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  Topic Review (Newest First)
Nov 9th, 2014 11:06 am
GaryEm
Re: 3.36 Final Drive Gear w/Video

I thought I would say I was one those guys that sent my final drive Daves way he went thorugh it the final did have a leaking seal on it so I figured I might as well have it gone thorough just one those maintenance things
But now I am good to go for a nother 100,000 miles for the final drive anyway
Nov 9th, 2014 7:24 am
saddleman
Re: 3.36 Final Drive Gear w/Video

Quote:
Originally Posted by stevea2980 View Post
Thanks and I guess I would have to find a video on that gear change.

2.91 still is a big change from stock. Next time your in the mountains take a video and I will make some more popcorn! LOL

I guess the final question is are you happy with the 2.91's?

Thanks Again

Later Steve
I'm not changing the gears each time I have complete final drives set up with different gear ratios. I went from the 3.36 to the 2.91 this time so it doesn't seem as good. I'm sure if I put my 2.62 drive back in for a few days & then put the 2.91 in I would like it better.
Nov 8th, 2014 10:28 pm
stevea2980
Re: 3.36 Final Drive Gear w/Video

Quote:
Originally Posted by saddleman View Post
I think the 3.20 gears might just as weak as the 3.36 gears. I have a 2.91 gear ratio in it right now & those gears are the same size as the LT gears. My different final drive gear ratios that I have are complete & I just put them in a box still filled with gear oil until I'm ready to use them again. It's less than 30 minutes to swap them out.
Thanks and I guess I would have to find a video on that gear change.

2.91 still is a big change from stock. Next time your in the mountains take a video and I will make some more popcorn! LOL

I guess the final question is are you happy with the 2.91's?

Thanks Again

Later Steve
Nov 8th, 2014 6:33 pm
saddleman
Re: 3.36 Final Drive Gear w/Video

Quote:
Originally Posted by stevea2980 View Post
Thanks Saddleman:

It sounds like you change out your rear drive depending on trip specifics? Personally I am not set up in my garage to get into those kind of "Spontaneous" changes. If I make a change it will be permanent. Weaker gears doesn't sound too good considering how we all have to worry about rear drive failures anyway. I am in Seattle and limped home from Norcal with a impending drive failure. I was very lucky. 1- I made it home, 2- I was out of warranty but Ridewest covered it anyway!!!. The 3.20 gears might be the way to go me thinks!

Thanks again for your help :-)

Later Steve A
I think the 3.20 gears might just as weak as the 3.36 gears. I have a 2.91 gear ratio in it right now & those gears are the same size as the LT gears. My different final drive gear ratios that I have are complete & I just put them in a box still filled with gear oil until I'm ready to use them again. It's less than 30 minutes to swap them out.
Nov 8th, 2014 4:48 pm
stevea2980
Re: 3.36 Final Drive Gear w/Video

Quote:
Originally Posted by saddleman View Post
The 3.36 gears are for a R850R and the length of each tooth is shorter and weaker than the LT gears.

I have been to 115 mph on the gps in 5th gear and it wasn't at red line yet.

The ring & pinion gear set cost $660 from BMW Germany.

I will keep this final drive on the self unless I'm riding in the mountains. I think a 3.20 gear from a R850RT would be better because I was shifting to often with the 3.36 gear.
Thanks Saddleman:

It sounds like you change out your rear drive depending on trip specifics? Personally I am not set up in my garage to get into those kind of "Spontaneous" changes. If I make a change it will be permanent. Weaker gears doesn't sound too good considering how we all have to worry about rear drive failures anyway. I am in Seattle and limped home from Norcal with a impending drive failure. I was very lucky. 1- I made it home, 2- I was out of warranty but Ridewest covered it anyway!!!. The 3.20 gears might be the way to go me thinks!

Thanks again for your help :-)

Later Steve A
Nov 8th, 2014 4:30 pm
saddleman
Re: 3.36 Final Drive Gear w/Video

Quote:
Originally Posted by stevea2980 View Post
Hey Saddleman:

I have been riding my 99 LT like that for 13+ years. Not all the time though but when I do the temps do get almost to the caution area. Note that I have the Chip / Exhaust mod. Actually the noise is starting to get to me but I am a lot older now LOL.

