My great uncle flew around the world with Bob Reiss in N9675R, a converted A36 Bonanza with an Allison B17. In the 1994 trip they had an engineering firm plan out and engineer 100 gallon tip tanks (670lbs). After installation it was clear that even though in flight the bending moments margin would be adequate (although reduced), the taxiing was the largest issue with higher accelerations in the Z+ and Z- directions resulting in a limitations that only 55 gallons could be carried. So the stock bonanza can, if begrudgingly, carry 55 gallons on the tips. In his recollections of the time, he stated that it was common in the more remote areas to take off about 50% over MGW when fully loaded with fuel compared to a stock Bonanza. He would say that it flew, it just had to get going much faster to do it.
