Looking at the test track with baited breath, you watched Prototype 0-2 making the rounds. After 0-1's fatal failure and structural loss, you were making absolutely sure this mecha was being documented in every way possible. In addition, the cockpit radio was running hot, with the new test pilot running things. Vans wasn't a particularly inspired test pilot, to be sure, but he was very respectful of the gauges and was more than willing to talk. His running commentary was getting transcribed for future reference, as well as to help brief the second new test pilot: Chompevsky.
Once low-speed trials were finished, high speed came up quite naturally. At thirty kilometers per hour, the nose wobble was completely gone. It stayed gone, too, until the mech's gait picked up to fifty-five kilometers per hour and the roll cycle started intensifying. According to cockpit instrumentation, it was holding steady at about four degrees off centerline in the roll, and nose yaw wasn't above ten degrees.
You still capped the speed there: some other morons could do testing beyond that. Cornering tests, meanwhile, showed that at everything slower than forty-five kilometers per hour, the mecha was very stable. At forty-five, though, the turning radius had to be either incredibly shallow, or the mecha would start to have some very dangerous-looking yaw characteristics that tried to push into a roll, forcing the test pilots to max-rev the gyro and pull out of the turn. While nobody got hurt, per say, Vans did put Unit 0-3 through the barriers and instituted a pretty bad fall into the berm around the facility. While the mecha's undercarriage was hideously banged up and the chin machine guns were once again utterly wrecked, the rest of the mecha was fine and Vans only had to retire the day with a mild concussion.
Once walking tests and other ground testing was done, you put together your current progress report to Hotchkiss, and got the rest of the initial five-mecha prototype batch up to current standards. About two-thirds the way through, word came in: you were to take all current mecha to Brest for weapons integration testing. Apparently, someone had only just now told Corporate that Renault was finally sticking their neck in the military mecha show, with a bipedal, hunchback design mounting some lunatic new weapon: an 80mm gun-mortar with a revolving autoloader, as well as a pair of Riebel machine guns.
Brest was… it was Brest. Damp, windy, and full of Navy pukes staring at you for the temerity to bring a mecha into their gunnery training ranges. That didn't really matter, though, as you had rented out sufficient offroad cargo-hauler mecha to get your prototypes in, and an off-base mecha shop. Getting everyone to work was much easier this time, thanks to the fact you'd all done this before, as well as the fact there wasn't a competition this time.
It took about three days to get all the non-weapons testing done- off road, endurance, field repair, basic training- and then came weapons testing.
For this, the plan was simple. You weren't trying to figure out if the weapons were accurate or how easy they were to use: right now, you were figuring out 'would the weapons damage themselves in the course of normal operation'.
To that end, you started with the machine guns. Since they only had 90-round magazines, you weren't worried about the problem where they'd rattle themselves to bits. Instead, you were worried about access and reloading, and as it turns out, you were right.
While initial testing had no problems emptying the drum mags, the problem was exchanging them for filled ones. Eventually, the compromise technique was developed of 'kneeling' the mecha, for the reloader to pop out using the underside escape hatch, unlatch the rear panel, and then disengage both drum magazines, and retrieve fresh ones. The loaders- conscripts recruited from the Army garrison- bitched mightily about this arrangement, and were deeply unhappy with the concept of potentially dismounting under fire.
Continued testing, however, revealed that the chin turret had one significant and unforeseen flaw: specifically, piper drift. The reflective synthetic gunsight was a useful tool, but it wasn't slaved to the mounting. Instead, it operated off a parallel interpretation of input commands. What this meant was that as the turret continually lost zero due to recoil, mecha vibration, and God's hatred of machines, the piper became continually more and more unreliable. A field-expedient repair was cooked up by re-zeroing the piper to the turret, but once again the loaders bitched about this as they had to tie a pole to the gun barrels so the driver could see where the guns were pointed.
Then came the Soixante-quinze's testing, and oh, how you were biting your nails for this. Unlike with the machine gun testing, the flaws you found were many, and all of them were not kind ones.
