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Report ergonomics  and aesthetics

The Baja sae competition originated at university of south Carolina in 1976 under the direction of dr john f Stevens

Objective

It is inter collegiate engineering design competition for undergraduate and graduate engineering students

To stimulate real world engineering design project and their related challenges.

Student must function as a team to design engineer, build, test, promote and compete with vehicle within the limits of the rules.

They must generate financial support for their project and manage their educational priorities.

 

Design

Each team goal to design and build a single seat  ,all terrapins ,sporting vehicle whose structure contain driver.

Vehicle should be a prototype for reliable

Maintainable

Ergonomically

Economical production vehicle

Serves a user market

Vehicle should aspire market leading performance in terms of speed handling  ,ride and ruggedness over rough terrain and off road condition.

Performance measured by success in dynamics events which are described in the baja sae rules and are subjected to events sites weather and course condition

Baja sae series 6 competition

north America  -SAE Kansas

                   SAE Illinois

                    SAE utep

Africa south America AND Asia

Sae brazil

Sae korea

Sae south Africa

 

 

Official language

English , document  submissions, presentation and discussion in English

Are  acceptable at all competitions in the series.

Rules validity

Baja sae rules posted on the sae websites and dated for the calendar year of competitions are the rules in effect for the competitions

 

*(NOTE -rules set dated for other years are invalid)

Participation requirements

Student status

Team members must be enrolled as degree seeking undergraduate students in a college or university

Society membership

Team member must be member of sae  affiliate society

Ata

I MECH E

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Age

At least 18 years at time of EVENT driver license

Team members who drive should have driver license

Insurance

Individual medical and accidental issuance converge is required

Faculty advisor

Each team is expected to have a faculty advisory appointed by university

Faculty advisory – not to design any part neither fabricated nor assembled

Not to participate during technical inspection

 

 

 

 

 

 

 

 

Eligibility vehicle

Vehicle associated documentation must be conceived designed and fabricated by the team members without direct involvement from professional engineers faculty

*(NOTE -Vehicle which have been professionally fabricated may be disqualified from the completion)

(Vehicle fabricated from a kit or published design is ineligible to compete)

 

Technical requirements

Vehicle must have 4 or more wheel not in straight line.

Capable of carrying 1 person  75 inch

Weight 113 kg

Max vehicle dimensions

Width 64 inch  with wheels

108 inch length

All terrain capability

Rough land

Obstruction such as rock

Sand jumps

Logs

Steep inclines

Mud

Shallow water

All above combinations

Any type weather including rain ,snow and ice,

 

Adequate ground clearance and traction

 

Vehicle ergonomic

Accommodate drivers of all sizes

95%male 5 % female

Largest driver must meet the roll cage clearance min clearance and fit in comfortable driving position while wearing entire required driver equipment.

Smallest driver to reach all vehicles

 

 

 

 

 

 

 

 

 

 

 

Required engine

Briggs and Stratton 10 hp

All vehicle use same engine a stock 4 cycle air cooled Briggs and Stratton ohv intake model

*(NOTE -modification not allowed)

(only original replacement parts to be used)

Starterrecoil starter rope may be extended to accommodate driver starting the engine while seated

Alternator-to generate electric energy available charging system include 3 ,10 20 amp system

Engine governor– engine equipped with a governor 3800 rpm or lower max speed

*(NOTE-any attempt to defeat the engine governor so to increase the engine speed is disqualified

 to exceed 3800 rpm governor shielded from debris

Hybrid electrical system are prohibited )

Energy storage devices used for propulsion

Hydraulic accumulators are only type of stored energy device that should be incorporated into the vehicle for propulsion purpose

ITS Allowed compressed gas system to change transmission states but to provide addition car power

 

 

 

Electrical system

2 kill switch

Brake light

Reverse alarm

Reverse light

Battery power source

Battery not leak even at roll over

non recharging batteries- only safety item to power like brake reverse light and alarm

 kill switch type (cockpit ) and external switch

(Outside kill switch Must not be below   <_7 inch from THE top )

 

 

 

 

 

 

 

 

 

 

 

Driver equipment

Helmet neck support collar and goggles

*(Note all drivers must wear a well fitting motocross style helmet with an integrated (one piece composite shell))

Chin /face guard and a rating of Snell m2005 sa 2005 british standard institution bs 6658-85 types a or a/fr .

