1985 IMSA Ford Semi-Repro Questions

  • Context: Automotive 
  • Thread starter Thread starter average guy
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Discussion Overview

The discussion revolves around the engineering features and design considerations of a car referred to as the "Ford Semi-Repro," with a focus on its construction methods, chassis design, and comparisons to other vehicles like Porsches and IMSA cars. Participants explore various technical aspects, including engine placement, frame design, and body shape.

Discussion Character

  • Technical explanation
  • Exploratory
  • Debate/contested

Main Points Raised

  • Some participants discuss the advantages of mid-engine layouts versus front-engine configurations, expressing personal preferences.
  • Questions arise regarding the definition and characteristics of a "Ford Semi-Repro."
  • Participants propose specific engineering parameters for the vehicle, including the use of a V8 engine, front mid-engine placement, and a straight axle design.
  • There is mention of utilizing a "mix and match" system for building, inspired by 1960s Super Modified chassis designs.
  • Some participants highlight the importance of frame design, suggesting rectangular tubing and specific dimensions for the chassis.
  • One participant notes the aesthetic influence of the 1985 IMSA car on their design approach.
  • There is a reference to the expected availability of 1/4 scale chassis pictures in the near future.

Areas of Agreement / Disagreement

The discussion features multiple competing views regarding design preferences and engineering choices, with no clear consensus reached among participants.

Contextual Notes

Participants express varying assumptions about chassis design and engineering methods, with some details remaining unresolved, such as specific definitions and the implications of certain design choices.

Who May Find This Useful

Individuals interested in automotive engineering, car design, and the construction of racing vehicles may find this discussion relevant.

average guy
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mechanical engineers
what engineering features are on
car like this?
it looks like the mark for me.
mid-engine has it's plusses, but
i think i'll stick with engine in front of me.

Have A Nice Day!
 
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spinnor
can you tell the difference between a Porsche
and a Ford?

Have A Nice Day!
 

Attachments

  • Ford Motorsports Mustang GTP.jpg
    Ford Motorsports Mustang GTP.jpg
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auto engineers
parameters:
1 V8 & automatic
2 Front Mid Engine like Wikipedia pic but engine set back more
3 regular rear axle, like ford 9"
4 front end Super Modified style straight axle, i mean STRAIGHT no drop.
5 4 link locators front & back, once again ala Super Modified
6 delete 'roof', just roll bar w/single brace
7 'hang on' fiberglass body.
Coyote Supercar building method.
flat vertical and horizontal surfaces with radiused corners.
question:what's that body shape called generally?
the bodies like this IMSA car and Porsche 954 le mans cars, Paul Newman car.
boxes with a front and rear cap isn't a good name.:smile:


Have A Nice Day!
 

Attachments

  • Front Mid Engine.png
    Front Mid Engine.png
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Last edited:
These were successful whether turbo 4 or 7 liter V-8.

pruett88_1.jpg


3430237431_c0a61bb24f_b.jpg


2331416995_101cae3d9d_o.jpg
 
howler monkey
let me know if you enjoy the following
'Automotive Engineering' aspects of this that follow.
i'm using the 'mix and match' system of building.
first time i saw 60's Super Modified chassis i thought
i'm going to use those ideas someday.
frame like Lough & Lough.
if frame is 24" tall.
that gives you 24" to bounce the front straight axle
up & down in.
it swings on a four link.
frame is rectangular 24" tall & @40" wide.
the beauty of Super Modified frame is
longitudinals are straight as an arrow whole length.
the IMSA car thing comes in with the look of
THAT '85 EXAMPLE.

Have A Nice Day!
 
auto engineers
i'm going to use same method as
these sprint car frames.
main part of frame cross section is rectangular.
whole frame is built on the square.
i'm going to use rectangular tubing.

Have A Nice Day!
 

Attachments

  • Sprint Car Chassis's 3.JPG
    Sprint Car Chassis's 3.JPG
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Do you have the chassis built?
 
chris
1/4 scale chassis pic's should be
available in 3-4 weeks.

Have A Nice Day!
 

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