I’m needing information on the trailer boogies that where used on the later flak 88’s. The wheels on these boogies have been switched to just 2 wheels per boogie. Did they modify the axles? Are the fenders the same width as when using the double wheels? Last question where did they store the removable out rigger arms?

Are you referring to an 8.8cm Flak 41?

Can you link to an image somewhere?
The Flak 18 had duals rear and singles front
Flak 36, 37 and 41 had duals on all axles.

I presume that there could be singles on
one or both axles in an emergency (roll with singles
or stand still due to missing tyres/wheels)

/ Robin

First look at what the German called these special trailers, they were the "Sonder Anhänger" Sd.Ah. They have numbers. Your referring to the ones carrying the 88mm guns. These are Sd.Ah. 201 - 202 - 203
By clicking the links, you'll find more on this excellent site. Or use the right description and ask Google.
http://www.kfzderwehrmacht.de/Homepage_english/Trailers/Special_trailers/Sd__Ah__201/sd__ah__201.html
http://www.kfzderwehrmacht.de/Homepage_english/Trailers/Special_trailers/Sd__Ah__202/sd__ah__202.html
http://www.kfzderwehrmacht.de/Homepage_english/Trailers/Special_trailers/Sd__Ah__203/sd__ah__203.html

[quote]I’m needing information on the trailer boogies that where used on the later flak 88’s. The wheels on these boogies have been switched to just 2 wheels per boogie. Did they modify the axles? Are the fenders the same width as when using the double wheels? Last question where did they store the removable out rigger arms?

Hi. also gave you a more detailed answer on ML. I thinks it is a mixed trailer affair. It's all about the fenders that don't match.
Very interesting photo.