Originally Posted by outtafocus
It has been far to quiet in here the past few days.
Whats new?? someone has to be trying something out.
Ok, here's what I've been working on. For what it's worth........
I'm using a stick pack 4200 Lipo battery. The wires come out of the middle of the end of the pack like a NiMH stick pack. Because of this, I have to put the pack in the car so that the wires come out at the back of the car and exit up between the motor and the lay shaft. This requires me to move the pack as far forward in the car as possible. I tried to use the metal bottom plate but found the plastic one works better for this. I machined the front of it just a little so the pack could be moved forward a few mm and then stuck the pack to the battery tray with Parma double sided servo tape. Now, the battery fits in easily and there is about 1-2mm space between the top of the pack and the bottom of the top plate.
So, this isn't a big deal in itself but there are some real advantages to this that have nothing to do with the type of battery I'm using. First is that the plastic bottom plate allows the chassis to flex more than the metal one. I don't want to buy the Exoteck top plate because it won't help me with my battery. All it will do for me is take some of the stiffness out of the chassis. The plastic bottom plate does the same thing. Also, by sticking the battery to the tray with servo tape, it does not contact the top plate. This also helps with chassis flex. Now the chassis is free to move as it was designed to do. Next is by using the plastic battery tray, you get the ability to add weight to the bottom of the car on centerline. Those lead stick on weights fit perfectly between the ribs in the tray. Just stick them to the bottom of the battery. Now you can add weight as needed towards the front or rear of the car and it's as low as you can get.
I know the metal batter tray is cool, but in my opinion, this setup's advantages outweigh that.