Hi, i just set up my kat 46 with 4/40 pushrods and 4/40 clevisis etc. I did a nice job but now that I really look at the hardware I think I may have gone into "overkill mode"! What do you think, should I step down to 2/56 rods and clevises? The supplied rods seem a little on the thin side to what I am used to using. Thanks again

If weight is not a problem, leave it alone. If weight is a problem, go back to the 256 and use the metal clevis. Happy flying!

4-40 is overkill for a 40 size model. But like Teebox says if weight is not a concern leave it alone. Also be careful with metal clevises especially on the thtottle. Metal to metal vibration is very bad and causes RF interference. I don't like to use metal clevises even on the control surfaces unless I have 4-40 locking nuts as well. Ony do that on the bigger planes though.

I use 4-40 hardware on all my profiles (40 through 100 size). There's no such thing as "too strong" and the weight penalty is minimal (less than a quarter of a tank of fuel in fact).

It also means that I can carry one set of spares to the field.

I used to run 2-26 hardware until I had a pushrod connector fall in half in my hand on my old Katana P's elevator linkage (after many hours and more than a few "unplanned arrivals"). It seems it had fatigued then cracked and it was only because I *do* preflight my models that I caught it in time. I've never had that experience again since shifting to 4-40.

4-40 hardware is overkill for 40 size planes. Much easier to work with and plenty adequate for 40 size models. I use quality clevises on the control surface and "Z-bends" on the servo arm. Never fails unless you crash! Stick with the manufacturers recommendations Bass1. Use good 2-56 hardware and you won't have any failures.