DYNO Numbers for Baggers???
#2971
10-25-2011, 09:30 AM
Elite HDF Member
And if the final drive is a 1:1 as it appears to be per Harley specs, that means 5th AND 6th are now OD gears.
#2972
10-25-2011, 09:40 AM
Club Member
The fallacy of that statement means that the bikes are now quicker with closer spaced ratios (false) and that the Harley only changed the final drive ratio to lower the 6th gear cruising rpm (also false). The modern 6-speed from Harley dropped the rpm in 6th gear vs. 5th. That means it's an overdrive.
And if the final drive is a 1:1 as it appears to be per Harley specs, that means 5th AND 6th are now OD gears.
And if the final drive is a 1:1 as it appears to be per Harley specs, that means 5th AND 6th are now OD gears.
Our bikes are, however, over-geared, that is they have very high overall gearing, especially in 5th and 6th. It has a similar affect to an over-drive, but is not the same thing.
#2973
10-25-2011, 10:38 AM
Cruiser
Join Date: Oct 2011
Location: Keyser, WV
Posts: 164
Likes: 0
Received 0 Likes
on
0 Posts
Sorry, but you are mixing things up. An overdrive is where the output from a trans turns slower than the input. The SE 6-speed, also Baker OD6 are over-drive trans, with a 6th ratio of around .86:1, and direct fifth, or 1:1.
Our bikes are, however, over-geared, that is they have very high overall gearing, especially in 5th and 6th. It has a similar affect to an over-drive, but is not the same thing.
Our bikes are, however, over-geared, that is they have very high overall gearing, especially in 5th and 6th. It has a similar affect to an over-drive, but is not the same thing.
#2974
10-25-2011, 10:46 AM
Yeah, your numbers are OK, but how much did your tuner really try to get them better? He spent 14 minutes from your as received run to your final run and printed it in STD. So he changed your main jet 1 time. Do you have an adjustable ignition? Seams like you migh be able to get some more from it.
#2976
10-25-2011, 03:16 PM
Outstanding HDF Member
Well 2 things. It was was pretty well dialed walking through the door and the best results happened to be the first adjustment made. We did several pulls after making other adjustmens these were the best pulls. Just shows you how good my mechanic is at seat of the pants tuning.
#2977
10-25-2011, 05:06 PM
#2978
10-25-2011, 08:56 PM
Elite HDF Member
Sorry, but you are mixing things up. An overdrive is where the output from a trans turns slower than the input. The SE 6-speed, also Baker OD6 are over-drive trans, with a 6th ratio of around .86:1, and direct fifth, or 1:1.
Our bikes are, however, over-geared, that is they have very high overall gearing, especially in 5th and 6th. It has a similar affect to an over-drive, but is not the same thing.
Our bikes are, however, over-geared, that is they have very high overall gearing, especially in 5th and 6th. It has a similar affect to an over-drive, but is not the same thing.
#2979
10-25-2011, 09:42 PM
Road Master
Join Date: Oct 2005
Location:
Posts: 759
Likes: 0
Received 0 Likes
on
0 Posts
#2980
10-26-2011, 12:34 AM
"An overdrive gear is when the gear ratio is less than one. For example, 1st gear is usually like 4 to 1(4:1). meaning 4 turns in to equal 1 turn out. An overdrive gear would be like .5 to 1(.5:1) meaning half a turn in to equal 1 turn out.
So, if you have a 5-spd with gear ratio of 5:1(1st gear), 4:1(2nd gear), 3:1(3rd), 2:1(4th), 1:1(5th gear) it would not be consider an overdrive transmission because the final gear is 1:1
if you have a 5-spd with gear ratio of 5:1(1st gear), 4:1(2nd gear), 3:1(3rd), 2:1(4th), .85:1(5th gear) it would be consider an overdrive transmission because the final gear is .85:1, Overdrive"
this link helped me understand it as well http://www.motorcyclepartsandaccesso...ves/2010/07/07
anyway, google is your friend
Last edited by davewear; 10-26-2011 at 01:08 AM.