General Car Related Discussion. To discuss anything that is related to cars and automotive technology that doesnt naturally fit into another forum catagory.

Drivetrain power loss

Thread Tools
 
Search this Thread
 
Old Oct 23, 2012 | 05:54 AM
  #1  
kiwikermit's Avatar
kiwikermit
Thread Starter
Part of the Furniture
 
Joined: Sep 2006
Posts: 183
Likes: 0
From: New Zealand
Default Drivetrain power loss

Does anyone have an idea as a percentage how much power is lost in a Saph 4x4 through the drivetrain? What about a 2wd?
Reply
Old Oct 23, 2012 | 06:53 AM
  #2  
scoooby slayer's Avatar
scoooby slayer
10K+ Poster!!
15 Year Member
Liked
Loved
Community Favorite
iTrader: (4)
 
Joined: Jun 2006
Posts: 10,212
Likes: 417
From: st neots cambridgeshire
Default

there is no set ammount to be perfectly accurate.
for a dynapack hub dyno my view is add 15 hp for each hub that is connceted to the dynapack so add 30 hp for rwd or fwd or add 60 hp for 4wd which imo is a low correction factor but realistic.

dyno dynamics and dastek add there own formula to get to flywheel anyways.
Reply
Old Oct 23, 2012 | 07:37 AM
  #3  
Rod-Tarry's Avatar
Rod-Tarry
Happily retired
 
Joined: Nov 2006
Posts: 7,707
Likes: 238
From: Hampshire
Default

Forget Scooby Slayers answer its a percentage his theory is in trouble if its a 1948 Ford 8 with 20 bhp . Think its about 15% for rwd not sure on 4x4.
Reply
Old Oct 23, 2012 | 08:14 AM
  #4  
kiwikermit's Avatar
kiwikermit
Thread Starter
Part of the Furniture
 
Joined: Sep 2006
Posts: 183
Likes: 0
From: New Zealand
Default

The percentage was what i had heard. I am curious to know what the approx numbers are for Cossies both 2wd and 4wd. And does it vary much depending on model?
Reply
Old Oct 23, 2012 | 09:52 AM
  #5  
scoooby slayer's Avatar
scoooby slayer
10K+ Poster!!
15 Year Member
Liked
Loved
Community Favorite
iTrader: (4)
 
Joined: Jun 2006
Posts: 10,212
Likes: 417
From: st neots cambridgeshire
Default

Originally Posted by MadRod
Forget Scooby Slayers answer its a percentage his theory is in trouble if its a 1948 Ford 8 with 20 bhp . Think its about 15% for rwd not sure on 4x4.
lol, on a dynapack useing hub figures abbey and mgt use a 70 hp loss for awd, if your useing 15% as rwd then youd have to use at least 20% for 4wd, a 800 hub hp 4wd car doesnt have over 1000 crank hp. there are arguments both ways at each end of the scale that dont tally up, abbey and mgt know what there talking about rodney they have both built succesful track and drag cars.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
mark94
Ford Mondeo Including ST
5
Oct 10, 2023 06:52 PM
phil51
Ford Focus Diesel
1
Oct 2, 2015 01:00 PM
Iain Mac
General Car Related Discussion.
7
Sep 30, 2015 09:39 PM
Fudgey
General Car Related Discussion.
21
Sep 30, 2015 06:19 PM
dojj
General Car Related Discussion.
2
Sep 29, 2015 10:32 PM




All times are GMT. The time now is 08:35 PM.