Go Back   Horizons Unlimited - The HUBB > Technical, Bike forums > Other Bikes Tech

Other Bikes Tech For Technical Questions on bikes not listed in the other forums. Questions comparing which bike is best etc go in the "Which Bike" forum.
Contact Overland Solutions for all your custom modifications and setup for overland travel.

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 7 Jul 2006
Contributing Member
HUBB regular
 
Join Date: May 2006
Location: ...
Posts: 37
Fuel Efficiency Questions???????

Just thinking of how to squeeze the must out of a Honda XR650R. But, this is not in regards to power; it is in regards to fuel efficiency.

So the question is: What can I do (besides listed below) to get the best mpg/kpl I can out of my bike?

I ride with fuel efficiency in mind.
I keep an eye on tire pressure for this reason as well. (If I have to be on pavement for more than a few miles I air up the tires even if I know I will be letting the pressure back out again)
I have already upgraded carburetors (which is supposed to added a few mpg/kpl).

Do aftermarket exhaust systems help with fuel efficiency or is the stock better? As for aftermarket exhaust systems what do I need to look for to increase fuel efficiency?

Take care and thanks for your thoughts
WIESE
Reply With Quote
  #2  
Old 11 Jul 2006
beddhist's Avatar
Contributing Member
Veteran HUBBer
 
Join Date: Sep 2003
Location: Whangarei, NZ
Posts: 2,227
I think you already have the most important things covered.
Also, keep your engine tuned and your chain well lubricated.

A worn cam chain can also increase fuel consumption, as the valve timing gets retarded. Replace it if your consumption goes up and it's worn.

As engine and exhaust tuning is as much an art as a science I don't think there are guidelines on which system is more efficient than another, plus most people seem to have no interest in the subject. They only want more power and/or sound.

Wide luggage (ali panniers) and flapping clothing also increase consumption.
__________________
Cheers,
Peter.

Europe to NZ 2006-10
Reply With Quote
  #3  
Old 11 Jul 2006
Registered Users
Veteran HUBBer
 
Join Date: Feb 2006
Posts: 1,521
always keep awatchfull eye on you mileage. if it goes down that is always the first measurable thing to warn you that something is either failing, or off test.
Reply With Quote
  #4  
Old 12 Jul 2006
Contributing Member
Veteran HUBBer
 
Join Date: Jul 2002
Location: Sydney, NSW, Australia
Posts: 1,366
Quote:
Originally Posted by wiese
I ride with fuel efficiency in mind.
Yes .. but how?

One way is to stop the throttle from opening by more that say 1/3 of full throttle... it is amazing how much that helps ... your accelleration will be a LOT slower .. but you will see the improvment..
__________________
---
Regards Frank Warner
motorcycles BMW R80 G/S 1981, BMW K11LT 1993, BMW K75 G/S
Reply With Quote
  #5  
Old 20 Jul 2006
Registered Users
Veteran HUBBer
 
Join Date: Jul 2006
Location: the Netherlands
Posts: 138
you could change you final drive ratio to run at the same speed with les rpm
means biger front sprocket 1 maybe 2 tooths

i changed my rear sprocket from 45 to 43
__________________
I’m not afraid to go fast, it’s the crash and burn part that sucks.
Reply With Quote
  #6  
Old 20 Jul 2006
Wheelie's Avatar
Gold Member
Veteran HUBBer
 
Join Date: Oct 2005
Location: Oslo, Norway
Posts: 457
Most after market upgrade parts, including exhaust, are designed to give increase in power, including most aftermarket exhausts. Also, messing with one bit of the engine while forgetting to adjust another (i.e., exhaust, bore, ignition timing, compression, carburation, etc), can give you all sorts of trouble, like running too lean or too rich, having your system sooted, overheating, inefficient fuel consumption, or other problems. Engine tuning should not be taken lightly by a novice as you really need to know what you are doing to be able to improve the characteristics in the way you want.

Aerodynamics have a fairly big impact on duel consumption, more so than weight loads, especially for lighter bikes. Tighter clothing, lower and narrower handlebars for a more tucked in riding position (uncomfortable), a lower seat for even less body exposure (more uncomfortable still), narrower panniers, etc. can make a significant difference... go on a diet, have somebody trim off your head and half your torso, and you would get great mileage...

Increased tyre pressure will also reduce your consumption a bit, as will sticking to the appropriate tyre for whatever surface you are riding on. Using a sand tire on the highway or a street tire on sand should be avoided if you want great mileage... anything that will make your bike roll with less strain will reduce fuel consumption is ofcourse what you will try to achieve .



