Throttle travel insufficient

[koupster]

We're assembling a previously flying RV-6. The throttle cable travel is 2 inches; full travel of the throttle arm requires 2 1/8 inches. Carb is a Precision MA-4-5 installed on an O-360; throttle cable is marked ACS Products Co., A-800BL0445-V. Possible solutions are finding a throttle cable with longer travel or drilling the throttle arm closer to the pivot.

Anybody been there and done that? Any other ideas will be welcome.

Thanks, David

[edsong]

If there is room just drill a new hole in the arm as you suggested. There are quite a few different arm configurations. Short, long, straight, offset. You should be able to get it to work without changing cables. Your local a/p probably has a drawer full of different arms.

Eddy

[lr172]

Drill a new my hole, if you can. My MA 4 has three holes and the closest has a travel well under 2". Therefore, there are arms out there that will work.

Larry

[Mike S]

You can weld the existing hole in the arm, and redrill a new hole as needed.

[Bevan]

If you can change the orientation of the cable to meet the arm at a true perpendicular angle when in mid travel, you may be able to get that last 1/8" of throw. If you drill, you may have to drill so close to the original hole that they become one elongated hole. (not good)

Bevan

[Robert Anglin]

This has come up a lot in the past 5 years or so. You are correct Van's supplied their cables with a two inch travel till a few years back. There are so many carbs., throttle bodies, F.C.U., ext., out there these days. They have started supply of a longer throw length cable. Don't quote me but, something on the order of 2.25 inches. I would call them and check it out. May save you some work and you would have a new cable to boot..
Yours as always R.E.A. III #80888

[Larco]

Many of us back in the day just drilled a new hole in the arm, it worked just fine. Larry

[AlexPeterson]

Keep in mind that a 2" cable really only has that amount of throw when it is straight. Any bends in the cable reduces the amount of travel. There used to be a table for calculating this in the Aircraft Spruce catalog, not sure if it still is.

[beberle]

Definitely a cable problem. I purchased a RV-6A started in 2000 that had a mixture cable w/ only a 2" travel. In Dec, I ordered a replacement from Vans that did the trick. 21/4" travel w/ 2 90deg bends.