...stands firm on a core value system that embraces Innovation,
Quality and Service. HDT USA delivers uncompromising technology,
dynamic engineering and revolutionary design to its customers in
every product. The company's size, expertise and intensity allow
for greater flexibility developing leading edge technology for the
motorcycle and small diesel engine markets. We are honored
to serve the men and women of our Armed Forces by providing the
best equipment possible. HDT USA is proud to provide the best in
diesel motorcycle technology to both our government and civilian
The HDT motorcycle diesel engine is based on state-of-the-art high-speed
automotive diesel engine technology, engineered into a complete
power unit suitably sized and packaged for installation in a compact
on/off road motorcycle.
basis of the design is a technology demonstrator program for a motorcycle
diesel engine carried out by Cranfield University in the United
Kingdom. Details of this program are reported in SAE Paper 982051.
aim is to produce the best possible power and torque without the
need for turbocharging. To achieve good power, an advanced, thermally
robust, free-breathing four valve cylinder head is used, in combination
with an indirect injection combustion system and intensive development
and tailoring of the fuel injection characteristics. Indirect injection
also gives lower combustion pressures – enabling lighter engine
construction, less ‘diesel knock’ and low particulate
engine is of conventional mechanical design, optimized for this
particular application. Lightweight reciprocating components give
minimum vibration and reliability is assured by good design, high
duty materials and advanced manufacturing techniques.
deliberate decision was taken to use mechanically controlled fuel
injection for the current engine, employing a purpose-designed injection
pump. For the future, electronic control will allow further enhancements
in performance. The engine is capable of operation on either diesel
fuel (mineral and bio-diesel) or aviation kerosene.
result is a simple, compact, lightweight power unit of more than
twice the specific power output of conventional small diesel engines.
usable engine speed range is also much greater than other diesel
engines. Peak power of some 50 hp/litre is developed at around 5800
rev/min, with usable power available up to well over 6000 rev/min.
This is combined with excellent low speed torque in a way which
is unique for a diesel engine. The motorcycle thus has outstanding
drivability with less need for gearchanging, which aids both on-road
enjoyment and cross-country performance in the hands of expert and
less experienced riders alike.
Defense and Aerospace:
HDT started business in 1961. During the 60's and 70's, we specialized
in the development and manufacture of electro-mechanical switches
and relays for defense and aerospace.
also developed unique injection and compression molding equipment
that produced plastic components for the electronics industry.
majority of our business has been with the
U.S. Department of Defense.
were also OEM for major defense companies, including Lockheed, Boeing,
Control Data, and Unisys.
In 1970, HDT expanded into commercial motorcycles sales.
the trade name METTCO, we enjoyed selling and racing PENTON Sport
Cycles. We also developed and produced performance modifications
for both European and Japanese off-road motorcycles.
1976 through 1979, we were consultants to Honda's off-road racing
and enduro teams. We produced suspension components and provided
2-stroke engine performance modifications for their winning efforts
from 1977 through 1979.
In early 1981 the United States Army put forth a Request for Proposal
for the first official production of tactical military motorcycles
since World War II.
was able to combine its experience as a government
contractor with many years of successful off-road motorcycle development
to put together the winning bid.
a result of our proposal, HDT was awarded the first modern military
that first contract, HDT has been awarded more than 45 contracts,
resulting in over 2500 military motorcycles being delivered to the
U.S. and allied military forces.
latest military motorcycle production contract was for 466 modified
Kawasaki KLR650s. Previous contracts had been based on the KLR250.
The move to the bigger, more powerful 650 was seen as somewhat of
a risk for the Marine Corps. However, the risk paid off. The modified
KLR650, now known as the M1030B1 Marine Corps motorcycle has proved
to be the best performing, most reliable tactical military motorcycle
now in service with any military organization. This includes competitive
machines from BMW and KTM.
Fueled Military Motorcycles In 1984 all NATO military forces adopted
a long-term goal of a "single battlefield fuel" to reduce
the logistics burden of supplying gasoline, diesel fuel, aviation
gasoline, and aviation kerosene (jet fuel). The objective was to
convert or replace all existing fueled equipment, including trucks,
tanks, light transport equipment, and aircraft to operate on aviation
implement the single battlefield fuel concept, the U.S. Navy announced
in 1997 that, beginning in the year 2005, they would no longer transport
or supply gasoline in any form. They would only supply "heavy"
fuels, such as, diesel and jet fuel.
that time there were only two major tactical military systems still
using gasoline, small field generator sets and motorcycles. The
military approached both generator set and motorcycle manufacturers
to determine what alternatives might be available. The generator
set manufacturers responded immediately with some diesel fueled
options. However, all the motorcycle manufacturers approached indicated
that a diesel fueled motorcycle was neither commercially practical,
cost effective, or, in some cases even possible given the performance
a last resort, the U.S. Marine Corps requested proposals from all
interested sources, offering to pay for the development of a diesel/jet
fuel powered military motorcycle through the Small Business Innovation
Research Program (SBIR). They received over 40 responses. The Marine
Corps selected two companies for the initial feasibility study,
HDT and a small company in Oklahoma.
reviewing the studies from both companies, HDT was
selected as the sole source for Phase II, which was to actually
produce a total of 15 diesel motorcycles.
successfully completed the first part of Phase II in May of 2001,
when they demonstrated the first motorcycle that used a diesel engine
specifically designed as a motorcycle engine. The motorcycle exceeded
all expectations and was received with great acclaim by both the
news media and potential military customers.
final part of the Phase II effort was completed in September of
2001 when a total of nine diesel motorcycles completed two field
user trials conducted by the Marine Corps.
has entered Phase III of the program and is currently under contract
with the Marine Corps to produce up to 522 JP8/Diesel Combat Motorcycles.
