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Discussion Starter #1
Re: [EVDL] Motor coupler issues / was Looking for a ConversionKitfor a 1929 Ford.

If a motor that does not have a pilot bushing hole, what is normally done,
is to have the pilot bushing hole machine in the motor coupler. The only
problem here is that this pushes your transmission back more and the adapter
plate between the motor and transmission bell housing has to be made
thicker.

I have use both types in my EV. The motor with the pilot bushing in the
motor shaft, the adapter plate only has to be 1 inch thick. The pilot
bushing in the motor coupler, the adapter plate had to be 2.75 inch thick.

I went back to the 1 inch thick adapter plate using a modified manual shift
semi-automatic TH-400 transmission that does not need a pilot bushing hole.
The pump drive shaft bolts right up to the motor coupler which I had to
shorten the back of the motor coupler about a 1/4 inch, because this type of
transmission shaft connection needs about 1/8 to 3/16 inch end play, so it
does not bottom out inside the transmission.

This is about the same as you do for a pilot shaft for a manual
transmission, you do not want the pilot shaft to bottom out in the pilot
shaft bushing, leave about 1/8 inch clearance in the pilot shaft bushing.

It is best to make the motor coupler first with a pilot bushing install in
it. The depth of the pilot bushing into the motor coupler flange should be
the same dimension as it would be on a crank flange for that engine that was
use for that transmission. Then install the motor coupler on the motor
shaft and insert the transmission input pilot shaft into the pilot shaft
bushing and leave about 1/8 inch clearance, so it does not bottom out.

If you can, leave the bell housing off, so you can see what you are doing.
Next, measure the distance from the transmission to the motor face and
measure the depth of the bell housing. The difference is depths between the
two will be the thickness of your motor adapter plate that is to fit your
transmission bell housing.

With some machine shops, you have to guide them step by step what has to be
done, while others, there is no problems.






----- Original Message -----
From: "Marty Hewes" <[email protected]>
To: "Electric Vehicle Discussion List" <[email protected]>
Sent: Thursday, August 09, 2007 8:48 AM
Subject: Re: [EVDL] Motor coupler issues / was Looking for a
ConversionKitfor a 1929 Ford.


> I'm just getting my Chevy Turbo 350 buttoned back up. My next step is to
> take the trans, the motor, and a chevy crank over to the machine shop and
> asking if he can make taper lock hubs that look like SBC cranks. I hope
> he's interested in some work.
>
> One thing I'm scratching my head about. The ADC 9" motor I picked up used
> does not have a pilot bearing hole in the output shaft, which sounds like
> a
> good thing for strength. Just the keyway. Were they all supposed to have
> that pilot hole? My motor does not have an ID plate on it, and it's been
> chrome plated. Makes me wonder what else is different about mine that may
> affect the project, especially if the original shaft end with pilot hole
> was
> cut off.
>
> I'm clueless about couplers, what's a DE plate? A coupler that accepts
> standard taper lock bushings maybe?
>
> ----- Original Message -----
> From: "Jeff Shanab" <[email protected]>
> To: <[email protected]>
> Sent: Thursday, August 09, 2007 9:12 AM
> Subject: Re: [EVDL] Motor coupler issues / was Looking for a Conversion
> Kitfor a 1929 Ford.
>
>
> > For transmision conversions for RWD, it would be cool if someone came up
> > with a new DE plate that had a big bearing and a large flange.
> > the shaft in this beast would present a SBC crank cut right out of the
> > solid.
> >
> > _______________________________________________
> > For subscription options, see
> > http://lists.sjsu.edu/mailman/listinfo/ev
> >
> >
>
>
> _______________________________________________
> For subscription options, see
> http://lists.sjsu.edu/mailman/listinfo/ev
>

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70 Posts
Discussion Starter #2
Re: [EVDL] Motor coupler issues / was Looking for a ConversionKitfor a 1929 Ford.

Marty,

When I got my taperlock adapter from Electro Automotive, they
machined the pilot bushing hole into the adapter. They even installed
my pilot bushing for me. That way you get the full clamp of the shaft
and the alignment improvement with the pilot bushing.


Jody

-----Original Message-----
From: [email protected] [mailto:[email protected]] On
Behalf Of Jim Husted
Sent: Thursday, August 09, 2007 11:10
To: Electric Vehicle Discussion List
Subject: Re: [EVDL] Motor coupler issues / was Looking for a
ConversionKitfor a 1929 Ford.


--- Marty Hewes <[email protected]> wrote:

The ADC 9"
> motor I picked up used
> does not have a pilot bearing hole in the output shaft, which sounds
> like a good thing for strength. Just the keyway. Were they all
> supposed to have that pilot hole? My motor does not have an ID plate
> on it, and it's been chrome plated. Makes me wonder what else is
> different about mine that may affect the project, especially if the
> original shaft end with pilot hole was cut off.
>
> I'm clueless about couplers, what's a DE plate? A coupler that
> accepts standard taper lock bushings maybe?

Hey Marty

ADC does not make their shafts with the pilot hole.
I've cut some into a couple for those who needed it.
I believe I saw pics of that chrome plated ADC9 and it's an ADC 9 (if
it's the one I saw) and has an OEM shaft. Boring out the hole isn't a
hard machining job but would require you to remove the armature from the
motor. IMO it does weaken the shaft but I have no proof or data to
confirm that.

Hope this helps.
Jim Husted
Hi-Torque Electric





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