Go Back   EcoModder Forum > EcoModding > Motorcycles / Scooters
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 02-04-2009, 10:05 PM   #11 (permalink)
Master EcoModder
 
The Atomic Ass's Avatar
 
Join Date: Oct 2008
Location: Mason, OH
Posts: 527

LeSabre - '96 Buick LeSabre Custom
90 day: 23.57 mpg (US)

V-Strom - '06 Suzuki DL650 V-Strom
90 day: 68.74 mpg (US)

Prius - '17 Toyota Prius Two Eco
90 day: 69.03 mpg (US)
Thanks: 11
Thanked 11 Times in 11 Posts
Quote:
Originally Posted by janvos39 View Post
You are right of course on the speed of 20 Mph for full clutch engagement. Therefor I intend to shift to the second gear at approx 40 Mph outside the city.
Are you intending to go with a taller gear for the 1st gear? As in:

Old stock ratio < New 1st gear ratio < New 2nd gear ratio

OR

Old stock ratio = New 1st gear ratio < New 2nd gear ratio

I'm not sure if I read correctly, but it sounds like the former. The latter would actually allow you to get off the line better around town.

I think you might find the former uses MORE fuel in town due to having to rev the partially engaged clutch against the higher gear ratio, and also causes more clutch wear, along with very poor takeoff.

I think having a shiftable ratio for lower RPM's on the highway is a very good idea, if a massive undertaking. Please provide pics if/when you get around to working on it.

__________________

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 02-05-2009, 03:24 PM   #12 (permalink)
EcoModding Apprentice
 
janvos39's Avatar
 
Join Date: Jan 2009
Location: Belgium
Posts: 159

jvsgears - '14 Skoda Octavia
Team m8
90 day: 56 mpg (US)
Thanks: 22
Thanked 38 Times in 28 Posts
Atomic,

My first new gear is actually 5% above std gearing. I expect that with riding solo on the bike (no place for a passenger) and mainly on flat roads this will not present a problem.
Std reduction of gearbox is 6.168. My new first is 5.896. The new second is 4.803.
But probably you calculated that already based on the number of teeth for the various gear wheels mentioned in a earlier post.
regards

Last edited by janvos39; 02-06-2009 at 05:42 PM..
  Reply With Quote
Old 02-06-2009, 05:48 PM   #13 (permalink)
EcoModding Apprentice
 
janvos39's Avatar
 
Join Date: Jan 2009
Location: Belgium
Posts: 159

jvsgears - '14 Skoda Octavia
Team m8
90 day: 56 mpg (US)
Thanks: 22
Thanked 38 Times in 28 Posts




Here the pictures of the gearbox with additional gear
The changing gear mechanism is on the drawingboard. (No hardware is made yet.)
  Reply With Quote
Old 02-06-2009, 05:58 PM   #14 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 19,700

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

ForkenSwift - '92 Geo Metro EV
Last 3: 95.68 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 50.45 mpg (US)
Thanks: 2,146
Thanked 4,932 Times in 2,478 Posts
This is getting more and more impressive.
__________________
Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
Ecodriving test:
Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
Old 02-06-2009, 08:13 PM   #15 (permalink)
EcoModding Apprentice
 
CobraBall's Avatar
 
Join Date: May 2008
Location: North Texas
Posts: 112
Thanks: 0
Thanked 2 Times in 2 Posts
How does it handle in crosswinds?
  Reply With Quote
Old 02-07-2009, 11:29 AM   #16 (permalink)
Master EcoModder
 
The Atomic Ass's Avatar
 
Join Date: Oct 2008
Location: Mason, OH
Posts: 527

LeSabre - '96 Buick LeSabre Custom
90 day: 23.57 mpg (US)

V-Strom - '06 Suzuki DL650 V-Strom
90 day: 68.74 mpg (US)

Prius - '17 Toyota Prius Two Eco
90 day: 69.03 mpg (US)
Thanks: 11
Thanked 11 Times in 11 Posts
Quote:
Originally Posted by janvos39 View Post
Atomic,

My first new gear is actually 5% above std gearing. I expect that with riding solo on the bike (no place for a passenger) and mainly on flat roads this will not present a problem.
Std reduction of gearbox is 6.168. My new first is 5.896. The new second is 4.803.
But probably you calculated that already based on the number of teeth for the various gear wheels mentioned in a earlier post.
regards
Truly flat roads would certainly make it easier. It's hard to find those in my area.

