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Old 04-17-2013, 09:58 PM   #376
KCDakar
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Oh doGs I love this place.
That said, I am sorry that we have to go through so many trials and tribulations to get our rigs sorted out, but with all the sharing that so many do here on ADV, it helps those, like myself, get through the long winter days waiting for the warmer days so we can go wrench on our own bikes.

My 37:11 FD swap was not a cheap deal either as I had to keep my case (ABS) and swap the gears out of the 850R non ABS. Shop time is a killer! And now that my first born is married and has a rug rat of his own, I can't use him as collateral anymore. He eats too much!
When my transmission shot craps right after the FD swap, I went with an ADV transmission. I knew that it was going to slow my top end a bit, but I was not prepared to hear my baby running so hard at highway speeds. It was a bit of a shock. So now I find myself running a bit slower in the right hand lane and seeing a lot more of the countryside. That's a good thing, right? And talk about climbing steep hills! She's like a mountain goat! The only thing missing is a reverse gear. I will keep my eye out for a 34:11 ABS for a backup for when this one goes. (sorry but I have lost my faith)
Right now she is sitting on crates in the basement waiting for the shocks to get done. Until then, I will be taking notes of the great brain trust that passes through here. In other words, Thank you for sharing.

Speed Safe...
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Old 04-18-2013, 06:02 AM   #377
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Quote:
Originally Posted by KCDakar View Post
Oh doGs I love this place.
That said, I am sorry that we have to go through so many trials and tribulations to get our rigs sorted out, but with all the sharing that so many do here on ADV, it helps those, like myself, get through the long winter days waiting for the warmer days so we can go wrench on our own bikes.

My 37:11 FD swap was not a cheap deal either as I had to keep my case (ABS) and swap the gears out of the 850R non ABS. Shop time is a killer! And now that my first born is married and has a rug rat of his own, I can't use him as collateral anymore. He eats too much!
When my transmission shot craps right after the FD swap, I went with an ADV transmission. I knew that it was going to slow my top end a bit, but I was not prepared to hear my baby running so hard at highway speeds. It was a bit of a shock. So now I find myself running a bit slower in the right hand lane and seeing a lot more of the countryside. That's a good thing, right? And talk about climbing steep hills! She's like a mountain goat! The only thing missing is a reverse gear. I will keep my eye out for a 34:11 ABS for a backup for when this one goes. (sorry but I have lost my faith)
Right now she is sitting on crates in the basement waiting for the shocks to get done. Until then, I will be taking notes of the great brain trust that passes through here. In other words, Thank you for sharing.

Speed Safe...
I doubt there was anysuch animal as a abs 34/11, but I've been wrong before, I built one on an abs FD it might surface someplace the guy I sold it to ran it on an GSA.If I could do as I pleased Anton :http://www.largiader.com/ has built at least one transmission with the gsa low and the gs OD 6th and that would make a great sidecar 37/11 setup.DB
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Old 04-18-2013, 10:19 AM   #378
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Swap the housing cover?



This is a great picture. You might think that you could simply swap the rear housing covers then plug the ABS hole. Actually, you can! But, here's the fly according to what my BMW mechanic told me. Those parts fit together in a very precise manner and to get them right you must properly shim the wheel bearing. If you look at the fiche, BMW carries shims in 18 different thicknesses for this. Getting it right then involves a process of trial and error where you install the shim, reassemble the FD, install the FD on the swingarm, run the motor, remove the FD, remove the rear housing cover, inspect the alignment of the pinion bearing, then do it again until you find the right shim.

You shadetree guys can do this. But if you're paying somebody by the hour, it's cheaper to either do what I did, or buy a new caliper that fits out of the box.
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Old 04-18-2013, 11:13 AM   #379
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Quote:
Originally Posted by DRONE View Post


This is a great picture. You might think that you could simply swap the rear housing covers then plug the ABS hole. Actually, you can! But, here's the fly according to what my BMW mechanic told me. Those parts fit together in a very precise manner and to get them right you must properly shim the wheel bearing. If you look at the fiche, BMW carries shims in 18 different thicknesses for this. Getting it right then involves a process of trial and error where you install the shim, reassemble the FD, install the FD on the swingarm, run the motor, remove the FD, remove the rear housing cover, inspect the alignment of the pinion bearing, then do it again until you find the right shim.

You shadetree guys can do this. But if you're paying somebody by the hour, it's cheaper to either do what I did, or buy a new caliper that fits out of the box.
You information specialists often get bad info when you stray from your comfort zone, trying to bullshit us shade tree mechanics, I have not taken one apart but I will shortly, my 75 hr BMW dealer says about 1.5 hrs all that nonsense about reinstalling it and running it is bullshit one assembles with machinist die between teeth turn it over and disassemble and read the tooth pattern on the parts.If your dealer tech told you that story you need a new mechanic.It seems to me I attempted to outline pinion depth to you in another post somewhere.The trouble with internet forums is there is allot of chaff with the wheat.

