Hi guys, i have recently fitted an OS 1.08, and to my suprise it has a ball link set up for the carby. Problem is, the link is very stiff and a servo wont be able to push it properly.. is there any way of getting around this? Or do someone like Du-Bro make a ball link connector (for the pushrod to connect to the carby) that is a better smoother fit? Thanks, james.

Dubro makes a couple of different sizes. You get the ball link ends in a package of two ( ball, socket, threaded rod, set srew and small lock screw) to be CA'd or soldered to your wire end. I have this set up on my 4 star, works very good.

Yeah but will these fit onto the factory OS ball on the carby? I don't mean i want to run a ball link set up, i mean that the engine comes from factory with a ball link on the carb, but the connector for it they give you is too tight and stiff and is highly restrictive, so i need to find something smoother.

doesn't the ball assembly itself come off, threaded with nut opposite side of the ball?

You might have better luck posting this in the engine forum.

Jim

Solved it this morning Went to the LHS and had a look at another OS item, and it was the same, still tight.. and there is no company makes just the ball shank/link they all have the gold swivel ball already in.. so i picked up a Du-Bro 2/56 ball link kit, and pressed out the ball.. it fitted perfect and MUCH MUCH more smoother than the OS item.. Thank god for Du-Bro.

Glad you found a fix but all you needed to do was lightly squeeze the nylon link (while it is on the metal ball) with a pair of needle nose pliers to free it up. I have done this on both my OS 1.08s. This is a trick some heli fliers use to free up ball links.

They do it but its not really a good idea.

They also make a link sizing tool that you put in the link and spin it around a few times to free it up. All you need to do is take a spare ball, scuff it with some pliers and mount it on something to make a handle.

I have a OS 108 and found the proper ball link clevis at the hobby shop. Comes several to a pack and they work smoothly.

Carl

Yeh mine seems to be excellent now, nice and smooth movement, yet still has enough firmness to ensure it wont pop off.. i think it was that the OS link is in metric and the Du-Bro is imperial, the slight difference in tolerance between the measurement types was what allowed the better movement. All good now tho!! Now i found tho that the stock muffler on it marginally hits the firewall with the engine side mounted, so now i gotta hunt down a Pitts Muffler and another $100+AUS :S Ah well never ending i guess lol