Hi. My names Dave and I have center mount skyhawk 66 and correct me if I'm wrong /80? on an older GT bike which I bought pre built. My mechanical skills I would say are in between novice to moderate so I thought getting a prebuild and slowly working my way in would be best. I'm very thankful for all who have contributed to this forum I have learned so much already and searches have brought me to relevant threads. I will do my best to be as concise in posting as you have been. My desired mods are a free wheel for the engine side and of course I'll need a pull start with that. Looking at the hd hub at blowbyumotorizedbicycles (would post link but don't recall if I can as noob) and pull start from livefastmotors. I also hope to design something that can be connected from the hub to the freewheel to pin the freewheel for compression starts for a cold and or troublesome engine start. Also read pull starts have reliability issues and would rather not drag around an extra one for emergencies. I will try to share as much of my experiences as I can but typing feels akin to having a tooth pulled to me so we'll see what I can muster. Hopefully I will be able to give something helpful to others. About it for now other than my clutch cable lasted about fifty miles before it broke at the handle and was replaced. The knew seems better quality and hopefully will last. My other experience was I slimed rear tire as it had a leak, rode it for 30 minutes or so, emptied air and refilled thinking more air would dry more slime and give better protection. Took it for another ride and in 5 minutes tube blew with such force popped the whole tire off the rim and that's how she sits right now. Debating whether to mess with it at this point or just wait till I'm ready to put free wheel on. Dieing to ride more though (I've probably got 150 miles in so far in about a month) Also am wondering if spokes are poking tube through rim as I read here someone else had that problem. Will check that shortly and report. If anyone has any good input on the mods I intend to do would appreciate hearing it and thanks again to all who contribute to and run this forum.