Pulsing front brakes.....

[Rio Wil]

Hmmmmmm.....your rotors are virtually new which suggests this is a low mileage Valk and might even have the original tires still on it.  So how many miles and take a look at the date code on the front tire.  I am not so sure that you don't have a bad front tire (slipped belt?/).  Or perhaps you have a frozen caliper so it doesn't free float any more......has the bike sat  for a long period....

[sawdustar]

Hmmmmmm.....your rotors are virtually new which suggests this is a low mileage Valk and might even have the original tires still on it.  So how many miles and take a look at the date code on the front tire.  I am not so sure that you don't have a bad front tire (slipped belt?/).  Or perhaps you have a frozen caliper so it doesn't free float any more......has the bike sat  for a long period....

Rio......
The bike has 71,150 miles on it, so the tires have been changed multiple times on this bike. I know that the tires on this bike will need to be replaced around spring of next year as these still have some ride time left on them before replacement.
What I was told by the previous owner is that "I've never done anything to it except change oil, filter, air filter, tires, put gas in it and ride." I changed the final drive oil on it for the first time since the previous owner got the bike....10 years ago. The drive oil smelled terrible and I have plans on replacing the final drive oil once again in a week or so.

So now that I'm learning about a Valk and what services are needed/expected and such, I'm in a steep learning curve about the bike and I do have plans to take the front end apart, grease the steering yoke bearings, clean and service the front brake calipers, master cylinder, check/replace the front wheel bearings, change the fork oil for the first time ever, and more. I'm just trying to sort through it all and learn about what all needs to be done and what I can do myself.

So there you have the story of where I am and what I'm finding. 

[R J]

I've read this post several times and I've come to the conclusion your front TIRE is the problem.      The rotors are in tolerance and should not be causing the pulsing.    So, that leaves the tire.

[sawdustar]

I've read this post several times and I've come to the conclusion your front TIRE is the problem.      The rotors are in tolerance and should not be causing the pulsing.    So, that leaves the tire.

I will take a much closer look at the front tire.

[Rio Wil]

I want to nitpick on the front rotors a bit more.  At 4.67mm (.183) these rotors have only about .010 wear on them.  At 71K miles either they are new rotors or the PO was a heavy back braker (look at the rear rotor---is it heavily worn). If he was a big rear braker, makes me believe the front calipers are frozen from lack of use and not floating (not talking about the pistons).

I still would not rule out a bad front tire either.....

If you haven't done it already, one of the first maintenance checks you need to do if this is a new to you Valk, is to pull the rear wheel and check the condition of the final drive splines AND the condition of the drive shaft/pinion cup splines. Lack of lube in these splines lead quickly to expensive repairs.

[pancho]

Yep, what Rio said about the rear drive splines and pinion cup...... I didn't want to mention it until you got caught up a bit,, BUT NOW THAT IT IS OUT,, that need to be one of your priority items before you do any serious riding.

[sawdustar]

Yep, what Rio said about the rear drive splines and pinion cup...... I didn't want to mention it until you got caught up a bit,, BUT NOW THAT IT IS OUT,, that need to be one of your priority items before you do any serious riding.

OK...it's on my priority list of things to do/check. Now I gotta find out about it and read up before I start to do this little task.