ADVrider

Go Back   ADVrider > Bikes > Old's Cool > Airheads
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 12-31-2012, 09:52 PM   #1
sigpe57 OP
Gnarly Adventurer
 
Joined: Oct 2005
Oddometer: 335
R80ST vs. R80 Monoshock Suspension

Just saw this ad on ebay. Just wondering.

The owner converted an '86 R80 to a R80ST look-a-like.

http://cgi.ebay.com/ebaymotors/1986-...item2ec4bd0dce



Are the frame and suspension setup the same between R80 monoshock and R80ST? Are parts interchangeable between these 2 bikes? Can you put an R80 monoshock rear wheel on a R80ST?

Thank you for the reply,

TT
sigpe57 is offline   Reply With Quote
Old 12-31-2012, 10:18 PM   #2
Mark Manley
On my way
 
Mark Manley's Avatar
 
Joined: Apr 2010
Location: Back home in the UK
Oddometer: 598
I think an R80RT of that era would have been monolever from new so it has not been converted, the spoked rear wheel will not fit as it has three bolts and the monolever one has four. Apart from the insruments there is not much ST about this bike, it still has twin silencers and the right hand silencer mount is not there on the ST frame which is which another difference.
This does not mean it is not a capable machine, a friend of mine has done the same to his monolver RT and loves the bike but if you want an ST you will have to buy one as this is nothing like it.
From what I can recall the only parts that are the same are the engine and gearbox, just about everything else is different.
__________________
If it's in the Touratech catalogue then you don't need it

"You've got to think for yourselves! You're all individuals!"-Brian of Nazareth

Mark Manley screwed with this post 12-31-2012 at 11:24 PM Reason: more info
Mark Manley is offline   Reply With Quote
Old 01-01-2013, 01:42 AM   #3
squish
Out of the office.
 
Joined: Dec 2003
Location: Where the Ghetto meets the sea.
Oddometer: 5,934
Subframe is different
Three bolt vs four or four vs five rear wheels.
Shock mount point at the frame is different too. At least the r80 uses the big battery and the st uses the smaller one.

I've got one of each in the stable.
__________________
On vacation for a spell
squish is offline   Reply With Quote
Old 01-01-2013, 07:05 AM   #4
Airhead Wrangler
Adios Mexico
 
Airhead Wrangler's Avatar
 
Joined: Mar 2008
Location: Back in Seattle, FINALLY
Oddometer: 6,343
Squish mentioned the upper shock mount being different, but the lower one is also different. The shock mounts to the swingarm on the ST (same swingarm as G/S) whereas it mounts to the the final drive on the later mono models.
__________________
R80ST Gets The HPN Treatment
Seattle to TDF on an airhead

Current rides: HPN #834, '93 R100GSPD "red rocket", '73 R75/5 Toaster mongrel, '80 Ducati Pantah 500SL, '92 DR350, '67 Honda SS50, '80 Honda Chaly.
Airhead Wrangler is offline   Reply With Quote
Old 01-02-2013, 04:58 PM   #5
mark1305
Old Enough To Know Better
 
mark1305's Avatar
 
Joined: Feb 2005
Location: Merritt Island, FL
Oddometer: 5,934
Also, the ST frame is based on the R65 monolever frame with a few little changes. (that's why R65 gas tanks will fit the ST and G/Ss)
__________________
Mark J
Merritt Island, FL

When a person asks you for advice, they don't want advice. They want corroboration.
mark1305 is offline   Reply With Quote
Old 01-02-2013, 05:14 PM   #6
squish
Out of the office.
 
Joined: Dec 2003
Location: Where the Ghetto meets the sea.
Oddometer: 5,934
Quote:
Originally Posted by mark1305 View Post
Also, the ST frame is based on the R65 monolever frame with a few little changes. (that's why R65 gas tanks will fit the ST and G/Ss)
Funny I though the Mono R65 was the same frame as the Mono R80 and the ST was the same frame as the G/S...
__________________
On vacation for a spell
squish is offline   Reply With Quote
Old 01-02-2013, 06:37 PM   #7
Airhead Wrangler
Adios Mexico
 
Airhead Wrangler's Avatar
 
Joined: Mar 2008
Location: Back in Seattle, FINALLY
Oddometer: 6,343
The ST IS the same frame as the G/S. The mono R65 didn't exist when the G/S and ST came out.
__________________
R80ST Gets The HPN Treatment
Seattle to TDF on an airhead

Current rides: HPN #834, '93 R100GSPD "red rocket", '73 R75/5 Toaster mongrel, '80 Ducati Pantah 500SL, '92 DR350, '67 Honda SS50, '80 Honda Chaly.
Airhead Wrangler is offline   Reply With Quote
Old 01-04-2013, 12:57 PM   #8
mark1305
Old Enough To Know Better
 
mark1305's Avatar
 
Joined: Feb 2005
Location: Merritt Island, FL
Oddometer: 5,934
Oops, I stand corrected on the R65 mono part. I had mis-remembered the description in Zimmerman's BMW Motorcycle Buyers Guide where he describes the origins of the G/S then the creation of the ST as a street version with forks and frame similar to the R 65 with the use of the mono rear end on the ST.
__________________
Mark J
Merritt Island, FL

When a person asks you for advice, they don't want advice. They want corroboration.
mark1305 is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


Times are GMT -7.   It's 11:10 PM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014