so if i understand this correctly, the rectangular tubing moves freely on the bolt. the bolt is tightened in place set at a desired position/angle when doing so. the piano wire works as a torsion bar from within the rectangular tubing.  next question, how did you assemble it - the wire through the bolt while in the rectangular tubing and then bending it over, or did you just drop it in while there was not pressure on the road wheel?  chris  In a message dated 4/2/2017 5:53:45 PM Eastern Standard Time, kunkmies...@gmail.com writes:
 Keep forgetting I have a pic to put up for this. This is quite simple, a bolt with a hole drilled in it and a pin made of piano wire. The pin extends down into the tube making up the swing arm, and rides on the lower surface, being pushed on when the wheel is pushed up. Two nuts hold the bolt to the hull, with the bolt head outside. A wrench in the outside nut and the bolt head allow the grip on the hull to be loosened, allowing the bolt to be rotated to adjust the pressure the spring pin is putting against the swing arm, changing the ground pressure and/or track tension. I really need to make a example piece, with the side of the tube cut away so the actual arrangement can be seen from the side. You do need a sturdy side wall to take the torsion on the bolt used. -- -- You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups "R/C Tank Combat" group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- -- You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups "R/C Tank Combat" group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.