In an attempt for there to be peace in the valley, I wouldn't take advice from a guy who broke a cam chain tray either !!!!!
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davebig screwed with this post 04-18-2013 at 07:47 PM Reason: I was unecessarily hard on Drone, he means well.DB
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Old 04-18-2013, 03:01 PM   #380
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Hmmm !

Drone
I hope you don't really believe that elaborate story you told us ! I checked with garage next door about setting pinion depth no new info, I called Julius Dusterhoeft of Gina's BMW he said if your not removing the pinion maybe an hr. Reiterated what I believe measure cover thickness both covers use present shims look at tooth pattern.How difficult is it ? DB
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Even the clearest and most perfect circumstantial evidence is likely to be at fault, after all, and therefore ought to be received with great caution. Take the case of any pencil, sharpened by any woman; if you have witnesses, you will find she did it with a knife; but if you take simply the aspect of the pencil, you will say she did it with her teeth.
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Old 05-09-2013, 03:35 PM   #381
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\
Quote:
Originally Posted by KCDakar View Post
Oh doGs I love this place.
That said, I am sorry that we have to go through so many trials and tribulations to get our rigs sorted out, but with all the sharing that so many do here on ADV, it helps those, like myself, get through the long winter days waiting for the warmer days so we can go wrench on our own bikes.

My 37:11 FD swap was not a cheap deal either as I had to keep my case (ABS) and swap the gears out of the 850R non ABS. Shop time is a killer! And now that my first born is married and has a rug rat of his own, I can't use him as collateral anymore. He eats too much!
When my transmission shot craps right after the FD swap, I went with an ADV transmission. I knew that it was going to slow my top end a bit, but I was not prepared to hear my baby running so hard at highway speeds. It was a bit of a shock. So now I find myself running a bit slower in the right hand lane and seeing a lot more of the countryside. That's a good thing, right? And talk about climbing steep hills! She's like a mountain goat! The only thing missing is a reverse gear. I will keep my eye out for a 34:11 ABS for a backup for when this one goes. (sorry but I have lost my faith)
Right now she is sitting on crates in the basement waiting for the shocks to get done. Until then, I will be taking notes of the great brain trust that passes through here. In other words, Thank you for sharing.

Speed Safe...
KCdakar
I just put a 34/11 on my GSA I now have an extra 33/11 that was on it, it has a leaking seal but I can change that, it's an abs model has a hole for Claudes swaybar mount 4k rpm in 6th is 61 mph with 175/65/15 rear tire, not very many 34/11 with abs as they where an R1100rs early gear set. PM if you have any interest.DB
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Old 05-09-2013, 04:06 PM   #382
rg, sw wa.
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BMW GS final drive shim calculation

Dave, Drone,

Have you seen the following video on final drive shim calculation ?

http://www.youtube.com/watch?v=bQddqKw8Lr8
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Old 05-09-2013, 04:14 PM   #383
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Originally Posted by rg, sw wa. View Post
Dave, Drone,

Have you seen the following video on final drive shim calculation ?

http://www.youtube.com/watch?v=bQddqKw8Lr8
I've seen it and it's for the easy part of it, the hard bit is setting pinion depth where the drive is assembled with machinist blue on teeth and after turning it over one disassembles check and adjusts and does it again till tooth pattern is in center of ring shimming the crown bearing is the easy bit,as in the video.DB

Searched a little and found these :http://www.drivetrain.com/parts_cata...tructions.html
And my favorite BMW mechanics description of the how and why, I believe BMWs flat rate manual calls for 5 hrs to correctly setup a final drive, starting from scratch with a fresh set of gears.
http://www.bmwra.org/otl/finaldrive/
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Old 05-09-2013, 11:21 PM   #384
KCDakar
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Quote:
Originally Posted by davebig View Post
\

KCdakar
I just put a 34/11 on my GSA I now have an extra 33/11 that was on it, it has a leaking seal but I can change that, it's an abs model has a hole for Claudes swaybar mount 4k rpm in 6th is 61 mph with 175/65/15 rear tire, not very many 34/11 with abs as they where an R1100rs early gear set. PM if you have any interest.DB
I sent you a PM before I saw this post davebig. We can carry on there...
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Old 05-20-2013, 09:13 PM   #385
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OK Drone it's time now you've been up and down the hwy,off pavement surely you have an opinion on the 34/11 ? Not to mention you helped Gypsywriter with a stock geared GSA.Have I led you astray ?
In my preferred riding area Mississippi River valley it works well for me.DB
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Old 05-20-2013, 10:13 PM   #386
DRONE OP
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34/11 Final Drive

Quote:
Originally Posted by davebig View Post
OK Drone it's time now you've been up and down the hwy,off pavement surely you have an opinion on the 34/11 ? Not to mention you helped Gypsywriter with a stock geared GSA.Have I led you astray ?
In my preferred riding area Mississippi River valley it works well for me.DB
OK. So . . .

