I've taken a personal interest in this topic as I have come to dislike the HD Cruise Drive more and more as time goes by. The ratios suck. First gear is way too tall and fifth is too short. Sixth gear is perfect for highway riding and is the only good thing about the tranny.
Here are some comparisons.
Gear - | Harley 5 - | Cruise Drive - | Baker DD6 |
1st | 10.21 | 9.32 | 10.52 |
2nd | 6.96 | 6.45 | 7.14 |
3rd | 5.04 | 4.80 | 5.22 |
4th | 3.87 | 3.88 | 4.02 |
5th | 3.15 | 3.29 | 3.21 |
6th | N/A | 2.79 | 2.79 |
Dropping the first gear ratio down will do wonders for hole shot, especially when pulling a trailer. Not that racing is in order, but a better performing first is needed on this heavy bike.
In short, the Baker DD6 has the ratios I'm looking for, but it just won't work with the 07 bikes. Baker claims that they will have an offering to fit the 2007+ models, but it is a long way off. I was told at least 1 months out.
Does anyone else make a 6-Spd to fit the Cruise Drive case?
I've attached a simple spreadsheet I made up to calculate speeds in the different gears at a set RPM.
