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 09-27-2013, 03:49 AM   #1
GrahamM OP
Gnarly Adventurer
 
Joined: Jul 2008
Location: Peterborough, Ontario, Canada
Oddometer: 284
'81 r80gs wp forks

Hi all

Looking at putting a different front end on the GS then extending the rear to match...

Anyone have a good reference to which forks off which KTM are a best fit? Or range of?
__________________
R's G
'09 KTM 530exc, 570 big bore kit
'10 Husaberg FE450
'81 R80G/S: WP4860 KTM front end
'91 R100GS, bumble bee
GrahamM is online now   Reply With Quote
Old 09-27-2013, 04:49 AM   #2
Ras Thurlo
Desert Lion
 
Ras Thurlo's Avatar
 
Joined: Aug 2010
Location: Hillcountry, Italy
Oddometer: 570
Quote:
Originally Posted by GrahamM View Post
Hi all

Looking at putting a different front end on the GS then extending the rear to match...

Anyone have a good reference to which forks off which KTM are a best fit? Or range of?
Have a look at the various "unholy union" threads on this site.

if you want to stick to KTM forks then the two options are:

- USD WP4860s from (approx '03-current) KTM EXCs

- Conventional WP50mm Extremes from (approx 98-99) KTM EXCs

The 4860s are in fact a family of forks that vary based on what KTM model they are put on (e.g. 990ADV is longer and SM is shorter than EXC variant). So better to stick to an EXC derived fork in my mind.

otherwise have a look at DRZ 400 conventionals or Paioli Kabaya USDs. Again both mentioned here in historic forums.


good luck....
Ras Thurlo is online now   Reply With Quote
Old 09-27-2013, 08:54 AM   #3
Airhead Wrangler
Adios Mexico
 
Airhead Wrangler's Avatar
 
Joined: Mar 2008
Location: Back in Seattle, FINALLY
Oddometer: 6,330
Here you go:

http://www.advrider.com/forums/showthread.php?t=735725

Also, the SX forks up through '06 are the same open chamber design as the EXC forks, just different springing and valving. The the '01-'03 forks are the same functionally, but have the smaller axle that nobody wants and which are becoming tough to find.
__________________
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 online now   Reply With Quote
Old 09-27-2013, 09:20 AM   #4
SOLO LOBO
airhead or nothing
 
SOLO LOBO's Avatar
 
Joined: Mar 2004
Location: Shoreline, WA
Oddometer: 8,557
And if you are conventional...

http://www.advrider.com/forums/showt...ghlight=unholy
__________________
"punkrocks what it's all about" - J. Strummer



Quote:
Originally Posted by Stagehand
your bike is suitably dirty. Well done.
SOLO LOBO is offline   Reply With Quote
Old 09-29-2013, 06:17 PM   #5
GrahamM OP
Gnarly Adventurer
 
Joined: Jul 2008
Location: Peterborough, Ontario, Canada
Oddometer: 284
Thanks all, okay... will look for a basket case KTM that I can you the full front end from(forks, brakes and wheel). Might have a line on a 530exc 08 that has a total blown engine... While I am in Germany I should get a set of triples that that are good for teh project...

Any suggestion from anyone that has already done the research before I dig into to the forums that were suggested?
__________________
R's G
'09 KTM 530exc, 570 big bore kit
'10 Husaberg FE450
'81 R80G/S: WP4860 KTM front end
'91 R100GS, bumble bee
GrahamM is online now   Reply With Quote
Old 09-29-2013, 06:29 PM   #6
Clay Spinner
Woodfire or Bust
 
Clay Spinner's Avatar
 
Joined: Nov 2008
Location: Nova Scotia
Oddometer: 581
I would think triples from a 690 adv would be a strong starting point if you are not worried about maintaining oem rake and trail.
Clay Spinner is offline   Reply With Quote
Old 10-04-2013, 09:12 PM   #7
SOLO LOBO
airhead or nothing
 
SOLO LOBO's Avatar
 
Joined: Mar 2004
Location: Shoreline, WA
Oddometer: 8,557
Gleiter (sp?) and Boxertoko sell custom triples to fit (some) KTM forks to airheads

http://www.bmwboxersupplies.com/fork...me02umjrqtetf6
__________________
"punkrocks what it's all about" - J. Strummer



Quote:
Originally Posted by Stagehand
your bike is suitably dirty. Well done.

