RE: Anybody interested in a NEW YS shortstroke? New, as in produced this year...
 

This raises an interesting question. I wonder if YS might have contacted Hatori about their plans so that they could begin production of headers and pipes for these engines again...

In order to make life simple for themselves (and promote sales), I would imagine YS would have kept the design and mounting screw spacing for the header the same as on the old YS long stroke engines.

David

RE: Anybody interested in a NEW YS shortstroke? New, as in produced this year...
 

Got a call from Richard yesterday-container expected sometime in April.

Jim

RE: Anybody interested in a NEW YS shortstroke? New, as in produced this year...
 

Got of the phone with Richard this morning and he is quite please with the performance of the new YS short stroke. He did give me a good piece of news so I'll pass this along. In my opinion, the Hangar 9 Phoenix 7 would be the perfect home for this motor except who want to run a side exhaust motor and sling the pipe underneath the wing - hassle taking on and off. Well, heres what you do should you decide to run the RE YS.. Anyone remembers the Aurora 60 and Atlanta 60 using the left hook header from Hatori or MAC (these planes use trike gears), well this is the perfect header choice in that the offset places the pipe directly over the wing. The location of the pipe on the side and the thrust line of the plane are also parralle. This the way to go. The price will be somewhere in the $325 range. which for the added 1000K rpm, its worth it. Back in the day, we were running DW props 10 3/4 x 7 1/2. This motor turns an 11x9 at 14400 - and thats on the ground. Imagine what the unload RPMs will be in the air.Also, he tested using both the hatori pipe and MAC pipe, same results. Almost here.</p>

RE: Anybody interested in a NEW YS shortstroke? New, as in produced this year...
 

I saw a lot of Phoenix's converted to rear exhaust. They never seemed to fly as well as the stock side exhaust set-up. The plane really needs the area and the weight of the pipe hanging underneath the wing. Expect some trimming issues if you put it down the side.

RE: Anybody interested in a NEW YS shortstroke? New, as in produced this year...
 

Dumb question, but what about mounting the engine at an inverted 45°? I have an older YS .61 that I would love to put in one of my Phoenixes, but I am not quite sure how it would look (or work) mounting the motor at that angle. Any advice?

RE: Anybody interested in a NEW YS shortstroke? New, as in produced this year...
 

WITH ALL THINGS BEING SYMMETRICAL, TO AVOID YOUR BASIC TRIMMIMNG ISSUES WITH THAT MASS HANGING ON THE SIDE, WOULDN'T IT BE PRUDENT TO DO A LATERAL BALANCE (EMPLY) PRIOR TO FLYING (RETRACTS UP, PIPE MOUNTED).I'VE DONE THIS MANY TIMES AND IF ONE SIDE WAS LOW, I'D ADD WEIGHT UNTIL IT BALANCES OUT BUY MEASURING WING TIP TO SURFACE. THE WEIGHT THAT WOULD BE ADDED WOULD BE BURIED IN THE WING TIPS AND COVERED. I'VE ALWAYS MAINTAIN A 10 DEGREE DOWN THRUST (PITCH) AND MY LATERAL BALANCE WAS PRETTY MUCH EVEN - JUST THE WAY I BUILD.</p>

RE: Anybody interested in a NEW YS shortstroke? New, as in produced this year...
 

What I was referring to was the location of the vertical CG. Having the pipe above the wing instead of below it raises the vertical CG and will cause the model to pull to the canopy in a vertical climb. Also, it causes a reduction in the side area of the model and will change the rudder response, potentially causing a roll with rudder. Not saying it couldn't be worked out with trimming, but I've never felt Phoenix's with the pipe down the side flew as well. To each his own!

RE: Anybody interested in a NEW YS shortstroke? New, as in produced this year...
 

Good info tony, only from a person with competitive experience - thanks

RE: Anybody interested in a NEW YS shortstroke? New, as in produced this year...
 

I spoke with Richard last week he confirmed that the RE engine will be expected end of April at $325. I am on the list.
Sparky

RE: Anybody interested in a NEW YS shortstroke? New, as in produced this year...
 

<div style="margin: 0in 0in 0pt">Okay Guys,the latest info!http://www.rcuniverse.com/forum/js/f...wink_smile.gif</div>

RE: Anybody interested in a NEW YS shortstroke? New, as in produced this year...
 

http://www.rcuniverse.com/forum/js/f...wink_smile.gif

<div style="margin: 0in 0in 0pt">Okay Guys, just an update . . . . . Time to put my YS Hat on!!!</div><div style="margin: 0in 0in 0pt"><font color="#00265e">http://www.rcgroups.com/forums/showpost.php?p=25282151&amp;postcount=34</font> </div>