RE: GP Ultimate Bipe 40
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Mine weighs in at 5lb 11oz with both wheels on it. lol! I went with the os70II surpass because my saito 91 was already on another airplane. It balanced out perfectly horz. and vert. without adding any weight. A tip for balancing, do a search on vanessa c.g. machine on this site. It is by far the best way I have tried to balance an airplane. No more dings or dents.