[bluezed]

Has anyone else got this issue? At speeds around 60-70 km/h (35 - 45 mph) there is a noticeable bouncing coming from the front tire. It doesn't matter what gear I'm in and in what condition the road is... Outside that speed range it's gone...

I'm still on the stock Pirelli Scorpion Rally STR with about 2500km on the clock now.
I asked the dealer today and they checked balance, alignment and spoke tensions and it all was fine. They thought it may be the tire itself but not much that can be done apart from buying a different tire...

Doing a bit of online searching I found a group on Facebook where some people report the same problems with their Norden and on an Africa Twin forum similar issues appear to be discussed...

Have any of you experienced this issue and have you found a solution?

Thanks!

 

[Captain Slow]

Hi blueze, its a common phenomenon with spoked wheels and OEM tyres I’m afraid, Triumph, Honda, Yamaha, KTM and Husqvarna to name a few. My bike does it as well and my previous bike with same tyre did as well. Don’t quote me completely, but the I think the OEM Pirelli STR’s are made in Mexico or Brazil (something like that). My previous bike‘s STR was so badly out of true, sideways and up and down, that I managed to get it replaced under warranty. The replacement was an off the shelf in stock tyre and was a 100% better, but still could detect a slight bob.

I doubt KTM/Husqvarna will replace under warranty, so might be worth buying a new tyre if you can, and see if it improves the bob (not guaranteed though).

I’m going to look at mine, try reseating the tyre and use my wheel stand, to see how much it might be out. I know it ok side to side, because if you stand on your pegs and lean right forward, you can have a look at the rotation while riding. The faulty tyre I had on my other bike, it stood out a mile, wobble terribly, even though it was mounted to the rim correctly.

Good luck

 

[hypersports]

Wow, I just got the bike and was running cruise on the freeway at 80 mph and perfectly smooth.

 

[bluezed]

@Captain Slow thanks for your reply. I'll have a look if I can see anything obvious when the wheel is off the ground.
I've also sent an email to Pirelli Germany yesterday explaining the issue. Let's see what they have to say...
Worst case I guess I'll get a new set... Something different probably...

@hypersports yeah, at 80 mph it runs fine for me too. It's really just in the 35-45 mph range where it bounces quite badly. But I guess it's just the luck of the draw which batch of tires you got...

 

[paletrialrider]

Has anyone else got this issue? At speeds around 60-70 km/h (35 - 45 mph) there is a noticeable bouncing coming from the front tire. It doesn't matter what gear I'm in and in what condition the road is... Outside that speed range it's gone...

I'm still on the stock Pirelli Scorpion Rally STR with about 2500km on the clock now.
I asked the dealer today and they checked balance, alignment and spoke tensions and it all was fine. They thought it may be the tire itself but not much that can be done apart from buying a different tire...

Doing a bit of online searching I found a group on Facebook where some people report the same problems with their Norden and on an Africa Twin forum similar issues appear to be discussed...

Have any of you experienced this issue and have you found a solution?

Thanks!
[/QUOTE

Has anyone else got this issue? At speeds around 60-70 km/h (35 - 45 mph) there is a noticeable bouncing coming from the front tire. It doesn't matter what gear I'm in and in what condition the road is... Outside that speed range it's gone...

I'm still on the stock Pirelli Scorpion Rally STR with about 2500km on the clock now.
I asked the dealer today and they checked balance, alignment and spoke tensions and it all was fine. They thought it may be the tire itself but not much that can be done apart from buying a different tire...

Doing a bit of online searching I found a group on Facebook where some people report the same problems with their Norden and on an Africa Twin forum similar issues appear to be discussed...

Have any of you experienced this issue and have you found a solution?

Thanks!

I too have experienced this same bobbing issue, even on the smoothest of roads? It can be a troubling distraction at times. Based on some of the comments, I will try other tires, more 50/50 based as I was going to do that anyway, but I’m not convinced that’s the fix bc never has there been a comment about bobbing STR’s that I’ve seen and I have looked at plenty of reviews on them. (Chaparral Pirelli STR review etc…)
Strange??

 

[Captain Slow]

Checked my front tyre, not that round and the balance weights were in the wrong place, so rebalanced them. Will find out if it makes any difference tomorrow. The Pirelli STR’s on my bike are made in Indonesia.

 

[Marko G]

Has anyone else got this issue? At speeds around 60-70 km/h (35 - 45 mph) there is a noticeable bouncing coming from the front tire. It doesn't matter what gear I'm in and in what condition the road is... Outside that speed range it's gone...

Yes,
I am at 1000klm and have had the same problem, between 55-70 klms front end bobs up and down a bit.
At first, I tightened up the steering head, as it had a bit of movement, checked the tire and pressure, etc, and played with the front fork settings which didn't make any difference for me.
At first service they balanced the front wheel which didn't fix the issue, I replaced the front tire a couple of days back, and it's a little better.
I have been told that it may be in the rim.

There are a couple of Facebook pages that have a number of people that have experienced the same issue, I haven't read of anyone having had the issue fixed or have come up with the fix. My dealer at first service told me he would contact Husky, but he has been off with Covid for the last week.

This is the only issue I have had, other than that I am very happy with the 901, it is a sure fun bike to ride and own.

 

[Black99s]

Yes,
I am at 1000klm and have had the same problem, between 55-70 klms front end bobs up and down a bit.
At first, I tightened up the steering head, as it had a bit of movement, checked the tire and pressure, etc, and played with the front fork settings which didn't make any difference for me.
At first service they balanced the front wheel which didn't fix the issue, I replaced the front tire a couple of days back, and it's a little better.
I have been told that it may be in the rim.

