Hi All,

What will be the best solution for OS 160 Fx tuned pipe & header and is it really necessary a fuel pump for this engine???[sm=confused.gif] Did anyone use Carbon pipe for this engine??
I try to find a cheap solution for my practice plane .. My DZ spends a LOT of EXPENSIVE fuel [sm=punching.gif]..

Thanks

Oscar

I know several people how have tried this engine and have succeded with some success and some failures. However, it reminds me of everything I went through trying to set up the ST2300. By the time you spend all your energy trying to make various things work, pump, carb, wraparound headers, pipes etc., you will frustrate yourself into buying something else. My advise.... get an engine that has a pump and rear exhaust. OS, Webra, Bully.... whatever. It is worth the little extra you would pay and still way cheaper then a DZ. The Mintor 1.40 even comes with a header.
However, if your bent on using the engine. Get a header from Karl Mueller... the others just wont hack it. Some are using the Perry pump with succes and others use a kline regulator and presurize the tank. AS for pipes most any good two stroke pipe will work.

Wayne G.

Webra 160 AAR Aero XP could also be a smart move!
Has a rear exhaust and a pump.
I've heard Central offers a great promotional deal on the price.
[link]http://www.centralhobbies.com/Engines/webra/web160xp.html[/link]

Greeve has light and affordable pipe options for 140-160 2C's.

Nedim

Oscar - check out my website for my OS 1.60 setup; click on the yellow "Petrel" plane, and read all about my learning curve. A couple of things -
1. A pipe is a must - the Mac's 1092 gained me a LOT of power over a muffler system. Worth the money, and it was pretty cheap.
2. Karl Mueller header - a MUST - he does custom work, that works, and is in Canada, builds and ships fast. His contact info is on my webpage, too.
3. Some form of reliable pressure regulating system is a MUST HAVE !!! I chose the IronBay regulator, after trying the Cline units, and not being happy with them. Iron Bay regulator pressurizes the tank, allowing the carb to draw only what it requires based on how far open it is.
4. Stainless Steel bearings are the winner! Easy to get, durable, last a long time, and the motor just LOVES 15% nitro, 18% oil.

If you have a plane with a wide enough nose, and you can tolerate the extra weight of the OS, go for it; I doubt you'll be disappointed.

OS160, Hatori header and muffler (not a tuned pipe, just a long muffler) and Cline or Iron Bay regulator. This is a no-nonsense set-up. It runs wonderfully on 10% nitro fuel. Place the regulator just behind the needle valve, NOT between the needle and carb.

This is as inexpensive as you can get and have all of the power and smooth running motor that will be as competative as any other 2-stroke combination. No, it is not as elegant as some other set-ups, but if you wish to have simple and plain efficiency, this will do it. The big advantage with the Hatori exhaust is that there is zero peakiness, not pipe length questions.

I had my maiden flight on my Panacea this weekend. This plane flies great. Every bit as good as my Smaragd-z.

I have set up the Panacea with an OS 160, Hatori wrap around header, Kline regulator and the OS 140 pipe. I am having a fuel draw problem and the pipe seems peaky. When the engine is on the pipe, I have plenty of vertical. Some times the engine will not come back on the pipe when transitioning from low throttle thru mid range. I have a very reliable and low rpm idle. The fuel tank is mounted over the wing tube on the CG point. No problems in transition when I test the engine on the ground. Currently the pipe is mated to the Hatori header with no additional length. What is the best pipe tuning length for this engine.

Thanks all,

I think OS 160 Fx will be the cheapest & best solution for economic practice flights..

Oscar

SWK,
Can you email me a [email protected]? I have some questions about your set up. I'm building a Panacea with an OS-160 using a little different set up than you. Also would like to talk about the airplane. If you were like me than you didn't get a whole lot of info with the kit. They're still working it out. I'd like to see a picture as well if you have one. I know that Todd Blose and BW Ponder were building the same airplane, have you talked to them at all?
Thanks,
Greg

Oscar,

Now, after reading what Mark and Bob wrote I am sold to the idea of using the OS 160 FX. I say "Go for it". It will save some money to buy more fuel, that means more practice.
Anyway, I will still be using my Dingo! We can only fly 7-8 months up here.
I friend who flies in Masters is using a OS 160 FX set-up in his new Mantis Ex. His comments after the first several flights are very positive. He will go to a couple of contests in South of California this winter. I will let you know when I learn more from him.
BTW, he said his Mantis flies great. The model he used to fly was a Synergy!

