Version 2 gearboxes

Dro · September 25th, 2005, 03:23

Do you guys know if Version 2 gearboxes are durable? All I know is that its better than Version 1, and Version 3 is know for its durability. So, are they decently durable? BTW, I'm planning to get an MP5 SD5.

P.S. Yea I'm a noob, this is my first post and I just got into airsofting recently.

AndrewL · September 25th, 2005, 05:31

The stock gearboxes are durable, they work just fine. However if you are planning on adding a more powerful spring, than a reinforce gearbox and other reinforced internal parts would be recommanded.

SEALs · September 25th, 2005, 05:54

they aint quite reliable. Once you start upgrading you looking foward problems. I know its been over 5 years I have one.

bruce · September 25th, 2005, 06:17

They have been known to crack with upgraded springs and in cold temperatures. I've cracked 2 upgraded mechboxes with Systema M120 and M120S springs in them during the winter. Cracking the mechbox can lead to stripped gears and pistons also.

CDN_Stalker · September 25th, 2005, 10:20

The V2 mechbox in my MP5A5 was upgraded in December last year, with a "normal" PDI 150% spring (I say normal because there are a lot of bad PDI springs out there that put out up to 450fps at times) and I was shooting about 350fps where it should be. Only shooting I did was in the basement (winter, never shot outside) and noticed a crack inside the mag well on the bottom of the mechbox. I opened it up to find the top part had separated. So I put a Hurricane reinforced mechbox in and has been happy ever since.

So, as has been said in the posts above, they give out after a while with even a moderately upgraded spring.

Dro · September 25th, 2005, 11:43

Since I'm not planning to upgrade (due to the lack of knowledge with mechanics, and low funds), I guess I'll be fine then?

CDN_Stalker · September 25th, 2005, 12:31

For the most part. Consider an upgraded gun as speeding up the failure of a mechbox. Such as a mechbox will give after XXXXX amount of rounds, but an upgraded one will increase that failure faster. I assume mechboxes were designed to withstand X amount of impact on the front end, and I assume that a stock mechbox with a stock spring *should* last indefinitely. Increase the force of impact, you increase the age of the mechbox.

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September 25th, 2005, 03:23	#1
Dro Trader rating Join Date: Sep 2005 Location: Winnipeg, Manitoba	Version 2 gearboxes Do you guys know if Version 2 gearboxes are durable? All I know is that its better than Version 1, and Version 3 is know for its durability. So, are they decently durable? BTW, I'm planning to get an MP5 SD5. P.S. Yea I'm a noob, this is my first post and I just got into airsofting recently.

September 25th, 2005, 05:54	#3
SEALs Trader rating Join Date: Dec 2001 Location: Watchin' your 6.	they aint quite reliable. Once you start upgrading you looking foward problems. I know its been over 5 years I have one. __________________ If you're short of everything except enemies, you're in combat. D.O.W. SEALs Father of fear, reckless and widowmaker

September 25th, 2005, 06:17	#4
bruce Super Moderator Trader rating Join Date: Aug 2003 Location: Montreal	They have been known to crack with upgraded springs and in cold temperatures. I've cracked 2 upgraded mechboxes with Systema M120 and M120S springs in them during the winter. Cracking the mechbox can lead to stripped gears and pistons also. __________________ bruce: Team Bad Karma-(BK-05) : Special Battalion East-(SBE-01)

September 25th, 2005, 05:31	#2
AndrewL Trader rating Join Date: Dec 2003 Location: Calgary	The stock gearboxes are durable, they work just fine. However if you are planning on adding a more powerful spring, than a reinforce gearbox and other reinforced internal parts would be recommanded.

September 25th, 2005, 10:20	#5
CDN_Stalker Official ASC Bladesmith Trader rating Join Date: Jul 2003 Location: Ottawa, Ont.	The V2 mechbox in my MP5A5 was upgraded in December last year, with a "normal" PDI 150% spring (I say normal because there are a lot of bad PDI springs out there that put out up to 450fps at times) and I was shooting about 350fps where it should be. Only shooting I did was in the basement (winter, never shot outside) and noticed a crack inside the mag well on the bottom of the mechbox. I opened it up to find the top part had separated. So I put a Hurricane reinforced mechbox in and has been happy ever since. So, as has been said in the posts above, they give out after a while with even a moderately upgraded spring. __________________ STKR Knives http://www.facebook.com/#!/pages/STK...17036668380871

September 25th, 2005, 11:43	#6
Dro Trader rating Join Date: Sep 2005 Location: Winnipeg, Manitoba	Since I'm not planning to upgrade (due to the lack of knowledge with mechanics, and low funds), I guess I'll be fine then?

September 25th, 2005, 12:31	#7
CDN_Stalker Official ASC Bladesmith Trader rating Join Date: Jul 2003 Location: Ottawa, Ont.	For the most part. Consider an upgraded gun as speeding up the failure of a mechbox. Such as a mechbox will give after XXXXX amount of rounds, but an upgraded one will increase that failure faster. I assume mechboxes were designed to withstand X amount of impact on the front end, and I assume that a stock mechbox with a stock spring should last indefinitely. Increase the force of impact, you increase the age of the mechbox. __________________ STKR Knives http://www.facebook.com/#!/pages/STK...17036668380871

Version 2 gearboxes

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