alchemist
Senior Heliman
Location: London,UK
| From what I can see if you set the tail mechanically so the rear tail bellcrank is at 90 to the boom exactly, then you basically need somewhere in the region of 17-19mm on the servo horn so that you have enough throw from the mechanical mid-point to both endpoints eg: a short horn results in limited mechanical throw.
The stock large JR round horn is 16mm approx on the outter most hole so at a fixed midpoint of exactly 90 to the boom you can't make it to the mechanical extremes (pretty close though with modified gyro endpoints).
Should/can I ignore a mechanical center of 90 and just set the tail slider to its midpoint?
I'm sure it will be fine but I like things perfect if possible. I would like a servo horn for JR like the huge round stock futaba one.
Bob Finless on helifreak mention the tail geometry for the horm was 19mm, but he was using futaba so he had the large horn.
To every action there is always opposed an equal reaction |
