Full tune kits.

-a|ex wrote:

cykotik1 wrote:Uhm......the LiPo battery isn't a necessity. At least not at the moment. So the entire budget can be dumped into the performance aspect. We have plenty of batteries. And for the moment I can put new connectors on my existing batteries.

you're not going to hit 25-30 rps easily without an 11.1v LiPo. you can run 2x 9.6v in parallel with a turbo motor to get close to it though. i made a 12v NiMH (attached in series) but didn't increase the rps much.

Link the 9.6s with a Y parallel or a series connector (19.2v)? It is a pain in the butt either way and you might as well just spend the money you would use for the other 9.6 for a lipo+charger.

-a|ex wrote:

#CW!!ZERO wrote:Well of course polycarb teeth arent going to last long in a highspeed setup, thats ,why reed said to use a quantum piston

going over budget... it'd be nice to have a quantum piston.
i prefer to go under budget with metal teeth rack and keep it around the lower end of 25-30 rps with a higher output LiPo. in practicality, the difference of 5 rps is negligible. he still has to purchase the requirements to run LiPo (that's 2x 11.1v + reed's fet + connectors + balance charger + flame retardant charging bag + voltage monitor/buzzer). that's almost half his budget. in terms of total cost, one has to make sacrifices. but, he can still run polycarb with a torque motor at 25 rps. Rhino sold me on one of those orange element pistons. i couldn't believe how great a polycarb half tooth element piston withstood an sp160 spring with very little wear (saturday's ACZ game). it's much cheaper than a quantum.

Well if you go highspeed your gonna always go overbudget, high speed breaks all the time, when our team went to GoldEagle we had tons of guns go down, 2 or 3 of Rhinos guns went down, one of mine did and then when we went to SS Trents went down, Jacks went down, mine went down. So stuff is gonna happen, thats what most people dont understand when doing highspeed, something will break eventually, so your always going to be buying stuff.

25 rps can be reliable. at least my tavor is able to handle it fine. 30+ rps will start pre-mature wear.

here's my poor man's lipo batteries:


2x 9.6v 1600mAH in parallel (mAH doubles and voltage remains the same) was pushing DSG setup with a lighter spring (stock jg m120 using spring guide spacer) at 35 rps @ ~300 fps. this was only for testing, 11.1v Lipo shot it up to 48 rps with an un-modded piston. work still in progress.


this one is in series. 8.4v + 3.6v = 12v (1600mAH doesn't change)
slight increase in fps, but not as good as the parallel 3200 mAH 9.6v

it took about 15 minutes to wire them up using my stash of NiMH batteries. no need to purchase new batteries for this configuration. i wasn't sure what the voltage limit is on reed's mosfet, so i kept it at 12v configuration (voltage is reading high because it was fully charged).

i got bored, i dont have a 25+rps set-up but it doesn't seem too hard to make. better wiring(10), mosfet(30), and any bearing springguide(7). then get Quality gears, motor(50), shim job(5), piston head(systema), and cylinder head(double o-ring). and here are the poor mans options.
Lipo set: http://cgi.ebay.com/Titan-B3-LiPo-3S-Battery-Balancer-Charger-11-1V-B6-IMAX-/280586955635?pt=Radio_Control_Parts_Accessories&hash=item4154492b73#ht_2327wt_1017 charger
http://cgi.ebay.com/25C-2000mAh-11-1v-Lipo-RC-11-1-3S-Battery-Trex-450-30C-/170567018341?pt=Radio_Control_Parts_Accessories&hash=item27b6962765#ht_2690wt_986 lipo
http://cgi.ebay.com/7-4V-11-1V-RC-Lipo-Battery-low-voltage-Alarm-Indicator-/170615522026?pt=Radio_Control_Parts_Accessories&hash=item27b97a42ea#ht_1970wt_986 lipo alarm
http://www.dealextreme.com/p/fireproof-lipo-lithium-polymer-battery-safety-guard-bag-small-size-51226 lipo bag
http://www.dealextreme.com/p/high-current-ultra-plugs-t-connector-10-10-pack-shrink-tubing-20-pack-set-10788 plugs
around 40$ for all you lipo accessories.
(i personally buy from hobbyking)

