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My dad wants to put his new batteries in the GE garden tractor so to avoid having to remove them and reinstall them I was able to put them in the motorcycle for an hour or so today! took about 30 minutes to install them and less then 15 minutes to remove them, took it for a quick ride out behind the house in the bumpy over grown grass and realized that I was not going to be able to get much speed before the batteries were bouncing all over the place with a risk of shorting out, so I grabbed some duct tape to attach the GPS so I'd get a decent speed reading and took off down the road, there is a nice stretch of road in front of their house that is 3/4 of a mile long, straight and pretty flat with a slight down hill slope, maybe a few feet drop over half a mile, full throttle it reached 40mph! this is with a brand new set of 36v lead acid golf cart batteries, voltage dropped to around 32v to 33v and it was pulling around 160 to 180 amps leveling out to around 120amp as the speed topped out, turning around and heading very slightly up hill my speed dropped down to about 32mph altho I didn't have the throttle wide open all the time due to a few bumps in the road and it seemed to be pulling 180 to 200 amps a bit more steady with the voltage dropping down to 32v or so.
After I got back and started removing batteries I realized my tire pressure was a little low, the front brake also needs work so it doesn't drag (hit it a few times to get it to retract) and this was with 400 pounds of lead acid batteries at only 36v, so this is about the worst performance you could hope for! I'm thinking that the Lithium batteries shouldn't have much voltage sage either, so a 48v pack should't drop down to 44v or 42v under load, it should stay at 48v to 49v even under heavy load, so my 40mph top speed should go up to closer to 60 or 65mph with a 48v lithium battery pack, dropping the weight by 300 pounds and putting more air in the tires should help as well!
I was also informed that my neighbors boyfriend has a job as a TIG welder, mostly on stainless steal but that he might be able to weld aluminum as well, if that is the case I'm going to see if he can make my next battery box out of aluminum!
I've also been wearing in the motor for my Commuti-Car and am tempted to pull the motorcycle motor out and apart to see if there are any improvements that can be made with it.
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