swing arm bracing

[joncook06]

I've seen alot of extended swing arms with bracing but some without, is there a certain length that bracing is required. what about swing arm extensions, i want to add some this winter but don't want a weak link because of it.

[Busa08]

Some say if you go over 4" you should get it. talk to the pros like Trac Dynamics personally I think if you go over 6" you should get it.

[Commuta_Busa]

that's always been a tough one. Has any one measureed the actual deflection with/without bracing? What's optimal and what's not? Is the bracing to prevent twisting?

hillclimbers have amazingly long arms and I haven't personaly seen any break.

[joncook06]

k also are extensions only temporary, or could they be left on a while?

[thebbbusa]

Been running my extensions for 2 years now just fine.