Re: Dan Jesel designs his own 12,000 rpm pushrod engine.
[Re: Spaceman Spiff]
#2611336
01/24/19 12:12 AM
01/24/19 12:12 AM
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Joined: Oct 2007
Posts: 4,212 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,212
New York
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And the big secret is... (wait for it): Ta Da! Raised the cam into the valley. Just like Arias did 30 years ago.
Boffin Emeritus
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Re: Dan Jesel designs his own 12,000 rpm pushrod engine.
[Re: Spaceman Spiff]
#2611338
01/24/19 12:15 AM
01/24/19 12:15 AM
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Joined: Dec 2007
Posts: 12,592 Great Neck,LI,new york
hemi-itis
I Live Here
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I Live Here
Joined: Dec 2007
Posts: 12,592
Great Neck,LI,new york
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And that's N/A,,,,,,,,,,,,,,
HEMI-ITIS has no cure. My condition is fully BLOWN!!
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Re: Dan Jesel designs his own 12,000 rpm pushrod engine.
[Re: Spaceman Spiff]
#2611395
01/24/19 02:05 AM
01/24/19 02:05 AM
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Joined: Oct 2007
Posts: 4,212 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,212
New York
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By the way, for an idea of how "not new" the simple expedient of raising the cam to shorten the pushrods, Parilla made a 175cc "shoulder cam" using this principal in a production bike in 1952. Yes, it's just that simple.
Boffin Emeritus
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Re: Dan Jesel designs his own 12,000 rpm pushrod engine.
[Re: Spaceman Spiff]
#2611428
01/24/19 03:40 AM
01/24/19 03:40 AM
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Joined: Oct 2006
Posts: 1,264 New York, USA
Chargerfan68
pro stock
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pro stock
Joined: Oct 2006
Posts: 1,264
New York, USA
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Interesting that he designed it for ball/cup pushrods instead of the popularity of ball/ball pushrods. I would think that with that much pressure and stress, rocker adjuster would have cup design. Im sure there is way more to it though.
1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.
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Re: Dan Jesel designs his own 12,000 rpm pushrod engine.
[Re: Chargerfan68]
#2611450
01/24/19 06:51 AM
01/24/19 06:51 AM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
master
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master
Joined: Sep 2014
Posts: 4,457
Washington
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Interesting that he designed it for ball/cup pushrods instead of the popularity of ball/ball pushrods. I would think that with that much pressure and stress, rocker adjuster would have cup design. Im sure there is way more to it though. It depends on how accurate the whole system is. There are advantages to the ball/cup system IF you have everything else where it should be, AND you know why you used a ball adjuster and why you set the ball where you did. If there is virtually no pushrod angularity the actual movement of the ball through the lift arc is pretty clean. It is interesting to say the least. Can wait to see it go across the dyno and then into the car.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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