Added reply in a thread Filterskins? Thumbs up or thumbs down? 5/22/2020 5:43 AM

If you have ever ridden a sand track with twin air skin setup used as instructed you will understand why people use them. The point is that the skin is not oiled, nor is the layer that is next to it. So first you have the normal filter oiled as usual. ... more »

Added reply in a thread 250f too fast and heavy but I’m too big for non full sized bikes 2/3/2020 11:57 AM

I have a prediction for you, 20 years from now you will write here in Vital how that two stroke 125 was the best bike you ever had and they don't make bikes like that anymore

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Added reply in a thread Understanding Sag... 8/29/2018 2:21 PM

You are thinking backwards. Adding preload extends the shock and therefore increases the ride height, i.e. less sag. If you have weak spring then initially your ride height will be too low (too much sag) and therefore you need to compensate that with ... more »

Added reply in a thread Spoke with my wallet (not smoke with my wallet...) 8/4/2018 10:45 AM

At least the Yamaha catalog I use for our 2018 show same part number for 2019. Best to confirm from dealer though.

Added reply in a thread Ktm 150 rings replacement 6/28/2018 2:50 PM

I guess it even shows in your picture but I still want to confirm that you had the o-ring under that sleeve that you are holding in your hand? Did you oil the crank seal or that sleeve before assembly? Starting it dry may destroy the seal. And the seal ... more »

Added reply in a thread 2018 crf250r breaking clutch baskets 6/10/2018 2:26 AM

I reckon they are just basket cases.

Added reply in a thread Ktm 150 rings replacement 5/2/2018 1:41 PM

There should be no need to grind anything. Check for example this video to make sure you have assembled it correctly. https://www.youtube.com/watch?v=zWfgXzlpHM4

Added reply in a thread How to be a "proper" 50 dad 4/7/2018 12:06 AM

Have a separate race bike with engine tuned for peak power at high revs by famous tuner and let everybody know that. However always practice with stock bike and then be mad at the kid as he / she does not keep the revs at the top when racing.

Added reply in a thread Ktm 150 rings replacement 3/25/2018 1:53 PM

I think it is #33 in OP bike's countershaft diagram. Check the surface of the bushing that goes inside the seal and if it has worn then buy the repair kit #99.

Added reply in a thread Removing stain from clutch cover 2/21/2018 4:01 AM

WD-40, 5-56 or similar may at least temporarily make it look better.

Added reply in a thread Ktm 150 rings replacement 2/20/2018 9:01 AM

I am sure there are several tricks for that roller bearing, a low tech one is to first pry the roller pins out then find large washer that just fits inside the outer ring. Drop that in there and then put the roller pins back, then you have a way to apply ... more »

Added reply in a thread Ktm 150 rings replacement 2/17/2018 2:53 AM

Good old trick which is also the official procedure in KTM service manual: heat the case in oven to 150C and bearings fall out when you knock the case on wooden table. As for the clutch inner hub as it has visible notches from plates in addition to the ... more »

Added reply in a thread New KTM85sx delivered w/o premix... 2/12/2018 11:55 AM

Spill a bit of that and regular gas on paper and let dry, if there is oil it should leave a greasier stain. Edit: Oh I did not read that it is already gone. Well I guess you need to take dealer's word for it.

Added reply in a thread Searching for KTM 350 service manual 2/7/2018 10:54 AM

At least from the ones that I have bought from dealer on CD it is fairly easy to save them as a pdf file, I keep those in ipad and phone. Let me know if you need help how to do that.

Added reply in a thread Which Tire Spoons 1/11/2018 9:17 AM

I use these kind of spoons and the part where I tend to leave marks is the very last bit of putting the tire back on. The solution for that is more spoons as you can place them all in there before it gets tight.

Added reply in a thread Ktm 150 rings replacement 1/8/2018 11:24 AM

At BDC exhaust port is of course wide open. To measure you can use a regular caliper or make a tool from something that you have in garage. It is not that critical to be exactly within 0.1 mm there is slack here and there but as long as it is close.

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Added reply in a thread Ktm 150 rings replacement 1/7/2018 2:57 PM

I think you have misunderstood something. You choose base gasket thickness so that you get correct piston height (squish, X-distance). Then after you have installed cylinder you check Z-distance to see that with those base gaskets that you used the position

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Added reply in a thread 2017 Husqvarna FC350 Piston 11/9/2017 8:37 AM

To be precise you asked "which cast pistons should I avoid for my 4-stroke" so the op bike was not the criteria

wink
Anyway we both talk about the same thing, modern 4-stroke mx bike pistons are almost always forged whereas 2-stroke pistons are ... more »
Added reply in a thread 2017 Husqvarna FC350 Piston 11/8/2017 10:19 AM

I can start the list, two can be found from the ProX web site

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"Cast genuine 4 stroke pistons are used in relatively low performing engines like the Honda XR400R or Yamaha XT600" http://www.pro-x.com/genuine-pistons/
Added reply in a thread Hot Rods Crankshaft Catastrophic Failure (KTM 150 SX 2013) 10/10/2017 10:05 AM

This is getting completely sidetracked from the Hot Rods issue but let me explain the insurance saga a bit; this is not just mx it is all motorsports in Finland. With mx it is especially bad because of the small number of bikes vs lots of injuries. It ... more »