I use the HATORI O ring as well but what I found is that the positioning of the muffler onto the Header is very important.
You must have the muffler at the same height as the Header and they have to be parallel to each other otherwise you will create a stress point on the O ring and over time with the movement of the engine the O ring will deteriorate at the stress point and oil leakage will occur

Hope this helps

Yep, I always set the header and muffler inline/parallel.

https://cimg1.ibsrv.net/gimg/www.rcu...ff0dfd4526.jpg
Hello

I did not find Hatori O ring in France.
So I received this YS muffler O ring W0025 and I will try next week.
Claude

I have a new DZ200 CDi and I cannot get fuel flow through the injector. I also have a DZ185 replacement head assembly with this new type of injector in it, and that won't allow fuel to flow through it either. Has anyone else experienced this or am I missing something?
Thanks

Keith

I haven't had any problems with fuel flow Keith.

Gday Keith,

Try disconecting the tube from the injector and turn the engine until fuel come out and then put back on.......

Hi All,

Thanks for your replies. My Yamada sorted it out in an email. In fact if I'd read the instruction manual for the 200 CDi, it would have told me.

When I replaced the head on my 185, it came with the new injector. However when I set it all up to run I used the original thick walled silicone from needle valve to injector. The new one way valve relies on the fuel tube flexing under pump pressure, thereby allowing fuel to flow between the inside of the fuel tube and the outside of the nipple before reaching the small hole that's drilled across the diameter of the nipple a few mm back. That's why the "normal" orifice to the nipple is blocked. The solution is to do as YS say and use thin walled silicone which allows enough flex at the nipple to allow the fuel to flow in this manner. And it says this in the manual as well!

I didn't run the 200 after seeing the issue with the 185 head, thinking the new injector valve was somehow faulty... how did I check this.... I took a long length of thick walled tube and connected to the injector and found I couldn't blow through it!

Both engines running great now.

Thanks

Keith

Hey Keith,

If all else fails, read the instructions Lol.

I ordered some stuff from Yamada, so I got some of the injector fuel tube at the same time.

YEP I am the same.....I wait until I exhaust all possibilities and only then I read the instructions.
I know then that it will work he he he......


:D

:D:)

https://cimg2.ibsrv.net/gimg/www.rcu...8cd546c6b7.jpg
https://cimg8.ibsrv.net/gimg/www.rcu...fafa057af2.jpg
Hello Happy yamadiste

About 20 flights (13 mn per flight) with YS muffler Oring and no leak.
Very happy with.
Claude

https://cimg0.ibsrv.net/gimg/www.rcu...a09154352a.jpg
Hello Scott

Which Nishioka did you installed 23 mm, 27 or 37 mm ?
Nishioka - SMAC MODELISME
Claude

Hey Claude,

It's actually the 20mm one. In hindsight, I should have used the 29mm one and not added the spacer.

https://cimg8.ibsrv.net/gimg/www.rcu...8201d44a91.jpg
Hello Scott

Thanks I'm going to order one
same as Christophe
Claude

Update on my 200cdi.

The engine has done 183 flights. So with the rear bearing copping a lot now and prior bearing failures at 120 - 150 flights, it was time for a rebuild.

Surprisingly, the rear bearing wasn't too bad. There was no roughness when turning it and it still looked pretty good. The only thing I can think of for the lack of wear, is the Rapicon fuel I'm now using. Must be good oil in it. The front bearing is usually in good condition, but this one was a little rough though.
The plug is the original too. 183 flights, so pretty happy with that.

Front and rear bearings and all gaskets and O rings were replaced. I didn't replace the cam bearings. The ring was OK too, so left that in for another go. Even though the plug was still working fine, I replaced it as a matter of course.

It's back in the Xareltoo now, ready to go when the weather is favourable.

Hello Scott
Very informative, but what is the duration of flight to compare with my engines ?
claude

I count one schedule as a flight, so around 8 minutes per flight.

Hi Kobi,

I use a flat blade screw driver under the cap and twist, while wriggling the cap at the same time.

Hey Alejandro,

https://cimg7.ibsrv.net/gimg/www.rcu...4c20cc8f6d.jpg
This one.

Oh, that explains, I am using 30% heli and it's ok but not that good compared to CoolPower.

I will have to contact the dealer in Spain I guess, but being the only one. How do you get it?

Best regards

There is no dealer in Australia. I imported directly from Rapicon in South Korea.

Hello Scott
I installed 37 mm Nishioka. It fit well
Claude
https://cimg3.ibsrv.net/gimg/www.rcu...36f8f1b47f.jpg