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DavePropst.com
Welcome...
This website describes services
we provide, takes a look at equipment and methods developed in house, and
presents detailed technical content on many subjects.
A large array of car-building equipment, as
well as technique used in conjunction with it, has been
refined over a period of many years. This equipment or system encompasses all areas of car
construction from engine, drivetrain, suspension and frame to body and
interior. The express purpose of this shop equipment is the design and construction
of specialty cars to high levels of either appearance or performance (or
both) by making use of 3D methods.
As a key part of their effort to
provide products and services the consumer can afford to purchase, both the
auto manufacturing and auto collision repair industries have, for decades,
considered 3D coordinate equipment and methods as being standard, everyday
practice. We merely apply it to specialty car building and restoring. The underlying
concept is to avoid the
inefficiency and lack of 3D coordinate capability of
equipment commonly used in building one-off hand-fabricated cars; i.e. jack
stands or chassis jigs supplemented with
C-clamps, tape measures, centerlines of string or piano wire, various carpentry tools such
as squares, plumb lines, 3-4-5 strings, and, at times, collision repair
industry
measuring devices and racks. Certainly it is possible to build a quality car using just
such systems but many man-hours are consumed by the inefficiency inherent in
using tools and equipment for purposes for which they were not specifically
designed. This may well be acceptable or even entirely appropriate for a
home-shop
do-it-yourself operation. However, such systems can mean a very great deal
of unnecessary expense and frustration for a paying customer at a pro shop (or any shop that charges for services). Instead of this traditional
equipment of specialty car construction, our system uses purpose-built
equipment such as tables, lifts, laser-based 3D measuring, and --most
importantly of all-- true 3D clamping and jigging fixtures. While the
measuring system is indeed a necessary tool, it is but one small part of the
bigger picture. The table and 3D fixtures are
what really allow the system to accomplish the things it can. This equipment is used in combination with digital photography, computers,
wheel scales, etc. to achieve increases in capability, efficiency and speed.
Substantial labor savings can be achieved during design and fabrication
stages thereby reducing project cost. Supplementing
this central system are other services relative to custom building cars,
namely, structural fabrication, body fabrication, engine building, extreme
high-end paint, interior work, etc. Additional to that are performance
oriented services such as suspension performance development and
induction/camshaft/exhaust performance development via software
analysis, data-logging, flow testing, engine testing, and so on.
Subsequent pages of this website
provide thorough explanation of what this car building system is.
Initially however, it is helpful to explain what the system does. For a
brief preview of its capabilities refer to the description and pictures at
System Preview. Follow that with
Shop Overview,
which explains how all of the equipment and technique is
interrelated. Also, video coverage of some equipment is available in the Ron Covell Shop Tour
Volume II video.
Detailed, technically oriented information
is found in the 'Technical' section of the menu at left. (Even though this site is by design easy to
navigate, the Site Help page is recommended
prior to reading the 'Technical' section of the website.)
Featured Items
Wheeling Machine Wheels
Tech Article:
English wheel topics. Wheel width discussion, adjustable width upper wheel, pivoting
lower wheel, lower wheel axles/bearings. Image count: 35. Word count: 8450.
Revised 4/17/2003.
H-Frame Press
Tech Article: Description and pictures of large
H-frame hydraulic press. Image count: 26. Word count: 2195. Revised
8/22/2007.

Port Flow Test Tools
Tech Article:
Cylinder head flow test fixtures with Edelbrock Performer RPM Ford FE head
as model. Image count: 18. Word count: 985. Revised 4/22/2003.
McLaren M20 at MHAR 1983
Photo Album: 1972 McLaren M20/Chev 494 (M20-2) at Turn
11(9) Laguna Seca. This is a 3.6+ MB download.

Blast Cabinet Part 1
Tech Article: First article in a series of three.
Description and pictures of large blast cabinet designed for stripping
automotive body panels. Image count: 16. Word count: 6400. Revised 6/1/2005.

Scheduled Items
Tech article, English wheel infinitely large upper wheel.
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Street Rod & Custom, Vintage Road Race, Vintage Drag Race,
Musclecar.
Very low hourly rates. Shop labor rate of $30/Hr.
Parts, materials, and paint products at cost.
Thirty-eight years full-time career experience in all areas of
performance and specialty work. Twenty-six years at current location.
Design, development, and construction services.
Engine, drivetrain, suspension, sheetmetal, paint and
interior.
Legal procurement of, legal sale of, and legal application of
all paint systems including lacquer.
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