par with the newer ones in terms of power. If you are shopping, pick up either a 120FZ or 140FZ. Lots of fliers are moving to the big two-strokes or YS140DZ's, so finding one should be relatively easy.  
S & A North <sanorth at shaw.ca> wrote: HI   any chance someone could list in order best to worst version of ys 1.20 to buy.i do not know the diff between a nc fs fz.can anyone enlighten me please?thanks.........shel
Bob Kane 
getterflash at yahoo.com 

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Bob Kane
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