Using the E-Bike kit to make pulling a trailer easy
I’ve had the E-bike kit for a couple weeks now and it’s certainly changed biking for me. One of the most exciting things I’ve been able to do is have it work together with our bike trailer. Here’s a quick video of it in action:
This post is intended for those wanting to convert a Super Turbo 800 Elite to lithium batteries, but can apply to many other applications (Scooters, go carts, rc cars).
Recognize the danger of lithium batteries. While it’s nice to have the extra current and higher capacity per pound offered by lithium batteries, it’s important to recognize that they are more temperamental than lead acid or nickle metal hydride batteries.
Select lithium batteries that are compatible with your application. You’ll want to make sure that you select lithium batteries that are practical and compatible. For compatibly you’ll probably just have to worry about voltage. In the case of the super turbo elite 800 we’ve got a 36 volt speed control so we’ll want to get pretty close to something with 36v nominal voltage and the same or less peak voltage as the lead acid batteries to be sure we don’t blow the speed control. I measure the lead acid batteries to peak out at 42v so in our case 10 lipo cells is perfect because they peak out at 42 volts and their nominal voltage is 37 volts.
I’ve also ran some LIFE4PO packs in my scooter for that I chose 12 cells for a nominal voltage of 39.6v. The benefit of LIFE4PO batteries is that they are safer, they don’t “vent with flame” as I heard someone put it. Basically less likely to burn down your house, which is a nice thing.
In terms of choosing practical batteries we wouldn’t want to have 5 2 cell packs, that would be a lot to charge pack by pack. I chose two 5 cell lipos that were really easy to hook up in series.
You’ll also want to make sure you have enough capacity for the application. In my case I needed just 8AH to get to work and back home (about 6 miles).
Prepare with a good lithium charger. You’ll need to have a charger that is meant to charge the lithium batteries you choose, whether they be lipo, lithium ion or life4po cells.
Match Connectors– This is the only modifying of the scooter you really have to do. You can modify the batteries connectors if that’s easier for you, they’ll just have to be the same
Monitor Voltage– You’ll want to be aware of your voltage, you may get a low voltage cutout device. Ideally you’ll keep well within the capacity of the battery. A safe rule is that you’ll use 1.5 AH per mile.
So as you can see the majority of the steps are just preparation, or choosing a batteries, charger & connectors.
The Razor ground force is a great alternative to powerwheels. Don’t get me wrong. Powerwheels are fun and there’s a lot of great powerwheels mods that you can do, but dollar for dollar a razor ground force go car is a lot more fun. Here’s some of the reasons why:
After having my lead acid batteries sit over the winter and a failed attempt to use NIMH batteries, I wised up and tried running my Super Turbo 800 Electric Scooter running on LIPO Batteries. 8 AH 30 C Zippy lipos. This setup is not recommended and I would guess is not endorsed by the manufacturer but seems to work really well.
The popular AR.Drone uses 4 brushless motors. The Drone motors are available from places like amazon for about the price you expect for a brushless motor and controller, if not cheaper at around $40. If you’ve been buying RC’s from walmart you may think that’s a lot of cash. If you’ve ever purchased a real rc car then you’ll know that $40 is a bargain (assuming the quality is decent). Read the rest of this entry »
Looking at the high expense for lithium batteries I decided to try out NIMH batteries in my Super Turbo 800. You can see the results in the video above. The cost for these NIMH packs was only $220. Read the rest of this entry »
On of the nice free features of the Super Turbo 800 for super scooters is the seat. It snugly fits into the hole at the rear of the scooter and if you’re not like me and can get it out without wrestling it with your whole body for 5 minutes then you can choose to bolt in the seat as well. Read the rest of this entry »
Your savings when choosing to use an electric scooter are rather substantial. Especially when you just take into account the cost of electricity vs the cost of fuel. However, it’s not a very fair argument to only take fuel into account. The cost of a battery is rather substantial. Even if you are talking about a small 36V scooter the cost of a cheap lead acid replacement battery is $130. If you’re wanting something to last you longer (both in lifetime and runtime) and actually be cheaper per cycle you’re looking at more of a $570 price tag. So when you think about the battery as well is a scooter still worth it? Let’s do the math. Read the rest of this entry »
Believe it or not electric ATV’s like the E-Force electric ATV have have been out in production for a few years now. They started emerging around 2008. The E-Force isn’t alone in the class of Electric ATV’s, but it has emerged as the only electric ATV to survive the gas powered competition as fuel prices returned to relatively normal levels. Now, as fuel prices begin to surge again, the E-Force may be the ATV that thrives.
The advantage of electric ATV’s such as the E-Force is that they have better low end torque – three times the amount of torque as their gas powered counterparts. The torque in RC cars results in the ability to do wheelies or standing backflips, but in the case of an ATV it allows you to easily plow heavy snow, climb steep grades and feel heavy acceleration from a standstill. Read the rest of this entry »
This year we’ll see the birth of the Fastest Brushless Car out of the box: the Traxxas XO-1 supercar. The powerhouse that will drive this RC car faster than another is a mamba monster on steroids and 6 lipo cells which come with the car. So all you’re needing is an iPod touch or iPhone to get your car going up over 100 MPH and the fastest brushless car on the market. Read the rest of this entry »