SOLO LOBO screwed with this post 10-04-2013 at 09:53 PM
SOLO LOBO is offline   Reply With Quote
Old 10-04-2013, 11:16 PM   #8
Ras Thurlo
Desert Lion
 
Ras Thurlo's Avatar
 
Joined: Aug 2010
Location: Hillcountry, Italy
Oddometer: 570
Quote:
Originally Posted by GrahamM View Post
While I am in Germany I should get a set of triples that that are good for teh project...

Any suggestion from anyone that has already done the research before I dig into to the forums that were suggested?
try SWT, he makes them for both 4860s and 50mm:

http://www.swt-sports.de/shop/catego...aram=cid%3D%26
Ras Thurlo is online now   Reply With Quote
Old 11-04-2013, 08:39 AM   #9
LouisPoland
Gnarly Adventurer
 
LouisPoland's Avatar
 
Joined: Jul 2009
Location: Poland
Oddometer: 110






Fork from KTM 400 Military.
__________________
BMW R80/GS 80' & KTM 690 & Suzuki DL650
My videos of trips: www.louis.net.pl
LouisPoland is offline   Reply With Quote
Old 11-04-2013, 02:45 PM   #10
GrahamM OP
Gnarly Adventurer
 
Joined: Jul 2008
Location: Peterborough, Ontario, Canada
Oddometer: 284
Beautiful bike. Exactly what I am working towards!

Was the handling much improved over the stock?

Nice muffler, where did it come from?
__________________
R's G
'09 KTM 530exc, 570 big bore kit
'10 Husaberg FE450
'81 R80G/S: WP4860 KTM front end
'91 R100GS, bumble bee
GrahamM is online now   Reply With Quote
Old 11-04-2013, 11:53 PM   #11
LouisPoland
Gnarly Adventurer
 
LouisPoland's Avatar
 
Joined: Jul 2009
Location: Poland
Oddometer: 110
Quote:
Originally Posted by GrahamM View Post
Beautiful bike. Exactly what I am working towards!
Was the handling much improved over the stock?
Nice muffler, where did it come from?
I do not know what is the muffler, was in the garage ... :) Unfortunately, he was too loud, I changed it to this:

http://www.ebay.de/itm/BMW-R-80-G-S-...item3cd39ce2dd


WP forks are excellent, a different world : :)







__________________
BMW R80/GS 80' & KTM 690 & Suzuki DL650
My videos of trips: www.louis.net.pl
LouisPoland is offline   Reply With Quote
Old 11-05-2013, 01:24 AM   #12
Left Testicle
Gnarly Adventurer
 
Joined: Jun 2013
Location: New Zealand
Oddometer: 117
very nice looking bike
Left Testicle is offline   Reply With Quote
Old 12-08-2013, 03:25 AM   #13
KLEINE
oo
 
Joined: Oct 2012
Location: sometimes Amsterdam
Oddometer: 9
Quote:
Originally Posted by LouisPoland View Post
I do not know what is the muffler, was in the garage ... :) Unfortunately, he was too loud, I changed it to this:

http://www.ebay.de/itm/BMW-R-80-G-S-...item3cd39ce2dd


WP forks are excellent, a different world : :)







[IMG]https://lh5.googleusercontent.com/-Ha4qzHw30LY/Ulfz9qUEgsI/AAAAAAAAVRE/c5xvCnfWwTs/w900-h599-

no/work.jpg[/IMG]
Nice bike I bid on that same muffler on EBay
__________________
A.K.A TINY
KLEINE 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 04:49 PM.


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