lazycyril Posted June 3, 2008 Share Posted June 3, 2008 Think there is enough space underneath and in front of the rear IRS to directly attach a Transwarp 11 ? Thinking http://www.evparts.com/prod-MT2144.htm Supposedly 135ft lb torque at 72 volts/453amp? I have yet to see info on how well it would preform without the gearing from a transmission. Still nice to see a working setup to see what is needed to get same or better then stock engine performance. Personally I would ditch the heavy generator setup and toss in another parallel battery bank in the previous gastank-sparetire box area. I have also been keeping an eye out for an old truck to do conversion on, as I have seen battery boxes built to fit hidden away under the bed. Quote Link to comment Share on other sites More sharing options...
Cal Poly Zmanaustin Posted June 4, 2008 Share Posted June 4, 2008 What an awesome project. Where was the "Flux Capacitor" again? Quote Link to comment Share on other sites More sharing options...
Wedge Posted June 7, 2008 Share Posted June 7, 2008 Just to tease you or give you idea this is a JGTC EV supra with 3 wheel motors with regen braking and for power it uses a capacitor ! i read somewhere its near 700 hp ! ill try to find the article enjoy the vid . Quote Link to comment Share on other sites More sharing options...
dskubitz Posted June 9, 2008 Share Posted June 9, 2008 Have you thought about putting two motors mounted in the rear of the car, each directly to the back wheels? I figure that it might put a lot of extra weight in the back of the car, but you would lose a lot of weight in drive train, which would allow for more battery carrying capacity in the front. Quote Link to comment Share on other sites More sharing options...
proxlamus© Posted June 9, 2008 Share Posted June 9, 2008 Looks like the TRD Supra Hybrid includes : 1. Three electric motors A four-wheel energy regeneration and drive system has been adopted which includes in-wheel motors in the front wheels in addition to one 150 kW rear-axle mounted electric motor. Thanks to this energy regeneration system with three motors/generators, the vehicle can more efficiently recover a greater amount of energy during rapid deceleration and braking from high speeds. Now thats cool! I want to see pics of that! Quote Link to comment Share on other sites More sharing options...
RaDeuX Posted June 11, 2008 Share Posted June 11, 2008 Wow. An electric motor swap is really attractive, given the prices of gasoline these days. But from what I've seen from this 240z project and the electric imp, it doesn't seem very practical. I would definitely do the swap if I knew how to do it, or if there's a bundle of parts and directions for a rookie like me to follow. Quote Link to comment Share on other sites More sharing options...
datman Posted June 11, 2008 Share Posted June 11, 2008 must have good batteries Quote Link to comment Share on other sites More sharing options...
jmead Posted June 15, 2008 Author Share Posted June 15, 2008 Wow. An electric motor swap is really attractive, given the prices of gasoline these days. But from what I've seen from this 240z project and the electric imp, it doesn't seem very practical. I would definitely do the swap if I knew how to do it, or if there's a bundle of parts and directions for a rookie like me to follow. I know the project as a whole may appear complex, but if your break it down into little pieces there isn't anything that can't be accomplished with basic tools and skills. The hardest part in my opinion is fabricating the motor to transmission mounting plate. This is commonly outsourced and there are companies that specialize in this. I looked into having this done but they did not have a pattern on file for the Z car transmission. If there were to be enough interest I would even be up for putting together a kit tailored specifically for Z cars. With the major hurdles taken care of a conversion is little more than an engine swap, it could even be a weekend project. Quote Link to comment Share on other sites More sharing options...
jmead Posted June 15, 2008 Author Share Posted June 15, 2008 Think there is enough space underneath and in front of the rear IRS to directly attach a Transwarp 11 ?Thinking http://www.evparts.com/prod-MT2144.htm Supposedly 135ft lb torque at 72 volts/453amp? I've looked into this. The transmission tunnel narrows down so much between the seats that its just not possible. You'd either have to live with a driveshaft or flip the differential around and have the motor behind the wheels. This would require a new differential mount to be fabricated but would be interesting. Quote Link to comment Share on other sites More sharing options...
Six_Shooter Posted June 15, 2008 Share Posted June 15, 2008 jmead; So what kind of pulling power would a single (any electric still in planning) have connected directly to a diff with 3.73 gears and 26" tall tires? Enough to pull a 3400 lbs vehicle towing a car trailer that weighs around another 3400 lbs, with all equipment? Or should I retain the tranny to have some lower gears for an easier take off from a standing start? Quote Link to comment Share on other sites More sharing options...
jmead Posted June 16, 2008 Author Share Posted June 16, 2008 jmead; So what kind of pulling power would a single (any electric still in planning) have connected directly to a diff with 3.73 gears and 26" tall tires? Enough to pull a 3400 lbs vehicle towing a car trailer that weighs around another 3400 lbs, with all equipment? Or should I retain the tranny to have some lower gears for an easier take off from a standing start? Based on the 135ft-lbs of a transwarp 11, a 3.73 rear end would give you 504 ft-lbs to the wheels at 450 amps. The same vehicle with a transmission in first gear (assuming ~4:1 in first) would be over 2000 ft-lbs to the wheels. It'd be just like starting in forth, which I haven't tried, but I have accelerated from a stop in third and I certainly wouldn't want to do it pulling 3400 lbs behind me. Quote Link to comment Share on other sites More sharing options...
RaDeuX Posted June 16, 2008 Share Posted June 16, 2008 If there were to be enough interest I would even be up for putting together a kit tailored specifically for Z cars. With the major hurdles taken care of a conversion is little more than an engine swap, it could even be a weekend project. Ah, well that sounds pretty encouraging to say the least. How much did everything cost you in total? I'm thinking 5-7k? Quote Link to comment Share on other sites More sharing options...