Nice work on the gears, is the gear-changing mechanism going to be on the input or output side?
__________________

  Reply With Quote
Old 02-07-2009, 02:21 PM   #17 (permalink)
EcoModding Apprentice
 
janvos39's Avatar
 
Join Date: Jan 2009
Location: Belgium
Posts: 159

jvsgears - '14 Skoda Octavia
Team m8
90 day: 56 mpg (US)
Thanks: 22
Thanked 38 Times in 28 Posts
Handling in crosswinds is comparable with an unmodified bike. Although when there is a constant crosswind the lean angle of the bike is larger probably due to the larger side surface. You get used to that.
The gear change mechanism will be on the output side. I had to shift the diskbrake some mm to make space for the shift mechanism. Still I have limited space for the shifter.

Last edited by janvos39; 02-07-2009 at 02:27 PM..
  Reply With Quote
Old 04-26-2009, 10:17 AM   #18 (permalink)
EcoModding Apprentice
 
janvos39's Avatar
 
Join Date: Jan 2009
Location: Belgium
Posts: 159

jvsgears - '14 Skoda Octavia
Team m8
90 day: 56 mpg (US)
Thanks: 22
Thanked 38 Times in 28 Posts
It is about time to report some progress on the Suzuki Burgman project.
The project basically is twofold. Improving the aerodynamics of the Burgman and improve the engine characteristics to support good mileage.




The progress on making an additional gear is not fast, but I made some parts for the shifter. On this photo the center bar is shown that engages the two gear ratios. The banana shaped hollow part brings the movement to the outside of the gearbox. A push pull rod has to go in the aluminum housing. A cable connection then will be made to manually change the gear.
I found out in the mean time that the newest Suzuki Burgman 400 has a changed gear ratio. This is about 5% higher than older models of the 400.
So my choice for the lowest gear is now identical to this.


To improve comfort on the early morning rides to work I added covers over the handlebars. To be able to do this I had to mount the screen and the covers to the steering. By doing this I decided to give the screen a smaller angle for possible improvement of the Cd.






The last picture shows the large potential storage capacity.
  Reply With Quote
Old 04-26-2009, 10:41 AM   #19 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 19,700

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

ForkenSwift - '92 Geo Metro EV
Last 3: 95.68 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 50.45 mpg (US)
Thanks: 2,146
Thanked 4,932 Times in 2,478 Posts
Thanks for the update, Janvos. Any new fuel economy reports?
__________________
Latest mods test: 15 mods = 15% MPG improvement: A-B test, 2007 Honda Civic 1.8L, 5-speed
Ecodriving test:
Manual vs. automatic transmission MPG showdown: Nissan Micra 1.6L



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
Old 04-26-2009, 12:03 PM   #20 (permalink)
EcoModding Apprentice
 
janvos39's Avatar
 
Join Date: Jan 2009
Location: Belgium
Posts: 159

jvsgears - '14 Skoda Octavia
Team m8
90 day: 56 mpg (US)
Thanks: 22
Thanked 38 Times in 28 Posts


The graphical representation of the fuel used for the Burgman is put together from the quantities of each tank fill.
Since I dont have a fuel gauge this is the only way to work. I am looking at the average, which is of course also influenced by driving style , traffic conditions and weather.

  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
2006 in review: mods vs. technique. And the winner is... MetroMPG Hypermiling / EcoDriver's Ed 16 12-10-2007 08:46 AM



Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com