Not there yet and have not had to address the problem but it appears that my model set the servo up on one side of the tray for the throttle and the ARF is designed to have the linkage exit on the left side as you are looking at the firewall.
But the linkage on my Saito 82 is on the right side of the motor as I look at the firewall where it will be mounted in the future.
Does the linkage reverse on the motor or do you move thelinkage from the servoto the other side?
Or is there another solution?

I am not familiar with your specific engine, so I dont know if the carb is reversible. It is very easy to swap the linkage to the other side of an ARF to accomodate the engine you plan to use. just make sure that your new route will not interfere with the fuel tank installation and route it where you need it. I use a long drill bit, or a sharpened coat hanger to make the holes in the formers and fire wall to route the pushrod.

You can remove Saito carburetors and flip them but that tends to put the throttle arm in a small space. Try it and test fit before you cut anything. I think you will find that you will have to modify the fusalage anyway.

Do you mean a small space on the motor or for a cowl mount?
This is going on a Stick so there is no cowl as such.

It's no big problem. Just remove the carb and rotate it 180 degrees and re-install. The arm will then be on the other side.

On some engines, turning the carb around puts the throttle arm behind the cylinder which can make it harder to connect the pushrod or cable. I think the "small space" is the area between the engine and firewall.

I'd turn the carb around and test fit the engine to see if the linkage will work with the existing pushrod location.

Thanks. Knowing it turns around will help.
It will be just a bit yet before I am ready to mount it.

As the others have said, the carb can be removed and mounted 180° in order to facilitate connecting to your throttle linkage. There may or may not be another issue with the carb being so close to the firewall. Many have problems when mounting 4-stroke engines with the carb being so close to the firewall that they have troubles connecting the pushrod to the carb. To fix this run the pushrod past the carb and bend it back 180° and then connect it to the carb throttle linkage.

Ken

Thanks for the tip.

For some reason engine manufacturers feel the need to put the throttle linkage on the 4-strokes opposite of their 2-strokes. Easy to run a new pushrod. And the hairpin, as RCKen shows, helps a bunch for clearance on rear-carb engines.

Another nice thing about using the "hairpin turn" as Ken suggested is that you can also use the same technique to keep the push rod from the servo outside the fuel tank area and when you make that hairpin turn bring it back closer to the cylinder (makes it easier to route the pushrod around the tank without creating undue friction).

I would not "remove" the carb on the Saito. Just pull the two screws out that hold it to the back plate. Swing it off to the side while holding the intake tube into the head. Spin it on the end of the tube. Then rotate it back into place and put the screws back in.

David

Hey,

I had this same issue. I also decided to spin the carb and do the hairpin pushrod. But I just cant get the carb movement I need. Its like the rod flexes too much to go full throw. Ive changed the hole on the carb end. Now that i see this is normal to do, I am going to try Harder to get it to work

As stated I have not tackled it yet.
I am however wondering if even though the servo tray puts the servo on the wrong side why I could not just turn the servo around and route the control wire to the side the carb is on.

My big issue has always been to have the mixture screw on top. With the carb in the stock position the high speed needle is around the muffler.

david

I thing (I may be wrong) that your model is designed for a 2C engine[8D]

Ameyam

Not according to the Specifications shown in the manual for the Hangar 9 Ultra Stick 40~~

<h2><font size="4" face="HelveticaLTStd-BoldObl"><font size="4" face="HelveticaLTStd-BoldObl"><p align="left">Recommended Setup&ndash;4-Stroke Glow</p></font></font><font size="2" face="HelveticaLTStd-Cond"><font size="2" face="HelveticaLTStd-Cond"><font size="2" face="HelveticaLTStd-Cond"><font size="2" face="HelveticaLTStd-Cond">

&bull; Saito<font size="1" face="HelveticaLTStd-LightCond"> </font><font size="2" face="HelveticaLTStd-Cond">.82 AAC with Muffler (SAIE082A or SAIE082AGK)</font></p></font></font>So I don't thing so!</font></font></h2>
And this is from the website~


