So I received my XB-600 yesterday. It seems that Xtreme has listened to the feedback concerning the damaged shipments. The bike came double boxed and on a wooden skid. Nothing was severely broken. There were some washers, nuts, and screws at the bottom of the carton, but I was able to find a home for all but 1 nut (I hope it wasn't important). The front kickstand was broken, the metal sheered. From the looks of it, half broke in the factory (half was rusted) and the other half broke somewhere along the way (half was still silvery steel). I figure that Xtreme will honor its warranty and send me a new part to attach. Also, broken were the turn signal lights. The orange plastic cover keeps falling of off. Either its poorly designed or poorly manufactured. If its the later, I figure Xtreme can just send me replacement covers, if its the former then I guess crazy glue will solve it. Note to Xtreme, include a small bottle of crazy clue in the tool pouch for such reasons.
Now here's the only real problem I've come across... The top speed on the bike is 12.5mph or 20kph. I knew the acceleration was going to be poor, but its bearable. I also knew that this thing was going to be a slug, but there's a big difference b/w 12.5mph and 20mph. 12.5mph is slower than I bike (and judging from my ride this morning, slower than most other people bike). I recall reading on the forum that someone from Canada mentioned that their models of the XB-600 are capped (speed governor perhaps?) at 20kph (12.5mph for those of us south of the 49th parallel). I'm wondering if perhaps I got a Canadian model.
Here are some crude tests and data that lead me to believe that there is a speed governor present:
- 1 rider (220lbs=100kg) riding it after assembly with a battery voltage of 51V tops out at 12.5mph.
- putting the bike on its back stand and cranking the throttle up (letting the rear tire spin with no resistance) tops out at 12.5mph.
- putting 2 riders on (over 320lbs) results in the bike topping out at about 10-12mph still.
- charging the battery overnight (10-12 hours) and 1 rider at 220lbs results in a top speed of 12.5mph
My reasoning is that the problem was not an issue with the battery voltage (or else fully charging it would have fixed it). My other reasoning is that adding a substantial extra load (100+lbs) should have reduced the speed, but it resulted in only a negligible top speed decrease.
Any thoughts? I'm kind of hesitant to start hacking this thing up until the warranty has passed. Plus, the shunt mod is a good idea (and will more than likely occur in the future) but first I want to make sure that nothing else is afoul.