PeteJC21 Posted August 23, 2010 Share Posted August 23, 2010 Hi, I have a BOYI BIM4 m4 aeg and it only fires at around 235 fps. I am looking for a cheap, quick way of upgrading it to get another 30,40,50 fps out of it. I plan on replacing it when I get my UKARA license, so dont want to spend too much. Up to £30 would be ideal. Here's a few details about the gun (it taks standard m16 mags, classic army etc.) http://www.laroysairsoft.com/BOYI_BIM4_Ser..._p/boyi3181.htm Any suggestions guys? Thanks Pete Link to comment Share on other sites More sharing options...
Supporters Rock-climby-Dave Posted August 23, 2010 Supporters Share Posted August 23, 2010 new hop up bucking would give better range and MAY increase you compression, but really you can't expect that gun to go much higher than it is already. Link to comment Share on other sites More sharing options...
Supporters Matt! Posted August 23, 2010 Supporters Share Posted August 23, 2010 tbh i wouldn't even open the gearbox! and as before you probably wont get much out of that. Link to comment Share on other sites More sharing options...
PeteJC21 Posted August 23, 2010 Author Share Posted August 23, 2010 What about a new battery? Say a 9.6v instead of the 8.4 it came with? Link to comment Share on other sites More sharing options...
Supporters Rock-climby-Dave Posted August 23, 2010 Supporters Share Posted August 23, 2010 battery does nothing to the FPS or accuracy, merely inreases Rate of fire. also, I wouldn't stick a 9.6 in that. Link to comment Share on other sites More sharing options...
Team Hatchet-Mags Posted August 23, 2010 Share Posted August 23, 2010 Hi,I have a BOYI BIM4 m4 aeg and it only fires at around 235 fps. I am looking for a cheap, quick way of upgrading it to get another 30,40,50 fps out of it. I plan on replacing it when I get my UKARA license, so dont want to spend too much. Up to £30 would be ideal. Here's a few details about the gun (it taks standard m16 mags, classic army etc.) http://www.laroysairsoft.com/BOYI_BIM4_Ser..._p/boyi3181.htm Any suggestions guys? Thanks Pete put a decent spring in there ? looking at around £20 Link to comment Share on other sites More sharing options...
JerseyRider Posted August 23, 2010 Share Posted August 23, 2010 It might not be able to take a stronger spring if its on the cheapside of life Improveing the air seals will give up a little boost you can do they be just doing what memcwho said Or a Tightbore barrel but TBH if you going to sell it when you get your licence i wouldnt bother upgradeing it at all.... Link to comment Share on other sites More sharing options...
PeteJC21 Posted August 23, 2010 Author Share Posted August 23, 2010 put a decent spring in there ? looking at around £20 Sounds a bit promising. Can you recommend anything? I wouldn't know where to start. A suitable spring and maybe a guide on how to do it? Link to comment Share on other sites More sharing options...
Team Hatchet-Mags Posted August 23, 2010 Share Posted August 23, 2010 Sounds a bit promising. Can you recommend anything? I wouldn't know where to start. A suitable spring and maybe a guide on how to do it? http://eliteessex.co.uk/section.php?xSec=55&xPage=1 these give you guides aswell and are very well priced hope this helps for a more indepth guide watch all of these Link to comment Share on other sites More sharing options...
Supporters Matt! Posted August 23, 2010 Supporters Share Posted August 23, 2010 a 9.6 in that plastic gearbox would just wreck the casing and gears imo. Link to comment Share on other sites More sharing options...
Team Hatchet-Mags Posted August 23, 2010 Share Posted August 23, 2010 a 9.6 in that plastic gearbox would just wreck the casing and gears imo. doubt it would fire more than 3 bbs on auto lol Link to comment Share on other sites More sharing options...
Supporters Rock-climby-Dave Posted August 23, 2010 Supporters Share Posted August 23, 2010 It DOES have a plastic gearbox. as such, a bigger spring or bigger battery WILL break it within 500-1000 rounds. Best bet is to go all out trying to get the air seals working properly. Teflon? tape is your best friend here. Can't really give any more info on it as I have never used it myself. have heard from reliable sources that it works wonders. Link to comment Share on other sites More sharing options...
Team Hatchet-Mags Posted August 23, 2010 Share Posted August 23, 2010 It DOES have a plastic gearbox.as such, a bigger spring or bigger battery WILL break it within 500-1000 rounds. Best bet is to go all out trying to get the air seals working properly. Teflon? tape is your best friend here. Can't really give any more info on it as I have never used it myself. have heard from reliable sources that it works wonders. he might have a really weak spring in it atm so just putting a average spring in may not break it and may increase FPS Link to comment Share on other sites More sharing options...
AF-UK Founding Member Deva Posted August 23, 2010 AF-UK Founding Member Share Posted August 23, 2010 I really wouldn't bother, £20 isn't going to be £20 if it then goes and does itself in.. Save the £20 for when you get UKARA. Link to comment Share on other sites More sharing options...
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