*(Warning some motocross Hemet have extended chin guards that will n9ot contact the required neck collars when the head is flexed forward ).

(This combination of helmet collar is prohibited)

 

Neck support /collar

All driver wear neck support /collar. The neck support must be full circle 360 degree and sfi 3.3 rated

*(NOTE-horse shoe collars are not allowed)

*(NOTE-the support collar must bear dated lables and show no wear ,cuts chaffing or wear )

 

Clothing

Driver must wear long pants socks shoes , gloves ,and a long sleeved fire resistant upper garments.

Upper garments must have factory label showing SFI RATED

Guards

All rooting parts belts and sprocket that rotate at the rate of the driver must be shielded to prevent injury.

Finger guards

Factory stock guards

 

FASTNERS

IT IS DRIVER RESTRAIN SYSTEM

a) FASTNER CAPTIVE-made of nylon locknuts , catered nuts or safety wired bolts , lock washer ,or thread sealants  do not meet the requirement

b) fastener grade requirements

c) Socket head cap screws

d ) modified fasteners 

 

 

 

 

 

 

 

 

 

 

 

 

cockpit and throttle

a) protect the driver

b) permit easy driver exit in an emergency

 

Throttle controls-mechanical foot throttle controlled only.

Driver exit time is 5 sec after driver is fully seated with all protection

Firewall– it must be between cockpit and the engine and fuel tank apartment

it must be at least 0.020 inch thick

Splash shield for fuel tank

Body panels-made of plastic or fiberglass metal or similar material

Belly pan– minimum thickness 0.020 inch

leg and foot shieldingprevent driver legs and feet from coming in contact or becoming entangled during operation or failure . No gap more than 0.25 inch thick are allowed.

Fire extinguishermounted to rear roll hoop with metal tab at least 0.125 inch thick

 

 

 

 

 

 

 

Driver restraint

A)   head restraint-   must limit rearward motion of the driver  head.  Must be mechanical fastened to vehicle.

              Minimum five strap system required –    at least 5 point system

Lap belt and shoulder belt must be –3 inch wide

Fifth belt worn between legs to prevent the lap belt from riding up along the driver torso

Single metal to metal quick release lever

Material should be nylon or Dacron polyester

Vertical locationno lower than driver shoulders 4 inch

Belt below driver shoulder mount to the cockpit

Lateral spacing7-9 inch apart both end of shoulder

Harness attachment points-shoulder belt looped around the horizontal tube on RRH

             Lap belts – at side view angle it must be at 45 degree angle and 65 degree of horizontal.

Centre line of lap belt at seat bottom should be approx 3 inch forward of bottom of the seat back.

 6 points 7 points

Arm restrain

DRIVER  arm must be  kept within limits of roll cage spaceby use of arm restrain.

It should meet SFI 3.3 rating .

Must connect independently to safety belts.

Worn by driver just below elbow.

Driver must reach to cockpit kill switch and steering wheel but not out side cockpit .

Manufactures are required to ensure they labeled the belts with date of manufacturing.

 

 

 

Dynamics events points

Acceleration –                   75

Hill climb –                          75

Land maneuverability    75

Rock crawl

Suspension                       75

Endurance                      400

Total points –                   1000

 

 

Note – kill switch and dynamic brake test

Inspection stickers

A multi inspection stickers will be issued inspection to each of the three parts of technical inspection in completed

Inspection sticker will be placed on right side of firewall above driver shoulder

 

  • (Note -Self certification checks sheet required)

 

a)     Hill climb event

To measure vehicle ability to transmit excess (climbing)   force to the ground

Relative ability to climb an incline from standing start or pull a designated object

Eg-  vehicle or chain along a flat surface

*(Note – the organizer wil determine the hill height steepness and surface or object to be pulled )

 

B ) Maneuverability event –      60-75 points

To test vehicle handling ability over typical Baja terrain

Course may consist of varity of challenges

egtight turns , pylon maneuvers, ruts and bumps drop offs , sand , rock , gullieslogs and inclines .

