Quote:
Originally Posted by Kos-Mos
Here is my "possible" solution to you problem....
It would need a few modifications to you system... but it should be nice in the end...
Don't try this unless you have the knowlegde to do it... or it will problably fail/break your gun.
Look around on the web to find a Brushless motor. They are around 100$ each usually...
One that possibly will work (not tested yet!) is the CastleCreations Mamba 25 motor. I recommend that you stick to 5000'ish Kv (it is the speed of the motor).
Then use ULTRA HIGH TORQUE gears, and shim them to the perfection. If not your gears/piston/bearings will wear or break.
Also use a 7mm mechbox with ball bearings.
The hard part it to modify the trigger assembly to have the Speed controller for that motor to work. You will have to find a servo simulation circuit and some place to have the esc/servo simulator. Then wire the servo simulator using a Boolean switch (logical switch) to bypass the potentiometer of the servo simulator. Then wire the whole thing and you get a 65000 rpm motor with insane torque. This should be helping with your gear dying all the time. Also... these motors only use about 1/3 of the energy of normal motor and have no maintenance whatever.
Try using stock spring, then upgrade your spring lightly if it works.
*edit* oh and you will have to find a way to fit your motor gear on there... but should not be that hard....
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That doesn't sound like a feasible solution.
My biggest question about your proposal is WHY in the world would he need so much torque to crank a spring so light? It makes no real practical sense. A high speed gear set can handle the torque requirements of a light spring just fine. Even System's SUPER high speed gear set can handle the torque requirements without breaking a sweat. Ultra torque up gears is a waste of time, money, effort, and lost ROF.
My next question is how putting such a high rpm and high torque motor in to the gearbox will "help" with the prevention of failed gears. I surmise his problem is due to a clashing of the gears and piston. How will MORE speed going in to the gears make it any better? It won't.
As already mentioned, my feeling on the issue is that the piston is not returning to battery fast enough before the sector gear comes spinning around. Putting in a heavier spring is the easiest way to make this set up work, but bear in mind that being in Japan, he is restricted to 0.98J as the output of his gun.
Making the gears spin faster won't help the issue and will only crash them in to the piston at a faster rate.
I would highly recommend the short stroke piston/gear route.