First and foremost, your team had badly bungled the redesigned recoil system. The problem was, the gun normally had a 90cm recoil path. This wasn't really acceptable, so when it was rebuilt for your mecha, Niels and the armaments team had built a new hydraulics arrangement that, on the trial stand, had cut the recoil path down to about 45cm: just enough room for the old shell to stay on the recoil trail for the loader to kick out of the mecha via a special slat in the belly armor. In testing, however, the recoil absorption was incredibly subpar, to the point that the pilots were reporting significant nose-up at the instant the system ran out its recoil stops.
Second, the feed system and loader's compartment was totally unacceptable. Every step in the loading cycle was fraught with issues. Inserting a shell required a straight kick, followed by a careful maneuver to close the breech: loaders had great issue making sure the shell was fully inserted and the breech totally sealed. On firing, the mecha bucked wildly, resulting in loaders grabbing on to many things they shouldn't, causing nearly a dozen conscripts being injured in the process, with resulting issues ranging in severity from bruised fingers to an amputated foot (as said foot had been resting in the recoil path of the gun on firing) causing much tirade from the base's commander. On shell ejection, the shell rarely completed ejection fully, frequently striking the backrest of the system, and becoming stuck in the breech as they bounced forward back towards the gun.
Finally, and most critically, the gun was severely limited in firing ranges due to limitations of the mecha. This required a little explaining.
Due to weight issues, you and Gregorie had designed the mecha to have a permanent five degree pitch up at the nose in resting configuration, which would steadily 'droop' as the fuel tanks and ammunition racks in the rear of the vehicle were depleted. Therefore, in standard operation, the main spinal spar was at five degrees up pitch. Niels, then, to maximize recoil travel length and structural integrity, then mounted the Soixante-quinze at a negative five degrees relative to the main spinal spar: in short, in normal operation, the gun would be level to the ground.
Now, you had foreseen this might be a problem, and wanted to mirror the standard trailer's twenty degree elevation, which in turn meant elevating the main spar to twenty-five degrees on account of the cannon's inclination.
What happened when you tried using the gun at this position, well, was not pretty. On firing, the shell launched, the gun recoiled, and then math failed you as the legs on your mecha folded up with a scream as actuators gave out and it fell to the ground, ass-first.
Preliminary investigation revealed that the system had flat-out failed after the pilot had felt the mecha rock over the redline for pitch and therefore thrown the gyro and hips into a full downward press. Your preliminary estimate was that this couldn't compensate for the inertia of the armored nose, which had less downward weight due to the high angle, and as such couldn't handle the recoil of the main battery.
Testing revealed that +20 degrees on the mecha did not suffer the same failure, although relative 'bucking' of upward pitch did increase with higher angle fires, so the theory that the nose wasn't able to help control recoil was going to likely be part of whatever solution you came up with.
With weapons integration coming up mostly green- and yes, you checked, according to your liaison from the Army, this was a pretty good showing, you were sent back to the factory with an official notice: trials were going to be in six months, to allow for the adoption to come in with the 1928 fiscal year, first quarter.
According to your napkin math on the train ride back, that was exactly enough time to fix one problem with the mecha. Maybe two, if they were small ones.
-/-/-/-/
Votes
[] Fix the actuator arrangement so you don't have more catastrophic blowouts, and while you're at it see if you can perk up the gyro to improve handling. The automatic system works, but you know it can be better.
[] The gun. That damn gun. Recant against your personification of hubris, and find something smaller to fit in there.
[] The loader's compartment. Obviously, there were issues with how things went, and frankly speaking you knew, at least a little, that this would probably need some touching up.
[] The chin turret. Between the piper drift, the short magazines, and the reloading issues, you need to get that whipped. That might mean replacing one of the heavy machine guns, might mean finding out if you can get custom belt adaptors, you don't know. What you do know is this needs work.
[] General fine-tuning. Everything works fairly well according to the Army rep, and he's the sort you can trust not to talk out his ass. If you spruce the main items up and trust that you can submit revisions later, then anything that bites you in the ass should be rectifiable in the long run.