 

*(Note each vehicle may make 2 runs for best time)

 

C)    Specialty events

To test vehicle under unique off road condition

Rock crawl, mud blog , suspension

 

D)   Endurance event

To check vehicle ability to operate continuously and at speed over rough terrain containing obstacles in any weather condition

E)     Acceleration event

To measure vehicle come up speed quickly from standings start

Distance covered 30.48 m or 45.72 m flat

(NOTE -No. of attempts 2)

F)     Sale presentation event

Convince the executive to produce the car at 4000 units per year

(NOTE -Max time 10 mins

5 mins  question answer  round

G) Cost event

a)cost report

b)prototype cost

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Rearear

 

 

Rearear eRear Roll Hoop (RRH)

Roll Hoop Overhead Members (RHO)

Front Bracing Members (FBM)

Lateral Cross Member (LC)

Front Lateral Cross Member (FLC)

Secondary members

Lateral Diagonal Bracing (LBD)

Lower Frame Side (LFS)

 

Side Impact Member (SIM)

Fore/Aft Bracing (FAB)

 

 

 

 

 

Roll cage structure

 

 

Driver’s helmet shall be 6 inch from top

Body sides gap 3inch

Roll cage members not straight must not exceed     =<28 inch

Should have angle less than or equal to 30 degree   <=30 degree

 

Primary members

Rear roll hoop (RRH)

Can inclined up to 20 degree or less than 20 degree

Width minimum 29 inch or more from the axis of seat bottom which is above 27 inch

Roll hoop overhead members (rho)

MINIMUM 12 INCH OR MORE THAN 12 INCH

SEAT BOTTOM INTERSECTION WITH 4 INCH RADIUS CIRCLE WHICH TOUCHES THE SEAT BOTTOM AND SEAT BACK.

DIFFRENCE OF 41 INCH FROM SEAT TO TOP LC

MINIMIUM 41 INCH OR MORE THAN 41 INCH

 

 

 

 

Front bracing member (FBM)

ANGLE EQUAL TO 45 DEGREE  OR  LESS THAN 45 DEGREE

Lateral cross member (lC)

made of primary material

Front lateral cross members (fLC)

 

Secondary members

Minimum thickness-          .35 inch
minimum outside diameter –   1 inch

 

Lateral diagonal bracing (LBD)

Must be equal to 5 inch or less than 5 inch from top and bottom

Angle between LDB &RRH minimum 20 degree or greater than 20 degree

LOWER FRAME  SIDE (LFS)

 

SIDE IMPACT MEMBER (SIM)

IT SHOULD BE BETWEEN 8 INCH TO 14 INCH

FORE AFT BRACING (FAB)

EQUAL TO 5 INCH OR LESS THAN 5 INCH

 

 

 

 Radius of steering -15 inch

Seat placed on the USM

Length of USM 35.190 inch

Gap between 2 USM  is 5.435 inch

Base of the seat to be placed on  is –18 (L) x 18 (B)

 

Width left from both the sides left and right after the seat  is placed – 8 inch

 

Inclinations of seat should be equal to RRH inclination given

 

The base of seat support should be 2-3 inch above the USM

Seat. Bottom of the driver is at 14 inch with a

 

The lap belt should be placed at 15 or 14-1\2 inch of the

 

Or u can have 4 inch max down to shoulder height

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5 point belt system

Belts width must be 3 inch wide or more than that

 hg

This is 6 point belt

the belts are made of the textile fibre polyester, and have special monofibres woven laterally into them. They act as small laminated springs and keep the belt strap flat. In this way, the load is distributed better over the entire width of the belt strap. The fittings and tabs are generally made of titanium. After an accident, it must be possible to rescue the driver together with the seat from the car if the emergency services think it necessary.lap straps can be either 50mm or 76mm wide

Lap belt tabs must be 0.090 inch thick

Tab must have minimum .25 inch width from edge  and mounting holes to the outside edge of the tab

 

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fastening point of the belts must be able to withstand a load of 14.7 kilonewtons

 ui

 

 

 

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