Miss Bud servos

[hederjr]

Im considering changing the servos in my 1/12 miss bud in order to increase the torque and response speed on the rudder and reduce weight. However I need to justify the change. The current servos in this boat are jr z270 which have 49oz/in @6v and .19 secs @ 60deg. What I need to know is:
1. Is 49oz/in of torque needed for the throttle?
2. If not what would be a minimum torque used for the throttle servo?
3. will 1-2oz of weight loss in the control box make a difference in the
performance of the boat?
4. Is there anything I should avoid when picking a servo for the
rudder/throttle.

[Ron Olson]

For the throttle you can go small. I've been using Hi-Tec HS81-MG servos in most of my boats now for the carb. It doesn't take much to move the barrel. The only thing is that because it is smaller, you're going to have to adapt the servo mount, no big deal.

[Watercadet]

I ran a Hs-55 in my bud for a while. It is about the size of a $.25 . The barrel is nothing to move. I used ShoeGoo to mount my servos and the old mounts came out anyway. The weight loss is not signifcant. I would go for the steering servo that fits your budget. It is my opinion that the HS-81MG that Ron mentioned would work for steering in the 1/12 bud. It doesn't take mutch to turn a hydro. However with the standard sized servos you get a stronger gear set that is valuable. I now run a standard Airtronics 102 servo in mine. I did however change the pushrod to a 4-40 rod with steel clevis and rataining spring that removed much of the steering slop.

[Hydro Junkie]

I have to agree with Ron and Watercadet on the servos, but disagree with Watercadet on the weight factor. If your Bud is an unmodified stock boat, any weight you can get out of the back will have an effect on how it performs. I know on the 1/8th scale hydros, the set up desired is 1.5 pounds(+1/4)at the prop. By keeping the weight down, the boats are less dependant on a lifting prop and can use props with a higher pitch and/or more diameter for more top end. As your boat may never see racing, it's not as important as on dedicated racers, but can make a difference.

[hederjr]

Thanks guys!!!