Z-Dreamer Posted June 17, 2008 Share Posted June 17, 2008 Battery weight, capacity & recharge time has always been the problem when it comes to EV's. But there are some new technologies around the corner, like Nickel/Zinc batteries that actually last. NiZn batteries can deliver 30% more power and increased energy density, as well as reduced size, weight and cost. Here are two companies and their claims. http://www.greencarcongress.com/2008/05/powergenix-intr.html http://www.xellerion.com/ But the one that has a lot of people wondering is a company called EEStor. They claim to have developed a ultracapacitor using ceramics. http://peswiki.com/index.php/Directory:EEStore Quote Link to comment Share on other sites More sharing options...
Wedge Posted June 17, 2008 Share Posted June 17, 2008 Those motors sounds like the best bang for the buck ! 1500 km range is ALOT ! http://www.pmlflightlink.com/motors/hipa_drive.html It seems to be the same principle as the JGTC supra wheel motors with batteries and capacitors to store regenbraking to charge batteries . Quote Link to comment Share on other sites More sharing options...
RaDeuX Posted June 17, 2008 Share Posted June 17, 2008 Those motors sounds like the best bang for the buck ! 1500 km range is ALOT ! http://www.pmlflightlink.com/motors/hipa_drive.html It seems to be the same principle as the JGTC supra wheel motors with batteries and capacitors to store regenbraking to charge batteries . Hmm. I never even heard of a flat motor before. I wonder if it's possible to put two of the same motors in an AWD or something. Quote Link to comment Share on other sites More sharing options...
Z-Dreamer Posted June 18, 2008 Share Posted June 18, 2008 Those motors sounds like the best bang for the buck ! 1500 km range is ALOT ! http://www.pmlflightlink.com/motors/hipa_drive.html It seems to be the same principle as the JGTC supra wheel motors with batteries and capacitors to store regenbraking to charge batteries . Wow, that is awesome! Mark Quote Link to comment Share on other sites More sharing options...
dskubitz Posted June 19, 2008 Share Posted June 19, 2008 Those motors sounds like the best bang for the buck ! 1500 km range is ALOT ! http://www.pmlflightlink.com/motors/hipa_drive.html It seems to be the same principle as the JGTC supra wheel motors with batteries and capacitors to store regenbraking to charge batteries . How much? can we get these here? This would be awsome with at least two of these on the rear wheels. 550 lbs torque each, and long range. I want one. Quote Link to comment Share on other sites More sharing options...
jmead Posted June 19, 2008 Author Share Posted June 19, 2008 Those motors sounds like the best bang for the buck ! 1500 km range is ALOT ! http://www.pmlflightlink.com/motors/hipa_drive.html It seems to be the same principle as the JGTC supra wheel motors with batteries and capacitors to store regenbraking to charge batteries . I wouldn't hold your breath for a commercially available wheel motor any time soon. They have existed for decades, the problem unsprung weight and durability. The entirety of the assembly is subjected to the extreme vibration of a suspended wheel, as wheel as the shock associated with wheel hop, launch, etc. A normal motor as least has a mechanical gear reduction and several joints to dampen the extreme instantaneous forces encountered in an automotive application. Also, I don't believe 1500km for a second. 250wh/mi is a typical figure for a car with a standard series wound motor. These are typically ~85% efficient. Even with a wheel motor that is 95% efficient you're only talking a 10% improvement. That means 1500km (~900 miles) would take 202,000wh of battery capacity. At a current price of $1/wh thats a very expensive battery pack, not to mention a weight of something like 4,000lbs even with the highest tech lithium cells available. Quote Link to comment Share on other sites More sharing options...
jmead Posted June 19, 2008 Author Share Posted June 19, 2008 Battery weight, capacity & recharge time has always been the problem when it comes to EV's. But there are some new technologies around the corner, like Nickel/Zinc batteries that actually last. NiZn batteries can deliver 30% more power and increased energy density, as well as reduced size, weight and cost. Here are two companies and their claims. http://www.greencarcongress.com/2008/05/powergenix-intr.html http://www.xellerion.com/ But the one that has a lot of people wondering is a company called EEStor. They claim to have developed a ultracapacitor using ceramics. http://peswiki.com/index.php/Directory:EEStore I am eager to see some NiZn cells actually become available for testing. The technical specs are impressive, especially the peak output per pound figures. It seems like the future of battery technology is very bright. Hopefully the marketplace becomes very competitive (as I'm sure it will) and we see price wars bring the cost down. Electric vehicles are right on the edge of being a cost per mile winner with high gas prices, but if capacity increases as price drops it won't even be a fair fight at that point. Quote Link to comment Share on other sites More sharing options...
jmead Posted June 20, 2008 Author Share Posted June 20, 2008 Have you thought about putting two motors mounted in the rear of the car, each directly to the back wheels? I figure that it might put a lot of extra weight in the back of the car, but you would lose a lot of weight in drive train, which would allow for more battery carrying capacity in the front. That would be a very cool setup. Eliminate the diff, transmission, driveshaft. Plus you could use 2 smaller (cheaper) motors and still exceed the output of one large (expensive) motor. This would also allow for the batteries to be strategically placed as low as possible, with wiggle room to adjust the front/rear weight distribution to be balanced perfectly. The motor to half-shaft connection is the only problem, likely requiring belts or chains of some kind. Quote Link to comment Share on other sites More sharing options...
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