Rather than spending time and money trying to alter the characteristics of the bike and the way you ride to save fuel, I'd recomend fitting a larger main tank or some sort of auxilary fuel system instead. An inexpensive spare fuel tank/jerry, can be fitted in many different locations on the bike, and can easily be integrated with your main tank using a 12V fuel pump and a switch. Or, if you want to go even cheaper and easier, just use a regular Jerry for those stretches where your original tank will not provide you with enough juice.
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 Registered Users and/or Members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Fuel availability north of Vatnajökull glacier geokobbi Iceland 12 5 May 2008 23:50
640 '04 Adventure Fuel Efficiency Yuri KTM Tech 7 16 Sep 2005 09:53
Urgent help required, XRV750 fuel supply problem Richard (Kiwi) Honda Tech 15 18 Jan 2004 06:13
Fuel affecting Fuel Economy? AJ Travellers' questions that don't fit anywhere else 2 7 Feb 2003 17:18
KM per Liter for XT 600 Z Fuchur Yamaha Tech 4 10 Apr 2002 05:45

 
 
 

NEW! HU 2015 Motorcycle Adventure Travel Calendar is now available! Get your copy now for some terrific travel inspiration!

HUGE, 11.5 x 16.5 inches, beautifully printed in Germany on top quality stock! Photos are the winning images from over 600 entries in the 9th Annual HU Photo Contest!

Horizons Unlimited 2015 Motorcycle Adventure Travel Calendar.

"The calendar is magnificent!"

"I just wanted to say how much I'm loving the new, larger calendar!"

We share the profit with the winning photographers. YOU could be in the HU Calendar too - enter here!

Next HU Eventscalendar

See all events

 

Latvia to Australia, an inspirational 5 month journey full of unexpected adventures!


Renedian Adventures

Renedian Adventures

What others say about HU...

"I just wanted to say thanks for doing this and sharing so much with the rest of us." Dave, USA

"Your website is a mecca of valuable information and the DVD series is informative, entertaining, and inspiring! The new look of the website is very impressive, updated and catchy. Thank you so very much!" Jennifer, Canada

"...Great site. Keep up the good work." Murray and Carmen, Australia

"We just finished a 7 month 22,000+ mile scouting trip from Alaska to the bottom of Chile and I can't tell you how many times we referred to your site for help. From how to adjust your valves, to where to stay in the back country of Peru. Horizons Unlimited was a key player in our success. Motorcycle enthusiasts from around the world are in debt to your services." Alaska Riders

contest pic

10th Annual HU Travellers Photo Contest is on now! This is an opportunity for YOU to show us your best photos and win prizes!

NEW! HU 2014 Adventure Travel T-shirts! are now available in several colors! Be the first kid on your block to have them! New lower prices on synths!

HU 2014 T-shirts now in!

Check out the new Gildan Performance cotton-feel t-shirt - 100% poly, feels like soft cotton!


What turns you on to motorcycle travel?


Global Rescue, WORLDwide evacuation services for EVERYONE

Global Rescue is the premier provider of medical, security and evacuation services worldwide and is the only company that will come to you, wherever you are, and evacuate you to your home hospital of choice. Additionally, Global Rescue places no restrictions on country of citizenship - all nationalities are eligible to sign-up!


New to Horizons Unlimited?

New to motorcycle travelling? New to the HU site? Confused? Too many options? It's really very simple - just 4 easy steps!

Horizons Unlimited was founded in 1997 by Grant and Susan Johnson following their journey around the world on a BMW R80 G/S motorcycle.

Susan and Grant Johnson Read more about Grant & Susan's story

Membership - help keep us going!

Horizons Unlimited is not a big multi-national company, just two people who love motorcycle travel and have grown what started as a hobby in 1997 into a full time job (usually 8-10 hours per day and 7 days a week) and a labour of love. To keep it going and a roof over our heads, we run events (22 this year!); we sell inspirational and informative DVDs; we have a few selected advertisers; and we make a small amount from memberships.

You don't have to be a Member to come to an HU meeting, access the website, the HUBB or to receive the e-zine. What you get for your membership contribution is our sincere gratitude, good karma and knowing that you're helping to keep the motorcycle travel dream alive. Contributing Members and Gold Members do get additional features on the HUBB. Here's a list of all the Member benefits on the HUBB.


Books & DVDs

amazon

All the best travel books and videos listed and often reviewed on HU's famous Books page. Check it out and get great travel books from all over the world.


Motorcycle Express for shipping and insurance!

Motorcycle Express

MC Air Shipping, (uncrated) USA / Canada / Europe and other areas. Be sure to say "Horizons Unlimited" to get your $25 discount on Shipping!
Insurance - see: For foreigners traveling in US and Canada and for Americans and Canadians traveling in other countries, then mail it to MC Express and get your HU $15 discount!




All times are GMT +1. The time now is 21:24.