Shimming the KTM Swingarm

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2/23/2017 1:08 PM

jeffro503 wrote:

Wonder if my new Husky may need this in time? Are they a little sloppy brand new , or is it after so many hours?

brocsdad wrote:

My sons bike has 10hrs and yes they are like this from the factory (Husky included).

jeffro503 wrote:

Good advice here. I'll be keeping this in mind when I tear it down for my initial grease up. Book marked this thread. Thanks ...more

No slop on mine jeffro, no worries guy. Let's ride sometime dude! Washougal just cancelled Saturday practice

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2/23/2017 1:15 PM

Shimming is not anything new - I used to see Media Press Bikes (non KTM) back in the steel frame days have shims in all sorts of places to avoid binding the frame. Swing arm pivots were the most likely place to find them - sometimes on either side or even between the engine cases and the swing arm on the inside. Not totally sure if it changed the handling that much but if you can not have your frame in a bind before it flexes as it is intended might be the reason.

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2/23/2017 2:09 PM

mxtech1 wrote:

It blows my mind that people might have the impression that the KTM Engineers have overlooked a design flaw like this.

I can ...more

mx216 wrote:

The swingarm shouldn't be loose at any point. If there is tightening or loosening of the load on the bearings as the swingarm ...more

Shimming inside the collar is a great idea but you mentioned only shimming the brake side? I'm a little confused because you would need to shim the left side to take out the play.

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2/23/2017 2:17 PM

Good thread. I ordered some shims for our 85's just in case. The part numbers on the bags aren't the correct ones for the catalog though-

98089A270 are the .2mm
98089A354 are the .5mm

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2/23/2017 2:20 PM
Edited Date/Time: 2/23/2017 2:22 PM

Tracktor wrote:

Good thread. I ordered some shims for our 85's just in case. The part numbers on the bags aren't the correct ones for the ...more

They were given to me brand new in unopened bags so I posted the numbers. Nihilo sells the 85 shims.

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2/23/2017 2:28 PM

Tracktor wrote:

Good thread. I ordered some shims for our 85's just in case. The part numbers on the bags aren't the correct ones for the ...more

brocsdad wrote:

They were given to me brand new in unopened bags so I posted the numbers. Nihilo sells the 85 shims.

I just meant if you search the Mcmaster Carr website those numbers won't come up. I posted their numbers......

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2/23/2017 2:30 PM

mxtech1 wrote:

It blows my mind that people might have the impression that the KTM Engineers have overlooked a design flaw like this.

I can ...more

mx216 wrote:

The swingarm shouldn't be loose at any point. If there is tightening or loosening of the load on the bearings as the swingarm ...more

brocsdad wrote:

Shimming inside the collar is a great idea but you mentioned only shimming the brake side? I'm a little confused because you ...more

If you shim the left side you will offset the sprockets. By taking up the extra space on the right hand side of the bike you do not mess with sprocket alignment. This is why when doing this you should have a completely loose chassis. I personally prefer to torque the chassis before installing items like the exhaust so that everything is free to float when the bike is placed under its own weight and finds its happy place before torquing.

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2/23/2017 3:44 PM
Edited Date/Time: 2/23/2017 3:44 PM

My swingarm is perfectly tight after almost 200 hours. Just checked it after reading this thread.

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Tomac and/or Anderson for 2020.....

2/23/2017 4:10 PM

My '14 was tight as well. Seems like this may be getting blown way out of proportion.......no pun intended.

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2/23/2017 4:24 PM

Skerby wrote:

This is where extreme weight saving measures get you. It's not always pretty.

This is a interesting comment. Care to elaborate?

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2/23/2017 4:41 PM

Markee wrote:

This is a interesting comment. Care to elaborate?

In the last few years, some models spokes or bar clamps, for instance, were so light they were really weak...

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2/23/2017 4:56 PM

C-Rock wrote:

In the last few years, some models spokes or bar clamps, for instance, were so light they were really weak...

Bar clamps? Though that was circa 2003

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Tomac and/or Anderson for 2020.....

2/23/2017 5:57 PM

Oops, they did it again.
First batch last year...
The guy at my shop told me half his clients with new SXFs bent them and he had one himself with the bike just falling down in the showroom.

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2/23/2017 6:10 PM

So ktm have had recalls with loose crank nuts, and loose fork pistons? Those are the scary ones since you have no way of knowing .

Check yer nuts people!

