Hello Daniel
You will be hard pressed to find
a decent new or used enclosed
car hauler trailer readily available
because of the minimum clearance
at the rear door that you require.
Anything a dealer carries on a lot
will be what most customers are
shopping for to buy & take home.
So - you are going to see 78 inch
rear door clearance as the max
on most dealer lots.
Most likely - one will have to be
custom built to your specs.
My recommendations after
lessons learned personally
transporting over (450) Model T
vehicles of every configuration
since 2006:
Trailer Construction Design
Minimum Requirements:
An 8.5 wide enclosed car hauler.
Coffin front to maximize usable
interior space - a v-nose does
not reduce wind drag - it takes
away from usable interior space.
Minimum 20 foot box to allow
for an average full size vehicle
and/or unanticipated extra parts
and tools and maybe a cot to
sleep on if needed because you
will find extra room will be needed
and greatly appreciated.
5200 pound torsion tandem spread axles
16 inch ST radial tires rated at 12 ply
with highway tread = no flats.
Roof - sidewall - floor minimum 16β on center.
1/4β minimum thick x 6 inch minimum
full tube construction full perimeter frame
with sidewalls built on the frame.
Full welds.
No outriggers off of a narrower structural design.
One piece roof with no roof vents
or skylights - no leakage possibility.
Adjustable sidewall vents at front and
and rear of trailer - minimum of four
Minimum 0.30β aluminum exterior
siding attached at every side
structural member with screws.
You can opt for no interior sidewall
covering or ceiling covering to save
on weight and construction cost.
Sidewall and roof insulation
provide no benefit.
Center tube from tip of
extended minimum 36 inch
trailer tongue continuous to first axle.
Removable - adjustable bulldog
coupler in 4β channel rated at
12K minimum.
3/4β treated plywood floor
screwed to each floor crossmember
at 12β minimum intervals.
No D rings - install surface mount
etrac at custom intervals.
You need a minimum nominal
door clearance of 85 inches - personally
I would have a 96 inch rear door.
36β wide x 72β tall flush mount doors
that have the hinge side on the front
side of the trailer and the lock side
on the rear so if the door accidentally
opens while moving it will not blow off.
These doors should be placed inline
directly across from each other on the
passenger and curb side on either
side of the trailer located at a distance
that allow center access to where you
plan to place your Model T in the trailer
but at least one foot in front of the
interior trailer wheel well box so as
not to comprise sidewalk integrity.
Fold out steps centered under each door
and a grab handle at a comfortable height
on the inside and outside of the trailer.
Junction box at tongue separate
from battery box for 12VDC breakaway
battery at tongue so you have splice point.
30 amp 12VDC charge line ran to inside
front of trailer to charge 12VDC deep cycle
battery from tow vehicle via 7 way plug.
12VDC led trailer lights at locations you
prefer that will adequately light the
interior at night with doors closed
that have feed from 12VDC battery
at front of trailer - not tow vehicle.
Trailer light switch at rear & front door.
Exterior led combination clearance
and hazard and turn signal lights
at fender wells.
Rear adjustable 12VDC flood light(s)
Installed on either side of rear door
controlled by switch at door(s).
FJ