I am building a small model for Lambert Kolibri. In an attempt to make things simple I elected to use High Voltage rated servos on the flying controls (JR DS378HV) direct with 2s Lipo. A change of plan from hand-launch to fixed undercarriage means that I now need a steering servo. I am not too keen on spending $75 on a nose steering servo for this model.

Has anyone used 'normal' servos (such as Hitec 65MG) on 7.2V? If so, how long do they last?

Is there an easy (small/light) way to drop the voltage for the one servo? I have seen the Align step-down but this only drops 0.7v which I'm not sure would be enough.

Thanks

Easy fix. Here's what you need.

http://www.horizonhobby.com/Products...odID=SPMVR5203

Spektrum makes a small, light inexpensive voltage regulator that works in-line with up to two servos. I installs in-line, and allows the rest of the airborne system to operate on battery voltage.
The part number is VR5203, price US $29.95 ea.

See it on the Spektrum website....

A fully charged lipo is around 8.4v, which will fry your HS-65. The suggested regulators in the above post is your best bet.

Thanks guys. That will do the trick

By the time you get the "cheap" servo and a regulator, you will have almost bought the good servo, and added another failure point plus extra weight of the regulator.

Just a thought.

also some nice light options here

http://www.smart-fly.com/Products/Regulator/4.htm