THROTTLE POSITION
 

Here are some pics of the throttle on my Magnum 91. I have looked at this thing from as many angles as I can see. The bottom line is that the throttle arm protrudes from the cowling. I am having a problem attaching the contro rod. I have the engine out as far as it will go on the mount and of course, the mount is centered on the firewall. I have looked at removing the throttle and reinstalling it with the arm reversed. It doesnt look like that can be done. And the problem is that there is not enough room between the throttle arm and the firewall to make a bend in the control rod. I am using a standard clevis. Is there something else I should be using to give me more room?

RE: THROTTLE POSITION
 

Use an EZ connector and bring the pushrod in from below

RE: THROTTLE POSITION
 

The way I did mine was to have the metal pushrod go passed the carb then I bent a 1/2" radius 180* bend back to the throttle arm. I never had a problem with doing it this way, I've done it maybe three times, it always worked well.

RE: THROTTLE POSITION
 

Thanks fellas.  Once again...RCU comes to the rescue.

RE: THROTTLE POSITION
 

You would have to rotate your carb 180 to do it that way. With the throttle in the center (as he has it) the pushrod would hit the engine.

RE: THROTTLE POSITION
 

MinnFlyer, I'm impressed;);)

RE: THROTTLE POSITION
 

I don't have a Magnum .91 but on my old Magnum .66 and most every other engine I have, there is a set screw or some other way to move the position of the throttle arm. Check closely and there's probably a screw you can loosen that will let you move the throttle arm without moving the carb rotor. Then you can move the arm to below the carb centerline so it points down and the pushrod run will be easy.

Dave

RE: THROTTLE POSITION
 

I never had to. If you take the picture you posted you just go past the carb, then the bend brings the rod back at the proper height and the flex in the bend takes care of any misalignment. I did it on a 60 Cloud Dancer with a Magnum .91 I flew it for five years without ever having to take the cowl off.

RE: THROTTLE POSITION
 

I use a similar method when needed, only difference is I always use 2-56 ball links ( eg GP GPMQ3841 ) for my throttle connexions. I have never had one fail, and they make hooking up and disconnecting very easy. They also break the metal connection on the link rod

RE: THROTTLE POSITION
 

Im going to have to look again for that set screw.  My first thought was to move the throttle arm position.  Not having done that before I didnt consider a set screw.  I removed that carb and the barrel but it looked like it couldnt be repositioned.  My mistake my have been not looking for a set screw.  I will check that tomorrow.  Its been solong since Ive done this I have forgoten all the methods available to make a connection.  Keep the ideas coming guys.  It is much appreciated.

RE: THROTTLE POSITION
 

Here's another way to do it
http://www3.towerhobbies.com/cgi-bin...?&I=LXD939&P=7

RE: THROTTLE POSITION
 

Disassembled my old Magnum 91 for clean up and inspection. Noticed that at top dead center my cam dot was positioned straight up. When i looked in the manual it says it should be looking down toward s bottom of crankcase. Does anybody know where it should be?

RE: THROTTLE POSITION
 

Remember on a 4 stroke engine the crankshaft rotates 2 times for every revoluton of the cam, so there are 2 TDC centers per every revoltion of the cam. So if you turn the crank one more revolution, the cam will be in correct position per the book, no need to change it. Hope I was some help here...