ANY way to apply power to the rear wheels?

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ANY way to apply power to the rear wheels?
Topic Started: Oct 15 2010, 09:36 PM (931 Views)
nerys	Oct 15 2010, 09:36 PM Post #1
Grr Posts: 6,410 Group: Valued Members Member #1,240 Joined: Sep 25, 2009 Location Levittown PA USA Year/Make/Model 1994 Geo Metro Xfi	IS there any feasible or remotely practical way to apply power to one of the rear wheels on a metro? An idea hit me with my tiny trailer. if I could install an electric motor in the car and then a battery pack on the trailer ...... I was thinking of a drive wheel on the trailer too but thats risky for 2 reasons #1 stability. will the trailer become unstable under any conditions with power? #2 if it comes loose and retains both motive and power capability :-) wow that would be a neat youtube video :-) any ideas? ideally the motor would be ON the control arm itself so it would move with the suspension. it would just be for tooling around parking lots and coasting and "assisting" with acceleration.



StevieC	Oct 15 2010, 09:41 PM Post #2
Posts: 443 Group: Valued Members Member #1,100 Joined: Aug 14, 2009 Location MI Year/Make/Model 1996 Geo Metro 4-cyl	Nerys, this is something I've also wondered frequently but never bothered to post a thread about!! I figured that if you could get a motor and a separate 12V battery it could assist in acceleration, or maintaining speed when coasting on the highway (making hypermiling techniques more usable). I also thought - when the motor isn't in use, a relay could connect the battery into the car's main electrical system to charge it. Perhaps whenever the engine is idling.



Spock	Oct 15 2010, 11:20 PM Post #3
Live Long and Prosper. Posts: 1,030 Group: Valued Members Member #1,583 Joined: Dec 20, 2009	NERYS, I'm all about this idea. I have thought about it too. I was thinking about removing the spare and mounting an electric motor in there and have a sprocket and chain set up that goes through the floor of the spare area. A couple of batteries and controllers and such would fit nicely in that area too. I think you could get just about everything you need from Mcmaster-carr and then just use a cv axle and hub from a front tire to connect power to one of the rears. I can't explain it all that well, but it's in my head....wish i could draw it on here....I really think this idea has promise. You should go for it!!



mwebb	Oct 15 2010, 11:23 PM Post #4
FOG Posts: 2,609 Group: Tech Certified Member #848 Joined: Jun 8, 2009 Location the peoples republic of new york Year/Make/Model 1996 geo metro 1.o 5sp tbi no ac 2dhb the only option is the cupholders	it is not cheap http://ecomodder.com/forum/showthread.php/electric-car-hub-motor-4958.html or just search under http://www.google.com/search?hl=en&client=firefox-a&hs=gly&rls=org.mozilla%3Aen-US%3Aofficial&channel=s&q=hub+motor+electric+car&aq=5&aqi=g10&aql=&oq=HUB+motor+&gs_rfai= or Pulse jet , much less engineering .... a wee bit noisy



Stately	Oct 16 2010, 12:08 AM Post #5
Geo cheerleader Posts: 1,086 Group: Valued Members Member #2,973 Joined: Aug 17, 2010 Location Bellingham, WA Year/Make/Model 1997 Geo Metro LSi 1.3L AT	Hub motors would work best/simplest for the rear.



mwebb	Oct 16 2010, 12:33 AM Post #6
FOG Posts: 2,609 Group: Tech Certified Member #848 Joined: Jun 8, 2009 Location the peoples republic of new york Year/Make/Model 1996 geo metro 1.o 5sp tbi no ac 2dhb the only option is the cupholders	Stately Oct 16 2010, 12:08 AM Hub motors would work best/simplest for the rear. nope a pulse jet would be much simpler , just a big duct or turbocharger outlet to feed it and it can run on various different fuels. you could mix in "Meredith effect" for a bit more no controllers for the motors no motors much less engineering no heavy batteries much less weight more power noise would be the issue that could not be resolved .... easily



Stately	Oct 16 2010, 12:53 AM Post #7
Geo cheerleader Posts: 1,086 Group: Valued Members Member #2,973 Joined: Aug 17, 2010 Location Bellingham, WA Year/Make/Model 1997 Geo Metro LSi 1.3L AT	Semantics. Perhaps "practical" instead of "simple" would be more accurate?



nerys	Oct 16 2010, 08:59 AM Post #8
Grr Posts: 6,410 Group: Valued Members Member #1,240 Joined: Sep 25, 2009 Location Levittown PA USA Year/Make/Model 1994 Geo Metro Xfi	yeah any idea how HOT a PJ gets? you learn quickly just what people mean when they say WHITE HOT because they literally get WHITE HOT. ie I think other parts of the geo itself would start melting and well Fuel Economy? forget about it they are pigs :-) but they sound cool!! PpppzzzzzzzbbbPpppzzzzzzzbbbPpppzzzzzzzbbbPpppzzzzzzzbbb PpppzzzzzzzbbbPpppzzzzzzzbbbPpppzzzzzzzbbbPpppzzzzzzzbbb PpppzzzzzzzbbbPpppzzzzzzzbbbPpppzzzzzzzbbbPpppzzzzzzzbbb....... I would be using a CHEAP motor (hub motors are nuts). probable 72volt or even less. so it would need to be some sort of chain drive or something like that. Also don't want to use my trunk space as well I use it daily and I like having a spare. I was hoping to avoid the suspension movement issues. While I could mount a spare to the trailer that would mean I always have to have the trailer with me and this setup would only be useful for local driving. would hurt FE for long haul Highway driving. Edited by nerys, Oct 16 2010, 09:00 AM.



Stately	Oct 16 2010, 10:28 AM Post #9
Geo cheerleader Posts: 1,086 Group: Valued Members Member #2,973 Joined: Aug 17, 2010 Location Bellingham, WA Year/Make/Model 1997 Geo Metro LSi 1.3L AT	How much HP could be applied to the rear before requiring reinforcement? As is, they're built for drag backwards, not propulsion forwards. Also, hub motors are stupid expensive now--but as production volume goes up, prices should fall. Same with Lithium-Ion batteries. It would be cool to have all four wheels with hub motors (symmetric AWD), and no ICE, tranny or gas tank to worry about. Weight and space savings would yield plenty of battery storage distributed around with low center of gravity.



bogs	Oct 16 2010, 11:09 AM Post #10
Duct tape heals all wounds Posts: 8,862 Group: Moderator Member #1,286 Joined: Oct 5, 2009 Location Possum Lodge Year/Make/Model 1996 Metro Sedan / 4 cylinder / 5 speed	Well, considering what your describing, if I were to try it myself I'd go with a CV shaft to one wheel, a gear on the end, under-mount the electric motor to the unit body and drive the one wheel with a chain. You'd want to have the motor mounted as stiffly as possible, the CV shaft would take care of rotation/moving with the suspension. You would still have to come up with a controller and wiring which would be far more difficult for what your describing (the take off assist / coasting aspects, the 'tooling around parking lots' part it could be separate from your other drive train).



nerys	Oct 16 2010, 12:32 PM Post #11
Grr Posts: 6,410 Group: Valued Members Member #1,240 Joined: Sep 25, 2009 Location Levittown PA USA Year/Make/Model 1994 Geo Metro Xfi	No controller needed really. Just on off. (low power here) How would I install a CV on the rear though? thats the question. right now its just a spindle and brake. I would have a button on the shifter. Press it motor is on release it motor is off. Super Duper simple redneck hybrid :-)



mjspiess	Oct 16 2010, 12:45 PM Post #12
Posts: 1,755 Group: Valued Members Member #575 Joined: Mar 15, 2009 Location Lansing, MI 48917 Year/Make/Model '95 Geo Metro XFi	Here's a couple other options for you nerys if you haven't seen these: http://ecomodder.com/forum/showthread.php/powered-trailer-idea-ev-pusher-trailer-make-conventional-2975.html http://ecomodder.com/forum/showthread.php/electric-fifth-wheel-diy-through-road-parallel-hybrid-1191.html Oh, and be careful how you use the word "hybrid" on this forum. iamgeo tends to lose sleep over it... Pretty pathetic, but I thought I'd give you a heads up.



StevieC	Oct 16 2010, 03:15 PM Post #13
Posts: 443 Group: Valued Members Member #1,100 Joined: Aug 14, 2009 Location MI Year/Make/Model 1996 Geo Metro 4-cyl	Yeah, how to mount a CV? This is an important question... Nerys, this thread is exciting. I hope it makes progress.



Metroic	Oct 16 2010, 06:15 PM Post #14
New Member Posts: 29 Group: Members Member #2,578 Joined: Jun 22, 2010 Location SF Bay Area Year/Make/Model 1989 Metro base 5sp 1.0	I'm thinking cog-belts driving a gear attached to inner rim and motors mounted- 1) above the wheel or 2)front or back. motor mount would depend on particular car's body and where would be a good place to hack the wheel well. Then again, many cars might have enough to squeeze in a motor if tires are stock.



nerys	Oct 16 2010, 06:34 PM Post #15
Grr Posts: 6,410 Group: Valued Members Member #1,240 Joined: Sep 25, 2009 Location Levittown PA USA Year/Make/Model 1994 Geo Metro Xfi	hey now THIS is a neat idea and I already have the double pully (I guess someone replaced it at some point) Edited by nerys, Oct 16 2010, 06:35 PM.



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