what to buy for an upgrade??

pauly1986

alrite lads.
im hopin to upgrade d-boys cqb m4 i recently had it open n seen a big dirty hole drilled in the cylinder i wont say where i bought it from :mad:
but im looking to change the cylinder and maybe a new spring and possibly a few other bits but im not sure want make and sizes to buy or what is needed,the lst time it was choro its was only 245fhps id like it as close as possible to the 1joule and better rate of fire and ideas at all will be every helpfull.or any recommendation of what i should do for an overall better gun
i already have a tightbore barrel and new hopup rubber in it.

Evade

Get a ported cylinder, an M85 spring, clean the standard grease out of the gear box and replace it with white lithium grease.

Edit: If the teeth on the piston are worn replace that too.

Mr X15

Best way to increase r.o.f. is a new motor, G&P M120 high speed motor will give you a nice increase in fire rate and is cheap enough. You will probably need to re shim the gears so make sure you buy some new shims, get a good brand of spring for consistency maybe a m90, you should try and rewire the gun while your at it , use silicon wire 18awg, 16awg is a little tight i picked some up off ebay for about 4 quid for a meter of black and red, maybe change your connectors to deans as well. New wire and connectors should give you a slight increase in rate of fire.

mamoonkay

Maybe a new new motor.

pauly1986

great info lads,i was hopin of only a few small bits the gun is only a few mths old, and only have 100e to do some stuff.if i changed the cylinder n spring n add new grease would i see a diffidence in my fsp and rof?and would i need to change the cylinder head aswell or does the standard fit into any cylinder?

Evade

pauly1986 wrote: »

great info lads,i was hopin of only a few small bits the gun is only a few mths old, and only have 100e to do some stuff.if i changed the cylinder n spring n add new grease would i see a diffidence in my fsp and rof?and would i need to change the cylinder head aswell or does the standard fit into any cylinder?

The slightly less powerful spring and less thick grease will bring up the ROF even with the motor you have now. The heads are universal.

Mr X15

If you get a weaker spring you would increase the rof but decrease the fps but i doubt you'd notice since its at 240 anyway. If your buying new parts you will need them to be version II gearbox compatible as its an m4 and just stay away from bore up kits as they are useless at 1 joule. The best performance increase you will get for minimal money really is a motor the G&P M120 should cost about €25 well worth it have one myself great motor.

$kilkenny

last hing to worry about is the ROF if your on a budget.
ROF means very little really. all you need is 1 bb.

now new cylinder and a spring, best get a retailer to do the work.
I have a G&P m120 motor, there great.. a little to fast but it came stock with the gun, you'll also need to invest in some sort of high speed set up for your gearbox eg high speed gears as the m120 pushes the GB rediculusly fast.. you will spend more money fixng it then

tokyo marui guns shoot 280 fps.. yet they will out range most guns shooting 310 fps.

dont get as close as you can to 328, 300-310 fps is plenty

Mr X15

$kilkenny wrote: »

ROF means very little really. all you need is 1 bb.
I have a G&P m120 motor, there great.. a little to fast but it came stock with the gun, you'll also need to invest in some sort of high speed set up for your gearbox eg high speed gears as the m120 pushes the GB rediculusly fast.. you will spend more money fixng it then

eh high speed gears will further increase rof no need for them with that motor standard gears will work fine unless you are going after a very high rof

Evade

The new spring will be weaker than the one that's already in it. As he wrote in the OP the cylinder is drilled meaning the spring that's in the AEG would most likely be around 360 fps with an un-drilled cylinder. The 240 fps at the minute is most likely due to some over zealous drilling and maybe a barrel that's a bit dirty.

$kilkenny

if your not going to get fast gears you might aswell get a hi torque motor.
fast trigger responce and you should clock up approx 18-20 bps which is not scary fast but its still nice

Evade

One thing I forgot to mention, if you've got plastic bushings you should replace them with metal ones.

MonkeyGuy

Motor and 9.6 battery, as well as fixing that nasty cylinder.

Quote of the day, "...big dirty hole..."

pauly1986

haha "big dirty hole" has me in bits laughin when i read it back by the sound of it defo a new cylinder and a spring/grease is top of my list i already hv a 9.6 battery so hopefully with them bits il see an improvement.was goin to try and do it myself it wil be my first time but sure what harm wil it do to get know the insides of my gun.if anyone has any tips or something i should look out for when doin the upgrade plz shear ur wisdom

$kilkenny

use a screwdriver when taking the tension off the spring and putting it back in, just stick it up into the spring guide before you remove the top on the gearbox and the anti reversal latch
you will know it when you cant get it back in!
enjoy!

