Trying to keep the 640 low fender... - Page 5

sherpa · 03-28-2006, 03:03 PM

Cool...nice find...thanks...he really raised it alot...looks like he must have a nut on the backside of the upper connection, wonder if that scraped the stanchion at all...

I've yet to do mine....time just fills up with other stuff and slips away....

meat popsicle · 03-28-2006, 05:18 PM

Quote:

Originally Posted by sherpa

Cool...nice find...thanks...he really raised it alot...looks like he must have a nut on the backside of the upper connection, wonder if that scraped the stanchion at all...

I've yet to do mine....time just fills up with other stuff and slips away....

Best to ask boejangles where he found those pics; he didn't post any info in the thread where I found them buried (KTM LC4 Adventure Owners sign in...(sic)). Page ~35. This pic might jog his memory:

Note: the front fender does not look raised in that pic but it was with the other two (and a pic of a rallye cockpit setup).

Renazco · 03-28-2006, 05:49 PM

Quote:

Originally Posted by meat popsicle

Best to ask boejangles where he found those pics; he didn't post any info in the thread where I found them buried (KTM LC4 Adventure Owners sign in...(sic)). Page ~35. This pic might jog his memory:

Note: the front fender does not look raised in that pic but it was with the other two (and a pic of a rallye cockpit setup).

Guy in Mexico is all I can remember

Improv is a beautifull thing

meat popsicle · 03-28-2006, 06:44 PM

Quote:

Originally Posted by boejangles

Guy in Mexico is all I can remember

Improv is a beautifull thing

My eyes are not the best for this, 'cause I have never seen the low-boy up close, but the front fender on that bike doesn't look like the raised one in the closeups.

Anyways, just trying to help out sherpa - he is still worried that the raised low-boy will hit the bottom of the triple clamp.

98rxcmi · 03-29-2006, 05:04 PM

I know that Fox and Rock Shox used a goofy way of measuring fork travel. I ASSume that they all do this

Here is how they figured it

Measure the how far the shock will compress under load.
Then add the negative (pull) That may seem strange but negative is needed according to the shock maker to help keep the wheel on the ground. (no sag is NOT the negative. sag uses up the compressive part) I think it is there so when you pull a wheelie the forks don't go bang! when the springs press them to the end of the tubes.
It always seemed a like a sales tactic to me, but there maybe 1" (25mm) on the front fork of a KTM and that is where you have the missing 25mm

As always I could be wrong

warewolf · 03-29-2006, 06:07 PM

Ohlins shocks have what they call an "anti-top-out spring", IIRC. Yes it is designed to soften the end of the stroke when the load suddenly comes off the shock (think slamming on the front brakes thereby lifting the rear wheel). As a result, they also say you can't measure & set the static sag the same way you would do with a normal shock.

I don't know how this figures into the travel measurements as I've never really bothered with such things on my road bikes.

On my '05, I have the fork tubes pulled through by 25mm and it has bottomed the fender into the underside of the lower triple clamp several times. I will reduce the air gap next fork service, to help stop it bottoming.

meat popsicle · 04-12-2006, 01:17 PM

Heya sherpa,

Check out post #6 in this thread.

Not sure about the newer suspension that your bike has, but his suspension had another couple inches...

mech12 · 07-12-2007, 03:06 PM

Hey guys i tried the gum trick on my forks but found it had an oily taste afterwards, is it worth trying a different brand of gum???

03-28-2006, 03:03 PM	#61
sherpa ^OP ...Robert Joined: Sep 2002 Location: Charlottesville, Virginia Oddometer: 3,175	Cool...nice find...thanks...he really raised it alot...looks like he must have a nut on the backside of the upper connection, wonder if that scraped the stanchion at all... I've yet to do mine....time just fills up with other stuff and slips away.... __________________ Trebor Home Inspections 05 640 Adventure 08 KTM 250 XCFW I'd trade all my motorcycles for one Flying Dragon.

03-29-2006, 05:04 PM	#65
98rxcmi Chrome+Paint=Garage bike Joined: Sep 2005 Location: 03 640 Adventure Oddometer: 126	275mm I know that Fox and Rock Shox used a goofy way of measuring fork travel. I ASSume that they all do this Here is how they figured it Measure the how far the shock will compress under load. Then add the negative (pull) That may seem strange but negative is needed according to the shock maker to help keep the wheel on the ground. (no sag is NOT the negative. sag uses up the compressive part) I think it is there so when you pull a wheelie the forks don't go bang! when the springs press them to the end of the tubes. It always seemed a like a sales tactic to me, but there maybe 1" (25mm) on the front fork of a KTM and that is where you have the missing 25mm As always I could be wrong

04-12-2006, 01:17 PM	#67
meat popsicle Ignostic Joined: Feb 2004 Location: Circumlocution Office of Little Dorrit Oddometer: 13,839	Heya sherpa, Check out post #6 in this thread. Not sure about the newer suspension that your bike has, but his suspension had another couple inches... __________________ Kronreif Trunkenpolz Mattighofen LC4 640 Its not so much staying alive; its staying human that counts.

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07-12-2007, 03:06 PM	#68
mech12 Adventurer Joined: Jul 2007 Location: Channel Islands Oddometer: 34	Hey guys i tried the gum trick on my forks but found it had an oily taste afterwards, is it worth trying a different brand of gum???