Cams
Road Captain
Joined: Mar 2009
Posts: 654
Likes: 734
IVC on the 570's is 32 degrees, IVC on the Feuling's is 48 degrees. Massive, massive difference.
Overlap on the 570's is 56 degrees with .228/.220 TDC lifts, overlap on the Feuling's is 26 degrees with .137/.150 TDC lifts. Another massive difference.
Max lift is .570/.570 vs. .505/.515. Another massive difference.
In short, it's apples to oranges. Designed totally differently, to operate within totally different constraints, and achieve totally different goals.
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Road Master
Joined: Jan 2017
Posts: 1,162
Likes: 721
From: Lake Carmel, N.Y.
That's why I asked! I know you guys know more about cams than anyone. My 2007 1200 has a DK Customs air cleaner, a Cobra 2 into 1 exhaust and a Powervision. I wanted to do the Hammer 1275 kit but it's not in the cards. I figured a little headwork and the 570s would give me a little boost in the midrange but my guy was trying to talk me into the Fuelings. From all I have read the 570s seem to be what I need.
Grand HDF Member
Joined: Dec 2012
Posts: 3,782
Likes: 1,202
From: river
That's why I asked! I know you guys know more about cams than anyone. My 2007 1200 has a DK Customs air cleaner, a Cobra 2 into 1 exhaust and a Powervision. I wanted to do the Hammer 1275 kit but it's not in the cards. I figured a little headwork and the 570s would give me a little boost in the midrange but my guy was trying to talk me into the Fuelings. From all I have read the 570s seem to be what I need.
agreed! Im tossing in some HP 560 cams on a bike this winter with a few other goodies to accommodate. Very excited and Ive never been disappointed with a HP product. Their R&D is backed with results, proof and results from customers. Which is the most important part of it. Theyve overcome the obstacles of making proven parts that have been proven by them and customers. Something that is not easily achieved imho. Hence why we dont see much if any fueling cam results for Sportys. Not taking anything away from fueling, there just isnt any info out there. Providing that info and getting it to the public, then have the public back it up isn't an easy operation Im guessing.
Intermediate
Joined: Oct 2016
Posts: 34
Likes: 19
From: Springfield, Ohio
Those two cam grinds are about as different as they can be. Designed for totally different applications.
IVC on the 570's is 32 degrees, IVC on the Feuling's is 48 degrees. Massive, massive difference.
Overlap on the 570's is 56 degrees with .228/.220 TDC lifts, overlap on the Feuling's is 26 degrees with .137/.150 TDC lifts. Another massive difference.
Max lift is .570/.570 vs. .505/.515. Another massive difference.
In short, it's apples to oranges. Designed totally differently, to operate within totally different constraints, and achieve totally different goals.
IVC on the 570's is 32 degrees, IVC on the Feuling's is 48 degrees. Massive, massive difference.
Overlap on the 570's is 56 degrees with .228/.220 TDC lifts, overlap on the Feuling's is 26 degrees with .137/.150 TDC lifts. Another massive difference.
Max lift is .570/.570 vs. .505/.515. Another massive difference.
In short, it's apples to oranges. Designed totally differently, to operate within totally different constraints, and achieve totally different goals.
Thread Starter
|
Road Master
Joined: Jan 2017
Posts: 1,162
Likes: 721
From: Lake Carmel, N.Y.
Like I said, these guys know more about cams and Hammer Performance than almost anyone!
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Road Warrior
Joined: Sep 2017
Posts: 1,609
Likes: 694
From: over the mountain
aswracing is Aaron Wilson from Hammer Performance.
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