Comments on: Long Overdue: EV Miata First Start Video http://acuteaero.com/2009/10/06/long-overdue-ev-miata-first-start-video/ Mon, 23 Aug 2010 05:51:09 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: DIY Electric Vehicles « galvata.com http://acuteaero.com/2009/10/06/long-overdue-ev-miata-first-start-video/comment-page-1/#comment-9203 DIY Electric Vehicles « galvata.com Wed, 19 May 2010 15:36:01 +0000 http://acuteaero.com/?p=472#comment-9203 [...] the video of the first [...] [...] the video of the first [...]

]]> By: Clint http://acuteaero.com/2009/10/06/long-overdue-ev-miata-first-start-video/comment-page-1/#comment-6476 Clint Sat, 03 Apr 2010 01:20:13 +0000 http://acuteaero.com/?p=472#comment-6476 Damn that is sweet!!! I give many kudo's to your friends and yourself for showing just what can be done in someones garage. I think your a role model for others in this nation and your a beacon of hope in the quest for no more oil dependance. I have been thinking about a lil project myself with a bike to start then work up. I Know it can be done and your proof that with a lil knowlege and labor it can be done. Again blessings to your friends and yourself and keep us posted on your sweet ride. Damn that is sweet!!! I give many kudo’s to your friends and yourself for showing just what can be done in someones garage. I think your a role model for others in this nation and your a beacon of hope in the quest for no more oil dependance. I have been thinking about a lil project myself with a bike to start then work up. I Know it can be done and your proof that with a lil knowlege and labor it can be done. Again blessings to your friends and yourself and keep us posted on your sweet ride.

]]> By: Henry http://acuteaero.com/2009/10/06/long-overdue-ev-miata-first-start-video/comment-page-1/#comment-4809 Henry Sun, 28 Feb 2010 09:47:34 +0000 http://acuteaero.com/?p=472#comment-4809 I considered running a direct drive system back when I was planning the conversion- the advice I got convinced me that that was not the way to go. In order to run gearing capable of reasonable high speeds direct drive would necessitate usage of a much larger motor and more current to still accelerate reasonably. The nature of the series wound DC motors does not particularly lend itself to single ratio direct drive except in low speed or light weight or extremely high power drag racing applications. In order for normal speeds and acceleration in a regular, heavy car you need to use a vastly over-specified motor/controller system for direct drive, and end up with lower efficiency at the end of it all- Using a stock transmission is widely recognized as the way to go. Of course, many AC systems are better for direct drive, with a wider RPM range on the motor- there are lots of ways to go. I considered running a direct drive system back when I was planning the conversion- the advice I got convinced me that that was not the way to go. In order to run gearing capable of reasonable high speeds direct drive would necessitate usage of a much larger motor and more current to still accelerate reasonably. The nature of the series wound DC motors does not particularly lend itself to single ratio direct drive except in low speed or light weight or extremely high power drag racing applications. In order for normal speeds and acceleration in a regular, heavy car you need to use a vastly over-specified motor/controller system for direct drive, and end up with lower efficiency at the end of it all- Using a stock transmission is widely recognized as the way to go. Of course, many AC systems are better for direct drive, with a wider RPM range on the motor- there are lots of ways to go.

]]> By: Typhoon http://acuteaero.com/2009/10/06/long-overdue-ev-miata-first-start-video/comment-page-1/#comment-4805 Typhoon Sun, 28 Feb 2010 05:51:04 +0000 http://acuteaero.com/?p=472#comment-4805 Cool,but have you considered removing the transmission and simply using the motor on its own? The power curve could be remapped in order to provide best acceleration and best economy. I would have a feeling you would need a tougher diff though to handle the sudden torque at 0> RPM Cool,but have you considered removing the transmission and simply using the motor on its own? The power curve could be remapped in order to provide best acceleration and best economy. I would have a feeling you would need a tougher diff though to handle the sudden torque at 0> RPM

]]> By: Mo http://acuteaero.com/2009/10/06/long-overdue-ev-miata-first-start-video/comment-page-1/#comment-4760 Mo Sat, 27 Feb 2010 12:25:32 +0000 http://acuteaero.com/?p=472#comment-4760 Brilliant! can we have a breakdown of costs? Brilliant! can we have a breakdown of costs?

