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*hello guys hope everybody s well . Finally i finish building my gel blaster works well sound well but it do not fire the gel ball it keeps crunshing them i dont know what the problem is i put a thing that delay the return of the tappet still the same can ayone help me
Need details of what parts you have used and changed in the build, then we can provide ideas on how to sort it.
Everything seems ok eoengagement , rate of fire al seems ok but the gel keeps crashing in the t piece i dont know why i check everything the problem petsist thevgears is 13 to 1 as you ve seen in the video all works well i see the crushing gel in the mag. well crushed i dont know why
Got a link to this video?
What is the blaster brand?
And what are all the parts you have changed?
What gels are you using and what is your growing and storage methods?
Without information you probably won’t get advice that actually helps you issues.
There is no brand i build this by myself it is a nylon SLR receiver , a 13 to 1 shs gears and a chihai motor i bought al the parts and build it it took me some time to do it a lot of trial and error but what you ve seen is the final profuct just it wont shot that s why i ask i am myself new to gel blaster but ive watch many videos like cyber trigger. Low guidos nobody gel blaster and so many i learned by watching these videos i wanted to make one by myself i wanted it to look more realistic nylon receiver SLR ,metal handguard i bought every pieces to build it lts just i am not expert enough to make it shoot normally
i am also using a cnc 7075 metal gearbox
Did you find any solution for the problem if you ve any ideas let me know thanks
Already did wrong video mate 
What should i do you tell me ok
A ChiHai motor is very broad statement, they make hundreds of different motors.
As does a CNC gearbox, there are many.
Often many issues are gel related- cheap gel will mash.
Over grown gels will jam.
under grown gels wont feed… etc
There are so many gels, and variables in growing them that very often the gel is the issue, but being a custom build there may be something else.
It could be a nozzle issue, there are many different nozzles, and t-pieces. And while some are compatible with other gearboxes and t-pieces, many times you need to use a particular nozzle/gearbox/tpiece combination.
Can you upload some pictures of the gearbox and internals?
Or provide links?
It’s all good I’m trying to point you right direction is all . Guy above kows his stuff watch his youtube channels a very good laugh Certainly Friday night entertainment
I reckon the gel are cheap chinese gel ball but i put photo of everything ok
That motor with 13:1 on 11.1v is gonna be about 45rps, which is mental.
On a good 7.4v will be more around 30rps.
if you plan on using 11.1v, you will be wanting a lot of short stroking, and a M120 or bigger spring to avoid PME and so on… and you inner barrel will need to be quite short if you want any FPS consistency.
As for the nozzle and tpiece. JinMing nozzle with SLR t-piece is not compatible.
That style of gearbox normally just use LDT tappet, nozzle and t-piece and it will be good to go. You will want to trim the tappet plate to suit higher rps too, and make sure the nozzle moves very freely.
My notes on the build:
My advice on the build would be speed motor, and speed gears is not ideal. usually 13:1 a 30-35k motor is a good build that will do around 30-38rps, which is honestly as fast you want a SSG build, which normally you would need to use a barrel around 200mm.
Given your blaster looks like a full cylinder full stroke barrel length sort of build, I would be topping out around 25rps for reliability, maybe up to 30rps if you dont mind having an m110 spring and the power around the 360fps mark.
Longer barrels do not lend themselves well to higher rps without bigger springs, resulting in higher fps.
If you were to change to 18:1, you will still be around 30+rps.
Either way, you do not want to be using cheap gels, and you definitely want to make sure they are not going to cause a jam during use.
Hope this helps.
it seems i have not given you the necessary information the barrel is 35 cm , the spring is M150 , the last teeth on the septor gear is grinded i am ordering some hard gel to try on the gun i will try to buy the parts you recommended will let you know of any progress thanks for taking your time to answer me and though you said that people dont like when youswear on your youtube channel l ike very much watching you i find it not offending but rather funny thanks again bro
M150?
Damn, this fellas going for a new world record 
contrary to AUS. where fps is limited there are until now no definete rules for gel blaster here though you cannot buy whatever you want online the gel blaster gun are dsold in shop here so if its 400 fps or more does not matter but for the better until rules are applied
Chances are that M150 spring isn’t helping your problems… along with all the other things RokSolid mentioned. Maybe re-read and absorb his reply. 
M150 with short-stroking… yep. But with a high speed motor and 13:1 gearing on a full stroke sector? Well…
Ambitious, I’ll give ya that. 
so i should use an M120 or M130 that good anyway i am dismantle it and rebuild it and mostly took any time needed to fine tune it i will post the result as soon as i finish . the parts i am buying to do as RokSolid said will take time to come anyway at a month i must wait for the parts so as soon as i finish testing i will post the resultand i can hear RokSolid saying that fu… idiot is not listening to the fu… he is given lol
M150 will very likely be a factor of mashing gels.
Even if 500fps isn’t smashing them, you will really struggle with accuracy. It’s hard enough at 400fps, even with the best gels you can find. Anything but ultra hard gels will confetti in the barrel at those pressures for sure.
I would be more concerned at how long it will last.
Those gearboxes will handle an m110 seemingly forever. See a few use m120s on them but I do know guys that have tried m150 DSG builds and the spring retainer breaks out the rear end on them.
With 35cm barrel I personally would stick to an m110, and wouldn’t go over 30rps. Actually tbh I wouldn’t go over 25rps on a full stroke full cylinder long barrel build. Purely as they have no accuracy, and you are always one oversized gel away from a jam and catastrophic failure.
Generally if I am hitting 30rps, I wouldn’t build it in something with anything longer than 275mm barrel. It’s safer is all.
