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Discussion Starter #1
Which model of the Burgman is faster? The newer post-07 or the older 03-06 version, or is there much difference at all? My K-05 keeps up with my friends 650, in general, as long as he stays out of the power mode.
:thumbup:
 

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it's not that much to the model, as to the color. The fastest is known to be white
 

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NOPE........!!!!!!!! You are 100% wrong.....!! RED...is the fastest color..
 

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12string said:
I thought Blue was the fastest
Based on MY experience, Blue has it.
 

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Both get up to killing speed just fine. What you do with it once you are there is up to you. ;)

Chris
 

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Assuming that "faster" means acceleration then they are quite evenly matched, with the earlier model having a technical advantage because of its lighter weight.

Here's why.

In looking at the factory service manual specs for the '03 and '07 400s I find the following:

  • the '07 model engine produces 3.2% more torque, 26.8 vs. 23.6 lb-ft;[/*:m:1d2ycgvk]
  • the '07 model overall drive ratio (crankshaft to rear axle) is 13.0:1, vs. the early model's 13.6:1 ratio;[/*:m:1d2ycgvk]
  • the '07 rear tire is 5.47% larger diameter, 21.27" vs. 20.17";[/*:m:1d2ycgvk]
From this data we can calculate the maximum thrust each machines can apply to the ground, as:

[lb-ft at the crank] * [overall drive ratio] / [rear tire radius (in ft)]

or,

for the '07; 26.8 * 13.0 / (21.27 / 2 / 12) = 393.12 pounds thrust;
for the '03; 23.6 * 13.6 / (20.17 / 2 / 12) = 381.91 pounds thrust;

Nonetheless at the bottom line even though the '07's maximum thrust is 2.94% more than the '03; 393.12 vs. 381.91 pounds--the '07 model's curb weight is 7.94% more, 462 vs. 428 pounds.

In a real race rider weight and the CVT torque/ratio curves (which are quite tunable) would be much more significant factors than any inherent difference in either machines' basic design...
 

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cliffyk said:
Assuming that "faster" means acceleration then they are quite evenly matched, with the earlier model having a technical advantage because of its lighter weight.

Here's why.

Snipped
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RED......is still the faster color........!!!!!! AND....I have no idea what you are talking about...!!! :lol: :lol:
 

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Most significant thing is how tight the rider pulls the throttle cable and how many pies he eats.
 

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Ralph M said:
Most significant thing is how tight the rider pulls the throttle cable and how many pies he eats.
and McDonalds! same bike, different pilot, makes a huge difference, same thing if you ride with pillion.
 

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they are all unbelievably fast when you are about to run into something :shock: :twisted:
 

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cliffyk said:
Assuming that "faster" means acceleration then they are quite evenly matched, with the earlier model having a technical advantage because of its lighter weight.

Here's why.

In looking at the factory service manual specs for the '03 and '07 400s I find the following:

  • the '07 model engine produces 3.2% more torque, 26.8 vs. 23.6 lb-ft;[/*:m:2vq7k0fj]
  • the '07 model overall drive ratio (crankshaft to rear axle) is 13.0:1, vs. the early model's 13.6:1 ratio;[/*:m:2vq7k0fj]
  • the '07 rear tire is 5.47% larger diameter, 21.27" vs. 20.17";[/*:m:2vq7k0fj]
From this data we can calculate the maximum thrust each machines can apply to the ground, as:

[lb-ft at the crank] * [overall drive ratio] / [rear tire radius (in ft)]

Hahahahahaha. You must've needed something to do?
or,

for the '07; 26.8 * 13.0 / (21.27 / 2 / 12) = 393.12 pounds thrust;
for the '03; 23.6 * 13.6 / (20.17 / 2 / 12) = 381.91 pounds thrust;

Nonetheless at the bottom line even though the '07's maximum thrust is 2.94% more than the '03; 393.12 vs. 381.91 pounds--the '07 model's curb weight is 7.94% more, 462 vs. 428 pounds.

In a real race rider weight and the CVT torque/ratio curves (which are quite tunable) would be much more significant factors than any inherent difference in either machines' basic design...
 

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Discussion Starter #15
Okay, I was just wanting to know if the K-07 had any advantage over the older versions, guess I will keep my K-05. Thanks cliffyk, for the tech write up :thumbup:
Anyone ever raced the old vs new?
 

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InfernoST said:
mikeyMarine said:
they are all unbelievably fast when you are about to run into something :shock: :twisted:
Hmmmm :roll:
Mikey speaks from experience :? :lol:
 

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Blue is the fastest color 8) but there is much more to it than just specs.
It all depends on how much the rider and their gear weighs and if the roller weights or springs have been changed and other such factors.
I know I can leave a stock '08 behind with my stock '05 because the rider weighs 100 lbs. more than me.
I also know a 2010 Yamaha Majesty with an equally weighted rider can leave me behind as should the newer 400's.
But if you go by just specs the 07 should have more HP and torque thus slightly faster all things being equal.
I know mine has been clocked at over 100mph at Atlanta Motor Speedway Wide Open down off turn 4 with the wind at my back. :thumbup:
...and that's Fats Enough for Me! :wink:
 
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