Recent content by DocJancsi

There are 2 specification in these rules regarding width of the car neither of which should cause problems by the width of the block not measuring exactly 1.75” The first is the maximum width. That is not to exceed 2.75” this is not a new measurement and this standard was taken from previous...

Under these rules, any body treatment except for a washer would be legal. In my first draft I specifically included both free and fixed washers as a permitted modification. I received additional guidance from the old guard. There are two errors here in both cases the rules should read minimum...

After four years of racing in the GLFC council races, and experiencing the all too familiar questions regarding interpreting and enforcing the rules, I decided to accept an invitation to provide feedback to the Council after last year's race. As no good deed goes unpunished, I was asked to write...

I should point out that those times are probably not as blazing as you think. The track uses a laser to start the timer. I noted considerable variation in heat times. A lot depends on the design and speed of the cars in each heat. The timer is started by the first part of any car to break the...

Well the results are in! My oldest (in the middle) turned in the following times: Den Races 2.8466 2.8849 2.8473 2.8546 Total 11.4334 Mean 2.85835 Std Dev 0.0180659 My youngest (On the right with the jacket)did very well also: 2.8926 2.8914 2.9097 2.9024 Total 11.5961 Mean 2.899025 Std Dev...

The gap question has always bothered me. I have used a .032 feeler gauge in the past but it disappeared a few years ago and I have not replaced it. If anyone on here has data on proper gaps for graphite and oil it would be great to have. I applied a thin coat of polyester resin around the...

The cars were built using a 4.75” wbheelbase. The Rear axles are 0.625 from the rear and I set the front wheels 1.625 back from the front of the block. In addition to the 14 cubes behind the axle. To bring the car up to weight I placed 8 cubes 0.125 forward of the rear axle. One row of 6 +2...

If it's too aggressive its too late now... the cars are built and turned in. I do not have 3 scales (yet) so I was not able to perform any CoG/CoM calculations. Rough observation put the COM(x) around 5/8"-3/4" forward of the rear axles with CoM(y) aproximately on the centerline. (Rear axles...

Hello all, I have been using this board as a reference for the past several years. I really appreciate the dedication and great information. I have been building derby cars for about 7 years now. Three year ago, I managed to help my nephew build a car that took 2nd in the pack. We went on to...