Ron, A lot of conversions use the existing transmission to keep the electric motor spinning faster and running cooler, a lot use second gear. You could research your rear axle ratio, and also the two speed transfer case to see if you can go without the transmission. If the two speed transfer case is not noisy in low range, and will give the correct motor rpm, that could work. Some of the older Datsun mini-trucks had a rear axle ratio that would have the drive shaft spinning faster and some conversions did without the transmission. The few I looked at on the EV Album had a 4.88 rear end. Offhand I could not find the Datsun without the transmission. Maybe my mind is playing tricks on me.
http://www.evalbum.com/1366 I like this Datsun. The DC motor is salvaged from a forklift and rebuilt by the owners themselves with help from a pro, Jim Husted. http://www.evalbum.com/1524 The one 1992 Daihatsu Hijet on the EV Album did away with the transmission and reports a 6.83 to 1 final drive ratio. With a large enough motor and not overly heavy with batteries that sounds like it would work out well. It is using Lithium batteries, a plus to save weight. And the small tires also factor into the "turn the motor faster" equation. This Hijet reports 5500 rpm at 53 mph maximum speed with a 72 volt battery pack. This is using an AC 3-phase motor. 5500 rpm could be a little too much for a large diameter DC powered motor. You could use two smaller diameter DC motors that possibly could take a higher rpm. http://www.evalbum.com/3823 Good luck and be safe. Alan -----Original Message----- From: EV [mailto:[email protected]] On Behalf Of [email protected] via EV Sent: Thursday, May 26, 2016 1:40 PM To: EV List Subject: [EVDL] Conversion planning So I blew up the engine in my Japanese mini-truck, a Daihatsu Hijet. There is a fellow Canadian who has posted his conversion photos of the same vehicle. He left the transmission (and clutch?) in place. That might be the most cost effective approach, but I'd like to know what I need to just go directly to the transfer case. (It's a 4 wheel drive with 2-speed transfer case) I know I'll need to manufacture a cover with a seal once the transmission is out, but I'm more concerned with motor sizing/loading. If I'm also going to need a gear reduction, then I'm not sure it makes sense to go that route. I know that conversion is likely going to be more expensive than replacement, but I would love doing the conversion as a recreational activity. Thanks Ron -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20160526/ea20f42b/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
