Performance / gearing comparison between EP3 and FN2 - Civinfo
 
LinkBack Thread Tools
post #1 of 12 (permalink) Old 30th January 2007, 20:44 Thread Starter
Administrator
 
Pottsy's Avatar
 
Car: Jag XF 3.0
Join Date: 10th April 2006
Location: Leics ENGLAND
Posts: 12,496
Thanks: 127
Thanked 2,774 Times in 824 Posts
iTrader: (0)
Eco display
Send a message via Skype™ to Pottsy
Performance / gearing comparison between EP3 and FN2

There has been some discussion about the effect of performance and gearing between the outgoing EP3 and incoming FN2. So I've dug out the excellent cartest software and put in a few cars.

Remember, this is theoretical.

Gearing for the 2.2 Diesel:

gear_22.gif


Gearing for the EP3:

gear_ep3.gif


Gearing for the FN2:

gear_fn2.gif


Optimum shift points for the EP3:

opt_ep3.gif


Optimum shift points for the FN2:

opt_fn2.gif



And finally a whole load of numbers for a collection of cars. See how the shorter gearing of the new car gives better in gear times, at the expense of outright acceleration.

compare.gif
Pottsy is offline  
Sponsored Links
Advertisement
 
post #2 of 12 (permalink) Old 30th January 2007, 21:36
Super Moderator
 
TTDegs's Avatar
 
Car: '08 2.2 NHB CRV
Join Date: 4th August 2006
Location: Cardiff WALES
Posts: 7,762
Thanks: 97
Thanked 106 Times in 97 Posts
iTrader: (3)
I like numbers!

especially the 50-90 ones...


Thank you (as ever!) Pottsy
TTDegs is offline  
post #3 of 12 (permalink) Old 31st January 2007, 08:05
 
Join Date: 19th September 2006
Posts: 93
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader: (0)
Civic Type R gearing

Those figures are interesting but what I don't understand is why Honda have not rectified the 6th gear ratio in the new Civic Type R.

The only real flaws in my ATR is that it isn't great on the motorway, for not only does it lack the option of cruise control, but its top gear is 19.5 mph per 1000 revs, so 70 mph is 3600 rpm.

Now, given that the Accord has 5 gears and the new Civic 6, I don't see why they didn't use the 6th gear as a cruising gear. From reviews it seems to be that the 6th is 20 mph per 1000 revs, more or less the same as the Accord.

Yes, I understand low gearing in 1st to 3rd, for acceleration, but I think it would make the Civic a great car for B roads AND motorways had the top gear been used as a cruising gear. My wife's jazz is 23 mph per 1000 revs in top and even that would have been a small improvement.

This may sound like a tiny moan, but it is an easy 'fix' to make and would certainly make the new Civic Type R a more useful motorway companion. (Yes, I appreciate the Type R philosophy is about Racing, not cruising, but still.)

That's my two penneth anyway....!
Accord Type R is offline  
 
post #4 of 12 (permalink) Old 31st January 2007, 09:04 Thread Starter
Administrator
** Thread starter **
 
Pottsy's Avatar
 
Car: Jag XF 3.0
Join Date: 10th April 2006
Location: Leics ENGLAND
Posts: 12,496
Thanks: 127
Thanked 2,774 Times in 824 Posts
iTrader: (0)
Eco display
Send a message via Skype™ to Pottsy
ATR, it is as you say about 20 mph per 1000 rpm. Making it any taller would be good for economy and noise, but you would get less acceleration making motorway driving much more tedious if you had to change down the whole time.

I specifically tested the car at typical motorway speeds to see what it's like, and in fact the sound insulation is very good and the engine silky smooth, so it didn't feel tiring or obtrusive at all.

HTH
Pottsy is offline  
post #5 of 12 (permalink) Old 31st January 2007, 12:34
 
Join Date: 16th August 2006
Posts: 78
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader: (0)
You think they would have stretched the 2nd gear ratio to allow it hit 60 without an extra shift into 3rd.
Tydo is offline  
post #6 of 12 (permalink) Old 31st January 2007, 12:55
 
Join Date: 19th September 2006
Posts: 93
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader: (0)
Quote:
Originally Posted by Tydo View Post
You think they would have stretched the 2nd gear ratio to allow it hit 60 without an extra shift into 3rd.
That too, yes, as my 2nd gear hits about 63/64 on the speedo, which presumably does equal a true 60 mph.