Mr. Hayes has been with HDT since its beginning in 1961 and
has led the Company to be the largest supplier of military motorcycles
to the U.S. Defense Department. Mr. Hayes has over 30 years experience
in all aspects of government contract management and accounting.
He is also HDT's Chief Engineer and responsible for the management
of the R&D and production departments.
Hayes is the Project Manager for the diesel motorcycle program and
is ultimately responsible for all aspects Research & Development
and production design for the diesel engine program.
Hayes is an experienced motorcycle rider and has earned Gold and
Silver Medals in motorcycle competition. His most recent accomplishment
was to ride two of HDT's diesel motorcycles to the first recognized
Land Speed Records for diesel motorcycles at Bonneville, Utah. Mr.
Hayes has also competed successfully in international motorcycle
competition and earned a Platinum Medal (the highest award) at the
2003 UK National Rally. He was a part of a three man team consisting
of Dr. Stuart McGuigan, Mr. John Crocker and Fred Hayes. All were
on HDT's diesel motorcycles.
addition Mr. Hayes was one of the primary consultants to the Motorcycle
Safety Foundation and the U.S. Marine Corps during the development
of the Marine Corps' Military Motorcycle Operator Training Course.
Mr. Hayes still holds credentials as a Military Motorcycle Chief
Dr. McGuigan is an outside Design consultant. He is working
as the Chief Design Engineer and is responsible for the design of
the power unit for the HDT family of high performance diesel engines.
Stuart McGuigan obtained first class honors in mechanical engineering
at Aston University via a student apprenticeship with the Birmingham
Small Arms Group (BSA). Following work for BSA on motorcycle design
and development, he returned to Aston to undertake doctoral research
concerning the flow and bulk handling of fluidized solids and the
design of systems to exploit this technology. He designed the first
rig to yield industrially useful data on fluidized flow. In 1973,
he joined the Royal Military College of Science (RMCS) - now a faculty
of Cranfield University, and was appointed Director of Design in
the Engineering Systems Department in 1997. Since 2003, he has worked
as an independent consultant engineer and is also a director of
his own company, Criterion (Engineers) Ltd, which designs, manufactures
and markets specialist equipment for vehicles, including motorcycles.
He also continues to work for RMCS as a consultant.
has wide-ranging interests in engineering design, including military
and heavy vehicle power packs, weapon systems, inland waterway and
small offshore boats. His work for RMCS is centered on the military
interests, encompassing both teaching and consultancy. He is a major
contributor to the Masters' course in military vehicle technology
and has taught on advanced specialist courses at home and overseas.
has considerable experience in technical risk assessment and design
review work for the Ministry of Defense and defense prime contractors,
playing a major role in assessments on the AS90 self-propelled gun,
Challenger 2 main battle tank and Terrier armored engineer vehicle,
and leading work on the Spearfish naval torpedo and the MRAV/ABSV
armored vehicle family. This work has resulted in major enhancements
in equipment specification, reliability and availability. He has
also undertaken technical risk assessments in the commercial sector.
is still an active designer, concentrating recently on internal
combustion engines and their drivelines, and has established an
international reputation as a consultant in countries including
USA, India, Japan and the UK. Other motorcycle projects include
a range of gearboxes, an electric starter installation and a unit-construction
engine. All this work embraces technical consultancy from concept
design, through detail design and development, to the inception
of full commercial production. Other work has included value engineering
of a complete motorcycle already in volume production, leading to
more than 100 proposals for optimizing cost-effectiveness in manufacture.
M1030M1 JP8/Diesel Military Motorcycle has been under development
since 1998. It is designed to operate reliably and efficiently
on Kerosene based fuels to include Diesel Fuel and Aviation Kerosene.
HDT is under contract with the U.S. Marine Corps to delivery
over 440 M1030M1s. Production will begin in March of 2006.
M1030M1E is a variant of the M1030M1. It is specifically
designed to meet the needs of both the UK and EU NATO countries.
Production of both the M1030M1 and M1030M1E will begin in
March of 2006.
M1030B1 Military Motorcycle at 48 PS, is the most powerful
production tactical military motorcycle ever put into service. The
M1030B1 is currently in service with the U.S. Marine Corps, the
U.S. Army, and the U.S. Air Force.
