LAMBRETTA SPEED RECORD ATTEMPT PASSES ITS FIRST TEST
The SRP Racetech streamliner attempted its first proper run out at Elvington airfield in Yorkshire on June 19. The team, led by Paul Baker and Stuart Day, were there to give the machine a shakedown test and check performance. This was the first time the streamliner had made a full one mile run, with the intention of checking all of the systems, so if any problems arose they could be ironed out before a serious attempt is made.
The weather on the day was fine with no heavy crosswinds which might seriously affect the handling. The first run was rather timid in its approach at a moderate 61.3mph but it must be remembered that the engine can’t be run in on the road, only out on the track. With everything looking fine the throttle was opened up slightly more for the second run which achieved 83.6mph. It soon became apparent that the engine was running way to rich as it wouldn't pull in fourth gear or get into the power band. Unfortunately, someone forgot (no names mentioned) to pack the full set of jets to clean the carburetion up.
Nevertheless with what was available to hand it allowed the engine to rev out more on the third and final run of the day. With a recorded speed of 107.5mph, this was a real statement of the potential this machine has. Stuart Day said: “It did this speed at 7600rpm in top gear so it has plenty more to go.” Though the gearing is being kept secret at the moment, it must be presumed that it will rev out past 10,000rpm so those of you who are technically minded can work out the potential top speed.
One of the most important tests was the handling and whether it would actually ride in a straight line. There were no reports of any problems or speed wobbles, which can happen when running with a full front fairing. Though there were one or two small issues such as the jetting, overall the team were very happy with how everything performed.
As mentioned in the previous report preparing and testing a machine for a top speed record attempt is a very laborious and long one. Not only does it have to be designed and built but then tested before everything is right to make the attempt. That’s why others in the past have failed but thankfully this team are taking the correct approach to achieve their goal. Further runs are planned for later in the year. We will keep you informed of progress and be there when the proper attempt takes place.