SHS 13:1 gears

[Hendy]

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=191029876949&ssPageName=ADME:X:EAC:GB:3160

Is this a good price for them or they cheaper some where else?

 

[Ian_Gere]

When you consider the cost of shipping, that is about the best price you'll find.

Don't forget a sector chip, or your BB's wont feed at high ROF, and shims of course. And grease (CT-2 on fleabay).

 

[Hendy]

Yea I am not really sure what else I need to increase my ROF I looked up some guides and they said SHS gears were good.

 

[Ian_Gere]

I like them and they have a good rep. Compared to Systema and Prometheus, which are very expensive (although I got them as part of a pile of stuff i got cheap iirc), I'd choose SHS.

As a quick list of issues with increasing your rate of fire:

• The tappet plate can't move back and forth fast enough for the flow of BB's up from the magazine to keep up with the ROF, so you need a sector gear chip or clip, also called a tappet plate delayer, which keeps the tappet plate back for a few milliseconds each cycle, which gives the next BB time to pop up ready to be fired. Get the plastic one so that you can modify it more easily if needed (they can be a bit of a PITA).
• Very low ratio gears, such as 13:1, are more difficult for the motor to pull, thus there is more pressure between the teeth of the meshing gears which means that the slight differences from bang on perfect, the engineering tolerances, are magnified so the force between the gears also attempts to push them apart sideways. This is bad for the gear teeth, which will wear on one side and faster, and wastes energy in friction, which also makes more noise. So you need to shim the GB properly and use decent grease.
• Because 13:1 gears are so much harder for the motor to pull than stock gears (18-point-something:1), a stock motor may not perform that well with them. People usually go with an upgrade such as Lonex A2, ICS Turbo 3000, G&P M160, M170, M180 - but it depends what your stock motor is and bear in mind that cutting down on friction allows more of the motor's power output to go into pulling the spring, rather than generating heat and noise.
• Depending on what your stock set is, you may also want to cut down on friction by upgrading or replacing your bushings/bearings. It depends on your spring strength, but for UK full auto AEG's bearings are the way forward, so long as they're good ones (shit bearings are worse than shit bushings). Kanzen are the dogs' bollocks, SHS are good, and Lonex are probably good.
• I've probably forgotten something so maybe someone else can chime in
  

Oh aye, you don't have to go all the way to 13:1, SHS do very good 16:1 gears too and Super Shooter, which is the same company iirc, do 14:1 which are well regarded.