What type alum. angle does Van's use?

[alpinelakespilot2000]

I need to redo my rudder stops (like everyone else it seems) because they are too short as drawn on the plans. Does anyone know if all the AA6 aluminum angle that Van's includes in the kit is 6061 or if some of it is the stronger 2024 stuff? I'm placing an order from Spruce and they carry both. Thanks.

[mburch]

Originally Posted by alpinelakespilot2000

Does anyone know if all the AA6 aluminum angle that Van's includes in the kit is 6061 or if some of it is the stronger 2024 stuff?

Check the info that comes with the preview plans, dude! AA6 = 6061-T6 angle, AA3 = 2024-T3 angle.

mcb

[alpinelakespilot2000]

Thanks Matt. Didn't remember seeing that in the preview plans.

[LettersFromFlyoverCountry]

For a part like this, and yeah, I'm redoing mine too, is there any reason not to use the angle at the aviation department at Home Depot? It's just a stop.

[Kyle Boatright]

For a part like the rudder stop, there probably isn't any reason not to use HD angle. The way the stop works, the lack of a radius on the inside corner of the angle probably doesn't matter.

If the part in question was a structural member, the radiused angle like Van's provdes is the only solution.

[Captain Avgas]

Originally Posted by alpinelakespilot2000

I need to redo my rudder stops (like everyone else it seems) because they are too short as drawn on the plans. Does anyone know if all the AA6 aluminum angle that Van's includes in the kit is 6061 or if some of it is the stronger 2024 stuff? I'm placing an order from Spruce and they carry both. Thanks.

Aluminium grades on Vans aircraft are as follows:

1. All skins are 2024-T3

2. All angles and other structural sections formed by folding are 2024-T3

3. Main wing spars are 2024-T4

4. All extruded bar and angle is 6061-T6

5. Large dia. rigid tube is 6061-T6

6. Small dia flex tube for brakes / fuel lines is 3003 (but 5052-0 is better).

7. All steel objects are fabricated from 4130 chrome/moly.

[chaskuss]

Originally Posted by Bob Collins

For a part like this, and yeah, I'm redoing mine too, is there any reason not to use the angle at the aviation department at Home Depot? It's just a stop.

Bob,
Most of the stuff I've seen at Home Depot, Lowes, etc. is architectual grade (no radius at the vertex) aluminum. Structural quality aluminum is extruded with a radius on the inside vertex. Architectual aluminum is not suitable for anything in an RV. Van is reknowned for pinching pennies. If he thought architectual aluminum was OK, he'd have saved the money and used it.
I would avoid it's use, for no other reason than it shows a lack of concern in workmanship. This could be an issue on two very important future days. #1 being the day your DAR inspects your project. #2 being the day a prospective buyer's mechanic inspects your RV.
Even though it's "just a stop", it is subject to bending loads. Architectual angle will fail prematurely.
It is easy to find structural 6061-T6 angle at most local metal supply shops.
Charlie Kuss
PS 6061-T6 can be welded, unlike 2024-T3 which should not be welded (it weakens 2024-T3)

[JonathanCook]

Hello,

I have not come to the rudder stops yet. How should the parts be different from the plans?

[Ironflight]

Originally Posted by JonathanCook

Hello,

I have not come to the rudder stops yet. How should the parts be different from the plans?

John - it is really hard to describe, and I think it is a little differnt for each plane (becasue the rudder geometry is slightly differnt each time, due to tolerance stackup), but for mine, the stops need to extend further aft than the plans.

Bottom line for me was - don't make these until you have the VS and rudder mounted, and can see exactly what you need to do. (Cause I have a set just like Van's drawings sitting in my junk parts box....)

Paul

[RV_7A]

My internal rudder stop is a cleaner option.



http://jeffsrv-7a.com/AEROGENIC/RUDD...RUDDERSTOP.htm

-Jeff