| DBF1300 The
        Car  Cornering at 1.5G
        plus at Mt. Cotton Hillclimb in Brisbane, Queensland,
        Australia - the local hill of the MG Car Club.   
 
 History
         1987 through 1989
        saw three friends gathering one night per week and at
        least one day each weekend, to discuss, design and build
        the DBF1300. The three comprised John Davies, the owner
        and driver, together with Denis Backhouse and Ian Fettes.
        The trio are shown from right to left in the photo below.
        All three contributed in numerous ways to the final
        outcome. The car's name derives from their surname
        initial letters and the capacity class in which the car
        runs.   
 The following
        factors were of primary concern to the trio, and many
        hours were spent weighting the pros and cons of each
        before final decisions were made.  
            Use of a
                readily available and strong engine; Light weight,
                but using materials that eased repairs if damaged;
                Excellent
                handling based around the best tyres available
                and low unsprung weight; Minimum cost
                using fabrication rather than purchase of many
                components.  Very few teething
        problems occurred with the constructional aspects of the
        car, and within a couple of years of its inauguration, it
        became a winner. Initial problems were experienced in the
        fuel delivery system, the standard carburetters not being
        up to the cornering forces. With fuel injection fitted
        the problems went away.  The car then
        quickly gained a reputation as a giant killer, for it is
        very competitive outside its class. It has been very
        successful pitted against professionally built 5 litre V8
        open wheel racing/hillclimb cars.  
 Specification
         The technical
        details of the car are as follows:-  
            
                | Engine | Suzuki EFE 1100, fitted with
                big bore kit to yield 1265 cc. Haltech fuel
                injection used with Aviation gasoline. Alternator
                removed to permit free revving of engine to 12,000
                rpm. Suzuki 750R cylinder head fitted and
                compression ratio adjusted to 12:1 with
                appropriate piston style. Crankshaft welded. |  
                | Clutch/Gearbox | Standard Suzuki gearbox with
                strengthened clutch. |  
                | Starter | External electric starter
                used with direct drive to crankshaft. Gear
                reduction starter motor adapted from Toyota Dyna
                truck starter. |  
                | Final Drive | Chain drive from gearbox to
                offset fabricated open differential using gear
                components from Datsun 1600. |  
                | Driveshafts | Adapted
                from Volkswagen Kombi, one full length, one
                shortened. |  
                | Frame | Arc and gas welded space
                frame chassis using normal steel tubing.
                Incorporates rollover protection and strengthened
                drivers compartment. |  
                | Body | Removable home built
                fibreglass/Kevlar body, side panels and engine
                cover. |  
                | Aerodynamics | Home
                built aluminium and fibreglass wings front and
                rear, designed for optimum low speed behaviour. |  
                | Brakes | Rear - inboard motorcyle
                discs. Front - outboard motorcycle discs. Master
                cylinders adapted from Land Rover clutch
                cylinders. |  
                | Wheels | Spun aluminium rims on
                aluminium centres. Front - 13 x 8 inch. Rear - 13
                x 11 inch. |  
                | Tyres | Avon slicks. Front - 13 x 7.2
                inch. Rear 13 x 10 inch. |  
                | Steering | Fabricated
                rack and pinion, one turn lock to lock. |  
                | Suspension | Front -
                independent with inboard rockers. Rear -
                independant outboard. Non-adjustable pivots
                fabricated from Delrin plastic, with Heim and
                spherical joints used elsewhere. No anti-roll
                bars. |  
                | Dampers | Sachs non-adjustable
                gas, carefully selected for balance with spring
                rates |  
                | Hubs | Rear -
                fabricated using Datsun 1600 bearing carrier and
                centres. Front - completely fabricated. |  
                | Race weight | 310 kg (684 lb) excluding
                driver |  
 Construction
        Details  Here are a few
        photos taken during construction of the car  
            
                |   | This is a view showing the
                fabricated front hub assembly. The front mounted
                brake caliper is not visible as it is on the back
                side of the view. |  
                |   | The driver's feet share the
                footwell with the inboard spring damper units in
                this view. The fabricated rack is also shown. |  
                |   | In this rear view, the
                fabricated differential and its carrier are seen,
                together with the brakes and shortened left
                driveshaft. |  
 Results
         In addition to a
        number of successes within its class in local Club
        competition, its results obtaining in major outright open
        competitions have been:-  
            Australian
                Hillclimb Championship 1992 Queensland
                Hillclimb Championship 1993 Queensland
                Hillclimb Championship 1994 Australian
                Hillclimb Championship 1995 Queensland
                Hillclimb Championship 1995  While not the
        first car to use a motorcycle engine in this way, its
        success has certainly engendered a number of similarly
        competitive vehicles.  
 The
        Planned Future  John believes
        strongly in the home-grown approach to motor racing, and
        the hill climbing sport allows freedom in design coupled
        with financial economy. Professional motor racing is just
        that! 
 A number of innovative concepts are presently
        brewing, and the next few years may see another car
        emerge. Watch this space.
 
 
 The
        Actual Future  Despite good intentions,
        John never managed to develop another car, and sadly, he passed away
        in July 2012, followed in August 2013 by friend Denis.
 The DBF was then taken over by Neil Lewis, who made it fully operational again
        and rebuilt the engine with a different ECU yielding a better power
        spread.  A further change was made to modernise the tyres.
 
 These changes allowed Neil to obtain his best time in September 2014 at the Mount Cotton Hillclimb
        of 39.40 seconds, bettering John's best time of 39.50 recorded back in June 1995, some 19 years earlier!
 
 Neil now plans to store the car for historic purposes and bring it out on special occasions.
 
 
            
                |   | This photo from Steve Johns shows Neil in recent action at the Mount Cotton Hillclimb. |  
            
                | Revised
                on 3 December 2014 | Copyright
                © Ian D Fettes 1997, 1998, 2000 |  |