On pavement
  1. great acceleration from a dead stop (cool!)
  2. 1st gear chudder from my sintered clutch markedly reduced
  3. 3rd gear used to be my "around town" gear--now it's 4th
  4. very weird (WTF!) shifting into 5th at FORTY-SEVEN MPH!!!
  5. 6th--the rig is no longer happy at 70-75 mph. Motor sounds like it's over-revved for steady cruising. I got no problem accelerating through 7000 or 7500, but I just don't like holding steady at anything higher than 5500rpm. It feels like I need to shift into 7th. (What? There is no 7th? Can I get one somewhere for cheap?)
However, this means I tend to cruise the slab at 60-65mph which can be argued as a good thing. From a safety standpoint maybe 65mph is a more safe and sane target for long distance pavement riding. My father used to say that you know you're old when you start to think that 55 is a reasonable speed limit! Given today's roads and tires and brake technology, maybe my father's 55 is today's 65?
On dirt
  1. on smooth flat roads, 4th is your friend (used to be 3rd)
  2. on smooth steep twisty roads 3rd is your friend (used to be 2nd-3rd)
  3. on rutty or rocky bumpy stuff just leave it in 2nd (used to have to switch back and forth from 1st to 2nd)
  4. on gnarly suspension-bottoming stuff I can just tractor on through in 1st. Used to be I had to rev and feather.
In fact, on three dirt rides totaling about 5 hours, I only remember having to feather 1st one time at this place where I had to cross over a deep water gully down the middle of the track because a tree branch was blocking the side I was on. GypsyWriter will remember this spot.

This one thing right here is why I wanted the 34/11. My dreams are now fulfilled. I never need to eat chocolate again. I'm happy.
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Old 05-21-2013, 07:25 AM   #387
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Drone. Read your rundown ...what diameter tire do you have on the rear?
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Old 05-21-2013, 07:42 AM   #388
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34/11

Claude, I'd bet he has a 165/80/15 Vredestien Snow + roughly the same as the Nankang but I could be wrong.But he has an GSA trans with the lower 1st & 6th. The FD gears are always about what transmission you have.

Drone
Pretty much my thoughts too, this setup works great for my needs 4500 delivers 70+mph on the slab and I blasted up it in a 35 + mph crosswind getting 31 mpg on my way home(had allot of power) from GR3 rally in WI just to see how my steering setup,145/80 front tire and mileage worked.
I believe that 4 k rpm is the sweet spot for the GS cams best economy this has been true with all 3 of the different FD's I have had in. For everyone of this dog damn list !It's an oversquare engine twist it's tail
inspite of huge grunt around 3400 rpm it's not a tractor !
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Old 05-21-2013, 07:52 AM   #389
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Originally Posted by davebig View Post
Claude, I'd bet he has a 165/80/15 Vredestien Snow + roughly the same as the Nankang but I could be wrong.But he has an GSA trans with the lower 1st & 6th. The FD gears are always about what transmission you have.

Drone
Pretty much my thoughts too, this setup works great for my needs 4500 delivers 70+mph on the slab and I blasted up it in a 35 + mph crosswind getting 31 mpg on my way home(had allot of power) from GR3 rally in WI just to see how my steering setup,145/80 front tire and mileage worked.
I believe that 4 k rpm is the sweet spot for the GS cams best economy this has been true with all 3 of the different FD's I have had in. For everyone of this dog damn list !It's an oversquare engine twist it's tail
inspite of huge grunt around 3400 rpm it's not a tractor !
Maybe we should try destroking one for giggles Dave. Offset ground crank and maybe some modified pistons? BMWGSAT (The T is for tractor) Hmmm. Or MAYBE A Rocket III or GL1800 powered adventure bike project? Sorry..th e little guys in my head are up and around again..over and out.
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Old 05-21-2013, 08:24 AM   #390
davebig
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Maybe we should try destroking one for giggles Dave. Offset ground crank and maybe some modified pistons? BMWGSAT (The T is for tractor) Hmmm. Or MAYBE A Rocket III or GL1800 powered adventure bike project? Sorry..th e little guys in my head are up and around again..over and out.
We really need someone to fund a Ducati Multistrada 4v adv sidecar rig lots of chromoly and aluminum it should be easy to get 140 hp at about 10k rpm and not much flywheel weight, Ducati's love megaphones, once the clutch is out exciting things happen and noise is created.DB
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