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Oliver 70 pullers


 
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B.G. ANGELL
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PostPosted: Sun Jan 20, 2013 1:43 pm    Post subject: Oliver 70 pullers Reply to specific post Reply with quote

Going to pull an Oliver 70 next season and I'm aiming for the 2.5- 3.5 mph classes. with a set of 13.6-38" tires what kind of speeds are you guys running and what rpm ? What is the stock rpm for a 70?
 
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B.G. ANGELL
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PostPosted: Sun Jan 20, 2013 1:45 pm    Post subject: Re: Oliver 70 pullers Reply to specific post Reply with quote

Also what is the lightest possible class for a 70?
 
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puln70
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PostPosted: Sun Jan 20, 2013 2:03 pm    Post subject: Re: Oliver 70 pullers Reply to specific post Reply with quote

One a wetter clay track I usually stay in first,if it's looser I've pulled in second & one time on a sandy track I pulled in 3rd.
My motor is bored,ported & ground the head.
I pulled in 3500 antique,it's a 39 w/13.6
I could usually put a weight (100lbs) on the front in the 3500 class,you need to make the rear lighter as the front tires would always pick up towards the end.
To really do any good you'll need to stroke it.
Good Luck
 
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puln70
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PostPosted: Sun Jan 20, 2013 2:16 pm    Post subject: Re: Oliver 70 pullers Reply to specific post Reply with quote

rpm is 1640
 
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Bryce
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PostPosted: Sun Jan 20, 2013 5:42 pm    Post subject: Re: Oliver 70 pullers Reply to specific post Reply with quote

1645 for the 5 gear, 1600 for the 3 gear.lp
 
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puln70
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PostPosted: Tue Jan 22, 2013 4:03 am    Post subject: Re: Oliver 70 pullers Reply to specific post Reply with quote

http://natpa.com/rpm_chart_2001.htm
 
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Bryce
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PostPosted: Tue Jan 22, 2013 7:22 am    Post subject: Re: Oliver 70 pullers Reply to specific post Reply with quote

Try the more accurate oliver manual.natpa has some mistakes through out there charts.
 
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puln70
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PostPosted: Tue Jan 22, 2013 2:49 pm    Post subject: Re: Oliver 70 pullers Reply to specific post Reply with quote

I just figured if your pulling then that's what you might want to go by?
 
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puln70
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PostPosted: Tue Jan 22, 2013 2:49 pm    Post subject: Re: Oliver 70 pullers Reply to specific post Reply with quote

I just figured if your pulling then that's what you might want to go by?
 
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Bryce
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PostPosted: Wed Jan 23, 2013 7:26 am    Post subject: Re: Oliver 70 pullers Reply to specific post Reply with quote

Depends on where you are pulling, Sigourney goes off of the 3 gear rpm.
 
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