Ianhill wrote:A magnetic drill press is on my list of shed tools they are handy because they are mobile'ish and the most stubborn materials are normally magnetic, I'm undecided on what to build next i may just stick with the faggio scooter and drop a 2000w 48v in there and run it 20s 4.3kw on the trapiz controller, it would need a new dc-dc converter, connectors and wiring upgrade, 1 more 4s 16000mah lipo and 219 sprockets and treaded tyres, it would have 20s16ah multistar and 20s 10ah graphene then it would be a bad bitch if I solder the shunt up.
Upgrade until you reach whatever is the best a platform can be and then move to a new one. I stopped further development on my blue scooter for that reason. I was quite content with how it performed and how it rode. More would have been frivolous. If your scooter is all it can be in your heart and mind, then leave it be, but if you feel that you can do more and make it perform even better, then by all means you should.
I use this DC-DC converter at 82 volts in my blue scooter. It has worked very reliably. There are 3 components inside that limit what its maximum voltage can be. There's a filter capacitor, small switching power supply for the control chip and a schottky rectifier. They are all good for 120 volts max so anything under 100 volts is just fine.
http://www.ebay.com/itm/converter-adapt ... 211215a7f8
I have one of these, but it's not being used in anything yet. It's spec'd at 120 volts, butI have never taken it apart to look at the components inside to know for sure what it can handle. It's a good bit larger than the previous converter.
http://www.ebay.com/itm/electric-36v-48 ... 21126930d8
What's the maximum voltage your controller can handle? If you do solder over the current limiting shunt inside the controller, you risk burning out the mosfets. Most Chinese controllers have just enough mosfets in them for whatever they are rated for. Quite commonly they are cheap Chinese mosfets too, so consider replacing them with IRF4110 mosfets before you over amp it. That or run it more than its rated current and then have spare mosfets on hand for when they burn out. Be sure to reinforce all the power traces. I use 14 awg solid core wire for reinforcing power traces.
A magnetic drill press is useful for flat steel objects, but not for anything else. I would rather have a real drill press.
BTW...before you consider going with a larger BOMA, consider going this route instead. The Alien Power C80100 is rated for 6000 watts and physically 2/3 the size of the BOMA. I just got this motor today with halls already installed. It's a very stoutly built motor. Most outrunners are not intended to run from the shaft, but rather from the bell only. This is one of the few outrunners that have a 12mm shaft and will run equally well from the bell or shaft. Also, the C80100 can be purchased in a variety of Kv's which is not the case for the BOMA. I paid $180 for this motor. for how much more wattage it can handle compared to the BOMA for just a few dollars more is in my opinion worth it.