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Anyone flown with the new OS 200 pumped 4-stroke?

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Anyone flown with the new OS 200 pumped 4-stroke?

Old 07-19-2008, 03:45 AM
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dnugent
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Default Anyone flown with the new OS 200 pumped 4-stroke?

I have a brand new 2x2m patternship coming and are almost a definite to go down the YS path.........BUT

If you guys have had any flying with the new pumped version please give me your feedback.

Cheers, DN
Old 07-20-2008, 03:58 AM
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Default RE: Anyone flown with the new OS 200 pumped 4-stroke?

a nibble?[&o]
Old 07-20-2008, 06:12 AM
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Jeff Boyd 2
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Default RE: Anyone flown with the new OS 200 pumped 4-stroke?


ORIGINAL: dnugent

I have a brand new 2x2m patternship coming and are almost a definite to go down the YS path.........BUT

If you guys have had any flying with the new pumped version please give me your feedback.

Cheers, DN
A brand new WHAT ?? . . and definite to go . . WHAT ?? . .

Interesting ! You will have to fill me in some time, Dave

PS. keen to here OS200 pumped reports also . .

Cheers, JB
Old 07-20-2008, 08:44 AM
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sarashina
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Default RE: Anyone flown with the new OS 200 pumped 4-stroke?

I know some cases but don't know its detail.
For example, someone installs OS200P on Chip Hyde's Pass-Port and is using APC 17.6X12(modified APC 18.1X12) and 20% nitro fuels to fly it(4680 grams in weight).
I hear that the power is less than YSDZ170 and also hear that it feels like using YSDZ160 to a heavy plane. I don't know anymore at the moment.

Regards

Sarashina
Old 09-08-2008, 09:08 AM
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Default RE: Anyone flown with the new OS 200 pumped 4-stroke?

i have seen one at my local flying site with the standart os-fs200 , he fly a OTOP 2m , using cool power 25% n apc 17x13 prop .

Good power ,climb vertical 80% throttle only ....... plane weight 4900g , so i think the punp version will be more power than standart .

But definately not close to the Ys170 , he own both engine n tell the diffrent ............ !!
Old 09-09-2008, 07:42 AM
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Default RE: Anyone flown with the new OS 200 pumped 4-stroke?

I'm also flying a standard FS200 with Perry VP20 pump and YS Hatori short pipe. My plane is a 2m Sombrero with weight really on a heavy side, over 4900g. Using also 25% nitro, but APC 18x10 pattern prop.
OS turns this big prop quite nicely, a lot of torque to use, and the engine sound is great with Hyde type mount. OS works well, no problems at all after 30 flights.

Power is enough atleast for intermediate program, climbs nicely without loosing speed and also speeds up quite fast. Feels to have more power, or torque, than my 160FX has.
I think a pumped version could be a good choice, i'd also like to hear about it.





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Old 09-09-2008, 08:38 AM
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Jon Wold
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Default RE: Anyone flown with the new OS 200 pumped 4-stroke?

Hi JPE, I have the same setup (OS 200, Perry pump, Hatori header and pipe.)
How did you solve the problem with the header? Did you add more spacers inside the head of the engine?
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Old 09-09-2008, 09:06 PM
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Default RE: Anyone flown with the new OS 200 pumped 4-stroke?

Boy I wish this engine would be good for Pattern but unfortunately I think it's aimed more toward the scale market. The OS 200 fuelie is pretty powerful but it's REALLY expensive. The carbureted versions aren't super-charged and just don't make the power that a YS does. They're probably OK for the lower classes but they're just not up to the task of pulling a widebody like a YS does. Sorry. I'm a loyal OS user so this is a bit of a disapointment for me. I had hoped to use the 200 in my Black Magic VF-3's next year but I think I'm just going to go with my trusty 160 Fx setup unless someone can give me some good numbers with an APC 18.1x10 on 15% nitro.

John Pavlick
Team Black Magic

Old 09-10-2008, 01:22 AM
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Default RE: Anyone flown with the new OS 200 pumped 4-stroke?

Hi,

Yes i had to add 3 more copper spacers, because the thread is longer than in FI version. No problem, works fine with them also.
I'm using a VP20 version Perry, but i think your crankcase pressure version works ok also. VP20 works because this big four stroke shakes enough to feed all the fuel needed. When i was runnig in the engine first time 480cc tank was empty after 2 minutes (needle was open about 5 turns)! Now i have half a tank left after our nordic f3a schedule.

Basic OS200 gives you more usable power than 160FX without tuned muffler, that i can tell bacause i'm running them both now. 200 needs a bigger prop to give you the benefit. I can't compare to YS, but i believe that YS 160 has more power than this basic 200FS version, YS price is higher too. 200 needs 25% nitro if using 18x10 APC, with 15% engine runs great also, but engine sound tells that the load is getting too high when climbing vertical. With 25% it just climbs and climbs forever, but you need to use all the power you can get from the engine. Remember that my airframe weights a lot.

I think this basic FS200 a good reliable engine for intermediate program as said, but FS200-P is the one to choose for pattern plane if you want to run OS 4 stroke (FI version is just too pricy for most of us).
YS is a proven choise however.

Old 09-10-2008, 10:36 AM
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Default RE: Anyone flown with the new OS 200 pumped 4-stroke?

Yeap... i just recieved my OS200-p yesterday, will break in tomorrow ..... see how it goes , one question , do i need the delay glow

start to start this engine ??
Old 09-11-2008, 01:13 AM
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Default RE: Anyone flown with the new OS 200 pumped 4-stroke?

