Hi Folk's,
I was thinking (it can happen) about taking my 10kwh worth of Thundersky batts ($5k 32ea 100ah) out of the E-Cat www.evalbum.com/2749 , selling my E-Porsche www.evalbum.com/1273 ,$7k and putting the 200lb battery pack LiFePO4 3.3V x 32 = 106V (wire in series instead of buddy pairs) into a 1700 lb Karman Ghia (maybe Honda Del-Sol if same weight), finish weight 1900lb. I have an E-Tek RT 72V PM motor, curious how that would do in an EV, maybe to small. But that would be a peppy lightweight conversion. Not sure if the LiFePO4 batteries will go less than 80% dod and the max current 200A have to check with Thundersky (or Dave Kois from evcomponents where I bought but I think they fizzled.) I figure at 330whr per mile (measured on the AC side) on my 2800lb Porsche 914 should be 1900/2800 x 330 = 224 whr per mile in a lighter Ghia-etc. So at 80% dod 80ah x 3.3V x 32 = 8448 whr / 224 = 37 miles range, maybe that's wishful thinking on a 200lb lightweight pack, I dunno but looks g!
ood on paper
I finished putting in all the fusible links between the batteries, 4 sizes smaller (#12) than the main (#8) with hypalon fireproof insulation but normal copper wire inside (in E-Cat), 150A main breaker. I noticed that the wire lengths have to be "tuned" to the same length between the buddy pairs, the previous 60A buddy pair fuses were darkenned (probably getting ready to pop) on the shorter wires of non tuned buddy pairs. So this time I was careful to make the buddy pair wires the same length even if one terminal was closer to the next battery than the other. This current upgrade was for converting a Johnson 9.9hp 1gph sailmaster to electric with the Etek-RT motor but now I'm thinking of maybe going over to the "dark side" and just using it as gas since I'm hitting that little laws of physics thingy: hull speed mph = 1.5 x sqr-root of hull length (18') or 6.4mph so above 4hp it ramps up exponentially, need a 25hp to go twice as fast (my kid wants to go faster, kneeboard/s!
ki). Then I would free up the lithium stuff for a lightweight conversion, no more overweight lead sleds with 16-20 Trojans for me with poor braking/handling.
Have a renewable energy day,
mark
www.reevadiy.org community service RE & EV's
The 3 leg stool is solar,wind & EV's
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I was thinking (it can happen) about taking my 10kwh worth of Thundersky batts ($5k 32ea 100ah) out of the E-Cat www.evalbum.com/2749 , selling my E-Porsche www.evalbum.com/1273 ,$7k and putting the 200lb battery pack LiFePO4 3.3V x 32 = 106V (wire in series instead of buddy pairs) into a 1700 lb Karman Ghia (maybe Honda Del-Sol if same weight), finish weight 1900lb. I have an E-Tek RT 72V PM motor, curious how that would do in an EV, maybe to small. But that would be a peppy lightweight conversion. Not sure if the LiFePO4 batteries will go less than 80% dod and the max current 200A have to check with Thundersky (or Dave Kois from evcomponents where I bought but I think they fizzled.) I figure at 330whr per mile (measured on the AC side) on my 2800lb Porsche 914 should be 1900/2800 x 330 = 224 whr per mile in a lighter Ghia-etc. So at 80% dod 80ah x 3.3V x 32 = 8448 whr / 224 = 37 miles range, maybe that's wishful thinking on a 200lb lightweight pack, I dunno but looks g!
ood on paper
I finished putting in all the fusible links between the batteries, 4 sizes smaller (#12) than the main (#8) with hypalon fireproof insulation but normal copper wire inside (in E-Cat), 150A main breaker. I noticed that the wire lengths have to be "tuned" to the same length between the buddy pairs, the previous 60A buddy pair fuses were darkenned (probably getting ready to pop) on the shorter wires of non tuned buddy pairs. So this time I was careful to make the buddy pair wires the same length even if one terminal was closer to the next battery than the other. This current upgrade was for converting a Johnson 9.9hp 1gph sailmaster to electric with the Etek-RT motor but now I'm thinking of maybe going over to the "dark side" and just using it as gas since I'm hitting that little laws of physics thingy: hull speed mph = 1.5 x sqr-root of hull length (18') or 6.4mph so above 4hp it ramps up exponentially, need a 25hp to go twice as fast (my kid wants to go faster, kneeboard/s!
ki). Then I would free up the lithium stuff for a lightweight conversion, no more overweight lead sleds with 16-20 Trojans for me with poor braking/handling.
Have a renewable energy day,
mark
www.reevadiy.org community service RE & EV's
The 3 leg stool is solar,wind & EV's
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