The ratio change looks interesting. Can you provide more details like, 1- Are the gears more reliable (You know what I mean!) 2- What is your top speed now, On long trips out west I cruise at 90 all the time and I think that is about at 5000 rpm but will have to go check that out again, What is your rpm @90 :-) 3- How much did you spend on parts and where were they purchased. 4- Any other special items of interest we should know about this change?

Also after riding on the 3.36 for a while would you consider a different ratio somewhere between the stock and 3.36?
Thanks Steve A
The 3.36 gears are for a R850R and the length of each tooth is shorter and weaker than the LT gears.

I have been to 115 mph on the gps in 5th gear and it wasn't at red line yet.

The ring & pinion gear set cost $660 from BMW Germany.

I will keep this final drive on the self unless I'm riding in the mountains. I think a 3.20 gear from a R850RT would be better because I was shifting to often with the 3.36 gear.
Nov 8th, 2014 3:12 pm
stevea2980
Re: 3.36 Final Drive Gear w/Video

Quote:
Originally Posted by saddleman View Post
BMW K1200LT w/3.36 final drive - mountain ride - YouTube Look at the temp gauge it was in the 50's F and I couldn't ride like this in the heat of the summer. I'll need to get more air through the radiators. The video always looks slow so the dash cam gives you an idea of the speed.

Hey Saddleman:

I have been riding my 99 LT like that for 13+ years. Not all the time though but when I do the temps do get almost to the caution area. Note that I have the Chip / Exhaust mod. Actually the noise is starting to get to me but I am a lot older now LOL.

The ratio change looks interesting. Can you provide more details like, 1- Are the gears more reliable (You know what I mean!) 2- What is your top speed now, On long trips out west I cruise at 90 all the time and I think that is about at 5000 rpm but will have to go check that out again, What is your rpm @90 :-) 3- How much did you spend on parts and where were they purchased. 4- Any other special items of interest we should know about this change?

Also after riding on the 3.36 for a while would you consider a different ratio somewhere between the stock and 3.36?
Thanks Steve A
Nov 8th, 2014 8:21 am
Fun Bobby
Re: 3.36 Final Drive Gear w/Video

Quote:
Originally Posted by smahon View Post
And why not? At this RPM level, the LT will make Fun Bobby much more fun, esp when riding with Harleys!
The only time I'll ever see or hear 7000 RPMs is down a straight Florida road. Fun Bobby would be "Wrapped around a tree Bobby" if I attempted Saddleman's mountain ride.

Rob, 2000LT
Navarre, FL
Nov 7th, 2014 8:51 pm
dshealey
Re: 3.36 Final Drive Gear w/Video

Quote:
Originally Posted by jzeiler View Post
David it was just a shutter effect on the GoPro that made the Clearwater Lights "look" like they were flashing. The eye cannot see that.
Oh. I missed that.
Nov 7th, 2014 8:39 pm
jzeiler
Re: 3.36 Final Drive Gear w/Video

David it was just a shutter effect on the GoPro that made the Clearwater Lights "look" like they were flashing. The eye cannot see that.
Nov 7th, 2014 5:47 pm
saddleman
Re: 3.36 Final Drive Gear w/Video

The only time you can see the flashing lights is in a video. To the naked eye the LED's don't flash.
Nov 7th, 2014 5:29 pm
dshealey
Re: 3.36 Final Drive Gear w/Video

Quote:
Originally Posted by Buff8stuff View Post
Federal law allows for "modulating" white lights on the front of motorcycles for safety. Some companies have pushed this a bit with the flashing LEDs. I have some that were marketed as "modulating", but they definitely flash, so I haven't mounted them. I want to hear from a Judge that they would be allowed first.---------------------------.
Modulation is allowed for HEADLIGHTS (either low or high beam, not both. Modulation is strictly defined in the federal documents, and cannot FLASH on and off. They can only be modulated from full on to a reduced level, never full off. The modulation rate is also specified, and must be withing certain limits.

Those flashing lights on your friend's bike are absolutely illegal, and could net him a big ticket!