On the Synergy/160 combo. There is no need to change the layout by tossing servos into the tail in order to achieve a good CG with this combo. The standard tray mounted servos allow the airplane to finish with a nice balance.

The nicest set-up I have seen for the Synergy is Yves Van Gompel's airplane. He uses a ZN mount made for the 160. It is a beam mount similar to a hyde mount with a couple of differences. One, it is far lighter in weight. The beams, however, are only long enough for the two rear holes of the motor. This requires a nose ring and he uses the standard ZN nose ring which attaches to the nose ring mount behind the fuselage nose. A further addition he made was to demount the needle valve from the motor and mount it on the fuselage itself. It is a superbly clean looking set-up and makes tuning very easy as the needle valve does not jump around as the motor occilates in the soft mount. I believe he is using an ES muffler (not a tuned pipe) and he is using the Hatori header.

Recently another test on this airplane was conducted with the 3M170. The test was a smashing succes. A small modification at the bottom of the firewall was required to allow the pipe to pass over the ridge. Although a significantly higher cost to begin with in comparison to the OS160, it runs smoothly with great transition and outstanding power on 10% (we used Coolpower for the test flights...we also tried 0% but the results were not great with that). It is also about 100grams less that the OS160, so there is another option for saving on fuel costs. I believe that the battery was the only thing changed to keep a good CG for those tests.

Me, I have a couple of DZs so I shall continue to use those, but when they reach the end of their first lives I shall switch to a more economical power plant so that I can put a little money into my girlfriend's house (like the workshop and jacuzzi!!!).

Regards,
Mark

Bob,
Where did you find SS bearings for the 1.60?

I am very interested to hear hard numbers and prop sizes for this setup with OS160. I am setting up my own design 2M with the OS160, hatori header, greve pipe, & Iron bay regulator. I am curious about prop size, fuel and RPM results. Can't wait to get it in the air to compare power with this setup versus standard pitts muffler (have it setup on a Sig extra) swinging an 18x8 prozinger. Should be a bit stronger......right?...I hope.

BTW, thanks Mark for the info on the remote needle mounting.


www.geocities.com/markhunt_2000/INSIGHT

My OS/Iron Bay/Mac's 1092 system turns in the low 8's with an APC 17 x 13N, APC 17 x 12. Bump the nitro, and it goes higher. Very solid power.

Anthony - SS bearings were in stock, cheap, and they work fine - from Boca Bearing...I have a number around here somewhere, if you need it - email me.

Flyintexan:

I flew a focus with the exact setup that you mentioned: OS 1.60 / hatori header / greve pipe / cline regulator with gator mount. Once I learned to put the cline *behind* the needle rather than between needle / carb (as suggested earlier) the engine was a dream. It had rock solid idle and transition.

On Omega 15% it was swinging an APC 17x13 at about 82-8300 static after just a few tanks of gas. It had so much power that ended up running a 17x10 to slow it down.. I'm sure that it would swing that prop in the high 8's or even 9's if I tached it.. Fact is that the tach never came out of the box though because I never had to worry about top end.. My focus was just under 11lb, and that engine would horse it north like a rocket.

I only fly 402, and there was so much excess power that I had trouble managing speed and presentation. Probably comes in handy in the upper classes though. Hope this helps, Chuck

Chuck,

That's great news! Thank you for the info. I wonder if an 18x8 would be too slow in the uplines?

I will be flying 402 this year myself. Hope to do well with my new plane.


Thanks again,
Mark

Hi Guys,

What is the performance difference between Mac's 1092, 1090 and even 1060 pipes for os160 other than the size ?
I found people use these three different pipes for os160.

Also, where can I find the Hatori wrap around header for os160?

Thanks in advance

Mike

I got my hatori wrap around from Central Hobbies...

Thanks !!
I will check it with central hobby.

Mike