Menu
Forums
New posts
Search forums
What's new
New posts
New media
New media comments
New profile posts
Latest activity
Media
New media
New comments
Search media
Members
Current visitors
New profile posts
Search profile posts
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Forums
Cattle Boards
Trucks, Tractors & Machinery
Diesel Trucks
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support CattleToday:
Message
<blockquote data-quote="DiamondSCattleCo" data-source="post: 158393" data-attributes="member: 2862"><p>Screwed up and was giving you results from 2 different dyno runs. Engine A develops 1400 lbft @ 2000 RPM (~530 HP). The other numbers are correct. That 1600 lbft number comes from a 648HP truck.</p><p></p><p>Even utilizing F=MA, you still can't accurately judge acceleration (or ET) based on peak HP and weight alone. You absolutely need gear ratios because your force is constantly changing. The howstuffworks website is just fine, but it is too dumbed down to get anywhere near what we need, as it doesn't take into account _any_ acceleration. You'd need to analyze based on delta time, to properly calculate F. This is why Patrick Hale developed the formulae he did, and why it is in use by drag racers and engineers everyday. Its just unfortunate that it doesn't apply to turbo or supercharged engines.</p><p></p><p>So, like I said in an earlier post, you're calling into question my results and the results of others, because you're utilizing the wrong physics formula.</p><p></p><p>Rod</p></blockquote><p></p>
[QUOTE="DiamondSCattleCo, post: 158393, member: 2862"] Screwed up and was giving you results from 2 different dyno runs. Engine A develops 1400 lbft @ 2000 RPM (~530 HP). The other numbers are correct. That 1600 lbft number comes from a 648HP truck. Even utilizing F=MA, you still can't accurately judge acceleration (or ET) based on peak HP and weight alone. You absolutely need gear ratios because your force is constantly changing. The howstuffworks website is just fine, but it is too dumbed down to get anywhere near what we need, as it doesn't take into account _any_ acceleration. You'd need to analyze based on delta time, to properly calculate F. This is why Patrick Hale developed the formulae he did, and why it is in use by drag racers and engineers everyday. Its just unfortunate that it doesn't apply to turbo or supercharged engines. So, like I said in an earlier post, you're calling into question my results and the results of others, because you're utilizing the wrong physics formula. Rod [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Cattle Boards
Trucks, Tractors & Machinery
Diesel Trucks
Top