Do you corner cut your gearbox?

Learned something i did not know while visiting a site the other day, its a technique used by rounding the corners of the mechbox shells inside corners ( see pic, hard to explain) Apparently it prolongs the gearbox life or something similar. Maybe someone could explain the logic behind this.

[13Fido13]

It would work the same as drilling a hole along a crack in a piece of Plexiglas. It prevents the cracks from forming/continuing due to the fact that a crack can only really form on a sharp corner.

The radius prevents this from occurring.

Helpful?

[xelamander]

same principle as to why airliners no longer have right-angled square windows. google comet jetliner crashes.

[m102404]

It's not uncommon...some mechboxes actually have it done at the factory.

Where two straight lines meet, forces are concentrated and if sufficient will overcome the strength of the material. Y modulous or something like that (it's been a long...long time since materials class).

By rounding out the corner, there's technically no straight line intersection...so stress forces are more distributed around the area. Still...if the material is shit, it's shit.

I forget the exact way to figure out what radius it should be...but as your pic shows...that's ok.

Tys

[CDN_Stalker]

Great idea, wonder why I never thought of it.

[ThunderCactus]

It works both ways, a 90 degree corner is your weakest choice, an inside radius is 2nd weakest, just spreads out the forces that would normally tear down the crack.
Making the corner a radius would be the strongest thing, but I'm pretty sure it would interfere without mounting the cylinder

[Ronan]

Originally Posted by CDN_Stalker

Great idea, wonder why I never thought of it.

You were too busy dodging bullets.
http://www.airsoftcanada.com/showthread.php?t=91779

Originally Posted by Armyissue

All the GDawg's were shooting at CDN_Stalker,
he dodged everyone of those shots!

The reason they round it is to spread the area where force is applied. Aka bigger area to diffuse the force. The angle is also important.

[CDN_Stalker]

Originally Posted by Ronan

You were too busy dodging bullets.
http://www.airsoftcanada.com/showthread.php?t=91779


The reason they round it is to spread the area where force is applied. Aka bigger area to diffuse the force. The angle is also important.

Sheesh!!!

And, rounding the corners wouldn't have any effect on the cylinder's seating.

[El Cactus Loco]

there was a merchant ship that split right in half and sunk during WW2 because stress concentrated in a 90 degree corner in a doorway and propagated through the entire ship. ever since all doorways/bulkheads on ships have large internal radius's! crazy shit!!!