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Tractor Pulling Discussion Forum

NATPA RPM chart question - MM

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Mopower

08-03-2007 08:32:52




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Why is a 445 diesel listed? And in it's own catergory! There were less than 250 ever built. No promlem, it just made me laugh. Can't imagine one actually pulling out there. Can't say I ever saw one. Most fell apart in farm use!

May I assume 335 can run 445 gas rpm since a 335 is not listed on the chart?




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Jim Johnson

08-04-2007 05:29:43




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 Re: NATPA RPM chart question - MM in reply to Mopower, 08-03-2007 08:32:52  
The 335 (1600) was 50 RPM'S faster than the 445 (1550) stock so the RPM'S would be that percentage more depending on what Div. you are pulling in.

Jim



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Mopower

08-06-2007 07:43:30




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 Re: NATPA RPM chart question - MM in reply to Jim Johnson, 08-04-2007 05:29:43  
I did a little research and fount that NATPA uses "no load" rpm. 335 is rated @ 1650 and 445 @ 1700. Was just hoping I could tweak just a tad more from my 335 project. The 445 diesel was much higher.



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