ADVrider

Go Back   ADVrider > Gear > Vendors
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 06-23-2011, 08:06 PM   #46
ontic
 
Joined: Jul 2008
Location: LaoPDR/Australia.
Oddometer: 1,027


Excellent R-Dubb!
That was exactly what I was hoping for
very nice to be able to use what I've got, shouldn't be a problem to turn it down- just gotta find someone with a press, and it confirmed some of my measurements and concers- which is always a nice surprise


Bar clamps are something I haven't let myself worry about yet... time to think about it maybe.
Cheers,
__________________
1974 R90/6
1981 R80G/S
1994 XLR250R
ontic is offline   Reply With Quote
Old 06-24-2011, 07:49 PM   #47
Airhead Wrangler
Adios Mexico
 
Airhead Wrangler's Avatar
 
Joined: Mar 2008
Location: Back in Seattle, FINALLY
Oddometer: 6,199
Quote:
Originally Posted by ontic View Post
Excellent R-Dubb!
+1, big thanks.
__________________
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 07-04-2011, 07:36 PM   #48
Airhead Wrangler
Adios Mexico
 
Airhead Wrangler's Avatar
 
Joined: Mar 2008
Location: Back in Seattle, FINALLY
Oddometer: 6,199


BUMP
__________________
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 07-05-2011, 05:50 PM   #49
igormortis
Beastly Adventurer
 
igormortis's Avatar
 
Joined: Dec 2006
Location: Moving further away from Wellington, New Zealand
Oddometer: 1,150
Do all KTMs share the same fork spacing? Im just thinking about what wheels/hubs/brakes/axles will work with which forks.
igormortis is offline   Reply With Quote
Old 07-05-2011, 08:29 PM   #50
Airhead Wrangler
Adios Mexico
 
Airhead Wrangler's Avatar
 
Joined: Mar 2008
Location: Back in Seattle, FINALLY
Oddometer: 6,199
Quote:
Originally Posted by igormortis View Post
Do all KTMs share the same fork spacing? Im just thinking about what wheels/hubs/brakes/axles will work with which forks.
Same leg spacing since about '98 or so, but the axles and hubs changed a bunch from around '98 to 2003. The 50mm took one axle, the 4354 forks took another and then the 4860s took a different one. Then to make matters worse, after a couple of years the 4860s switched to a larger axle.
__________________
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 07-06-2011, 08:38 AM   #51
HPMGuy
Gnarly Adventurer
 
Joined: Mar 2006
Location: Mid-California
Oddometer: 261
Thanks for posting the clamp/stem drawings R-Dubb!

I have a sample stem/clamp here now from Airhead Wrangler, I will measure the interference they use between the stem and the clamp and duplicate that when machining the triple. Also, for those who have asked if I would be willing to machine the KTM stem for them and press it in the lower triple, that would not be a problem.

I will post the rework of the 4860 lower clamp shortly.
HPMGuy is offline   Reply With Quote
Old 07-06-2011, 08:58 AM   #52
HPMGuy
Gnarly Adventurer
 
Joined: Mar 2006
Location: Mid-California
Oddometer: 261
Here is the rework of the lower clamp for the 4860s.




As per the info posted by Airhead Wrangler above, the top triple on the 4860s will use the same 54mm bore as the original design, so no change is necessary.
HPMGuy is offline   Reply With Quote
Old 07-06-2011, 12:26 PM   #53
Country Doc
Wanderer
 
Joined: Dec 2006
Location: somwhere north of Kingston, Ontario
Oddometer: 2,581
Quote:
Originally Posted by HPMGuy View Post
Thanks for posting the clamp/stem drawings R-Dubb!

I have a sample stem/clamp here now from Airhead Wrangler, I will measure the interference they use between the stem and the clamp and duplicate that when machining the triple. Also, for those who have asked if I would be willing to machine the KTM stem for them and press it in the lower triple, that would not be a problem.

I will post the rework of the 4860 lower clamp shortly.



I'll want a set including the stem, already pressed into the triple. Then it's just a matter of popping on the bearings, and bolting 'er up.

Oh yeah, I need the forks...wheel...frame reinforcements... !!

dc
Country Doc is offline   Reply With Quote
Old 07-06-2011, 09:35 PM   #54
igormortis
Beastly Adventurer
 
igormortis's Avatar
 
Joined: Dec 2006
Location: Moving further away from Wellington, New Zealand
Oddometer: 1,150
Yknow Im sooo close to making a decision on this... Do you guys all have forks in hand, or is availability of these pretty certain? I just want to be sure I can find a pair of the 50s.
igormortis is offline   Reply With Quote
Old 07-06-2011, 10:05 PM   #55
ontic
 
Joined: Jul 2008
Location: LaoPDR/Australia.
Oddometer: 1,027
Quote:
Originally Posted by igormortis View Post
Yknow Im sooo close to making a decision on this... Do you guys all have forks in hand, or is availability of these pretty certain? I just want to be sure I can find a pair of the 50s.
I've got everything in hand now except for these triples
Well OK, there are still a few things that have't arrived in the mail yet- and I have to machine an extension bracket for an oversized rotor.

