I forgot to mention in my last e-mail about the motor coupler, that there is
shafts that come in 6-inch lengths with only two set screws to fit any key
shaft you want. They are call solid shaft couplers.
I just bought one last month for extending the pilot shaft off the front of
the motor about another 3 inches. I cut it in half and install two more set
screws. I got my from a machine shop that sells Browning or Dodge power
transmission items, such as pulleys, belts, clutches, shafts, bearings, etc.
As for bearings, I normally change the motor bearings about every 10 years
at the time, I break the motor down for cleaning, commentator
reconditioning, re enamel, testing and paint. I use GE high temperature
motor seal bearings that are design for that motor that I get from a motor
repair shop. Sometimes you can get this bearings from a Bearing Sales which
other brand like TRW are equal to the electric motor brand specifications.
I just finish a new design of a motor coupler for a 11 inch motor that is
now at the machine shop right now. They cut off the crank flange of a new
steel forge crank, (not cast) which is a large flange. They machine it for
a taper lock bushing and it allows my transmission pilot shaft go all the
way through into the motor with is bore out for a transmission pilot
bushing. This can be done, because the motor shaft is 1-3/8 inch diameter.
I than can shorten up my overall distance of the motor-transmission length
by 2 inches.
Instead of using a flywheel or clutch, I use a another steel flange that
bolts directly to this coupler flange which has a machine spline tube that
slides into this flange. The transmission pilot shaft than slides into this
tci.com has these tubes that are normally design for automatic
transmissions. The transmission pilot tube slides into this tube.
In your case, you could cut this tube down to size and weld the clutch disk
spline to this tube or to a section of a transmission input shaft that can
be insert into this tube.
It is best to not have such a solid connection between the motor and
transmission, because the thrust between the transmission and motor can take
out these bearings.
This transmission tube is allow to float about 1/8 to 3/16 of a inch to
allow flexing. This is what the clutch plate does in a manual transmission
or a flex plate does in a automatic.
----- Original Message -----
From: <[email protected]
To: <[email protected]
Sent: Thursday, September 13, 2007 12:08 PM
Subject: Re: [EVDL] Motor Coupler
> So it seems that this really is no such thing as "internally keyed tubing
> stock" after all.
> Thanks to Bob Martin and Paul Gooch who pointed out the One-Piece
> Shaft Couplings from McMaster Carr and Ruland, which seem to be the same
> Thank you,
> Dave Delman
> 1981 Electric DeLorean Project
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