]]> By: Rob in Belfast http://acuteaero.com/2009/10/06/long-overdue-ev-miata-first-start-video/comment-page-1/#comment-4438 Rob in Belfast Thu, 18 Feb 2010 14:44:45 +0000 http://acuteaero.com/?p=472#comment-4438 Nice work, Henry, and yes, I am insanely jealous. Firstly that you have the know-how to do it, secondly that you found the time to do it and thirdly that you have time to enjoy it. I need to reschedule my time better! Over here in the UK, we just call them MX-5's and they are still very desirable. An EV version just tops the lot. I guess it if you found a way to install a small gas engine that runs on Hydrogen, you could extend the range somewhat. Go Henry and good health to enjoy it! Cheers! Nice work, Henry, and yes, I am insanely jealous. Firstly that you have the know-how to do it, secondly that you found the time to do it and thirdly that you have time to enjoy it. I need to reschedule my time better!

Over here in the UK, we just call them MX-5′s and they are still very desirable. An EV version just tops the lot. I guess it if you found a way to install a small gas engine that runs on Hydrogen, you could extend the range somewhat.

Go Henry and good health to enjoy it!

Cheers!

]]> By: Henry http://acuteaero.com/2009/10/06/long-overdue-ev-miata-first-start-video/comment-page-1/#comment-4410 Henry Wed, 17 Feb 2010 07:07:47 +0000 http://acuteaero.com/?p=472#comment-4410 I just really wish I could finally deal with the aches and pains of charging these picky, tricky AGM batteries. Then I'm likely to finally be able to enjoy the car- there's lots there to enjoy, but charging the like $2k of batteries with my homebrewed balancing system is still a PITA. Still work to be done. I'm looking forward to finally getting to enjoy it- finally. I just really wish I could finally deal with the aches and pains of charging these picky, tricky AGM batteries. Then I’m likely to finally be able to enjoy the car- there’s lots there to enjoy, but charging the like $2k of batteries with my homebrewed balancing system is still a PITA. Still work to be done. I’m looking forward to finally getting to enjoy it- finally.

]]> By: Henry http://acuteaero.com/2009/10/06/long-overdue-ev-miata-first-start-video/comment-page-1/#comment-4409 Henry Wed, 17 Feb 2010 07:05:08 +0000 http://acuteaero.com/?p=472#comment-4409 There is actually an electric diaphragm vacuum pump to power the vacuum booster. It's the most annoying, noisy part of the car, actually. The range is likely about 20-30 miles, but I haven't stressed it. Charging time varies between about 3-7hrs, depending on depth of discharge and service capacity. There is actually an electric diaphragm vacuum pump to power the vacuum booster. It’s the most annoying, noisy part of the car, actually. The range is likely about 20-30 miles, but I haven’t stressed it. Charging time varies between about 3-7hrs, depending on depth of discharge and service capacity.

]]> By: Henry http://acuteaero.com/2009/10/06/long-overdue-ev-miata-first-start-video/comment-page-1/#comment-4408 Henry Wed, 17 Feb 2010 07:03:30 +0000 http://acuteaero.com/?p=472#comment-4408 It's actually just as fast, if not faster jumping on the throttle in gear instead of dropping the clutch- the motor is absolutely most powerful in the low RPM range. I've tried it both ways :) It’s actually just as fast, if not faster jumping on the throttle in gear instead of dropping the clutch- the motor is absolutely most powerful in the low RPM range. I’ve tried it both ways :)

]]> By: Kevin http://acuteaero.com/2009/10/06/long-overdue-ev-miata-first-start-video/comment-page-1/#comment-4403 Kevin Wed, 17 Feb 2010 00:18:56 +0000 http://acuteaero.com/?p=472#comment-4403 Great job! Is that hmmmmmm I hear because of the rotary batteries? ;) Great job! Is that hmmmmmm I hear because of the rotary batteries? ;)

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