I ended up getting my WP50's locally (reasonably) just by putting a wanted post in the Oz fleamarket (also got a few other bits this way). I did call around local wreckers, and they had them, but their prices were simply insulting (better to buy and part out a donor bike yourself).
Other than that you can easily pick them up from US or German ebay (amongst other places). I found quoted prices on postage to be a lot cheaper from Germany than from the US, though the forks could often be had a bit cheaper in the US.

Here is a set of 640adv forks with triples (ready for a 300mm rotor)

Here is a set of forks alone

For German ebay, in my experience, most sellers do not seem to offer international postage- I have had my best luck in my initial inquiry by always directly referring them to:
http://www.dhl.de/en/paket/privatkun...nal/paket.html

After approaching the german sellers this way, a large majority of them seem to be fine with postage.

If you want to discuss prices or anything else regarding this, shoot me a PM- like I said, I have finished sourcing everything I need and have gone through a hell of a lot of international ebay hunting and communications,
Cheers,
__________________
1974 R90/6
1981 R80G/S
1994 XLR250R
ontic is offline   Reply With Quote
Old 07-08-2011, 07:58 AM   #56
Airhead Wrangler
Adios Mexico
 
Airhead Wrangler's Avatar
 
Joined: Mar 2008
Location: Back in Seattle, FINALLY
Oddometer: 6,199
I guess my only suggested change would be that of the material used. I'd suggest 7075T6 over the 6061T6. Below are the relevant mechanical properties for comparison. 7075T6 is superior in just about everything without any real penalty in weight and better machinability. Note the difference in fatigue strengths.

6061T6

Ultimate Tensile Strength 310 MPa 45000 psi AA; Typical
Tensile Yield Strength 276 MPa 40000 psi AA; Typical
Fatigue Strength 96.5 MPa 14000 psi AA; 500,000,000 cycles completely reversed stress; RR Moore machine/specimen
Density 2.7 g/cc 0.0975 lb/in
Machinability 50 % 50 % 0-100 Scale of Aluminum Alloys
Shear Strength 207 MPa 30000 psi
Fracture Toughness 29 MPa-m 26.4 ksi-in
Hardness, Brinell 95 95 AA; Typical; 500 g load; 10 mm ball


7075T6

Ultimate Tensile Strength 572 MPa 83000 psi AA; Typical
Tensile Yield Strength 503 MPa 73000 psi AA; Typical
Fatigue Strength 159 MPa 23000 psi AA; 500,000,000 cycles completely reversed stress; RR Moore machine/specimen
Density 2.81 g/cc 0.102 lb/in
Machinability 70 % 70 % 0-100 Scale of Aluminum Alloys
Shear Strength 331 MPa 48000 psi
Hardness, Brinell 150 150 AA; Typical; 500 g load; 10 mm ball
__________________
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 07-09-2011, 12:33 AM   #57
Garthe
ROCKS ARE YOUR FRIENDS...
 
Garthe's Avatar
 
Joined: Nov 2004
Location: Arizona
Oddometer: 4,290
OK, how do I get on the 'list'...WP EX 50mm BLACK.

Also intrested in having a stem made/fitted, if possible.

What's the price, lead time and how/where do we send $$$.

Thanks for all the work in setting this up...



I would like to use this handle bar clamp. Will this be a special order? Or, will the spacing already be set up this way?

Garthe screwed with this post 07-09-2011 at 12:56 AM
Garthe is offline   Reply With Quote
Old 07-09-2011, 07:30 AM   #58
SOLO LOBO OP
airhead or nothing
 
SOLO LOBO's Avatar
 
Joined: Mar 2004
Location: Shoreline, WA
Oddometer: 8,335
Quote:
Originally Posted by Garthe View Post
OK, how do I get on the 'list'...WP EX 50mm BLACK.
I've put you on the list, but send a PM to HPMGuy with your request to be certain
__________________
"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 07-09-2011, 03:08 PM   #59
Garthe
ROCKS ARE YOUR FRIENDS...
 
Garthe's Avatar
 
Joined: Nov 2004
Location: Arizona
Oddometer: 4,290
^
Garthe is offline   Reply With Quote
Old 07-10-2011, 01:15 AM   #60
Adrian V
Gnarly Adventurer
 
Joined: Jul 2008
Location: Albany Western Australia
Oddometer: 464
Which forks?

I'm thinking about building up a GS, possibly with a Rooney frame. Could someone fill me in on the advantages/disadvantages of the different ktm forks? Why are people going for the 50mm Extremes rather than the 4860's?

Cheers,

Adrian
Adrian V 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 12:42 PM.


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