Converting to a 6 speed
Road Captain
Joined: Mar 2006
Posts: 683
Likes: 3
From: Tallahassee, FL
RE: Converting to a 6 speed
Bryan thanks, that is great info. I have been thinking about doing a 3:37, but I know my RPMs will increase. The SE OD6 would be the missing link for that setup. Just out of curiosity, doesn't it compromise the power transfer when using a 28/37 instead of say a 24/36.....the different gear ratios for 1-5 compensate adequately for the 28/37?
thanks,
gambler
thanks,
gambler
Outstanding HDF Member
Joined: Apr 2007
Posts: 2,046
Likes: 1
From: Canada
RE: Converting to a 6 speed
OK Bryan...
I'm going to add a Procharger and a chain drive kit to my scoot later in the year and figured I might as well upgrade my trans in the 07 FLHX as well. Which trans is going to stand up to the power better and what's the best upgrade for an 07 6 speed from the stock setup? Thanks in advance...G
I'm going to add a Procharger and a chain drive kit to my scoot later in the year and figured I might as well upgrade my trans in the 07 FLHX as well. Which trans is going to stand up to the power better and what's the best upgrade for an 07 6 speed from the stock setup? Thanks in advance...G
Road Captain
Joined: Apr 2007
Posts: 655
Likes: 7
From: Flowery Branch, Ga.
RE: Converting to a 6 speed
EZ yes, expensive yes, I also do a lot of sustained high speed out to the coast riding, went with a Baker 6 speed & love it. I had my HD dealer install.
Banned
Joined: Mar 2006
Posts: 8,603
Likes: 10
RE: Converting to a 6 speed
BAKER .... call em....the only one that will stand power and still be smooth....the OD is slightly stronger but also noisier....the DD will handle the power....if you buy anything else, dont talk to me no more [:-]
Road Captain
Joined: Mar 2008
Posts: 610
Likes: 0
From: Milwaukee, Wi....Land of the Free
RE: Converting to a 6 speed
ORIGINAL: Ultra007
OK, now even I'm confused. Maybe I'm missing something here.
The 2006 and older 5 speeds have a final trans. ratio of 1 to 1 (direct drive)(5th)
The newer 2007 - up are 6 speeds with the final trans. ratio of 1 to 1 (direct drive)(6th)
The newer bikes have changed the primary ratios to allow 6th gear to reduce the engine rpms because the trans. in highest gear are the same.
If I change the primary ratios in my 2007 to increase rpms and get alittle quicker, the other 5 gears are also affected and will rap out sooner, 1st gear is then more of a granny gear and many I've talked to that did this can start off in 2nd gear.
SO, why would it be any different with the Baker direct drive?
From my research, the most efficient way is to go to a overdrive trans. and leave the primary alone. You can spec. the ratios of the first 5 gears to work better in an '07 bike. I would then have 5 speeds at the proper ratios and a true advantage in 6th.
Otherwise its the same as just changing the primary in a HD stock 6 speed.
BUT, ratios not withstanding, a direct drive will generally dyno at higher hp / torque than an overdrive. A direct drive usually has less parasitic loss because it is turning fewer gear sets.
What am I missing here?????
U
OK, now even I'm confused. Maybe I'm missing something here.
The 2006 and older 5 speeds have a final trans. ratio of 1 to 1 (direct drive)(5th)
The newer 2007 - up are 6 speeds with the final trans. ratio of 1 to 1 (direct drive)(6th)
The newer bikes have changed the primary ratios to allow 6th gear to reduce the engine rpms because the trans. in highest gear are the same.
If I change the primary ratios in my 2007 to increase rpms and get alittle quicker, the other 5 gears are also affected and will rap out sooner, 1st gear is then more of a granny gear and many I've talked to that did this can start off in 2nd gear.
SO, why would it be any different with the Baker direct drive?
From my research, the most efficient way is to go to a overdrive trans. and leave the primary alone. You can spec. the ratios of the first 5 gears to work better in an '07 bike. I would then have 5 speeds at the proper ratios and a true advantage in 6th.
Otherwise its the same as just changing the primary in a HD stock 6 speed.
BUT, ratios not withstanding, a direct drive will generally dyno at higher hp / torque than an overdrive. A direct drive usually has less parasitic loss because it is turning fewer gear sets.
What am I missing here?????
U
Outstanding HDF Member
Joined: Apr 2007
Posts: 2,046
Likes: 1
From: Canada
RE: Converting to a 6 speed
ORIGINAL: Bryan TTM
BAKER .... call em....the only one that will stand power and still be smooth....the OD is slightly stronger but also noisier....the DD will handle the power....if you buy anything else, dont talk to me no more [:-]
BAKER .... call em....the only one that will stand power and still be smooth....the OD is slightly stronger but also noisier....the DD will handle the power....if you buy anything else, dont talk to me no more [:-]
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Outstanding HDF Member
Joined: Apr 2007
Posts: 2,046
Likes: 1
From: Canada
RE: Converting to a 6 speed
Bryan,
I spoke with the guys at Baker and they are not going to release a builders kit for my bike until June or July of 2008. The kit is a DD7 and comes ready to swap out into a stock Harley case for the 2007 up FLT models. Guess I'll be waiting a bit but will stay on them.
Thanks for the support there as well bud.
I spoke with the guys at Baker and they are not going to release a builders kit for my bike until June or July of 2008. The kit is a DD7 and comes ready to swap out into a stock Harley case for the 2007 up FLT models. Guess I'll be waiting a bit but will stay on them.
Thanks for the support there as well bud.