Saturday, July 22, 2017

RG500 hill climb cars

This time some pics of 2 RG500 hill climb cars a Jedi and a Nero, the Nero is the one in the pic. Some information about the Nero. The Nero PF1 is a single seater race car designed and built in 1992 for use in Formula 500 circuit racing, 500 cc class speed hill climbs and sprints. The mild steel space frame chassis has aluminium sheet riveted in place for added stiffness, and can take a wide variety of motorbike engines up to 1200 cc. The Suzuki RG500 Gamma engine is a unique water-cooled 4 cyl square configuration including use of power valves. This specific engine was selected because of its high power (over 100 bhp), low weight and low centre of gravity. In this particular example the drive is transmitted by chain to a modified Mini differential. Numerous Mini parts have been utilised to ensure ready availability of spares and low cost repairs (if ever required). Mini 10" solid disc brakes are fitted all round, including inboard on the rear. On a technical note the suspension (in board all round), has been designed so that bump stiffness is completely separate from roll stiffness. This provides excellent road holding and is another unique design choice.  
For more pics see
RG500 hill climb cars

Monday, June 12, 2017

Restoring Barry Sheene's 1976 Suzuki RG500

Here we have some very nice vids of the restoration of one of Barry Sheene's old RG500's the 1976 XR14 bike.
Part one
Part two

Saturday, June 3, 2017

Yamsel V4 500

This very special bike was built in 1974/75 by Geoff Sherwill and Lyell Williamson. Using 2 Yamaha TZ250 engines welded together and fitted into a 1971 Seeley frame. The original idea was conceived by Brian Thompson to create a wide angle V4, by using 2 Yamaha TR2 350 engines with carbs facing forward in the V. With limited budget and plenty ideas, Geoff and Lyell decided to build a R&D bike. Geoff undertook all the machine work and creating a jig/plate assembly, the case was welded together with both crank pinions driving direct to the clutch hub primary gear. This set up created extra long and angled inlet manifold tracts which wasn't ideal. To solve this problem Geoff was planning the inclusion of custom cast wide angle crankcases for the final engine. The first outings showed the engine to be reliable and only minor issues with cooling and ignition were evident. With Lyell riding the bike for 3 years and with ongoing modifications race results were several placings together with some top ten finishes. It was last raced in 1979.

Specificatons
Chassis: 1971 Seeley
Forks: Yamaha RD350
Yokes: By Geoff
Swing Arm: By Geoff, using yacht mast, no square or rectangle extrusion available back then
Wheels: By Peter Allen & Jack McDonald, cast at Commonwealth Aircraft Corporation
Tank: By a friend of Bill Horsman
Exhausts: By Lyell
Paint: By Border Signs 
For more pics see
Yamsel V4 500

Thursday, May 18, 2017

Yamaha F1 RD500

Here we have some nice information and pics about the Yamaha F1 RD500. Just as with the RG500 several people tried to make an F1 racer of the Yamaha RD500. The Yamaha never reached the success of the RG500.
For more pics see
Yamaha F1 RD500

Saturday, April 22, 2017

Mark Philips and the F1 RG500

I found a great article on the Interweb about Mark Philips and the Suzuki F1 RG500 Gamma.
For more information see
Mark Philips and the F1 RG500

Saturday, April 8, 2017

Golinelli RG500

Updated my Golinelli RG500 photo set with some new pics. Diego Golinelli is the man behind the beautiful Aprilia RSW250 frames, he also made some trick frames for the Suzuki RG500 Gamma.
For more pics see
Golinelli RG500

Friday, March 10, 2017

RG500 sidecar racer part 2

Got some new pics of another RG500 sidecar racer. Thank you very much John!
For more pics see 
RG500 sidecars

Saturday, February 18, 2017

Paton 500, 1995

Here we have some very nice and detailled pics of the Paton 500 from 1995, this bike was ridden by Jean-Pierre Jeandat. (Photo's by TechGP)
For more pics see
Paton 500, 1995

Sunday, February 5, 2017

MBA 125 twin

I made a photo set of one of the nicest 125 bikes ever built, the MBA 125 twin. The little engine is a work of art!
For more pics see
MBA 125

Sunday, January 15, 2017

Home made RGV500

Here is the extraordinary story of Nigel Duff's home made RGV500 race bike. Thinking of men like John Britten, Kim Newcombe and Burt Munro it seems that New Zealanders are a special breed of people to make bikes like this!
All the information below comes from Nigel, many thanks for that!
"For about 4 years, from 1986 I raced the RG500 Gamma in Formula One in New Zealand. The final form was as follows, 17 inch Marvics, 5.5"rear 3.5" front, Koni rear shock out of an Indy car, Forcella Italia upside down forks, 36mm Mikuni's, Mercedes 190E radiator, Dyson close ratio gearbox, Mk9 RGB dry clutch, Honda RC30 body work, 138kg, not sure of horsepower but faster than an Mk8 RGB that was out here in 1990, ¼ mile in 10.9seconds 132mph in fourth gear still setup for roadracing managed to beat the then current NZ champion on a 1990 Suzuki GSXR1100.  Stopped racing for a while, basically because I got sick of tipping off the thing, plucking the carbs off and filling the engine up with dirt.
So I decided to build a V4 500 and put the carbs in the center of the Vee where they belong. That required a new frame swing arm etc. and so I built this thing. Frame and swingarm is made from 6061 aluminium bulkheaded and gusseted monocoque a copy of the 1998 Suzuki RGV500, frame is 2mm thick, swingarm is 2.5mm. Swingarm is heat treated to t6 but frame is not done yet as I still may have to weld coil mounts etc to it. I cast up a new crankcase to carry the 1990 YZ125 barrels in a 90 degree Vee with YZ heads and pistons (nice single thin ring pistons). I have made cranks from a TZ250H and have made the gears so that the cranks fit together as they used to and run on the RG500 layshaft. A late model RS 250 ignition sits on the layshaft. Gearbox is still the Dyson model. I had a heap of trouble with the standard Suzuki gearbox when I started racing and the Dyson unit was a lot of money at the time, but it was worth every penny. Never jumped out of gear in two seasons. I have replaced the two gears involved in second gear because it looked worn but it never gave any bother. New gear set has not been used. Dry clutch uses factory outer basket and fiber plates , I machined the standard inner basket and steel plates to fit. Never had a slipping clutch after full power launches. I knew a man who worked for Ohlins, so have a pair of 42mm customer 250GP forks fitted and a rear shock that once graced Doug Chandlers Cagiva. Front brakes are 320mm Brembo rotors with Goldline calipers. Rear is a small Brembo off a mates TZ250, both master cylinders are Brembo, carbs are 35mm oval bored flat slide Dellortos. The pipes I have made myself to patterns designed with the help of the software of Gordon Blair from the Queens University of Belfast (QUB) and I challenge you to find better pipes. One of the bottom pipes took me 32 hours. QUB software has this thing at 140 hp with a relatively conservative bmep."  
For more pics see
Suzuki RGV500

Monday, January 2, 2017

Formula 500 RG500

Two Formula 500 RG500´s racing, boy oh boy what a sound!! Formula 500 RG500's racing