Bubba
Nitro Member
Well the NHRA show had a segment on such a machine that Mike Dunn mentioned as a tuning aide.
I recall seeing that as well. IIRC, it was the DSR team using it.
Well the NHRA show had a segment on such a machine that Mike Dunn mentioned as a tuning aide.
The question was what is a profilograph and how is it used? I tried to explain the use of one on a drag strip in order for a grinding company to know where to grind. The same process is used in most states after the pavement is laid to meet whatever specs that state has as to the flatness required for final inspection to be approved. A profilograph isn't used on a race track for the benefit necessarily for the competitors,but for the grinding contractor to enable them to know what area needs to be ground.As far as how crew chiefs adjust to bumps and dips they will have to explain that. I can only discuss the why to profile not how to adapt it to making a good run .
There is a sensor on a wheel for distance and a Satellite G.P.S. sensor in the middle for surface deviation. Tuners can do a lot of clutch, timing and fuel management manipulations with that info.Several weeks ago on a NHRA telecast Mike Dunn etc. talked about a track profile machine that is towed down each lane and produces a graph of the dips and hills in the racing surface.
My question is what team is using or was this an NHRA piece of equipment.
If just a team has this, is the information shared??
seems like a very valuable bit of info for tuning a car.
The machine itself is very simple. A sensor on each of 4 wheels. The frame should have an adjustable wheel base for car type.
Maybe for a lawn mower.