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2/23/2017 6:25 PM

C-Rock wrote:

Oops, they did it again.
First batch last year...
The guy at my shop told me half his clients with new SXFs bent them and he ...more

kiwifan is that you?

A bike breaking in the showroom? Better never buy a Katoom

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Tomac and/or Anderson for 2020.....

2/23/2017 6:48 PM

Years ago I broke a couple swingarm shafts on my KTM ,I found it had excess clearance like mentioned by the OP,I shimmed the swingarm and I never had another problem,It took away a lot of vibration too.

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My photo gallery: www.pbase.com/thomasef

2/23/2017 7:08 PM

Can someone write what shim and placement of it, that is valid for SXF 450 2017? See attached image. Both sides needed to shim?

Photo

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2/24/2017 8:04 AM

Skerby wrote:

This is where extreme weight saving measures get you. It's not always pretty.

Markee wrote:

This is a interesting comment. Care to elaborate?

Just bored at work, I understand that the weight difference between a steel case insert and no insert is basically nothing. I just felt like someone was going to make a comment along those lines and figured I might as well be the lowest common denominator.

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2/24/2017 8:13 AM

mx216 wrote:

The swingarm shouldn't be loose at any point. If there is tightening or loosening of the load on the bearings as the swingarm ...more

brocsdad wrote:

Shimming inside the collar is a great idea but you mentioned only shimming the brake side? I'm a little confused because you ...more

mx216 wrote:

If you shim the left side you will offset the sprockets. By taking up the extra space on the right hand side of the bike you ...more

Joel....quick question : So on something like removing the swing arm , maybe a full exhaust replacement , it's a good idea to loosen all the motor mounts , install swingarm , exhaust ect ...., and then torque everything down after everything is in place? Just trying to understand here.

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And there goes Jeffro. One of God's own prototypes. A super high-powered mutant of some kind never even considered for mass production. Too weird to live, and too rare to die.

Pimpin' Ho's , Rollin' fatty's......drinkin' beers , beers , beers!! ~ Ja

2/24/2017 8:17 AM

brocsdad wrote:

Shimming inside the collar is a great idea but you mentioned only shimming the brake side? I'm a little confused because you ...more

mx216 wrote:

If you shim the left side you will offset the sprockets. By taking up the extra space on the right hand side of the bike you ...more

jeffro503 wrote:

Joel....quick question : So on something like removing the swing arm , maybe a full exhaust replacement , it's a good idea to ...more

Other way around. Torque the chassis and engine first. I always toque my linkage and swingarm while someone is holding the bike upright...do not know if it does anything, just heard of big name guys doing it.

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Tomac and/or Anderson for 2020.....

2/24/2017 8:30 AM

jeffro503 wrote:

Joel....quick question : So on something like removing the swing arm , maybe a full exhaust replacement , it's a good idea to ...more

Yeah Jeffro! Some exhausts have enough "play"
that they aren't to big of a deal. Anytime the swingarm comes off of a bike I will loosen all of the the other major chassis points for sure, engine mounts, head stays and linkage and re-torque them. If something such as the exhaust will not let motor wiggle in the chassis then I would remove or loosen it. Doing it this way allows everything to settle out and it doesn't put any binds on anything when the bike is placed under its own weight(always torque the main chassis with the bike sitting under its own weight). On the KTM I torque engine, then swing arm and linkage followed by the head stays. In other news next week I'll have the garage shop done. You'll have to come check it out. Doing the cabinets this weekend! Yay! Bout ready to get to doing some work

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2/24/2017 8:54 AM

mx216 wrote:

If you shim the left side you will offset the sprockets. By taking up the extra space on the right hand side of the bike you ...more

jeffro503 wrote:

Joel....quick question : So on something like removing the swing arm , maybe a full exhaust replacement , it's a good idea to ...more

mx216 wrote:

Yeah Jeffro! Some exhausts have enough "play"
that they aren't to big of a deal. Anytime the swingarm comes off of a bike I ...more

Man , after all these years of being in the sport , I never really thought about doing it that way , but it seems totally logical. Send me a PM or something Joel , I'd like to come check your shop out one of these days. I think you have my # , but can't remember if I gave that to you or not. Hope you're good man , and for sure we'll be chewing up some of the same dirt this spring / summer. If it ever warms the hell up around here! So over this crap weather!

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And there goes Jeffro. One of God's own prototypes. A super high-powered mutant of some kind never even considered for mass production. Too weird to live, and too rare to die.

Pimpin' Ho's , Rollin' fatty's......drinkin' beers , beers , beers!! ~ Ja