PullinPrairieGold
Member
Good job at White Pine.... Go Get-Em at Tunica!!!
LOOKS LIKE FORDS can run legally over 3000 rpms .(quoted from post at 03:47:49 11/22/09) RPM charts are generally a list of the high idle rpm (factory spec.) complied into a table of some sort. The first ones were the reference sheets that came with PTO dyno"s such as the M&W models. I am aware of pulls and groups that have been using them for over 40 years and their use probably goes back even further. Many clubs publish an edited version (adding makes and models that do not appear in the original and removing those for models to new or inappropriate for their group) for use by their members - see the link below for an example. In addition to the factory high idle number, percentage over RPM"s are added for tractors pulling in modified classes. I hope this helps.
http://www.natpa.com/rpm_chart_2007.htm
THEN NOT ALL RUN THE SAME PERCENTAGES . WHATS FAIR ABOUT THAT . THEN AGAIN FAIR IS WHAT YOU TAKE YOURE PRIZE PIG TO.(quoted from post at 13:22:31 11/22/09) Not quite, if you check rule #7 for division 5 (http://www.natpa.com/div5rules.htm) you will see there is a 3000 rpm cap for all tractors.
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