Pseudotectonic

Btw the inner barrel can be stabilised (centered) to the outer barrel if you wrap some tape around it which helps to reduce the barrel rattling and reduce any vibration from travelling along the brass I do it at two points, one towards the front tip and one towards the back near the hop unit, with only two points you won't be applying bending force to the inner barrel if there is any knocks or bending of the outer barrel, because you need a third point to bend a straight object

Take this as example, from this view (and the receiver opening) if you turn the dial down, it means up, the hop rubber will come down, and the BB will go up (seriously just turn counter-clockwise to reduce hop, which is what you are trying to do in your situation)

AEG has several sources of sound: motor and gearbox sounds, piston sound, and muzzle pops Motor and gearbox sound is mostly generated by meshing of gears and all the little mechanisms rattling, which can be minimised from source with shimming and tuning the overall rigidity of the system. Normally this is transmitted via resonance or reverberations through the gearbox and AEG body itself, so if you can dampen this vibration around the receiver area this can be reduced. Piston sound is a loud pop from the piston hitting the cylinder head. Similarly this can be dampened however you want with piston head + piston head combos/trickery, or something done to the cylinder or gearbox or receiver to dampen the vibration and transmission. Muzzle pop is probably not as loud as the above, but first you want to contain the expanding volume of air, and secondly dampen the vibration from being transmitted via the smooth cylinder shape of the suppressor. These are all essentially sound insulation problem and there are several principles for dealing with this. Sound travels through air so any unnecessary air gap can be sealed to contain sound, but this is perhaps not practical for an AEG. Mass absorbs sound, so in theory filling your receiver and suppressor with concrete would be best but obviously this is not practical. Another way is material science, make it less resonant so it absorbs the vibration (i.e. sound) instead of transmitting it into the air, usually this means a suitably soft material, or even better, a composite material like applying 3M 2552 Damping Foil Tape so the vibration is turned into heat rather than being allowed to vibrate freely thus transmitting into the air. Foam does not do much because while it slows the expanding air, it does not really dampen much vibration of the aluminium can that is holding it. So in theory perhaps the best airsoft suppressor will firstly have damping foil applied to interior (to deaden the can body), and then layers of heavy weight acoustic rubber floor matting (the type used for soundproofing floors, use heaviest grade you can find), then the inner most post leave just enough diameter for some baffles (material doesn't matter) to allow the air to expand and be slowed before it travels towards the end of the can, you only need maybe about the same volume of the gearbox cylinder or even less. Then if you put some damping foil on (inside) the receiver and gearbox and cylinder(I have some on my motor) then it will be even quieter, if you are going for ultimate stealth SD6 build. Somewhat relevant video https://www.youtube.com/watch?v=SK9qpGqBBmg you don't need a whole lot to be effective. Only downside is the 3M stuff is expensive and I am still looking for alternatives. This is not normal aluminium foil tape because this stuff has 0.254 mm thick aluminium (~250 micron) as opposed to the 30 to 50 micron thick common stuff, and you can't just double up the normal stuff because it doesn't work that way.

I agree, the wording is vague, "completed" could mean many things, e.g. if all the product information is uploaded, so the advert is "completed" and no further editing is expected if the duration of the listing has expired, therefore the listing duration is "completed", but the item may be unsold and there could be a new listing with the same item if the product is unsold, but the seller withdraw the advert, marking the listing as "completed" While "sold" cannot be interpreted any other way therefore a better alternative

Hit calling will be shit due to low light

Pretty sure you can just replace with the white one https://www.ikea.com/gb/en/p/skadis-pegboard-white-10321618/

what reward?

Wow that is labour and skill intensive but certainly a much nicer result than tape

I doubt very much the 5 mm layer of air is going to dampen much energy from an incoming piston at 300 mph unless there are videos proving otherwise Seems to me it is more for AOE correction

Nice, you cut it yourself? Does it free float or glued down? Yes it should have a little play for free movement, a bit like shimming other gears

I ended up using some 3M VHB tape, seems to stick quite well, time will tell if it holds up

This will prevent the motor tower from dancing on the gearbox opening, hence pinion gear dancing on the bevel gear in use and putting on extra friction and wear, the motor will stay aligned much better and the meshing will be improved, the reduced peak loads from the reduced chatter can improve efficiency by probably a few percent, and it will sound better

How to shim the motor tower: 1. Measure the ID of the motor opening on the gearbox (usually about 10 mm) 2. Measure the ID of the motor opening on the pistol grip (usually similar to above) 3. Measure the OD of the motor tower (usually about 9.x mm) 4. Wrap the motor tower with aluminium tape, first clean the aluminium surface with some alcohol so it sticks to itself better, wrap in counter-clockwise (seen from motor side) so it is less likely to loosen, build up enough layers until you get about 9.8 mm OD or whatever OD that is a close fit but with a little clearance 5. Test fit with a closed gearbox with pistol grip attached, it should insert without any force but with minimum rattle or side movement, rewrap if needed 6. Done! Image credit: - Airsoft Customs custom tower on youtube - 3M Scotch Aluminium Tape - Some random motor from Evike

The muzzle flash LED light can it change colour?

I thought you meant a literal mat

How big and heavy? What battery does it take? What supply does it need? Do you have a spec sheet or product data PDF? Is it reliable and is it going to go up in smoke mid game and explode?

what spring, what gears, what battery?

@Leo Greer just how big is your tool box? That is a lot of stuff

@ak2m4Do you mind sharing what method and equipment did you measure the surface finish RA numbers? Just trying to theorycraft a barrel polishing regime, cheers

lol look at this TM money grab https://www.youtube.com/watch?v=qGPdIHlRYkw

If we are redesigning the gearbox, if we free the motor and gearbox from the conventional form factors we can increase the motor size, increase the durability of gears and housing, and increase the battery space, in actual fact, we can make it a higher voltage system like some cordless power tools already use (in fact we can even model after those)

If we are talking theoretical builds with unlimited budget, I think you need to define "function" first, which comes down to: 1. Electro mechanical systems 2. Ergonomics and play style or usage doctrine For theoretical builds you will be looking at redesigning the whole gearbox which is a whole project Ergonomics is different for everyone and everyone will have different preferences and this is affected by how it is meant to be used / what mission is it for Because without clear parameters it is very hard to talk about what is and what is not suitable

@two_zero are you sure about 1.27mm? That is an imperial 0.05" hex key but I thought generally airsoft all use metric, I suspect it might be 1.5mm instead

good idea

ok so if Airsoft Cymru didn't do the tech work OP is saying they did, then... whodunnit????