A9 Trim Step
05-17-2010, 03:38 AM
#2
Senior Member
RE: A9 Trim Step
ORIGINAL: bgw45 Does changing the Trim Step value on an existing model change the current trim position?
For those new to adjustable trim steps,place model on a table and watch what happens as you try various settings. As the number rises above say 20, large movements become apparent with only say 4 steps between fully up and down when trim step is set to max..
Trim step has adjustable settings from 1-200 with 12 default (Approx.0.025deg ~ 5deg / Step).
The size of the trim step can be adjusted in the System — Trim Step function menu as attached.
Regards
Alan T.
Alan's Hobby, Model & RC FAQ Web Links
05-25-2011, 05:27 PM
#4
Senior Member
RE: A9 Trim Step
ORIGINAL: A.T. No. Changing the Trim Step does not effect any control surface until the trim button is next actioned. Then the number of steps per "click/beep" changes from the default setting (12 )whichallows rapid adjustment on a first flight. Reducing the number to say 6 provides for muchfiner tuning on subsequent flights. Increasing the the number to say 25 provides for coarse tuning or greater movements per click/beep.
For those new to adjustable trim steps,place model on a table and watch what happens as you try various settings. As the number rises above say 20, large movements become apparent with only say 4 steps between fully up and down when trim step is set to max..
Trim step has adjustable settings from 1-200 with 12 default (Approx.0.025deg ~ 5deg / Step).
The size of the trim step can be adjusted in the System — Trim Step function menu as attached.
Alan T.
For those new to adjustable trim steps,place model on a table and watch what happens as you try various settings. As the number rises above say 20, large movements become apparent with only say 4 steps between fully up and down when trim step is set to max..
Trim step has adjustable settings from 1-200 with 12 default (Approx.0.025deg ~ 5deg / Step).
The size of the trim step can be adjusted in the System — Trim Step function menu as attached.
Alan T.
Sub trims are only used whilst model is being set up -
should never re-adjust sub trims at a later time without a re-set of that model program and start over.
(ex manual page 77)
• There are two screens to the EPA menu. Note the 1/2 Icon.
• The EPA range is O% to 140%.
• Sub-Trim and Dual Rate functions can Impact the programmed EPA values.
Aurora 9 - Programming Chart and attached extracts from Aurora manual may assist.
Whilst written at time of Futaba FF7, 8UAP, Eclipse, Optic 6 etc., believe following is still relevant:
EPA & ATV - Dual Rates differences & Cautions
Service Bulletin TX-20100520 Aurora 9 Transmitter - Using EPA and D/R Functions Create Dead Zone in Stick Travel
We have confirmed customer reports of a software bug involving the End Point Adjustment and Dual Rate functions.
When both functions are at their highest settings, there is a significant dead zone at the stick endpoints.
Until this issue is resolved in a future software update, it is advisable for customers to keep either
the D/R or EPA setting at 125% or less and the other at 120% or less.
Alan T.
Alan's Hobby, Model & RC FAQ Web Links
