Quote:
Originally Posted by RV7ator
.....Electric pitch eliminates the big knob and cable loop that eat up leg wiggle room.....
|
For the weight conscious aircraft builder seeking accurate data, this perennial topic is a very good place to make a direct comparison devoid of personal bias. Die-hard fans of the manual system may be unquestioningly fond of their preferred choice of trim system but such ardor cannot lessen manual trim's one truly significant drawback....weight. The heavy steel cable assembly that is the very heart of the manual trim system tips the scales at a hefty 2.5 pounds. That substantial amount of weight
does not include the required turning knob, mounting bracket and associated installation hardware. Are the sum of those parts effectively reducing leg wiggle room some builders report?
By way of direct comparison, the total installed weight of an electric trim system is approximately 7-8
ounces. Do the math and then decide if you comfortable with a manual trim system that is at least
5X heavier than electric. VAF members have reported that Van's chooses to install electric trim in its own factory built airplanes. Why is this so? If actions speak louder than words, Van's clear preference for electric does not exactly shout a ringing endorsement for the virtues of its manual trim system.