reduce RPM at higher speeds - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
VN750 General Discussion

Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums > Technical Forum > VN750 General Discussion > reduce RPM at higher speeds
Reply
Page 1 of 2 1 2
 
LinkBack Thread Tools Display Modes
post #1 of 19 (permalink) Old 08-13-2008, 11:47 AM Thread Starter
 
Join Date: Feb 2008
Posts: 8
iTrader: (0)
 
Smile reduce RPM at higher speeds
750 runs like a dream and especially at 60 to 64 mph. Trying to see how I can best reduce RPM at higher speeds ie. 70 to 78 but allowing the engine not to work so hard 5000 to 5500 rpm.

Alternatives: don't drive so fast, add 6th gear, change gear ration for the 5th gear, get a 1500... Any good ideas would be appreciated.
dixon
[email protected] is offline  
Quote Quick Reply
Sponsored Links
Advertisement
 
post #2 of 19 (permalink) Old 08-13-2008, 12:15 PM
Senior Member
 
Scootergptx's Avatar
 
Join Date: Jul 2008
Location: Grand Prairie, TX
Posts: 802
iTrader: (6)
 
5200 rpm is about 80 mph on my bike. Puts it right near the top of the powerband. Personally that's where I want it to be at that speed. If I need the extra boost, it's there.
Scootergptx is offline  
Quote Quick Reply
post #3 of 19 (permalink) Old 08-13-2008, 04:58 PM
Old Fart
 
Knifemaker's Avatar
 
Join Date: Jun 2004
Location: Catawissa, MO
Posts: 11,679
iTrader: (4)
     
Garage
Quote:
Originally Posted by [email protected] View Post
750 runs like a dream and especially at 60 to 64 mph. Trying to see how I can best reduce RPM at higher speeds ie. 70 to 78 but allowing the engine not to work so hard 5000 to 5500 rpm.

Alternatives: don't drive so fast, add 6th gear, change gear ration for the 5th gear, get a 1500... Any good ideas would be appreciated.
dixon
Learn to live with it. Because of the shaft drive it cost alot of $$$ to change the gearing..internaly too...
The bike is built to run at the speeds it does and it works pretty damn well in my book. It ain't a Harley. If you don't like the engine turning so fast at higher speeds, get a diffrent bike.

KM
If You Are Not Sure If I Am Joking or Not....I AM !!Photos:
http://www.flickr.com/photos/knifemaker1954/sets/
Knifemaker is offline  
Quote Quick Reply
 
post #4 of 19 (permalink) Old 08-13-2008, 05:34 PM
Members who have donated towards server costs
 
Join Date: Sep 2005
Location: Atlanta
Posts: 198
iTrader: (1)
 
This is a common complaint and a 6th gear is on everyone's wish list. Unfortunately, no reasonable solution exists. IMO, the bottom line is that the VN750 is not a great highway bike - but it does the job and it's great around town.
Mark is offline  
Quote Quick Reply
post #5 of 19 (permalink) Old 08-13-2008, 05:56 PM
Members who have donated towards server costs
 
750Doug's Avatar
 
Join Date: Apr 2008
Location: S.E. Michigan
Posts: 2,850
iTrader: (10)
   
I ride my bike everyday. And everyday I habitually kick up one more time looking for sixth. I think the only topic with more threads is the oil issue....
750Doug is offline  
Quote Quick Reply
post #6 of 19 (permalink) Old 08-13-2008, 06:14 PM
Old Fart
 
Knifemaker's Avatar
 
Join Date: Jun 2004
Location: Catawissa, MO
Posts: 11,679
iTrader: (4)
     
Garage
Quote:
Originally Posted by Mark View Post
This is a common complaint and a 6th gear is on everyone's wish list. Unfortunately, no reasonable solution exists. IMO, the bottom line is that the VN750 is not a great highway bike - but it does the job and it's great around town.
That is a rather blanket and silly statement...The Vulcan runs great on the highway..it is just folks that can not get used to the bike running at over 4000 rpms have the problem..it ain't the bike. Ride a Harley at 75 mph over a few hundred miles and you will want your Vulcan back........

KM
If You Are Not Sure If I Am Joking or Not....I AM !!Photos:
http://www.flickr.com/photos/knifemaker1954/sets/
Knifemaker is offline  
Quote Quick Reply
post #7 of 19 (permalink) Old 08-13-2008, 06:28 PM
Members who have donated towards server costs
 
750Doug's Avatar
 
Join Date: Apr 2008
Location: S.E. Michigan
Posts: 2,850
iTrader: (10)
   
FWIW, in the newest motorcycle mag I just read, some new bike, '08 or '09, I can't remember which, but I'll find out and post it; anyway, this new bike only has 5 speeds too, and the bikes coming out now are ride long way bikes, (more or less), so like KM is saying, there is no problem, not with the bike....
750Doug is offline  
Quote Quick Reply
post #8 of 19 (permalink) Old 08-13-2008, 08:25 PM
Senior Member
 
MIKES86VULCAN's Avatar
 
Join Date: Jun 2006
Location: Oahu, HI.
Posts: 114
iTrader: (0)
 
Having a wider rear tire seems to reduce your rpm's. I have the Pirelli (spelled wrong I think) tires. The company states to run the rear at something like 42psi. One day while riding in the rain I lowered my psi to 38 to get more grip on the road and was very surprised to see my rpm's running lower for the same speed. I know others (Dianna) stated that having a 170 on the rear dropped the rpm's by 500. My next rear tire will be a 170 for sure!
Mike B.
MIKES86VULCAN is offline  
Quote Quick Reply
post #9 of 19 (permalink) Old 08-13-2008, 09:05 PM
Old Truck Junkie
 
niterider's Avatar
 
Join Date: Jul 2007
Location: Roby Texas
Posts: 4,130
iTrader: (15)
 
I have from time to time caught myself running in 4th gear and no realizing that I am in that low a gear. Am I the only one that has done that silly thing??
02 honda sabre 1100
niterider is offline  
Quote Quick Reply
post #10 of 19 (permalink) Old 08-13-2008, 09:10 PM
Senior Member
 
dirtrack650's Avatar
 
Join Date: Jul 2007
Location: Castle Rock, Wa
Posts: 1,750
iTrader: (0)
 
Wing riders who pull trailers will switch rear ends with older models (like 1200's will use a 1000 to get better gearing). Wonder if other differentials will work on our vn's? I have a 750 Spectre in parts, if I get some free time, I might give it a try and post results.

DT
95 VN750 (eBay)31k+
GL1100 front fender
OEM engine guard
OEM high back rest
'V-Twin' HWY pegs
Black 750 Spectre handlebars
SunPro Volt Meter (Amazon)
Maier bug shield (JCW)
Bar Ends anti-vibe (JCW)
Emgo air filters
Tank bag-Eclipse
Tail bag-FroZone Cooler
Back Rest-Igloo 6 pak cooler
WalMart Saddle Bags
R/R Relocate
Dry Splines Lubed
AGM DieHard-Sears
Gutted Goat
Sporster XL Mufflers
LED's-stop,tail,turn,marker
Pickup coil mod to .45mm
Silverstar headlight
Rotella T6
dirtrack650 is offline  
Quote Quick Reply
Sponsored Links
Advertisement
 
Reply
Page 1 of 2 1 2


Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

Once registered, your User Name"cannot be changed". We can make exceptions within 7 days, but after that, it is set in stone.

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










« Previous Thread | Next Thread »
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 On
Pingbacks are On
Refbacks are On
 
For the best viewing experience please update your browser to Google Chrome
 
Terms of Use
Copyright
Privacy Policy