Hello to all RCU
I am new to the r/c airplane sport and also this web site. Although I have spent many hours reading the great info here I still have a question on my current project. The first plane I purchased was a Hanger 9 arrow trainer and so far all is well , haven't planted it yet....
I aslo purchased a twist and a saito 82 for my second plane and am struggling to hook up the throttle linkage. I purchased a du-bro 4 stroke throttle linkage kit but am to thick headed to figure out how it should be installed. Seems like there is no room. Maybe different motor mounts?
I have read many posts but haven't found an anwser yet.
Can someone help or guide me to the correct post? Maybe a magic man.......
Thanks

The answer is simple.... the Dubro linkage mounts to the engine bearer, with the 'arm' pointing up (assuming that the engine is mounted vertically. The pushrod from the throttle servo goes to the bottom of this arm. Another short rod goes from the top of this arm to the engine throttle. There should have been a picture on the inside cover of the Dubro package describing this.

You can also make a link to your engine without the Dubro 4C arm. It's even simpler to do, but more difficult to describe without a picture. Maybe someone else will read this thread and post a photo. If not, I'll take the cowl off my Funtana and take a picture.

Let me try to describe it. Try to picture a very long throttle pushrod (made of stiff wire) that goes from the throttle servo out about 4" beyond the prop drive washer. Now, make a 180-degree bend back towards the firewall with this wire, such that the bend should now be behind the prop, (so that it doesn't interfere). The bend should be gradual, like the shape of the letter "U" resting on its side.

The end of the pushrod should now be near the rear of the engine, near the carb's throttle arm. Trim the pushrod to fit, and fasten it to the throttle arm using your favorite method (ball link, EZ connector, etc).

On the Saito, you can rotate the carb (if necessary) so that the throttle arm on the carb is on the same side of the engine as the pushrod.

Break that Saito in carefully, per the directions. It's a very sweet engine. I have one in my Rascal 40. Prop it so that the engine revs stay below 10,000.

I hope that my description is helpful to you.

Bob

Hay Thanks N1EDM
There is a picture but there is little room on the side . The pict shows to mount the arm into the side of the motor mount, the inside is the motor the outside is the insine of the cowl.. The only place for mounting seems to be on the bottom of the motor mount. I think i get the pict of making a u shaped bend in a long rod and running it back to the servo.I didn't know about rotating the carb. Maybe that what I will need to do.
If time allows a pict would be a big help.
Kudo's to ya...

I just happened to find my issue of RC Report's "Here's How... Volume 1". The cover has a photo of what I'm referring to. (I'm assuming that the cover is public domain, and I'm giving the editor credit, so that shouldn't be an issue). The book has a lot of nice ideas in it.

The carb on the Saito can be rotated so that the throttle arm can come off either side, so rotating it isn't a problem. Just be careful not to lose the O-ring on the intake stack.

Let me know if this helps...

Bob

In the arf forum there is a twist topic - the last 4/5 pages have close up photos of their 4 stroke instalations - you can see their throttle hook ups - your carb can be turned 180 deg if needed also.

OK Thanks a Bunch
Now I think that I am gettin somewhere. Thanks Bob ,I get it now sorry I am a little slow sometimes and also a new bee to all this.

Kudo,s to ya Delman , I will start looking thru the arf forum.
Appreciate the help...

No problems... the 'word picture' was a little difficult to try to comprehend. I'm not sure I understood it myself, and I'm the guy who wrote it!!

I'm going to check out that "Twist" thread myself and see if I can pick up some new ideas....

Bob