I have a 2.1 moki, and in order to install the cline system I have to drill a hole in back of the engine crankcase? And then what the pressure tap screws into that hole, dont you loose compression that way, and could you drill a hole to big by mistake? I am a little confused some help would greatly be appreciated!!

Simply use the correct sized drill for a proper tap, tap the hole and screw in your pressure tap. No problem. Don't worry about compression beneath the piston, plus, your not simply venting the crankcase.

The regulator can be stapped underneath the carb. On the Moki it sits so nicely that one might think the Moki has a slot built for it.

Mark

I just did this with my Moki 180 and started my bench break in process.

a) 6-32 drill/tap combination in the center of the backplate. The include pressure nipple that came with the Cline Regulator screws in tight and solid -- no concerns for leakage there.

b) I mounted the regulator on the side of the crankcase just below the cylinder fins with 2-sided foam tape and further attached it with 2 straps.

I will edit this post this evening with pictures.


NOTE: The Cline Regulator provided a very positive pressurization of the fuel tank. When I finished for the evening I disconnected the plug from the pressure side "T" on the fuel tank and released quite a bit of built up pressure. There is no doubt in my mind I could put that fuel tank anywhere in the airplane and still have a smooth fuel flow to the carburetor.

THanks for the reply, and i am looking forward to seeing the pictures.

hilleja could you also post a picture of how the pressure tap looks when installed in back of the crankcase.. THanks alo the other picture is really great.

Hilleja,Don't the instructions say not to hard mount the regulator?As I remember it says especially not to the engine.I has been a couple of years since I used one on my Moki 1.8,so maybe things have changed,just curious.I still have one and am considering using it on my OS 1.60,Let me know what the instructions say please,Thanks,
Mike

Actually it isn't realy hard mounted. I have foam 2-sided tape between the regulator and the engine. I talked to Cline a few months ago and he indicated that what I've done would be good. I do need to shorted the fuel line between the regulator and carburetor nipple.

glxvr6turbo,

I'll update this post in a little while with the picture you asked for.

THanks for the pics I just got my cline regulator in mail today still waiting for the engine and the plane to arrive which should be jan 15, cant wait. What glow plug are you going to be using? And are you going to be using a starter (if yes than which one) or are you going to be hand starting it?

I have used the Cline in a few applications. Granted the Moki does not produce much vibration, however you should be careful mounting the regulator directly to the engine. Vibration will cause the regulator to mis-function. I found this out with a Saito and OS 1.6 installation. Use some foam and loosely mount if needed, otherwise simply allow the regulator to hang as close to the carb as possible (1" or less of fuel tubing).

I am also running one on my Moki, you'll love it!!!

I am currently using an OS #8 but am told that the OS F plug is also good for this engine. The recommended method for starting this engine is a back-flip against compression. That will be my norm once the engine is properly broken in and readily starts. For now I am using a Sullivan Dynatron, connected to a 12volt Motorcycle battery -- it easily turns over the engine if you start with the prop up against compression.

I do have double-sided foam tape on the back of the regulator. I have heard that hardmounting it to the engine is not a good idea and have sent Cline Industries an email with the above picture for their recommendations. Letting it hang loosely does bother me some because I'm concern the fuel line may disconnect from the regulator -- I will explore the use of a fuel line clip to prevent this.

Cline suggested that I nestle it right under the carb and secure it with a tie strap. He did not mention anything adverse about a hard mount and I can vouch for the fact that it works flawlessly. My fuel line is only about .5" between the regulator and the carburater inlet. A friend uses one on his OS1.60. He lets it hang freely right before the needle valve. Yes, behind the needle, not by the carb. It too works flawlessly. Let it hang, attach it to the motor, they both work. This cat seems to be skinable in several different methods.

Mark

Mark, my os1.60 is pumped with the regulator between the needle and carb body per Jim Cline. My main needle is pretty sensitive like this, nothing like before it was pumped, did putting it behind the needle solve that issue?

Eness,
My friend never tried it between the needle and pump. Each time I speak with Cline he recommends trying it like that, between the needle and carb, but it works so perfectly and naturally where it is that we can't think of any reason we should change it. The needle is not super sensitive at all and there is no lag in response. The darned motor simply runs perfectly with the fuel tank on the CG.

It's flying in a Fashion at the top level of F3A so I can assure you that the owner is very demanding on performance. He switched from YS1.40Ls to OS1.60/Cline PCFS and loves it. So, I would say give it a try immediately behind the needle and see what happens.

Mark

The reason it is recommended to mount it as close to the carb as possible (after the valve) is to reduce possible lag. The hard mount thing is recommended (from Cline) only for the Moki. I have mine hard mounted to the carb on Mioki also, but had problems with the OS 1.6 (bubbles).

My 1.60 top valve went from 2.75 turns open to .75 turns open and is also very sensitive. I like it this way and I guess it's a matter of opinion. All in all, I guess if you find something that works, you should go with it!

what's the fuel line comming from the rear of the engine ?
I have a moki 1.80 but mine doesnt have a port there.

Remember to use LARGE diameter fule line for the one inch or less line between the regulator and the carburetor. You can use medium line everywhere else.

NoFLaps - the cline system works by tapping the pressure pulse from the crankcase. This is the line you see coming from the middle of the crankcase on the back side. You have to remove the back case (4 screws), drill a hold thru it, and tap it (cut threads in the aluminum) and screw in a fitting to attach the fuel line.

Hello Guys. I have a Cline regulator on an OS 160 opposed twin. -worked well for 5 or 6 flights then started flooding again at idle. Fuel tank is much too high. I remember reading somewhere that the Cline does not work well with an airbleed carb. Is this true???? Thanks.