Wild Dog Adventure Riding

General => General Bike Related Banter => Topic started by: 2StrokeDan on May 30, 2019, 07:14:52 pm

Title: Has this ever been done before?
Post by: 2StrokeDan on May 30, 2019, 07:14:52 pm
Has anyone seen or heard of a BMW GS1200 that has been converted to chain final drive?

Would it not be nice to be able to play with gearing a bit?
Title: Re: Has this ever been done before?
Post by: allan.cawood on May 30, 2019, 07:16:04 pm
Lead the way!!!


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Title: Re: Has this ever been done before?
Post by: JABO on May 30, 2019, 07:19:30 pm
The final drive chain on a R1200gs is only to keep the skelms from stealing it 4 o clock in the morning. :)
Title: Re: Has this ever been done before?
Post by: LouisXander on May 30, 2019, 07:37:42 pm
No......why.......I changed my gearing from 31/11 to 32/11 without a stupid chain
Title: Re: Has this ever been done before?
Post by: benreaper on May 30, 2019, 07:50:04 pm
Has anyone seen or heard of a BMW GS1200 that has been converted to chain final drive?

Would it not be nice to be able to play with gearing a bit?
If possible would be interested in one?
Title: Re: Has this ever been done before?
Post by: 2StrokeDan on May 30, 2019, 08:02:11 pm
No......why.......I changed my gearing from 31/11 to 32/11 without a stupid chain

You used spanners, I guess.
Title: Re: Has this ever been done before?
Post by: LouisXander on May 30, 2019, 08:03:18 pm
:imaposer:
Title: Re: Has this ever been done before?
Post by: Beebop on May 30, 2019, 08:48:25 pm
That would be quite a setup,
Take the output and turn it 90 degrees, somehow getting out of the swingarm, then have a chain which
doesnt get in the way of the diff/brake disk.
Yeah thats a challenge for sure.
Probably easier to just buy a KTM and suffer that way.
Title: Re: Has this ever been done before?
Post by: trevo on May 30, 2019, 08:51:20 pm
Jare terug het iemand n Yamaha1100  so gedoen met groot sukses op die renbane, GS I don't think so
Title: Re: Has this ever been done before?
Post by: 2StrokeDan on May 30, 2019, 08:54:12 pm
Jare terug het iemand n Yamaha1100  so gedoen met groot sukses op die renbane, GS I don't think so

It's the Borg-Warner conversions on the SA XS1100 Yammies that made me wonder whether it's been done to the king of the FD.
Title: Re: Has this ever been done before?
Post by: pwt on May 30, 2019, 09:08:34 pm
Jare terug het iemand n Yamaha1100  so gedoen met groot sukses op die renbane, GS I don't think so

The conversion was done by the late Tommy Johns and a few other well known players back in the day and was raced by Rod Grey
Title: Re: Has this ever been done before?
Post by: 2StrokeDan on May 30, 2019, 09:11:51 pm
Jare terug het iemand n Yamaha1100  so gedoen met groot sukses op die renbane, GS I don't think so

The conversion was done by the late Tommy Johns and a few other well known players back in the day and was raced by Rod Grey

The likes of that wizard of a Tommy Johns I have not encountered again.
Title: Re: Has this ever been done before?
Post by: LouisXander on May 30, 2019, 09:35:22 pm
Must've been a sight to behold, all the work involved.
Title: Re: Has this ever been done before?
Post by: 2StrokeDan on May 30, 2019, 10:26:09 pm
Must've been a sight to behold, all the work involved.

It was actually pretty simple stuff, for a good tech person like Tommy Johns.

It entailed a small housing that bolted onto the crankcase, in this housing bearings carried a shaft that had female splines that fitted over those of the output shaft, with sprocket-carrier splines coming out the other end.
This housing bolted straight on where the old bevel-drive gear housing sat.

They then made a square-section swingarm to take a rear wheel with sprocket-carrier.
Title: Re: Has this ever been done before?
Post by: Altie7deLaan on May 31, 2019, 06:56:22 am
Jy moet ook ingedagte hou, BMW draai die gs motor 180 grade in die frame elke 90 jaar. :patch:
Title: Re: Has this ever been done before?
Post by: 2StrokeDan on May 31, 2019, 07:23:14 am
Jy moet ook ingedagte hou, BMW draai die gs motor 180 grade in die frame elke 90 jaar. :patch:

Ek dog daai enjins draai vanself? :peepwall:
Title: Re: Has this ever been done before?
Post by: ClimbingTurtle on May 31, 2019, 07:27:07 am
Must've been a sight to behold, all the work involved.

The bike is still around - I have seen it at the Bike Expo at Kyalami, as well as at Zwartkops on some of the shows, it was even ridden on the track then - I dont know who owns it though.
Title: Re: Has this ever been done before?
Post by: jaybiker on May 31, 2019, 07:57:39 am
A different exercise converting the Yamaha which had transverse crank and gearbox shafts, to the boxer where everything is longitudinal, making the conversion considerably more difficult.

But there have been some machines in the past with a longitudinal boxer engine with chain final drive, among them ABC, Gnome and Rhone, Douglas and Velocette.
Title: Re: Has this ever been done before?
Post by: LouisXander on May 31, 2019, 08:00:22 am
Its like taking a Beetle and wanting to make it chain driven.....
Title: Re: Has this ever been done before?
Post by: Dwerg on May 31, 2019, 08:02:39 am
Has anyone seen or heard of a BMW GS1200 that has been converted to chain final drive?

Would it not be nice to be able to play with gearing a bit?