Here is the section of the federal regulations regarding motorcycle headlight modulation:
----------------------------------
S7.9.4 Motorcycle headlamp modulation system.
S7.9.4.1 A headlamp on a motorcycle may be wired to modulate either
the upper beam or the lower beam from its maximum intensity to a lesser
intensity, provided that:
(a) The rate of modulation shall be 240 <plus-minus> 40 cycles per
minute.
(b) The headlamp shall be operated at maximum power for 50 to 70
percent of each cycle.
(c) The lowest intensity at any test point shall be not less than 17
percent of the maximum intensity measured at the same point.
(d) The modulator switch shall be wired in the power lead of the
beam filament being modulated and not in the ground side of the circuit.
(e) Means shall be provided so that both the lower beam and upper
beam remain operable in the event of a modulator failure.
(f) The system shall include a sensor mounted with the axis of its
sensing element perpendicular to a horizontal plane. Headlamp modulation
shall cease whenever the level of light emitted by a tungsten filament
light operating at 3000 deg. Kelvin is either less than 270 lux (25
foot-candles) of direct light for upward pointing sensors or less than
60 lux (5.6 foot-candles) of reflected light for downward pointing
sensors. The light is measured by a silicon cell type light meter that
is located at the sensor and pointing in the same direction as the
sensor. A Kodak Gray Card (Kodak R-27) is placed at ground level to
simulate the road surface in testing downward pointing sensors.
(g) When tested in accordance with the test profile shown in Figure
9, the voltage drop across the modulator when the lamp is on at all test
conditions for 12 volt systems and 6 volt systems shall not be greater
than .45 volt.
The modulator shall meet all the provisions of the standard after
completion of the test profile shown in Figure 9.
(h) Means shall be provided so that both the lower and upper beam
function at design voltage when the headlamp control switch is in either
the lower or upper beam position when the modulator is off.
S7.9.4.2(a) Each motorcycle headlamp modulator not intended as
original equipment, or its container, shall be labeled with the maximum
wattage, and the minimum wattage appropriate for its use. Additionally,
each such modulator shall comply with S7.9.4.1 (a) through (g) when
connected to a headlamp of the maximum rated power and a headlamp of the
minimum rated power, and shall provide means so that the modulated beam
functions at design voltage when the modulator is off.
(b) Instructions, with a diagram, shall be provided for mounting the
light sensor including location on the motorcycle, distance above the
road surface, and orientation with respect to the light.
Nov 7th, 2014 3:55 pm
smahon
Re: 3.36 Final Drive Gear w/Video

Quote:
Originally Posted by Fun Bobby View Post
...I also don't turn 7000 on the RPMs either
And why not? At this RPM level, the LT will make Fun Bobby much more fun, esp when riding with Harleys!
Nov 7th, 2014 2:53 pm
saddleman
Re: 3.36 Final Drive Gear w/Video

Quote:
Originally Posted by Fun Bobby View Post
Saddleman, one of my Harley riding partners was watching your video and asked if your exhaust was stock? He said my LT didn't sound like yours. I also don't turn 7000 on the RPMs either.

Rob, 2000LT
Navarre, FL
Everything on this LT is stock except for the rear gear ratio change. It even has the original shocks at almost 100,000 miles. My tachometer reads 300 rpm low. In the part with the helmet cam you can hear the rev limiter kick in at 8,300 on the needle. It was actually at 8,600.
Nov 7th, 2014 2:47 pm
saddleman
Re: 3.36 Final Drive Gear w/Video

Quote:
Originally Posted by deanwoolsey View Post
Nicely done Dave. Perhaps a switch and an isolator diode for the fans would help with the air issue. I bet your tires never get changed because of being thin in the middle, huh?
My fans would have been all of the time at that temperature. The fans on this bike come on halfway between the white marks. The bike has almost 100,000 miles on it & the radiator fins have never been cleaned also I have lights blocking the lower third of the radiators. Removing the fans would probably work better.
Nov 7th, 2014 10:06 am
Fun Bobby
Re: 3.36 Final Drive Gear w/Video

Saddleman, one of my Harley riding partners was watching your video and asked if your exhaust was stock? He said my LT didn't sound like yours. I also don't turn 7000 on the RPMs either.