Diesel fueled D650A1Bulldog
with a world class rolling chassis, the proven performance and durability
of the M1030M1 Military Motorcycle engine, the spectacular patriotic
graphics, and over 102 mpg, the Diesel fueled D650A1Bulldog is a
true "triple threat", winner for sport touring, on/off
road riding, and everyday commuting. Production is scheduled for
March of 2006. HDTUSA will start taking orders October 1,
Addition M1030B1C Commemorative Military Motorcycles. In
celebration of our 20th year supplying the United States Marine
Corps with Combat Motorcycles, HDTUSA is proud to offer 20 Special
Addition M1030B1C Commemorative Military Motorcycles. Only
20 will ever be built. HDTUSA will start taking orders October
- Australia, July 18, 2005
Diesel Power Military Motorcycles
The concept of a diesel motorcycle is not one that has occurred
to a lot of people – at least not many have thought about
it for long because despite a rich century of innovation in motorcycling,
only a handful of diesel motorcycles have existed and until very
recently, they have all been utility vehicles – bikes designed
to get great economy on fuel of questionable quality in rugged and
remote regions and said diesel two-wheelers had no performance pretensions.
Technology - Online Edition, June 7, 2005
Everyone is in favor of small diesel engines for a
variety of SOF applications—is there a solution?
In the aftermath of Operation Desert Storm, military planners tackled
the logistics nightmare of mixed ground, air and sea mobility platforms
and support systems that mandated a numbing array of different fuel
requirements across the battlefield.
News and Star UK - December 15, 2004
WORLD FIRST - A DIESEL MILITARY MOTORBIKE
BRITISH technology has helped produce the world’s first production
diesel military motorbike. The 86 mph bike, already ordered by the
US Marines, may be available for the consumer market in the future.
The bike is the result of a technology partnership between Cranfield
University in Oxfordshire and California-based Hayes Diversified
- November 4, 2004
Military Motorcycle To Hit The Road
A unique technology partnership between
Cranfield University and California-based Hayes Diversified Technologies
(HDT) has created the world's first production diesel military motorbike
and the first bike of any kind with a purpose-designed diesel power
Machine Design - October, 2004
Diesel motorcycle sets speed record
A diesel-powered motorcycle
built by Hayes Diversified Technologies Inc., Hesperia, Calif.,
and faculty from Cranfield University recently set a speed record
for commercial diesel motorcycles. It hit 85.46 mph at sea level
on hard pavement and with production gearing.
Hayes Diversified Technologies (HDTUSA)
- September 13, 2004
Sets Two Land Speed Records for Diesel Motorcycles
at International Speed Trials
The World’s First Purpose-Built Production Diesel Motorcycles
Wins Big at Henry Ford’s Speed Course at Bonneville Speedway
. Hayes Diversified Technologies (HDTUSA), the world’s first
purpose-built production diesel motorcycle engine manufacturer,
set two land speed records at the International Motorcycle Speed
Trials, (www.speedtrialsbybub.com) held at Bonneville, September
Diesel Progress North American Edition
- Sept, 2004
Hayes Diversified Technologies (HDTUSA)
- August 2004
Lightweight vehicles go to war: ATVs,
battery-powered bicycles do their duty in Iraq, Afghanistan
The U.S. military is interested
in lightweight vehicles that can reach places where larger Humvees
and trucks can't go. These include utility vehicles, ATVs, motorcycles
and even battery-powered bicycles. Some ultralight vehicles are
already in use in Iraq and Afghanistan, offering mobility in remote
and rugged locations. Here is a look at some equipment in active
duty and under development by the military.
Creates the World’s First Purpose-Built
Diesel Motorcycle Engine and Receives an Additional $3 Million in
Hayes Diversified Technologies (HDTUSA),
the world’s first production diesel motorcycle engine manufacturer,
announced today that at the specific request of the Marine Corps,
an additional $3 million was added to the current $2.2 million for
the production of the M1030M1 JP8/Diesel Military Motorcycle. The
additional funding is part of the 2005 Defense Appropriations Bill.
Motorcycle News -Weblog, May 27, 2004
Civilian Version of Military KLR DIESEL Motorcycle
There are lots of good reasons to have a powerful motorcycle
that can run diesel for the army, but that equally applies to civilian
applications & use . Obviously, the cost of running a diesel
motorcycle would be lower that a normal one, but more important,
a civilian version of the Military spec Kawasaki KLR 650-M1030M1
would be great for all those adventurer riders, passing through
countries were unleaded fuel is unheard off, and were you'd be lucky
to have diesel fuel available.
Daily Motorcycle News -Weblog, July
Diesel Power Military Motorcycles
always, the armies around the world try to keep their logistics
simple. For their vehicles, this means that they standardize on
one fuel only;- and that's diesel since all trucks and tanks require
diesel. This means they'll only need to carry one fuel in to the
battlefield. However, motorcycles have proven themselves over the
last 100 years in battles, and they don't run diesel.
HDT-RMCS DIESEL MILITARY MOTORCYCLE
For Immediate Release - Diesel
The programme by the Royal Military College of Science [RMCS] and
Hayes Diversified Technologies [HDT] to design and develop a diesel
motorcycle was undertaken to meet the requirement for all NATO armed
forces to operate their entire inventory of powered equipment on
either diesel fuel or aviation kerosene.