Is dit op die stadium al wat jou keer om 'n GS te koop?
Title: Re: Has this ever been done before?
Post by: Altie7deLaan on May 31, 2019, 11:11:51 am
Has anyone seen or heard of a BMW GS1200 that has been converted to chain final drive?

Would it not be nice to be able to play with gearing a bit?

Is dit op die stadium al wat jou keer om 'n GS te koop?

Ek twyfel, Motorrad is ook maar selektief, en wil nie tappets op hulle bikes loslaat nie. :peepwall:
Title: Re: Has this ever been done before?
Post by: Sithe on May 31, 2019, 11:18:39 am
Has anyone seen or heard of a BMW GS1200 that has been converted to chain final drive?

Would it not be nice to be able to play with gearing a bit?

And what about the telelever Dan, you must also convert that to conventional forks ...
Title: Re: Has this ever been done before?
Post by: EssBee on May 31, 2019, 02:42:26 pm
Must've been a sight to behold, all the work involved.

The bike is still around - I have seen it at the Bike Expo at Kyalami, as well as at Zwartkops on some of the shows, it was even ridden on the track then - I dont know who owns it though.

I posted pics of it somewhere on this forum....it's in Pinetown.
Title: Re: Has this ever been done before?
Post by: EssBee on May 31, 2019, 02:44:10 pm
Jare terug het iemand n Yamaha1100  so gedoen met groot sukses op die renbane, GS I don't think so

The conversion was done by the late Tommy Johns and a few other well known players back in the day and was raced by Rod Grey

The name Ophie Howard sprang to my mind.

I had an incomplete conversion but never got around to finishing it....my XS1100 died on the back straight of Killarney  :'(
Title: Re: Has this ever been done before?
Post by: EssBee on May 31, 2019, 02:45:35 pm
http://www.wilddog.za.net/forum/index.php?topic=133184.0

Oops...sorry 2SD, we're hijacking your frett......
Title: Re: Has this ever been done before?
Post by: bronzy on May 31, 2019, 02:46:48 pm
Jare terug het iemand n Yamaha1100  so gedoen met groot sukses op die renbane, GS I don't think so

The conversion was done by the late Tommy Johns and a few other well known players back in the day and was raced by Rod Grey

The name Ophie Howard sprang to my mind.
Just go buy an XR1000  problem solved  :thumleft:

I had an incomplete conversion but never got around to finishing it....my XS1100 died on the back straight of Killarney  :'(
Title: Re: Has this ever been done before?
Post by: 2StrokeDan on May 31, 2019, 03:43:23 pm
Has anyone seen or heard of a BMW GS1200 that has been converted to chain final drive?

Would it not be nice to be able to play with gearing a bit?

And what about the telelever Dan, you must also convert that to conventional forks ...

Lots of work, but it would be such an improvement. :ricky:
Title: Re: Has this ever been done before?
Post by: katana on May 31, 2019, 03:52:44 pm
Has anyone seen or heard of a BMW GS1200 that has been converted to chain final drive?

Would it not be nice to be able to play with gearing a bit?

And what about the telelever Dan, you must also convert that to conventional forks ...
That has been done.  If only there was a weight loss mod.


Lots of work, but it would be such an improvement. :ricky:
Title: Re: Has this ever been done before?
Post by: 2StrokeDan on May 31, 2019, 03:55:51 pm
Has anyone seen or heard of a BMW GS1200 that has been converted to chain final drive?

Would it not be nice to be able to play with gearing a bit?

And what about the telelever Dan, you must also convert that to conventional forks ...
That has been done.  If only there was a weight loss mod.


Lots of work, but it would be such an improvement. :ricky:

Snorkende gedrog. :eek7:
Title: Re: Has this ever been done before?
Post by: CliveG on June 02, 2019, 07:30:15 pm

That XS1100 Yamaha with a chain conversion, is now owned by Paul Ward in Pinetown, owner of Startline.

If you go on FB, to .. Air Heads BMW Motorcycle Riders .. there a just posted photos of a BM with chain drive, thats going to be used for land speed record. So, never say never.  Just like the, "cannot turn your 4 stroke into a 2 stroke."
Title: Re: Has this ever been done before?
Post by: 2StrokeDan on June 02, 2019, 07:51:41 pm

That XS1100 Yamaha with a chain conversion, is now owned by Paul Ward in Pinetown, owner of Startline.

If you go on FB, to .. Air Heads BMW Motorcycle Riders .. there a just posted photos of a BM with chain drive, thats going to be used for land speed record. So, never say never.  Just like the, "cannot turn your 4 stroke into a 2 stroke."

Hence my question; "Has this ever been done before", because anything can be done.
Title: Re: Has this ever been done before?
Post by: Oshkosh on June 02, 2019, 08:20:46 pm

That XS1100 Yamaha with a chain conversion, is now owned by Paul Ward in Pinetown, owner of Startline.

If you go on FB, to .. Air Heads BMW Motorcycle Riders .. there a just posted photos of a BM with chain drive, thats going to be used for land speed record. So, never say never.  Just like the, "cannot turn your 4 stroke into a 2 stroke."

Hence my question; "Has this ever been done before", because anything can be done.

Danie if you apply your mind any thing is possible!  :thumleft:
Title: Re: Has this ever been done before?
Post by: CliveG on June 08, 2019, 08:52:17 pm

Guzzi Dakar chain drive

http://www.parisdakar.it/wp-content/uploads/2015/11/torri-1991.jpg
Title: Re: Has this ever been done before?
Post by: MellowJo on June 14, 2019, 11:52:18 am
Has anyone seen or heard of a BMW GS1200 that has been converted to chain final drive?

Would it not be nice to be able to play with gearing a bit?

And what about the telelever Dan, you must also convert that to conventional forks ...


The conventional forks were done on the HP2