MonkeyGuy

First time I took a gearbox apart my spring guide hit the wall across the room, leaving a nice greasy stain. Anti reversal latches, Holy Mother of ... They're a pain, but you'll get it eventually!

$kilkenny

same thing happened to me! nearly broke a glass cabinet..... had to drop it into a shop to get it put back together.
oh and mind the shims on the gear shafts.... little fekcers of things to loose

pauly1986

ha i think i mite just leave it in sumwhere i dont wanna mess it up its my baby!!looks like il have to sell sumthing to pay for larbour arhhhhhh

$kilkenny

you might pay for it but atleast its done right

biz96

something about your "dirty hole drilled in the cylinder"
http://www.airsoftforum.com/board/lofiversion/index.php/t167256.html
and
http://www.arniesairsoft.co.uk/?filnavn=/articles/21c/cylinderandbarrels.htm

cylinder without holes is designet for barrel above 450 mm length

DeBurca

pauly1986 wrote: »

alrite lads.
im hopin to upgrade d-boys cqb m4 i recently had it open n seen a big dirty hole drilled in the cylinder i wont say where i bought it from :mad:
but im looking to change the cylinder and maybe a new spring and possibly a few other bits but im not sure want make and sizes to buy or what is needed,the lst time it was choro its was only 245fhps id like it as close as possible to the 1joule and better rate of fire and ideas at all will be every helpfull.or any recommendation of what i should do for an overall better gun
i already have a tightbore barrel and new hopup rubber in it.

What you need right now is a new cylinder and a M90 spring (cost €30ish) to get you shooting approx 300-310fps
The current spring is probably something around 1.2-1.3J and hence the reason for drilling the cylinder to reduce the output of the AEG to below 1Joule
With a M90 spring fitted you will see a rate of fire increase due to the fact that the motor will have an easier job to do compressing the M90 spring as opposed to the current stronger spring

It is a very good idea when you are inside the gearbox changing the spring and cylinder to shim the gears and if your gearbox has nylon bushings to replace them with metal ones
A properly shimmed gearbox will also see a ROF increase due to the reduced friction between the moving parts

As I said all you need right now is a spring and cylinder the rest like high speed motors, metal bushings, high speed gear set etc are nice to have but as I said are not needed at this time
Fit the parts required to get it shooting properly first and then decide if you want to further increase its ROF if so then fit a G&P M120 motor
I think it is best to do these things in stages so that you can see just what each part does to the overall performance of your AEG

Puding

if you downgrade correctly with a new spring and replace the cylinder you will hev a marked increase in rof

If your doing the work yourself i would advice downgrading the aeg correctly first and see what result you get, after that at least you will know what the fps is and rof, i normally do not advice changing to much all at the same time as this can cause problems when it comes to trouble shooting if you have a problem

Just a Plinker

pauly1986 wrote: »

alrite lads.
im hopin to upgrade d-boys cqb m4 i recently had it open n seen a big dirty hole drilled in the cylinder i wont say where i bought it from :mad:
but im looking to change the cylinder and maybe a new spring and possibly a few other bits but im not sure want make and sizes to buy or what is needed,the lst time it was choro its was only 245fhps id like it as close as possible to the 1joule and better rate of fire and ideas at all will be every helpfull.or any recommendation of what i should do for an overall better gun
i already have a tightbore barrel and new hopup rubber in it.

Talk to the guys at seairsoft.net I have used them for abot 18 months now, even just to get advice they are great, Won't push you into buying stuff either,And they know what they are talking about which is good

Just a Plinker

pauly1986 wrote: »

haha "big dirty hole" has me in bits laughin when i read it back by the sound of it defo a new cylinder and a spring/grease is top of my list i already hv a 9.6 battery so hopefully with them bits il see an improvement.was goin to try and do it myself it wil be my first time but sure what harm wil it do to get know the insides of my gun.if anyone has any tips or something i should look out for when doin the upgrade plz shear ur wisdom

sorry meant to add this ,check this site out www.mechbox.com And look at the shims it the gearbox when you take it apart , check the upper part of the gearbox when u remove it for them, Shimming is a bitch lol, Also a large magnet keeps you anti-reversal latch in place:cool: