Re: Jetta Hybrid Conert?

["Rich Weiss" <richheidi@techheadnet.com>]

If you just want the electric just for cruise speeds, no trans would be ok,
but I was planning on full electric for "stop and go", as an option.

2]Honda trans are transverse, so the motor is crossways, attached to the
trans. Running a trans backwards would be a risk, the oiling is based on the
gears pushing it [the oil] through channels, and you would probably starve
some bearings.

3]"SuperSimple" add an electric motor that could contribute 50-80% of cruise
power, and a pack with a series/parallel contactor set. flip the switch and
save gas at cruise.

Rich

----- Original Message -----
From: "Bob Oldham" <boldham@smv.org>
To: <ev@listproc.sjsu.edu>
Sent: Wednesday, October 31, 2001 10:18 AM
Subject: RE: Jetta Hybrid Conert?


> Why would you need a transmission on the rear electric drive? If the
> final output from a transmission is 1:1 to the drive shaft, why not just
> drive direct to the rear differential and use the ICE for accelleration
> boost and base-lever cruise power? In theory on the straight and level
> you could drive all electric. Or if you could get a small overdrive unit
> between the motor and differential, you could have two speeds forward
> for the electric.
>
> What would happen to the transaxle of a FWD vehicle if you turned it
> around? Would running it backwards hurt it? If it wouldn't, you could in
> theory run a normal rotation motor (CCW?) on it using a Honda
> transmittion and the motor would be in the former trunk. Possible?
>
> Bob Oldham
>
> -----Original Message-----
> From: Rich Weiss [mailto:richheidi@techheadnet.com]
> Sent: Wednesday, October 31, 2001 10:54 AM
> To: ev@listproc.sjsu.edu
> Subject: Re: Jetta Hybrid Conert?
>
>
> The drive shaft to a rear drive axle will turn about the engine speed in
> 4th
> gear [manual] or Drive [for an automatic]. For most "small" cars this
> will
> be at least 4000 RPM at 60 mph
>
> 13 inch tires turn about 950 revolutions per mile, while large
> [235/75R15]
> tires are about 720 revs/mi. The "final drive" ratios are up to 5:1 in a
> small engined car, with down to 2:1 for a large V8, without overdrive
>
> I would think the easiest "hybrid" to construct would take a 84-92 Honda
> Civic wagon, or a Toyota Tercel, or Corolla wagon. All these were
> available
> as 4WD. [I'm sure there're other similar combinations, Subaru comes to
> mind
> also]
>
> Install the "4wd" rear axle in your 2wd car, it bolts up to the chassis.
> Install a small [6.7" ADC for example] motor in the tunnel, and follow
> it
> with a small manual trans, like a pre 76 Volvo. Now depending on how
> many
> batteries, and how you set up the controls, you can go all electric, all
> IC,
> or any combination. Adding 5 electric horsepower, at cruising speed
> would
> REALLY cut fuel consumption.
>
> Obviously this would require "lumps" in the floor/tunnel, but easily
> dooable.
>
> Rich
>
> ----- Original Message -----
> From: "VanDerWal, Peter" <vanderwp@fhu.disa.mil>
> To: "'EV List'" <ev@listproc.sjsu.edu>
> Sent: Tuesday, October 30, 2001 2:32 PM
> Subject: Re: Jetta Hybrid Conert?
>
>
> > I've been thinking about this idea and using the
> motor-in-the-driveshaft.
> >
> > I just noticed a potential problem.  Doesn't the drive shaft only spin
> at
> > about 300 rpm at highway speeds?  That's way to slow for most electric
> > motors.
> > Not an insurmountable problem, but something to consider.
> >
> >
> >
>
>