<table cellspacing="0" cellpadding="0" style="border-bottom: medium none; border-left: #aaa 1px solid; margin-top: 5px; border-top: #aaa 1px solid; border-right: #aaa 1px solid"> <tbody style="border-top: black 1px solid"> <tr> <td style="border-bottom: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; width: 150px; padding-right: 5px; padding-top: 5px">Wingspan:</td> <td style="border-bottom: #aaa 1px solid; border-left: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; padding-right: 5px; padding-top: 5px">57.75 in (1467mm)</td> </tr> <tr> <td style="border-bottom: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; width: 150px; padding-right: 5px; padding-top: 5px">Overall Length:</td> <td style="border-bottom: #aaa 1px solid; border-left: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; padding-right: 5px; padding-top: 5px">51 in (1295mm)</td> </tr> <tr> <td style="border-bottom: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; width: 150px; padding-right: 5px; padding-top: 5px">Wing Area:</td> <td style="border-bottom: #aaa 1px solid; border-left: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; padding-right: 5px; padding-top: 5px">700 sq in (715 with quad flaps)</td> </tr> <tr> <td style="border-bottom: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; width: 150px; padding-right: 5px; padding-top: 5px">Flying Weight:</td> <td style="border-bottom: #aaa 1px solid; border-left: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; padding-right: 5px; padding-top: 5px">5&ndash;6 lb (2.3&ndash;2.7 kg)</td> </tr> <tr> <td style="border-bottom: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; width: 150px; padding-right: 5px; padding-top: 5px">Engine Size:</td> <td style="border-bottom: #aaa 1px solid; border-left: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; padding-right: 5px; padding-top: 5px">.40&ndash;.46 2-stroke, .56&ndash;.82 4-stroke</td> </tr> <tr> <td style="border-bottom: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; width: 150px; padding-right: 5px; padding-top: 5px">Radio:</td> <td style="border-bottom: #aaa 1px solid; border-left: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; padding-right: 5px; padding-top: 5px">4 to 6 channel</td> </tr> <tr> <td style="border-bottom: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; width: 150px; padding-right: 5px; padding-top: 5px">Servos:</td> <td style="border-bottom: #aaa 1px solid; border-left: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; padding-right: 5px; padding-top: 5px">5 standard servos; 2 additional standard servos for optional quad flaps</td> </tr> <tr> <td style="border-bottom: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; width: 150px; padding-right: 5px; padding-top: 5px">Trim Scheme Colors:</td> <td style="border-bottom: #aaa 1px solid; border-left: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; padding-right: 5px; padding-top: 5px">True Red (HANU866); White(HANU870); Black(HANU874)</td> </tr> <tr> <td style="border-bottom: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; width: 150px; padding-right: 5px; padding-top: 5px">Prop Size:</td> <td style="border-bottom: #aaa 1px solid; border-left: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; padding-right: 5px; padding-top: 5px">11x6 - 14x6</td> </tr> <tr> <td style="border-bottom: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; width: 150px; padding-right: 5px; padding-top: 5px">Hardware Included:</td> <td style="border-bottom: #aaa 1px solid; border-left: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; padding-right: 5px; padding-top: 5px">Includes all hardware</td> </tr> <tr> <td style="border-bottom: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; width: 150px; padding-right: 5px; padding-top: 5px">Recommended Battery:</td> <td style="border-bottom: #aaa 1px solid; border-left: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; padding-right: 5px; padding-top: 5px">JR 6-volt 2300 Ni-MH (JRPB5006)</td> </tr> <tr> <td style="border-bottom: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; width: 150px; padding-right: 5px; padding-top: 5px">Assembly Time:</td> <td style="border-bottom: #aaa 1px solid; border-left: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; padding-right: 5px; padding-top: 5px">7-9 Hours</td> </tr> <tr> <td style="border-bottom: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; width: 150px; padding-right: 5px; padding-top: 5px">Is Assembly Required:</td> <td style="border-bottom: #aaa 1px solid; border-left: #aaa 1px solid; padding-bottom: 5px; padding-left: 5px; padding-right: 5px; padding-top: 5px">Yes</td> </tr> </tbody></table><h2></h2>

Ummm, how bout something like this? Used it when we did an engine change on a car where the throttle linkage was on the opposite side from the removed one.

That's not a bad idea, though there's a chance that it will interfere with the engine mount.

That does not appear to be a bad idea either. I am not sure what it would do to the torque values on the servo but I am also not that sure it would matter all that much to a standard servo on the throttle linkage.

That is a good idea. On the Saito though, the linkage is going to be in the center of the firewall(almost) and not on the far side. Once you flip the carb it will be on the far right side.

david

Well talking to a guy at the club he said just leave the linkage where the factory put it which is on the far right side looking from the front of the motor.
He said to use a support bracket at the servo and piano wire in a plastic sheath to route the wire to the opposite side of the fuse to get it where I wanted it and then glue the other end of the sheath where the wire exits.
Sounds like a plan to me.

Why not just leave the engine as it is and put a sullivan wire?

OK, I will bite, what's a Sullivan wire?
Now I will have to look that up.
I saw what I think you are talking about at the local hobby shop the other day with a Sullivan label on it. It was a plastic sheath with wire rope to run through it with some solder connectors included.
Is that what you are talking about?
What I saw, and maybe they come in different sizes, looked like it was really overkill for throttle linkage for an 82.


On edit, I looked up Sullivan RC Products as I had seen their website once before. It appears there are many types of control other than what I saw the other day.
It appears that I may have to make an order over the internet however as my little local shop does not carry anything like I like on the website.
Maybe that's why the local guy at the club suggested piano wire in a sheath as we can come up with that stuff locally.
When you live in a small town you have to get creative sometimes to save shipping.

If you have the plane, see the manual beginning with step 6 on page 32 and ending on page 34
Online manual http://www.horizonhobby.com/ProdInfo..._40_Manual.pdf

Carrell