There are a couple of Facebook pages that have a number of people that have experienced the same issue, I haven't read of anyone having had the issue fixed or have come up with the fix. My dealer at first service told me he would contact Husky, but he has been off with Covid for the last week.

This is the only issue I have had, other than that I am very happy with the 901, it is a sure fun bike to ride and own.

When you replaced the front tire did you check the runout on the rim?

 

[Marko G]

When you replaced the front tire did you check the runout on the rim?

Hey Black99s,
I don't know what the "runout" means.
I had a mechanic change the tire, he had the front wheel on a stand with the axel spinning on ballbearings, rotating the front wheel he felt the rim had a "bit of a flat spot" but didn't think it would make that much of a difference.
I had a tractionator ralli Z put on, which made little difference, the bike still bobs up and down at 55-70klm's.

The dealer where I purchased the bike is contacting Husky, although I don't hold much hope for a positive outcome there, hopefully, I will be proved wrong.
Other than this 1 problem, I am extremely happy with the 901 so far.

 

[Black99s]

Hey Black99s,
I don't know what the "runout" means.
I had a mechanic change the tire, he had the front wheel on a stand with the axel spinning on ballbearings, rotating the front wheel he felt the rim had a "bit of a flat spot" but didn't think it would make that much of a difference.
I had a tractionator ralli Z put on, which made little difference, the bike still bobs up and down at 55-70klm's.

The dealer where I purchased the bike is contacting Husky, although I don't hold much hope for a positive outcome there, hopefully, I will be proved wrong.
Other than this 1 problem, I am extremely happy with the 901 so far.

Runout. Wheel is on a stand with axle spinning on bearings. Use a dial gauge to check the side to side and radial variance from true. Can be corrected by adjusting the spokes - truing the wheel.

 

[Marko G]

Runout. Wheel is on a stand with axle spinning on bearings. Use a dial gauge to check the side to side and radial variance from true. Can be corrected by adjusting the spokes - truing the wheel.

Thanks, Black99s

 

[Shutz]

I have this exact same phenomena, did anybody eventually found out what's the issue?

 

[MAL]

Has anyone else got this issue? At speeds around 60-70 km/h (35 - 45 mph) there is a noticeable bouncing coming from the front tire. It doesn't matter what gear I'm in and in what condition the road is... Outside that speed range it's gone...

I'm still on the stock Pirelli Scorpion Rally STR with about 2500km on the clock now.
I asked the dealer today and they checked balance, alignment and spoke tensions and it all was fine. They thought it may be the tire itself but not much that can be done apart from buying a different tire...

Doing a bit of online searching I found a group on Facebook where some people report the same problems with their Norden and on an Africa Twin forum similar issues appear to be discussed...

Have any of you experienced this issue and have you found a solution?

Thanks!

That can happen when you are over spring in the front end. I had the same issue and softened the front end vis comp, and it fine now.

 

[bluezed]

That can happen when you are over spring in the front end. I had the same issue and softened the front end vis comp, and it fine now.

I did try softening the front but sadly it didn't make a difference to the bouncing issue...

 

[Donk]

I can't say I had front end "bounce" but I was so unhappy with the OEM tires I took them off at 300 miles. Bike feels like it is glued to the road now and no more howling vibration when I corner on pavement. I went with the new Bridgestone AT 41 and even though they say it is 80/20 and I ride mostly on paved roads I'm really impressed with this tire.

 

[hypersports]

@Donk ..What were the issues for you with the stock tires? I've got 200 miles on the bike and have been impressed with how well these things work on pavement. Did some really fun trail riding and of course with the 90/10 street bias there are limitations. Had me thinking about going to a 80/20 for a little bit more aggressive in the dirt but I don't want to lose too much on the tarmac. This thing is a hoot in the canyon!

Edit...Just had a look at those Bridgestones. They look even a bit more road biased than the stock Pirelli's. Interesting that they're categorized at 80 / 20.

 

[Donk]

The Pirellis both howled and vibrated when cornering with some pace. I don't ride aggressively but I do carry some corner speed now and again. Every time I got leaned over on the Pirellis I felt like I was on a rumble strip. Tires are fine straight up but so is a wheelbarrow tire.

 

[hypersports]

Man, such a wide difference in the stock tires for lots of people. I ride the mountains fast enough to park supersports on a SDGT. Coming from that I've been amazed at how I can hustle the Norden through the twisties, she's stable and sneaky fast.

 

[Choppa.Mike]

In the user manual it specifies how many clicks in clockwise direction is the standard suspension setting (sport/comfort) for compression and damping.

I clicked mine all the way back and then all the way into a standard setting. Then did a standard route and dialed it in one click at a time for the roads I primarily ride and my riding style. I suggest you all do the same and I bet you can alleviate some of the odd bouncing. Mine required a little less rebound off of stock.

who knows what the factory set them to or if any customer or Salesperson clicked around your settings while it was on the floor before you picked it up.

 

[Donk]

Man, such a wide difference in the stock tires for lots of people. I ride the mountains fast enough to park supersports on a SDGT. Coming from that I've been amazed at how I can hustle the Norden through the twisties, she's stable and sneaky fast.

I didn't say the Norden wasn't stable and fast nor did I say the OEM tire don't stick because they do stick pretty good. All I'm saying is there is a vibration from the tread pattern when you get them leaned over. Had 2 friends ride the bike, one a track coach, the other head mechanic at the KTM shop and both agreed. May be a good thing in the dirt but on the street it was quite bothersome, not unstable just bothersome every time I got the bike leaned over. Just my 2 cents worth.