I, for one, really dont like when a bike builder spends all their time hardtailing a bike and then leaves the ugliest rear motor mount swing arm bracket in place. My nephew decided when he built his frame that he wanted a clean, open area behind the motor and under the seat. We hashed out how this could be done without sacrificing the strength and integrity of the frame. We came up with the idea of tying together the lower frame rails and then fabricating a "T" post that goes up to the rear motor mount. We are hoping (and praying) that this set up will be strong enough (without the lower rails being tied together to the back bone) when the bike is on the road hitting bumps and crossing train tracks.