YS 50 ARRIVED TODAY

[Scooterpilot]

Here's some pic's of the YS 50.

Now all I have to do is figure out how to translate the instructions into English

[DavidH]

Scan the instructions and translate them with Babelfish.

David

[Hotshot Charlie]

Hmmmmmm....... virgin territory !!! Keep us posted on it's setup, breakin and POWER !!!! Can't wait til they hit the US market..... if it is as good as their 80 and 91 !!!

[DavidH]

Can't wait til they hit the US market

Rob,
That is probably the best thing to do if residing in the states. Wait till YS Performance has them and starts distribution of them here in the US. I am sure YSP will mark the engines that come thru them and only do warranty service on the engines they brought in. Will certainly make it easier to have warranty work done for US residents if there happens to be a problem with this engine.

David

[Hotshot Charlie]

Hey David, thanks for that info, yep, for us, US warranty is a must. At least for this poor broke boy. Seriously, the YS50 is the reason I bought a used OS50sxh for my first 50 instead of the OS Hyper. Figured by the time I wore out the OS50sxh, the YS50 would be stateside. I have too many friends that have had nothing but good luck out of their YS products, mainly the YS80 and YS91, so if the YS50 follows "suit", it will be a heck of a engine.

[NolanManley]

CHUCK, Screw the instructions. The low needle will be right and you can feel out the high. Start high and work it down. :shock: :D

High won't be more than 2.5 turns out anyway to start. ;)

[Scooterpilot]

Nolan,


Thanks for the advise and you the know engine is going to be :smokin:

[Shortman]

Hey Chuck any new updates on the YS?

[Scooterpilot]

The YS 50 is installed in a Raptor 50. The engine mounting holes in the Raptor frame had to be elongated. The reason for this is the clutch would not slide all the way up into the clutch bell. I didn't measure the crank but my guess is the crank on the YS is a bit shorter than on the OS Hyper 50.

Also, a stand-off had to be mounted on the the throttle barrel. This allowed the throttle arm to clear the frame and the throttle rod does not rub against the Kraptor frame.

THe muffler being used is the JK Hatori SB 50 HP. I started the motor with the high end needle at 2 1/2 turn out and that's very, very rich (pig rich even). So much so, that the setting was dropped down to 2 turns open so the model could hover with out loading up. Even at 2 turns the motor is very , very rich. So the needle was turned in a bit more; however the motor began to get warm. Since no one has parts for it yet, the needle was opened up again to ensure the motor ran cool. It's running more like very cold then cool. I'll start to lean it out after the 4th of July weekend. I want to get a couple of gallons thru it before I really dial it in.

Also, the idle needle needed to be adjusted. It was bit too lean to start with.

Today, two full tanks of fuel were run though the motor. Here are some observations:

Fuel : Magnum 30%

Once the idle needle was adjusted the YS idles very smooth without and heistation during idle.

The motor and pipe combo is very quite.

The motor is very consistent running as rich as it it. It pulls very good for a motor being run as rich as it is.

Yes, the motor loads up during full throttle; however, the motor isn't close to being properly tuned.

The transition in mid-range is still rich. I'll tune the transition when the motor is broken in a bit more. One thing I really like about this motor is it does not lean out when you get to the bottom of a tank of fuel. Gotta like those YS motors

The SB 50 pipe seems to work very well with the YS motor.

Engine RPM 2,000 to 20,000

If I can answer any questions, let me know.

I'd like to thank all those who helped with the installation. It made it go much quicker.

Chuck

[Shortman]

Thanks for the update Chuck, just still torn between waiting a little while for the YS 50 or getting the OS 50 Hyper. I really like the sound of an easy to tune and run motor like the YS. I look forward to seeing how it goes once it's leaned out a little.

[Scooterpilot]

I now have burned about 1 3/4 gallons of fuel though the YS.

I've started to lean out the motor. With a 10/-10 pitch, I can't get the motor to load up. I'm running my head speed at 1950. I'm going to increase the head speed to 2050 and see how that works. I'll proably have to increase the pitch.

17425 motor rpm with give me a head speed of 2050. The YS motor specificiations call for 2,000 to 20,000 rpm. So at 17425 the motor should be very close to providing peak performance. On Firday, I'm going to fly 4 more tanks of fuel at the present needle setting; then, on Saturday, I'm going to bump up the head speed and see happens.

Regards,

Chuck

[Shortman]

Thanks for the report Chuck, how do you like it compared to the OS 50 Hyper? Are you using a tuned pipe for either one or running the same set up to get the comparison as close as possible? I hope YS is making a lot of these motors for us :)

[Scooterpilot]

UPDATE:

I've leaned the motor out and set the M/R RPM @ 2050.. Now, I must admit, things are beginning to happen very quickly in the air and the climb rate is, how should I say it, AWESOME.

I was short a couple or parts on the all metal Quick UK head that was given to me. So, Sunday it will be installed and I'm going to up the M/R to 2100 and keep it there. I'm running the J/K Hatori pipe with the YS 50. It looks just like the very large SB 16 pipe, except the J/K pipes is being used on the YS 50

I don't have two J/K pipes so I'm using a Hatori two piece SB 10 on the Hyper.. The OS Hyper is a strong running motor and it is totally broke in.

The YS is almost broke it. It's going to be prettly close. Once I feel the YS is broke in all the way I'm going to compare the climb rate to another Raptor that running a OS Hyper with a MP II. Right now they look pretty close.

Regards,
Chuck :badair:

[Shortman]

Hey Chuck sounds like the YS is coming into its own there nicely! I just ordered the Quick UK metal head for the Raptor 50 and I already have the washout base, what is the ideal headspeed for the Raptor 50v2? I know around 2100 has to be about the maximum it can take right, this of course running carbon blades. For hard 3D flying I imagine the faster headspeed is prefered

[Hotshot Charlie]

Most of the guys I know are flying 1950-2000. I am running 1950 on my Gohbee Stinger 50.

[Scooterpilot]

Steve,

I'm running 2100 with carbon blades, which is right on the edge. At that head speed you want to keep the head constantly loaded by moving from one 3D manuever to the next 3D manuever.

You can do tic tocks 5 feet off the deck without a problem, climbing tic tock, climbing flips,death sprial and pumping the collective. The motor is coming into it's own.

The all metal head gives the Raptor a solid feel. If you've flown an Evo 50 you'll know what I'm speaking to. Anyway, it seems to have more of a FAI feel with the head than the flip and tumble feel that you have with a stock Raptor .50



I don't think it has the HP the OS has; however, it is more consistent and smoother

Regards,

Chuck

[Shortman]

Hey Chuck, you get any more flying time on the YS to compare with the Hyper MPII combo?


Steven

[Scooterpilot]

Steven,

I flew the YS Sunday with the all metal head at 2100 RPM. The motor liked it.

As far as the difference between the YS and OS, I'd say the YS transistions from idle to full throttle great, so does the OS. The one thing the YS does that the OS doesn't is it doesn't lean out when you're getting low on fuel.

Both are good motors, personally I like the YS because it runs a pressurized fuel system and I don't have to run a header tank so a save a very little bit of weight. As far as performance goes, I'd have to say you'll be the judge of that

Regards,
Chuck

[wtr]

is there a difference in flight time?

flight times with a Hyper sure are short...

[Scooterpilot]

Flight times,

I'll clock it tomorrow and let you know

[Scooterpilot]

I only flew one flight today and it was 10 minutes. The head speed was 2100.

If the WIND permits, I'll fly sunday at 1950 and see how much of a difference there is?

Regards,

[Laurens]

Do you still like it?