Basic FS200 starts quite easily, not very violent one. After a flight when the engine is a bit warm and full of fuel it needs glow for a few seconds before aplying starter, else it may kick but as said not very violently. Newer have thrown spinner and prop away, yet.
Old 09-11-2008, 02:39 AM
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Default RE: Anyone flown with the new OS 200 pumped 4-stroke?

Mine kicked like a monster [&:]
I got the hang of it eventually, it was just a case of timing the glow properly (fast!) so that the engine has only just started spinning and not pumped full of fuel when the plug lights up. I have the VP30 and starts to fill the engine with fuel the moment you start turning it over so that didn't help matters... Another way to do it that works fine but requires three hands is to light the plug, close the throttle completely and open it very slightly once you have the engine turning over. It'll come to life very smoothly.
Old 09-11-2008, 11:40 PM
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Default RE: Anyone flown with the new OS 200 pumped 4-stroke?

What are you guys seeing for RPM with different props and fuel? I know what my 160 Fx can do - I want to see if the 200 is worth experimenting with. I just can't convince my self to cross over to the Dark Side (YS). LOL

John Pavlick
Team Black Magic, Tech-Aero Designs
Old 09-12-2008, 12:48 AM
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Default RE: Anyone flown with the new OS 200 pumped 4-stroke?

I have to get a tach meter to give you the answer. I friend of mine has one, so i'll try to get some results during weekend.
Old 09-14-2008, 10:02 AM
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Default RE: Anyone flown with the new OS 200 pumped 4-stroke?

This is a very smooooth engine compare to YS170 ..... start up easyly and the kick is not violent , just finished 2 500cc tank with

the High needle open 3 turns to run it ..... another tank or so will put in my 2m BEAM 4800g . will fly it this coming weekend .

All i can say is OS is a user-friendly engine starts easyly and tune !!

I have bad luck with my YS170 .... brought new and not running well , can get it idle , send it back YS Japan to check ......
Old 09-15-2008, 02:42 AM
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Default RE: Anyone flown with the new OS 200 pumped 4-stroke?

do let us know how's the power after that
Old 09-16-2008, 11:42 AM
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Default RE: Anyone flown with the new OS 200 pumped 4-stroke?

Jpe , how do you install the nose ring to the 200 ?? Do you modified yourself i can't get the nose-ring tru the prop adapter , it is bigger

than my ys170 !!?? Wonder why os don't make it as standard size !! i am using Budd-mounth from budd engineering .

Help please anyone have install the nose ring , please post some pic ........ that will be a big help .[]
Old 09-17-2008, 07:49 AM
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Default RE: Anyone flown with the new OS 200 pumped 4-stroke?

200FS needs a smaller nosering hole (30mm) than for example 140RX (installed on plane earlier), so i made a new one from polyurethane plate. It's very durable rubber like material. It's also a bit flexible so you can install it wihout removing prop adapter, you just have to use some force. I got the tip to use PU from finnish pattern forum.


Old 09-17-2008, 12:39 PM
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Default RE: Anyone flown with the new OS 200 pumped 4-stroke?

Well just finished installing the OS200 to my NEW 2M 'BEAM' .......
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Old 09-24-2008, 08:54 AM
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Default RE: Anyone flown with the new OS 200 pumped 4-stroke?

just test fly my Beam today ......... as i check the high end needle it open just 1/4 only !!!![X(] is that normal ??!!

i start at 1 1/2 turn open , it run rich than slowly screw it in to get the rpm peak .... i check again still 1/4+ turn open only !!

Any of you having the same setting ??

Power is not quite impressive ...... as i want it to be , but will see how it run for a few more tanks tru it !!
Old 09-24-2008, 09:40 AM
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Default RE: Anyone flown with the new OS 200 pumped 4-stroke?


ORIGINAL: huison2005


Power is not quite impressive ......
I would at least start with a different prop.
Dropping a couple of blades could be of benefit.
Old 09-24-2008, 11:39 AM
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Default RE: Anyone flown with the new OS 200 pumped 4-stroke?

Run it on a 2-blade prop first. Don't try to evaluate the power with a 4-bladed prop. Start with an APC 18.1x10, then try something a little larger. For Pattern you'll want to stay in the 10 - 13 pitch range. 3 and 4-blade props help downline braking but they're less efficient so you lose some power. I REALLY don't think you need a 4-blade prop on a 4-stroke.

John Pavlick
Team Black Magic, Tech-Aero Designs
Old 09-24-2008, 02:12 PM
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Default RE: Anyone flown with the new OS 200 pumped 4-stroke?

3 and 4-blade props help downline braking but they're less efficient so you lose some power. I REALLY don't think you need a 4-blade prop on a 4-stroke.
Wow that is a pretty strong opinion/statement there John about using multi-blade props in pattern on 4-strokes...


I have been using 4-blade props on YS motors since the DZ was introduced with good success.

[link]http://www.rcuniverse.com/forum/fb.asp?m=6143975[/link]

[link]http://www.rcuniverse.com/forum/fb.asp?m=6159623[/link]


I would hope the OS 200 can swing a multi-blade equally as well as a DZ 160/170.

Huison2005 What size 4-blade did you try? What nitro %? What was the RPM reading at full throttle?
Old 09-24-2008, 08:29 PM
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Default RE: Anyone flown with the new OS 200 pumped 4-stroke?

Well i'am using APC 15X11 Cool power 20% ......... seems like to much load with 15x11 , not pulling the plane........

will try a 2blade 17x12 n 18x10 , let see how ........!
Old 09-24-2008, 08:48 PM
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Default RE: Anyone flown with the new OS 200 pumped 4-stroke?

APC 15X11 is what I am use on my current aircraft's powered by DZ 170s on 30%. Experience has shown if you are not able to spin the 15x11 near 8700 RPMs then it is to much load for the engine and will not yield desirable flight performance on a typical 2m design.

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