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Post by kiwiev on Feb 2, 2016 10:49:03 GMT
for the record Dyno was 153 Hp at the wheels and a massive 1440 ft/lb at the wheels at 48 rpm
Cheers Kiwi
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Post by kiwiev on Feb 2, 2016 10:59:07 GMT
Has anyone made a bigger wind screen out of poly carbonate to keep the bugs at bay?
Cheers Kiwi
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Post by kiwiev on Apr 4, 2016 4:55:51 GMT
So I'm still waiting for a VIN number to get registration the Roads and Maritime are going really slow A wee video of Sonic 7
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Post by drbrian on Dec 8, 2016 5:20:24 GMT
Great Torque on those electric motors make the thing a rocket! Great Job! Where do you live again my friend David on this forum is from New Zealand
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Post by Turbo on Oct 9, 2017 3:13:05 GMT
Hi
A quick question: which seats did you use? I assume they are ADR compliant. I have done som esearching for seats that will work in the Sonic and be ADR compliant but they seem to be too wide.
Thanks
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seb
Newbie
Posts: 1
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Post by seb on Oct 27, 2017 7:53:42 GMT
Hi Conrad.
I'm doing some research on various aspects of building an EV homebuilt race car specifically for hillclimbs and came across your work. Hopefully you don't mind answering a few questions. (Anyone else who has relevant experience and knowledge is also welcome to offer your wisdom!)
1. Firstly about batteries: My current concept involves building a car with a very small, easily swappable battery pack capable of giving a high output but only needing to have a range of 3km. The idea being keeping the weight as low as possible without having to consider range in any real sense. If this was your design brief for a battery pack, how would you personally go about it ie. what cells and arrangement? If this is an approach you ever considered, why did you decide against it?
Regarding your batteries, you quote: "batteries are Winston lipo 3.2 160 Ah battery weight about 5.5 Kg each I have 46 wired in series to give me around 152 volts. so this gives me a pack of 23.5 Kwh I can draw 1100 amps off these so in a perfect world 167kw of power."
2. The cells you're using appear to be rated at 3C discharge continuous (3x160A = 480A) and the stated maximum discharge rate is 1600A. You state that you can draw 1100A. How did you come to that figure (or is it a measured value?).
3. I have a fair amount of experience with LiPo and other batteries through many years of R/C models and some of the batteries I've used have discharge rates up to 90C continuous, which is massive compared to the 3C - 10C that I've seen looking at most of the cells available from EV parts suppliers. Is using "non EV" grade cells something you ever looked into, if so why did you choose the cells you did?
Thanks in advance for your help.
Seb.
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