Soo… Long story short, got husband of the chef that i work with and her kids hooked on gel blastery, and even thou i told them to run it by me first, he bought a second hand cyma jd-002 long from a mate that was build by a shop after the stock nylon gears stripped.
Ive been working on it for days and i cant get it to chrono higher than 200 fps and thats with an m100 spring, and aka gels. With the spring it came with, 140fps
It Had fake 18:1 shs gears, a FB polycarb piston, yellow ak poms head, green oring, lonex AR latch, (spring on that failed and let the box reverse and destroy tappet and the gear box housing) and a chihai black and red 35k rpm 460 motor
Shimming was potentially off, was very different after I replaced the gearbox housing
i had to adjust the pinion height as the pistol grip base is shite, motor always ran hot as did the battery. Motor has since failed.
Left motor is the motor it came with after I adjusted the pinion height as much as I wanted to, motor on the right is the stock motor.
Poms head was too big for the system and was very very tight. Has stretch the green oring and its useless
I found the hand guard grub screws over tightened, and have marked the inner barrel. Inner barrel wouldnt move freely on reciever. T-piece was glued to gearbox at some stage. End was covered in glue
Swapped tappet with ldt v3 orange tappet from xforce (same profile). System feeds
Swapped chihai with my stock 480 motor from the xyl arp9, and battery no longer gets hot, (was always hot even after shimming.
FB piston wouldnt take the spare heads i had so its running the stock xyl piston, piston head and oring for now. Head has been slightly modified for flow. Confirmed airseal and no vacuum with a gen9 head on the cylinder in the system. It still has the stock head which is leaky, even with TPFE tape.
Heres the odd thing. Its not the head. I have pulled a head and nozzle out of one of my spare cymas, checked and it chronos at 260 with a 1.18 ausgel. Yeah thats low, but the same head and spring in this system is 120-150fps
Im at a loss. Ive tipped maybe 20hrs on this and pulled it apart so often that im on the verge of stripping the thread on the pistol grip for the base plate.
Sooo … anyone seen this before?
AND, does anyone know if the ldt/war interest v3 box will drop into this?