cheap pistons(stronger than you think)
http://www.ebairsoft.com/high-tech-nylon-full-steel-teeth-piston-p-3497.html metal teeth
http://www.ebairsoft.com/element-polycarbonate-full-teeth-piston%C3%82%C2%A0-p-1076.html half metal teeth
http://www.ebairsoft.com/nylon-light-weight-piston-p-1940.html 1 metal tooth
you should atleat buy one nylon piston, they are only 6 dollars and it is always good to have a backup. do mods,(AoE, swiss cheese, etc.)
i would also check out khmountain for alot of airseal parts.
if you buy all those pistons and lipo stuff it is only 70$ shipped plus torus which is 50+shipping.
http://www.wgcshop.com/wgc2008/main/product_detail1.php?search_From=searchItem&item=MDF-MB-02&search=searchItem&rs=torus&catid=&cat=
gb shell
even at this rate, it will be over 250 though. plus replacing stuff.

ownage1 wrote:i got bored, i dont have a 25+rps set-up but it doesn't seem too hard to make. better wiring(10), mosfet(30), and any bearing springguide(7). then get Quality gears, motor(50), shim job(5), piston head(systema), and cylinder head(double o-ring). and here are the poor mans options.

cheap pistons(stronger than you think)
http://www.ebairsoft.com/high-tech-nylon-full-steel-teeth-piston-p-3497.html metal teeth
http://www.ebairsoft.com/element-polycarbonate-full-teeth-piston%C3%82%C2%A0-p-1076.html half metal teeth
http://www.ebairsoft.com/nylon-light-weight-piston-p-1940.html 1 metal tooth
you should atleat buy one nylon piston, they are only 6 dollars and it is always good to have a backup. do mods,(AoE, swiss cheese, etc.)
i would also check out khmountain for alot of airseal parts.
if you buy all those pistons and lipo stuff it is only 70$ shipped plus torus which is 50+shipping.
http://www.wgcshop.com/wgc2008/main/product_detail1.php?search_From=searchItem&item=MDF-MB-02&search=searchItem&rs=torus&catid=&cat=
gb shell
even at this rate, it will be over 250 though. plus replacing stuff.

been there, done that...
those pistons you listed won't survive my torture test.
i have two of those xhigh-tech, one i tested till it broke, the other is working great on my tavor.
showed no sign of wear at 25rps, but i tuned it back down to 18-20 because i only use one hicap mag and a bottle of bbs.




this piston works great at 20-25rps but fails at 30-35rps.

here's a low budget piston that is polycarbon half teeth (recommended by Rhino) and holds up to 550 fps.
torque gears are necessary and from experience, standard gears will rip through those half teeth.


the KHM mosfet i rave about works great for NiMH, but sadly, i can't recommend it for high discharge LiPo's. Reed's is a much better alternative.
i have other low priced mosfets coming in the mail for stress testing.

i've also stress tested low budget torque gears to find their limits:
element genuine torque gears works fine up to m150 but can't handle sp160.


surprisingly, JG torque motors and stock gears are very reliable at 20-25rps. but i'm going to short stroke a pair up to 30-35rps and see how long that will last.

The hightech one in the link is a full metal rack that is much more reliable.

#CW!!ZERO wrote:The hightech one in the link is a full metal rack that is much more reliable.

here's one with a full rack that failed within 100 rounds on standard gears with m120 spring.
this was one of my earlier quest to find a true azimuth piston.


when i have free time, i'm gona take a hammer to it (on video).

Didyou do propper AOE becauseon your last piston picture I saw you only did one nylon ring instead on two. I guess we got lucky when we got all of our azimuths lol