I'm getting a used BL-36 kit with 700c wheel tomorrow. I've got a 93 Steel KHS bike with Ultegra components and a Shogun 600 from the 80's with Tange #2 tubing, both weigh 24lbs total. Both with quick release.
Will pulling a 60lb dog in a 30lb trailer with the motor kit wear or stress anything out? Also, it will really help me out I'm pretty sure. I've got hills.... I figure I can pedal up hills and up to speed and use the motor for flat cruising to save energy. I tried pulling him with the 41lb full suspension mountain bike and even though it had a granny gear my average speed was 11mph over 4.5 miles, I can do 14.5mph over 7 miles on that bike with no dog.
I found a ladies Schwinn Varsity cheap I was thinking I could use for that but that would bring me up to 4 bikes total.