Paul,
I've continued to primarily lurk, and glean some knowledge from you and your
readers here and there. I am always grateful for the work you do and the
information you all share.
I've also been lurking at the midlana build and was wondering if you or any
of the newsletter members have a best recommendation for a transverse (as
opposed to longitudinal) manual transaxle suited to the rotary. I'm
thinking combination of lightest weight with sufficient durability to handle
a p-ported 13b, and possibility of LSD/Torsen tech.
Someone mentioned a volvo m65 was very small and lightweight, but the
arrangement may interfere with the exhaust ports.
-- Michael S. Francisco
Suitable manual transmission are few and far between
that will handle 200 foot pounds of torque and 10,000 RPM.
I would try a Honda, Toyota or Chrysler V6 mini van auto transmission.
All those vehicle have about 230 HP.
The Honda past 1994 and Toyota are best. Chrysler never made
a tx worth a damn.
Convert the valve body to a paddle shifter.
If it is good enough for a F1 driver it should be good enough
for your average boy racer :)
http://www.youtube.com/watch?__v=RbL4U7Rd-tY <http://www.youtube.com/watch?v=RbL4U7Rd-tY>
Paul Lamar
Michael
I have adapted a 6 spd trans from a VW Golf Gti to a P port 13b for a mid
eng sports car. When searching for an appropriate trans, I considered the
Volvo, but they were not widely available. They seemed to be adaptable
because of the wide distance between the input and output shafts. This is
important and I even found a simple formula relating trans torque capability
to this distance. Actually acquired a Nissan Spec V 6 spd, but found the
bolt pattern to be unworkable. Then got a Golf GTI 6 spd which could match
but only with difficulty. BTW both are quite heavy. Had to fab the adapter
plate, flywheel and a custom made intermediate axle shaft. There is no room
for a CV joint right next to the eng rear side plate. This shaft clears the
manifolds well enough, but requires a support bearing with the CV at its
outboard end. In addition to all this, the eng had to be converted to a dry
sump to allow reasonable ground clearance. This installation is yet
untested till I get ECU issues sorted. Good luck
Robert LeClercq
Thanks Robert. Got any pictures?
What is the Gti HP and RPM.
What is the track dimension of the Gti?
Any idea what the weight is on the tranny?
Paul Lamar
In Ca the DMV issues 500 registrations each yr for specialty constructed
vehicles. This is great, includes a smog exemption. When I started my
project car 4 yrs ago, there were rumors of this process ending so I dashed
over on Jan 2 early morn to get in 2nd place in what became a long line. I
got a # about 250. Paid the fees since then while building the car. When I
renewed last mo the agent told me they had not used all 500 last yr. When
complete, brake and lights must be tested and approved, then a CHP visit to
be assigned a VIN.
Robert LeClercq
If by track you mean the c-c distance of the shafts; I don't recall exactly,
but about 7". The Golf is a 2.8L VR6 eng, the trans is O2M model. Don't
have much in the way of pix. What would you want to see?
Robert LeClercq
Track is the distance between center of tire patch to center of tire
patch side to side.
Everything and anything :) If this catches on it could breath new life
into the rotary.
Paul Lamar
OK I thought we were still discussing the trans. Track width is 1.38M (54"),
wheel base 2.32M, wt 695KG (1530#). Imho its too small, but was designed to use
donor parts from a Rover Metro, able to accommodate 1300cc 4 cyl up to 2.6L
V6 Rover eng. Some specs here:
http://www.lightauto.com. Also I have links
to some builder sites. The kit is a GTM Libra which is a 2 seat coupe made
by GTM cars in the UK. I have the next to last one made and the only one in
US afaik. Lots were sold and constructed in UK. Production ended about 4
yrs ago. No successor yet. My build was mostly done in Apr last yr, but I
have had plenty of trouble with solving oil leaks and getting the Autronic
ECU to work since then.
Robert
http://www.pistonheads.com/__roadtests/doc.asp?c=112&i=3202 <http://www.pistonheads.com/roadtests/doc.asp?c=112&i=3202>
The nose is good. Just needs a high wing on the back.
"The core of Libra is a tub-like chassis weighing just 98kg and yet has a
torsional stiffness of 14,000Nm/degree (10,000 ft lb/degree), which compares
with 68kg and 10,133Nm/degree for a bare Elise chassis. The suspension mounted
to it was specially designed for the Libra by specialist engineer"
The chassis sounds good.
Bryn Davies.
Paul Lamar
Robert,
Looks like an amazing project. I would love to see the details of your engine/trans/rear suspension. Thanks for the
response and I will e-mail you at the address you left off this newsletter.
Michael S. Francisco
.
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