Rob, 2000LT
Navarre, FL
Nov 2nd, 2014 6:49 pm
deanwoolsey
Re: 3.36 Final Drive Gear w/Video

Nicely done Dave. Perhaps a switch and an isolator diode for the fans would help with the air issue. I bet your tires never get changed because of being thin in the middle, huh?
Nov 2nd, 2014 5:43 pm
2006lt
Re: 3.36 Final Drive Gear w/Video

Quote:
Originally Posted by Axle View Post
Wow! Iv'e had my bike for 12 years it hasn't been over 4k rpm in all that time, nice job
You are missing out on alot of power in the motor at higher RPM's.
You had better get some cleaner to remove the carbon on the valves and pistons.

later..Randy
Nov 2nd, 2014 5:39 pm
Voyager
Re: 3.36 Final Drive Gear w/Video

Quote:
Originally Posted by Axle View Post
Wow! Iv'e had my bike for 12 years it hasn't been over 4k rpm in all that time, nice job
You are kidding, right?
Nov 2nd, 2014 5:07 pm
Axle
Re: 3.36 Final Drive Gear w/Video

Wow! Iv'e had my bike for 12 years it hasn't been over 4k rpm in all that time, nice job
Nov 2nd, 2014 7:58 am
saddleman
Re: 3.36 Final Drive Gear w/Video

Quote:
Originally Posted by CharlieVT View Post
Neat!
Thanks for posting.

Is that a K1600GT(L) with the flashers trying to keep up with you?
That was a K1600GTL behind me. The shaded corners still had wet leaves on the road from a rain storm that had winds up to 70 mph that went through on Tuesday night. We had to be careful going into blind shaded corners all weekend.
Nov 2nd, 2014 7:51 am
saddleman
Re: 3.36 Final Drive Gear w/Video

Quote:
Originally Posted by rowie View Post
That looks pretty quick, particularly from 60-80mph acceleration. Seems to me that a milder ratio might be a nice compromise.

Now your friend's flashing front lights might get him in a bit if trouble - I initially thought it was a LEO that you were running from....
Those are LED lights. They only look like they are flashing in the video. LED lights cycle on & off and when you dim them they cycle slow.
Nov 2nd, 2014 6:23 am
CharlieVT
Re: 3.36 Final Drive Gear w/Video

Neat!
Thanks for posting.

Is that a K1600GT(L) with the flashers trying to keep up with you?
Nov 1st, 2014 9:21 pm
gunny
Re: 3.36 Final Drive Gear w/Video

Nice!

I ride like that sometimes.
Nov 1st, 2014 9:09 pm
Buff8stuff
Re: 3.36 Final Drive Gear w/Video

Quote:
Originally Posted by rowie View Post
That looks pretty quick, particularly from 60-80mph acceleration. Seems to me that a milder ratio might be a nice compromise.

Now your friend's flashing front lights might get him in a bit if trouble - I initially thought it was a LEO that you were running from....
Federal law allows for "modulating" white lights on the front of motorcycles for safety. Some companies have pushed this a bit with the flashing LEDs. I have some that were marketed as "modulating", but they definitely flash, so I haven't mounted them. I want to hear from a Judge that they would be allowed first.

Great video Dave! Keep the info on the gear ratio changes coming. I'm seriously interested. I was planning on sending a FD your way to have you make sure it's right, then change it out and send the other just to have as a spare just in case. Now I'm thinking I might want to get two different gear ratios, one for city and fun riding the other for LD trips.
Nov 1st, 2014 8:32 pm
rowie
Re: 3.36 Final Drive Gear w/Video

That looks pretty quick, particularly from 60-80mph acceleration. Seems to me that a milder ratio might be a nice compromise.

Now your friend's flashing front lights might get him in a bit if trouble - I initially thought it was a LEO that you were running from....
Nov 1st, 2014 7:45 pm
saddleman
3.36 Final Drive Gear w/Video

BMW K1200LT w/3.36 final drive - mountain ride - YouTube Look at the temp gauge it was in the 50's F and I couldn't ride like this in the heat of the summer. I'll need to get more air through the radiators. The video always looks slow so the dash cam gives you an idea of the speed.

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