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September 10th, 2017, 03:22 AM   #1
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I Ride: when I can which isn't often enough. FX450, FE570
FX450 front end

How's things guys?

Since owning/using the 450 for motard track work I was of the opinion the bike wasn't very planted in the front. I would constantly loose traction, it would chatter mid turn etc. eventually I went down.

I swapped bikes for a session on a YZ450. Well, immediately I lapped quicker than the other rider on my Berg by 1 second. I was taking it easy being not my bike. This bike would run through the corners beautifully and I was able to keep up with the quick riders.

I know I could get the suspension set up to motard specs etc, triple clamps and the like but none of these other bikes are modified. They are just dirt bikes with wheels. One other rider who runs around me says he hasn't even looked at the suspension settings since buying it second hand.

Prior to this ride day I replaced the rear spring for a stiffer one to get the sags right and brought the forks up through the clamps 5-7 mm.

What's your thought guys?
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September 10th, 2017, 03:56 AM   #2
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Lower the forks. These bikes are sensitive to adjustments and 5-7mm seems way too much. Try just 1-2 or even flush to the clamps.
Thanks from Alan

Last edited by jon andersson; September 10th, 2017 at 03:59 AM.
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September 10th, 2017, 06:02 PM   #3
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I Ride: when I can which isn't often enough. FX450, FE570
Guys, any idea which of the KTM triples with an 18mm offset will fit the likes of the FX/FE 70 deg Bergs?
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September 10th, 2017, 08:54 PM   #4
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I Ride: FX450 - sold, '08 KTM 690SMR, '12 KTM250SXF (SOLD) 2016 Husky FC250 new race bike!
Factory rear sag is too much...take 10-15mm out (less sag).
I ran a 14mm offset triple as well. (Off a 125sx)
Any KTM triple after 03 to 16 will work.
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September 11th, 2017, 03:17 AM   #5
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I Ride: when I can which isn't often enough. FX450, FE570
Originally Posted by RogerB39 View Post
Factory rear sag is too much...take 10-15mm out (less sag).
I ran a 14mm offset triple as well. (Off a 125sx)
Any KTM triple after 03 to 16 will work.
Thanks Roger.

From doing some research the common triples are 19mm up. Below that are looking to be from the 'hard parts' bin or the rare SXS.

Last edited by Alan; September 11th, 2017 at 03:31 AM.
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September 11th, 2017, 08:55 PM   #6
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I Ride: when I can which isn't often enough. FX450, FE570
Roger, I had fitted a heavier spring and set the sag around the 15mm mark.

I have a set 18mm triples on the way. I couldn't find anything with less.
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September 12th, 2017, 06:57 AM   #7
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I Ride: 2010 FX 450
You really need to sit on the tank with these bikes as the centre of gravity is further back due to the 70 deg engine.
They have there pros and cons and on tight trails is where they really shine.
P.S. I still need to borrow your tuner


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September 12th, 2017, 12:53 PM   #8
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I Ride: when I can which isn't often enough. FX450, FE570
Smash, you should own one. Matched up with the FX ECU is ideal, plus run a map switch on number 2. Open up that airbox.

Yeah there is so much conflicting opinions re riding style/setup etc. A mate sits right back on his Husky and goes around you like you wouldn't believe. Others up front. My thinking has been up front as you would off-road. Until I get the geometry sorted it will still be trial and error.

I'm also thinking 14mm offset would be more preferable than the 18mm considering how unstable they are in the front compared to others. I'll give the 18's a shot first and see how they go.
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September 15th, 2017, 06:52 PM   #9
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I Ride: when I can which isn't often enough. FX450, FE570
I have some 18mm triples on the way from WA.

Can't locate the SX 14mm clamps.

Guys, what's the thought on the ideal motard 'trail' compared to the original dirt bike 'trail'?

Using a trail calculator my standard trail with the 22mm offset/21" wheel is 149.6mm

With the 22mm offset/17" wheels it's 121.7mm. 27.9mm less.

So with the 18mm offsets I get 126.1mm. 23.5mm less than original.

If I did have 14mm offsets I'd have 130.6mm. 19mm less

Is there an ideal we are looking for against the original trail suited to motard? Different tracks diff offset I suppose but I don't do gokart tracks. More open flowing tracks.

Can the rake be altered by way of position in the triple be used to account for any loss in trail?

Thanks guys.

Al.
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September 16th, 2017, 12:32 AM   #10
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Quick reply just in work ....if you need some triple clamp I am going to 6 there is a company in Italy making them custom it's '' rosciano moto'' they have 2 model one cost 550 and the other 600 ( euro)and you can change the offset on it withouth taking the clamp off +/- 5

The only downside is price
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