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Estimated H.P. required


 
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C Elliott
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PostPosted: Wed Jan 16, 2013 7:00 am    Post subject: Estimated H.P. required Reply to specific post Reply with quote

I know this all depends on sleigh design and track conditions but I am curious as to what you guys think would be adequate horsepower to pull 6 mph at 5000 lbs with 18.4 x 38 top cut tires. Would 150 hp be enough?

Thanks
 
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bobidan
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PostPosted: Wed Jan 16, 2013 7:52 am    Post subject: Re: Estimated H.P. required Reply to specific post Reply with quote

i would think that would be enough on any track
 
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Mopower
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PostPosted: Wed Jan 16, 2013 8:19 am    Post subject: Re: Estimated H.P. required Reply to specific post Reply with quote

I run 100 horsepower in 5500# at 4&5mph on bigger 16.9X38. It's just a bit weak if you ask me. I place consistently, but it's on a pretty easy going sled with a 5-6ft chain. I'd be happy and back in 3rd gear territory with 125 hp. With 18.4, tough sled, short chain, 5000#, and 6mph, 150 would be quite comfortable.
 
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DAVE Thompson jr
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PostPosted: Wed Jan 16, 2013 10:09 am    Post subject: Re: Estimated H.P. required Reply to specific post Reply with quote

My Farmall is not much over 150 hp and I can run 6mph with full cut 18.4 tires in that weight class. I would think that that would be plenty of power for what you are planning on doing.
 
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Gold Digger
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PostPosted: Wed Jan 16, 2013 5:16 pm    Post subject: Re: Estimated H.P. required Reply to specific post Reply with quote

You must be talking about 4 and 6 cylinders.
I need to see videos of 2cylinders at that weight and speed that will finish in the top 1 or 2 most of the time. Thanks. Stephen
 
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C Elliott
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PostPosted: Wed Jan 16, 2013 5:30 pm    Post subject: Re: Estimated H.P. required Reply to specific post Reply with quote

Continental 4 cylinder, 4.75" bore x 7" stroke. I was told the engine was on a dyno and showed 147 hp after extensive head and manifold work. Engine was built by Lemmons.
 
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brentp4455
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PostPosted: Thu Jan 17, 2013 1:58 pm    Post subject: Re: Estimated H.P. required Reply to specific post Reply with quote

should be big enough. just make sure theres enough carberator for it. thats where a lot of builders seem to fall short. also another .25" of stroke wouldnt hurt.
 
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Mopower
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PostPosted: Thu Jan 17, 2013 4:45 pm    Post subject: Re: Estimated H.P. required Reply to specific post Reply with quote

From what I've seen, head and manifold work are the key to getting those Masseys to run.
 
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