High ROF & High FPS setup.
 

Hi,
I recently decided to upgrade my Tokyo-Marui SR-16 and I have come here to get your opinions as to whether or not it will hold up ok. Here is the list of parts I plan to install:

-9mm Anaconda gearbox or 7mm Systema shell w/ kanzen cermaic bearings
-Magnum motor w/ guarder reinforced pinion gear
-Prometheus torque-up gear set
-Guarder steel ball bearing spring guide
-PDI 190% spring
-Supercore piston with 2 teeth shaved and short-stroked
-systema duracon bearing piston head
-Prometheus teflon cylinder
-guarder cylinder head
-guarder air nozzle
-Prometheus anti-reversal latch
-16 gauge oxygen free low resistnace copper wiring
-Dual MOSFET w/ an active braking switch

HOPUP
-Systema metal hop up chamber
-Firefly hard bucking
-Big out H-nub
-Laylax Strike chamber
-6.05 PDI tightbore

I'll be using a 11.1v li-poly. Will this setup hold up alright? Feel free to change or say anything you want on that list.

Thanks
ROF_Madman

Looks like you're going for works, so maybe toss one of these cherries on top?

http://www.airsoftcanada.com/showthread.php?t=57005

looks like ill that to my list, haha. Thanks. Also do you think my setup will last alright. I have experience with high FPS/DMR setups and high ROF setups but not high FPS and ROF setups. also which gearbox would you go after of the ones I listed?

I don't have any practical experience with high ROF and high FPS setups, so maybe someone here who does can help you with that.

As per Manok787's experience, the systema gearbox is a bit brittle. He already cracked I think 3 of them. I think he's using a guarder reinforced gearbox right now(better pm him to be sure). He's setup is pretty close close to yours except for the spring. We just recently added a sorbo so hopefully that prevents future gearbox breakage.

With that combination... Nothing except the Gearbox i have got now... PGC 8mm Pro-win, CNC Machined out of that 7 series Aircraft grade Aluminium... Any other gearbox with that setup has a very very high chance of breaking. The reason is they are cast metal and can break more easily on higher FPS ROF setups. Sounds like your trying the impossible lol... Its usually High RoF OR High FPS.... Both is going to be a hell of a battle and $$ on your hands thats for sure hehe..

PGC - nothing but for the fact its unlikly to break. I htink its good for 900+ fps i heard somewhere or 150bb's per seccond thats assuming you could feed it that fast. Don't quote me on that but i'm sure thats teh rough kind of specs it can handle.

I'd recommend u switch over to a prowin gearbox for high FPS and high ROF
I'd also recommend u get Helical gears instead of standard flat gears, since a standard ratio helicals will produce a much higher ROF and be able to pull back a much stiffer spring, they just take a little longer to shim

Also with a magnum motor, I think u should just keep it the way it is, since I found the guarder ones to be weaker, If u really need to upgrade the pinion gear I recommend u get the upgraded one by systema for Magnum and Turbo motors.

Lastly, I highly recommend the Sorbo dampener, I've build a rifle for a customer with 410fps and 28-30 BB/Sec on a stock TM gearbox and it doesnt even look like it has any sign that its gonna break soon.

will a pro-win 8mm shell be able to fit in my TM sr-16 without any mods? Also I havent found any CNC'd gearboxes anywhere for sale. They only had a certain number of them up for sale and they got sold a long time ago.

Humm... It's definatly not a drop in gearbox.... Need to remove alot of internal shell and such usually. If you definatly do not want to mod your gun reciever dont get the Pro-win although for your setup it would be the best option.

when you say i have to remove a lot of internal shell does that mean you just dremmel some of the plastic body off?

Jesus Christ of Latter Day Saints!?! LOL, brutal!!! I'd be worried bout any type or bearing bushing with such a high spring, what I know is bearing bushings are meant for use with high speed set ups, yes, but at under 330fps velocities. Also, PDI springs are so varied in past years they can't be trusted anymore. Different lengths and wire thicknesses. Examples with 150% springs, I had one that shot 350fps in my MP5, was 6 3/8" long. Have also had ones that had thicker wire and up to 7" long, that were a bitch to install and also put out upwards of 450fps. Imagine those non-existant tolerances with a 190% spring, you might end up with a lemon (75% chance) that'll shoot over 500fps.

BTW, the 16 gauge "low resistance" wiring doesn't do shit, just make sure you install Deans Ultra plugs to replace all the connectors and that'll give you a lot lower of a reistance drop than the wiring will. Stuff found in TM mechboxes is #18AWG teflon insulated wire, similar but not quite the same as mil-spec aviation grade wire. The difference between #18AWG and #16AWG is roughly 1ohm............... per 1000ft. What the #16AWG stuff you are looking to use will give you, is increased current handling ability, which you'd want in such an insane idea like the one you have. ;)

Good luck with it all!

It depends on your plastic body, but thats what it means more or less, I usually see them in metal bodies rather then plastic.

BTW I had on my list a PDI 190% which is about 440fps after the short stroking of the piston. If I were talking about an M190 you would be spot on. I have a PDI 260% in my M16 and its at 496fps.

We HAVE to see this beast when it's done; just not on any fields! Best of luck with your set up though.

Sorry had to edit mine, but read it again now. Can't trust PDI springs at all, not even for bolt action rifles.

They are generally put in to metal bodies because of the amount of dremeling needed i think a plastic body may be too thin after the work.

Here is the work i did on mine.. It's a few pictures showing the metal i ground out and removed areas. The gun i used as a shell had a split hopup design hence the extra internal metal plate i had to fully remove out.

http://www.3dvirtualtours.co.uk/file1.jpg

http://www.3dvirtualtours.co.uk/file2.jpg

http://www.3dvirtualtours.co.uk/file3.jpg

http://www.3dvirtualtours.co.uk/file4.jpg

http://www.3dvirtualtours.co.uk/file5.jpg

is it possible to replace a version 3 gearbox with a prowin cnc gearbox, for something like an m60 or an ak74? or will you have to butcher the body past recognition?

No, there are only V2 Prowins currently I believe.

You most definitely need one of these: (and no, it's not photoshopped)

http://www.siegetek.com/images/produ...ar%20-%201.jpg

WTF? That should technically double the rof of a gun, but wouldn't it also cause double-shots in semi-auto also?

MadMax was talking about the "double" sector gear a while ago.

With half the number of teeth to pull the piston back...I suppose that you're limited to the volume of air that you can push down the barrel? Wouldn't be limited to rifles with short inner barrels?

How strong of a spring do you run to ensure that the piston is forward before the other "half" of the gear starts to engage?

What's your setup?

Indeed, this would need a stiffer spring to get a desired FPS. Which will cause the motor to turn harder and slower.

Very interesting, anybody has this on their guns yet?