It is a simple thing to do I imagine?
Accord Type R is offline  
post #7 of 12 (permalink) Old 31st January 2007, 13:50 Thread Starter
Administrator
** Thread starter **
 
Pottsy's Avatar
 
Car: Jag XF 3.0
Join Date: 10th April 2006
Location: Leics ENGLAND
Posts: 12,496
Thanks: 127
Thanked 2,774 Times in 824 Posts
iTrader: (0)
Eco display
Send a message via Skype™ to Pottsy
You'd think so, just to get the figures on paper (actually it would need to be 62). But then the practicalities are not that simple, it's the same gearbox as the old car but with a different final drive - and it's possible that they chose this final drive ratio as being the one out of a limited number that gave the best driving experience.
Pottsy is offline  
post #8 of 12 (permalink) Old 31st January 2007, 14:18
 
Join Date: 19th September 2006
Posts: 93
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader: (0)
Quote:
Originally Posted by Pottsy View Post
You'd think so, just to get the figures on paper (actually it would need to be 62). But then the practicalities are not that simple, it's the same gearbox as the old car but with a different final drive - and it's possible that they chose this final drive ratio as being the one out of a limited number that gave the best driving experience.
Hmm, same gearbox and same engine (more or less) in the Civic Type R, so I wonder where Honda's money has been spent?

And why the entry model now costs 17,600!
Accord Type R is offline  
post #9 of 12 (permalink) Old 8th August 2007, 09:07
 
Join Date: 7th August 2007
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader: (0)
I'm new here and also not from england or somewhere near so please don't kill me if I write something stupid...

Where could I see what gear ratios FN2 has? I've been looking all over web and couldn't find them...so mysterious


Thanks in advance
SwellerGibbon3 is offline  
post #10 of 12 (permalink) Old 8th August 2007, 10:28 Thread Starter
Administrator
** Thread starter **
 
Pottsy's Avatar
 
Car: Jag XF 3.0
Join Date: 10th April 2006
Location: Leics ENGLAND
Posts: 12,496
Thanks: 127
Thanked 2,774 Times in 824 Posts
iTrader: (0)
Eco display
Send a message via Skype™ to Pottsy
Pottsy is offline  
post #11 of 12 (permalink) Old 8th August 2007, 10:32
 
Join Date: 7th August 2007
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader: (0)
wow, thanks again!!! Now I can strat calculating
SwellerGibbon3 is offline  
post #12 of 12 (permalink) Old 8th August 2007, 12:15
 
Join Date: 12th July 2007
Posts: 78
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader: (0)
Honda Had to make some gearing changes to be able to give the new type r a wider V-tec range....on the down side more gear changes !
montymole1 is offline  
Reply

  Civinfo > Civic Type R > Type-R

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Civinfo forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Your User Name is the name that appears by all your posts on the forum, and so should not be your email address.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



  LinkBacks (?)
LinkBack to this Thread: https://www.civinfo.com/forum/type-r/3459-performance-gearing-comparison-between-ep3-fn2.html
Posted By For Type Date
Untitled document This thread Refback 30th October 2009 08:38

Similar Threads
Thread Thread Starter Forum Replies Last Post
[HOW TO] Modify the EX HFT for better microphone performance WonkySights This is How To ... (Guides Only) (8G) 100 11th October 2011 21:38
Performance Theoretical performance figures Pottsy Engines and Transmission (8G) 10 20th May 2009 11:34
What Diesel Car performance car of the year..... Morris Minor User Reviews 5 18th June 2007 00:55
Tuning Performance Modifications? ads Engines and Transmission (8G) 7 22nd August 2006 23:39
Performance figures The Great Soprendo General Discussion (8G) 6 2nd August 2006 13:10

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome