Inline Four - Wrist Twisters
 
Thread Tools Display Modes
post #1 of 23 Old 05-28-2009, 07:58 PM Thread Starter
Self proclaimed idiot....
 
Border's Avatar
 
Join Date: Apr 2009
Location: Pacific Northwest
Posts: 765
Rep Power: 1
 
Inline Four

I'm curious to hear the opinion of this forum on a question that has been making me twitch for a while.

Over the past few years, I have seen in motocross a "politically correct" shift towards the 4-stroke platform. Nothing wrong with that if the torque is there, but if it is in the best interest of the rider, no harm, no foul, no top end.....

I have also seen the same change from inline four to twin in MotoGP.. There is no denying the sound of the difference. (And sometimes the performance..)

The same question should resound with the inline four and the street community.. The CBR, R1 , GSX platform for that matter is incredibly successful in it's current skin, but I really have to ask myself how long that will last in the current climate.

Do any of you see the inline four in a major product line three to five years from now?

I don't personally see the demise from a technological standpoint, but more of a "consumer shift" and a bunch of detrimental changes to what I know is a solid and proven platform. It would also be a shame to see the entire Honda sport bike line turn into a twin technology as I have spent many years learning to master the great Honda inline-four way back from the CB750.. Listening and learning to it's annoyance to my lack of aggression in shift points, and to my piss poor corner entry..

I've been watching this transform for a long time and I fear that the perfectly simple inline four is on it's way out.

Any thoughts?

Border is offline  
Sponsored Links
Advertisement
 
post #2 of 23 Old 05-28-2009, 08:03 PM
Chuck Norris has lost in battle with this Member
 
Pacojerte's Avatar
 
Join Date: Aug 2008
Location: ft lauderdale fl
Posts: 12,874
Blog Entries: 1
Rep Power: 1
 

Awards Showcase
Donation Donation 
Total Awards: 2

nahhh... honda quit making the rc51 for a reason... the I4 aint going anywhere..



Pacojerte is offline  
post #3 of 23 Old 05-28-2009, 08:04 PM
I am BATMAN!!!
 
justintyme73's Avatar
 
Join Date: Apr 2006
Location: Ft. Collins CO
Posts: 4,660
Rep Power: 1
 

Awards Showcase
Outstanding Restoration Donation Donation 
Total Awards: 3

If Honda didnt quite making I-4's when their RC51 was king I doubt they will do it now. The only one still having success with the twin is Ducati, even Aprillia has gone v-4. I dont think there is much danger of the I-4's falling too far out of favor with the japanese manuf.'s although I would like to see Honda update the VFR with something sportier, more similar to the 5th gen bike than what is currently sold.

"He was a wise man who invented Beer"--Plato
justintyme73 is offline  
 
post #4 of 23 Old 05-28-2009, 08:08 PM
no max no more
 
Join Date: Mar 2009
Location: boston
Posts: 1,656
Rep Power: 1
 
think its the other way around. V sport bikes where hot for a while now there dropping them;;i think inlines will always rule the track...but them again i been out of the metric loop for a while

dont need a bike to ride the fast lane
secondchance is offline  
post #5 of 23 Old 05-28-2009, 08:10 PM
Bitten
 
bloaker's Avatar
 
Join Date: Jan 2006
Location: Virginia Beach
Posts: 5,451
Blog Entries: 1
Rep Power: 1
 

Awards Showcase
Wrist Twisters Event Attendance Community Leadership Extraordinary Ride Wrist Twisters Event Attendance 
Total Awards: 4

V twins were never king.
V twins recieved a displacement advantage in Racing, hence the lower production numbers on the twin vs I4.
A 1000cc Honda beat a 750cc Suzuki.... ooooooo
When the rules changed... the RC died.

Virginia Beach Remodeling
Spoiler:
Ride In Peace Marcus Randolph (Kahuna) 12/17/06
bloaker is offline  
post #6 of 23 Old 05-28-2009, 08:38 PM
orange
 
sbeau1960's Avatar
 
Join Date: Jun 2007
Location: Indianapolis, IN
Posts: 9,193
Rep Power: 1
 

Awards Showcase
Wrist Twisters Event Attendance Wrist Twisters Event Attendance Donation Community Service 
Total Awards: 6

IMHO, I4's rule!

sbeau1960 is offline  
post #7 of 23 Old 05-29-2009, 02:12 AM
Fool in the Rain
 
HondaJim's Avatar
 
Join Date: Feb 2006
Location: Louisville, Kentucky
Posts: 10,284
Rep Power: 1
 
Garage

Awards Showcase
Donation Wrist Twisters Event Attendance Extraordinary Ride Wrist Twisters Event Attendance 
Total Awards: 4

I want a V5 in an updated VFR.
As far as the question, I don't think the I4 is headed to it's grave just yet. It's still an infant.

"Towards the end of the vid, it looks like she may have had a bafflectomy." - MarylandMike
HondaJim is offline  
post #8 of 23 Old 05-29-2009, 03:02 AM
Tirone
 
cbf900's Avatar
 
Join Date: Nov 2008
Location: Geraldton, Western Australia
Posts: 56
Rep Power: 1
 
it will be interesting to see what happens when honda released it new V4 superbike

cbf900 is offline  
post #9 of 23 Old 05-29-2009, 04:59 AM
Chuck Norris has lost in battle with this Member
 
Pacojerte's Avatar
 
Join Date: Aug 2008
Location: ft lauderdale fl
Posts: 12,874
Blog Entries: 1
Rep Power: 1
 

Awards Showcase
Donation Donation 
Total Awards: 2

Quote:
Originally Posted by HondaJim View Post
I want a V5 in an updated VFR.
As far as the question, I don't think the I4 is headed to it's grave just yet. It's still an infant.
i'm with jim on this one.... v5... ~200 horsies... time to go huntin



Pacojerte is offline  
post #10 of 23 Old 05-29-2009, 05:24 AM
Tribuni Angusticlavii
 
McCrimmon's Avatar
 
Join Date: Nov 2006
Location: Virginia Beach
Posts: 3,726
Blog Entries: 1
Rep Power: 1
 

Awards Showcase
Wrist Twisters Event Attendance Donation Donation 
Total Awards: 3

Twins are unique and loads of fun...but in the end, i4's will be on top


2008 Yamaha FZ1-Street
2005 Honda CBR 600rr-Track
McCrimmon is offline  
post #11 of 23 Old 05-29-2009, 06:23 AM
Legalize it please?
 
BigMike919's Avatar
 
Join Date: Apr 2009
Location: Up State
Posts: 1,176
Rep Power: 1
 
Quote:
Originally Posted by justintyme73 View Post
If Honda didnt quite making I-4's when their RC51 was king I doubt they will do it now. The only one still having success with the twin is Ducati, even Aprillia has gone v-4. I dont think there is much danger of the I-4's falling too far out of favor with the japanese manuf.'s although I would like to see Honda update the VFR with something sportier, more similar to the 5th gen bike than what is currently sold.
I don'tknow how long they have been out for but BMW even has an I4! 1000, and a 1300!

2007 CB900f- sold
2009 K1300s- rockin out
BigMike919 is offline  
post #12 of 23 Old 05-29-2009, 06:47 AM
(Quintus) Pilus Prior
 
sugs's Avatar
 
Join Date: Dec 2006
Location: San Diego, CA
Posts: 2,843
Rep Power: 1
 

Awards Showcase
Donation 
Total Awards: 1

Quote:
Originally Posted by Border View Post
I have also seen the same change from inline four to twin in MotoGP..

Who runs a V-twin in MotoGP? Ducati's GP bike is a V-4.


No, the inline 4 isn't going anywhere for a loooong time.

'02 Honda 919 - She's the only one for me!

sugs is offline  
post #13 of 23 Old 05-29-2009, 07:01 AM
(Quintus) Pilus Prior
 
Lemonhead's Avatar
 
Join Date: Aug 2006
Location: Wisconsin
Posts: 2,613
Rep Power: 1
 
I want a W-8. cuz i'm stooopid.

Lemonhead is offline  
post #14 of 23 Old 05-29-2009, 07:49 AM
Legalize it please?
 
BigMike919's Avatar
 
Join Date: Apr 2009
Location: Up State
Posts: 1,176
Rep Power: 1
 
Quote:
Originally Posted by Lemonhead View Post
I want a W-8. cuz i'm stooopid.
only if it was in a MK2... ahhh the dub days

2007 CB900f- sold
2009 K1300s- rockin out
BigMike919 is offline  
post #15 of 23 Old 05-29-2009, 01:42 PM
Discen
 
05superblackz's Avatar
 
Join Date: Jun 2008
Location: Auburn, AL
Posts: 208
Rep Power: 1
 
How is this for an I4? This is the new Yamaha R1 crankshaft explained.
YouTube - 2009 Yamaha R1 Engine Explained

05superblackz is offline  
post #16 of 23 Old 05-29-2009, 03:37 PM
no max no more
 
Join Date: Mar 2009
Location: boston
Posts: 1,656
Rep Power: 1
 
Quote:
Originally Posted by 05superblackz View Post
How is this for an I4? This is the new Yamaha R1 crankshaft explained.
YouTube - 2009 Yamaha R1 Engine Explained
dont think suzuki is to worried

dont need a bike to ride the fast lane
secondchance is offline  
post #17 of 23 Old 05-29-2009, 05:44 PM Thread Starter
Self proclaimed idiot....
 
Border's Avatar
 
Join Date: Apr 2009
Location: Pacific Northwest
Posts: 765
Rep Power: 1
 
sugs wrote:

Quote:
Who runs a V-twin in MotoGP? Ducati's GP bike is a V-4.


No, the inline 4 isn't going anywhere for a loooong time.
An official "my bad" on that one. The intent was the number of "V" series powerplants as opposed to the trusty I4.

Please pardon my crap linguistics.

And thanks for the heads up. Keeps my ass honest.

Border is offline  
post #18 of 23 Old 05-29-2009, 06:20 PM
Guzzi Man
 
Join Date: May 2009
Location: Towson,MD 21204
Posts: 177
Rep Power: 1
 
There are no twins in the 800 class of moto gp
World superbike has twins but they need 1200cc to compete with 1000cc fours!
Even Ducati uses 4 cyl in gp but theirs is a vee .

mikestib1 is offline  
post #19 of 23 Old 05-29-2009, 06:26 PM
Tirone
 
Join Date: May 2008
Location: austin texas
Posts: 95
Rep Power: 1
 
Inline engines in two, three and four cylinder variants have some major advantages over V twin, V4 or V5's. Inlines are flat out the easiest and cheapest way to make power. Intake and exhaust are much easier to tune and package. Only one cylinder head to cast and machine, one cam drive system, much simpler liquid cooling and lubrication systems . Some ducati V-twin can almost make as much power per liter as a superbike I-4 but at the cost of radical valve timing/lift, very high piston speeds and bearing loads, and most likely shorter life and certainly much greater expense. All that being said, Few things in sound better than a stout running V-twin or V-4. Yamaha has a really interesting idea in the crossplane crank. It has a beautifull V4 sound while keeping all the advantages of the I4.

robert4 is offline  
post #20 of 23 Old 05-29-2009, 06:50 PM
Guzzi Man
 
Join Date: May 2009
Location: Towson,MD 21204
Posts: 177
Rep Power: 1
 
Give me a 1000cc v-5 as Honda produced for motogp before they got too fast and the rest of the world can kiss my a...
I guess it was just Honda just flipped a coin to decide on engine configuration and beat the crap out of the rest of the manufacturers!

mikestib1 is offline  
post #21 of 23 Old 05-29-2009, 06:55 PM
Guzzi Man
 
Join Date: May 2009
Location: Towson,MD 21204
Posts: 177
Rep Power: 1
 
If vtwin ducs could produce as much bhp per liter they wouldn't be allowed extra displacement by the fim and the ama.Ducati needed 1000cc to beat 750 fours and Honda built the RC51 for this reason.Even today it takes a 1125 Buell to beat 600 supersports in what used to be ama racing!

mikestib1 is offline  
post #22 of 23 Old 05-29-2009, 06:58 PM
Guzzi Man
 
Join Date: May 2009
Location: Towson,MD 21204
Posts: 177
Rep Power: 1
 
Vtwin engines power most cruisers so...................you get torque but you need rpm too and 4's will always rev higher than twins because the pistons and rods have less mass.

mikestib1 is offline  
post #23 of 23 Old 05-30-2009, 01:02 AM
 
Join Date: May 2009
Posts: 44
Rep Power: 0
 
yep.. having heared all that I cannot find any logical reason why I4 should be replaces by a V engine. unless they discover a way how to make a V engine better than I4, which I hardly doubt, because it would be simply more complex and expensive. and stuff thats complex is not always better. the principle of Keep It Simple Stupid

vladimer is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Wrist Twisters forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

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
Display Modes
Linear Mode Linear Mode



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 Off
Pingbacks are Off
Refbacks are Off

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