Oxygen Bottle for ASW 20

Hello,

I want to install an oxygen bottle in my ASW20. I haven't found any documentation on what size bottle should be installed. I tried a search on this site and there are loads of posts regarding oxygen but I couldn't get them to open. Anyone know why? Anyone have any information on the size of oxygen bottle to use in an ASW 20?

Thanks,

Deming

Several years ago, a pilot who had relocated from Florida to Moriarty with an ASW-20C had me install an O2 system. By enlarging the fuselage bulkhead hole down by the pilot's right elbow, I was able to fit a Mountain High AL-682 cylinder. This is the largest capacity cylinder available for use in a -20. It is also the one I use in my Pegasus, which has a nearly identical cockpit. The diameter of the AL-682 (and the shorter AL-415) is 4.4 inches. It fits in the existing clamp, but the padding must be removed. If you do not have a clamp, one must be fabricated or possibly ordered from Schleicher.. Call or email me if you need more info. You have my number and email address.

On Thursday, February 14, 2019 at 5:27:47 PM UTC-5, Deming Gray wrote:
Hello,

I want to install an oxygen bottle in my ASW20. I haven't found any documentation on what size bottle should be installed. I tried a search on this site and there are loads of posts regarding oxygen but I couldn't get them to open. Anyone know why? Anyone have any information on the size of oxygen bottle to use in an ASW 20?

Thanks,

Deming

You need a steel (not aluminum) E size bottle. These may vary a little in OD and smaller is better (4.18" is the magic number iirc). The aluminum E size bottles are too big.

Something like this:
https://www.cramerdeckermedical.com/...product_id=430

best,
Evan Ludeman / T8