ScottMcM

My Feedback: (66)

I'm eyeing a plane to purchase, that the owner says has a YS 1.80 4-stroke engine. I can't seem to find anything on a 1.80....is there such an animal?

Hobbsy

My Feedback: (102)

http://www.keimod.com/shop/product_i...roducts_id=681

How about a 1.75, close enough?

ScottMcM

My Feedback: (66)

I found the 175, but thanks. I think I need to check with the seller, and ask him to double-check.

SrTelemaster150

I like that [link=http://www.philshobbyshop.com/catalog/viewsku?sku=YSE0018]YS175cdi methanol engine[/link]

Saito should take a page from that book & offer high compression CDI versions of the medium & big block singles as well as all of the multies. And utilize an inexpensive hall sensor triggered CDI, not that inductive crap.

ScottMcM

My Feedback: (66)

I have found that the engine is a 140FZ. What kind of performance should I expect on a 10 pound airframe?

SrTelemaster150

How about unlimited?

I've had FA150s on 16# airframes & it was pretty impressive.

How are you planning to stuff a pumped 140 4c into a 10# airframe?

Do yourself a favor & get a CDI on that thing ASAP.

ThumbSkull

My Feedback: (57)

FWIW, the 1.40 YS is at least as strong as most other 1.80's.

ScottMcM

My Feedback: (66)

The seller took care of that for me. It is supposed to be on the nose of a Dave Patrick 1.20 size Ultimate I guessed at the 10 pounds, because the specs for that plane say 9.5 lbs.

Jim Schwagle

My Feedback: (1)

I have the same engine, same aircraft. Although Patrick says 10#, I would check it, when you get your hands on it. Most people found the plane a little heavier than quoted, however the 140 hauls it around with authority and will hover around 60% throttle. The 140 is not pumped, it has a pressurized fuel system. First thing to check is that the fuel tank and lines are absolutely pristine. Although it will run in 15%, the more nitro you give it the better it likes it as the needle develops a broader tuning range and it develops more power. The YS importers recommend 20/20 fuel and I have used 30% heli fuel.

ScottMcM

My Feedback: (66)

I finally got to the bottom of this. The engine is a 1.40DZ, which I believe is a pumped engine. I went ahead and pulled the trigger and bought it. I hope to pick it up this week. At the very least, it should be "interesting flying".....

ThumbSkull

My Feedback: (57)

The 140DZ is better yet. Will spin an 18x6 JXF or Xoar at 8600+RPM still a bit rich.
That's a good 3-400 RPM better than the 140L or sport or Saito 1.80.

Jim Schwagle

My Feedback: (1)

Yup, the DZ is a step up from the FZ or Sport and is pumped. On the Patrick Ultimate it should provide all the power desired.

SrTelemaster150

I have a Saito 180 that will blow it away. I'll bet it would run right W/the YS175cdi. 8850 W/a Dynathrust 18 X 8.

ThumbSkull

My Feedback: (57)

That's not off the shelf performance like the YS is. I've had two Saito 180's and they are great engines just not on the level of YS 140 performance unless you modify it.

SrTelemaster150

You are right, but probably less invested than W/the (new) for big bore carb & CDI. $280 + $440 for a new 180B engine. $720 total & it will use less fuel than the glow ignition YS & impecible manners.

Actually I had far less than $440 in the engine itself. ($347.75) I had a clapped out neglected/abused FA150 from which I used the case, cam, pusrods, rockers, etc. I used it as a basis for the [link=http://www.rcgroups.com/forums/showthread.php?t=1754616]HIGH COMPRESSION FA180 PROJECT.[/link]
I am so pleased W/the outcome that I'm going to go reduce the case deck on the stock FA180 that I have to get the same results.

Heck it uses 20% less fuel than the stock FA180!

Here's the 1st prototype W/the stock FA180 carb on 15% Cool Power.
[youtube]http://www.youtube.com/watch?v=5xaiAR8Yelc[/youtube]

I'd bet that YS11140DZ won't flip start & idle like that. Although CDI would tame it down a lot.

I've managed to get [link=http://www.rcgroups.com/forums/showthread.php?t=1769449]SIGNIFICANT POWER IMPROVEMNTS[/link] since this video was shot. The 220 big bore carb picked up 400 RPM & 30% nitro got another 400 RPM. There's 9000 in it W/some better (pressurized) fuel delivery & tuning, it was surging to 9000.

ThumbSkull

My Feedback: (57)

You made my point. It's not off the shelf performance. I typically don't fly in the garage either.

ScottMcM

My Feedback: (66)

What fuel do you guys suggest I use in the YS? I have Saito, OS, and Magnum 4-strokes, but this is my first YS.

Hobbsy

My Feedback: (102)

YS suggests 20/20 all synthetic.

ThumbSkull

My Feedback: (57)

Main thing is 20% oil. I like 30% Nitro. All synthetic. I run this in all my 4-strokes. Saitos love it too.

SrTelemaster150

Hey Thumbskull, do you fly @ the "Indy R/C South" field out east of Whiteland?

ThumbSkull

My Feedback: (57)

Yes, and at Atterbury (Johnson County Park) in Edinburgh on occasion.

SrTelemaster150

Yep, I flew at both of those fields when I lived in Trafalgar. For some reason I liked to fly @ the Indy South field better even though it was 2X as far. The Atterbury club seemed too cliquey for me in those days.

I soloed @ Atterbury. George Fetterman helped me out. I had a PCM radio in my Sr Telemaster. (W/a Saito FA150) there were no compatable buddy boxes so George would take it "2 mistakes high" & give me the radio. I managed to solo W/O crashing.

I belonged to the Indy South club & bought most of my stuff from Barb @ Hobby R/C.

ThumbSkull

My Feedback: (57)

Barb sold her shop and is easing into retirement and is actually learning to fly. I learned at RC South back in '81-'82 and built 4 planes then life happened and I got out for a few years.
The club just renewed the lease on the land and looks like it will be there for a while.
I got back in the hobby with the release of the DX7 and have really enjoyed 3D since. Seems like there are more 'grumpy old men' at RC South now than Atterbury these days.

SrTelemaster150

Yeah I know all about the shop being sold. I was out this summer & bought some stuff there.

I saw Barb there on 1 occasion.

I moved to the North country in '98, crashed my PT-19 sortly thereafter & let things set for 14 years as I raised 2 kids.

I'm into (not too detailed) scale, but I like to have lots of power on tap when I want to play.

My 1st Sr Telemaster ended up W/CDI on the FA150 back in '96 & after several bumps & bruises W/the repairs that ensued, It bacame a big high wing sport plane. After converting to bolt down wings W/minimal dihedrel, 0° incidence & wing struts, it would knife edge & go 300' or so vertical from a shallow dive pulled up from 20-30' altitude.

In the spring of '97 I put it straight in @ WOT @ Atterbury when I mis-judged altitude when I entered a slit "S". Most spectacular crash I ever saw bar none! No witnesses or video though. [&o]

I flew @ the Indy South club on a trainer cord in August. I'm still rusty from the14 year hiatis.

ScottMcM

My Feedback: (66)

I weighed the plane today. While it isn't 10lbs, it is 12lbs.....still should be impressive performance, don't you think?