27 replies to this topic

[Rx7]

http://airsoftglobal.com/product_info.php?products_id=4156

A gearbox that can take 9mm bearings, will the selector plate even fit?

[Kingcodez]

And I thought 8mm bearings were overkill...

[Glenn]

At some point, the gearbox isn't going to have enough material to support the bearings. I wonder what that point is.

[evilliboba]

Yah that is bearing on overkill! I made a joke.

[DarkLite]

I saw these in Mong Kok a month ago and thought it was stupid then.

Still haven't changed my mind.

[snorkelman]

at this rate if we hold out another year someone will be daft enough to bring one out with four wheel drive and traction control

[3vi1-D4n]

Funny that we measured the ROF on 6mm bearings vs bushings on a M120 spring 9.6v 3800mah setup on the same gears and shimmed correctly, and the bushings had a higher ROF.

Then the 2 bevel 6mm bearings disintegrated.

So yes...

People who buy > 6mm bushing/bearing mechs can't shim for *#$%*...

Edited by 3vi1-D4n, 24 June 2006 - 11:18 AM.

[Manxmadman]

Issue here though is if you need to replace the 9mm bearings, where are you going to get any spares from? Its hard enough finding 7mm ones, let alone 9mm. Don't really follow the 9mm or 6mm bearing idea myself, but it most work somehow.

[Kristoffer]

http://www.uncompany.com/pageproductdetails.asp?prodid=7644

Funny, I never thought I needed a ball-bearing-piston-support-shell.

Don't like the look of those open-sided 9mm bearings though. Seems like a big dirt-trap to me.

[Tom Andrews]

They don't expect you to fit the 6mm bearings inside the 9mm bearings do they? otherwise, why offer both sets? the 6mm would fall through the holes.

[Screwschom]

I really cannot wait for the 11MM bearing modle.

[YellaT]

Actually from 8mm and up there are loads better bearings AND bushings from other companies that fit the gears we have (3mm inner, 6/7/8/9mm outer). I would personally rather have these larger bearing holes for more reliable and higher quality bearings made by companies dedicated to making these types of things.

Edited by YellaT, 25 June 2006 - 12:49 AM.

[Sale]

I saw these in Mong Kok a month ago and thought it was stupid then.

Still haven't changed my mind.

My words exactly, even to the point of seeing them in Mong Kok. People didn't ask for a box with ball bearings for the piston. They wanted an affordable and easy to install V2 box that would actually last.

The funny thing is, we had this idea with another technician at the upgrade and repair section of the largest finnish airsoft shop about six years ago. The idea was ditched and we started thinking of ways to reinforce the front of the box without having to machine it from a solid piece (=expensive). You know who gave the idea of round "cylinder window" corners to CA a few years ago? I know I do.

Tom Andrews: The 9 mm bearings are for the gears, and the 6 mm bearings are for the piston.

-Sale

[DarkLite]

What's even worse - the metal used in the GB looks utterly turdworthy and it's very expensive for a GB shell.

[Sale]

I wouldn't judge the metal by the looks - unless you've seen a broken one and it was porous. Sometimes even the most homogenic looking metal is brittle.

[Mikkel]

You know who gave the idea of round "cylinder window" corners to CA a few years ago? I know I do.
-Sale

<{POST_SNAPBACK}>

That technique have been practised here in Denmark from before i started airsofting back in 2000.

[3vi1-D4n]

Funny thing is that technique will only work on relatively new mechboxes. Old TM mechs will break faster if you round the windows on them because the metal around the stress area is already fatigued.

And it all depends on spring tension. I have seen a systema mech break from an M160 with a leaky hop airseal. Most new TM v2, even with rounded corners will break after a period of time with upgrade springs at M120/170%.

Funny though some mechs never break, I have 4 stock mechboxes, which 2 have 170% and 2 on 150%, all have stock pistons and all 4 guns are 6-8 years old, and there is not a single crack in the mechs.

So far, the best and worse has got to be the G&P. One day it would be the easiest installation with the AEG working fine till a piston dies, next gun it would be a nightmare, taking 6 hrs to check over the shimming, nozzles, tapplet fit etc. G&P mechs are cheap enough to replace marui as replacement mechs and I haven't seen one break as yet (I did hear of one break though).

But again, the crunch is, if bushing is mounted and aligned, and gears are shimmed correctly, the metal bushings should not wear. Metal bushings should produce higher ROF than 6-7mm bearings and can take much higher power upgrades.

Edited by 3vi1-D4n, 25 June 2006 - 10:28 PM.

[revsd5]

My 7mm bearings produce a hell of alot more ROF then my normal metal bushings...

Im not following you...

[Lance Jackass]

I would join in the hilarities of the bearing debate - but i have no idea what you're talking about

Why is 9mm a scandal?

[DarkLite]

I would join in the hilarities of the bearing debate - but i have no idea what you're talking about

Why is 9mm a scandal?

<{POST_SNAPBACK}>

Cos 8mm is big enough. I've NEVER hear of 8mm bearings breaking - and 9mm is just excessive - especially since it looks like it could conflict with the selector switch.