Greetings,
With reference to the "cable run' next to the cockpit.
I have worked with many heavy and armoured vehicles before and can tell you that on most cases, a cable run that will not be moved is always placed under or covered by an armoured rail. The cable run you show has 3 bends, one over 120 deg's, (not good for cabling) I would suggest a few 90deg adapters. Or just place everything under a cover.
The ammo feed on the side: Most rapid fire guns use a feed rail to keep the ammo belt from bouncing and causing a misfeed. Look at images of Mg's on Helo's or on armoured vehicles. (flexible ammo rail guide, maintains tension and alignment of ammo belt. Also keeps out fouling material[dirt]) If the belt moves outside the body try to reduce the "hang or droop" as this would cause twisting and jamming in the feed line, mech's would tend to have abrupt/jarring movement and shock as well as incoming fire. Ammo belt breaks, that's the end of that weapon. (If a closed and armoured feed line the belt would be cycled through to the breach and "weapon online".)
You may even want to look at "caseless" ammo which comes in "blocks or magazines" as opposed to belts, empty mag ejected, next mag inserted.
As a note here, belt feed weapons only feed one breach unit. If there are more than one barrel, either the barrels move to the breach or the breach moves to the barrels.
Just some observations, Mech looks really great.
9erRed.
Edited by 9erRed, 15 June 2013 - 07:34 AM.