Problem with this is... It is a "Master\Slave" set up. The slave servo responds to the master. Simply put, What happens if it's the slaved motor that has the problem? You better be fast on the sticks.
What 5295s' unit will do is COMPLETELY different.
5295. A lot of guys(including myself) are running twin throttles off of two servos and three channels through mixing so each motor can be opperated independently for run ups or in sync for flight. if you can set this up for such a system, that would be the answer to our problems.
Good work!
Incidently, I am building a P38 on 3W 50s. If you can produce one for gas motors with my twin type radio set up, I would be interested in it, as long as it is NOT a master\slave set up.
-M51
ORIGINAL: Robby
Jomar Products offers this and can be seen second page, fouth item down..
http://www.emsjomar.com/SearchResult.aspx?CategoryID=6
Item description is listed as below...
Twin Engine Sync System
Works on “Master-Slave” principle - forces Slave to track Master by controlling
Slave throttle servo. Uses small magnets and hall sensors to sense RPM.
Requires a servo on each engine. 1.5 x 1.5 x .75 - weight 1 ounce.
$89.95
Given the reliability of engines today there is less use of this type of
item plus with radios being able to control seperate throttles or the
use of 'matchbox' type of units makes for even less usage of this
type of item...
Now,, having gone thru all that..

I perosnally think it is a great idea..
( but work on the price some)
Robby