You tube video, how to set sag

[Robert Taylor]

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[Mental Trousers]

Great idea Robert. Lots more of this sort of thing are needed, particularly how to read suspension problems in the wear patterns on tyres.

[Robert Taylor]

Great idea Robert. Lots more of this sort of thing are needed, particularly how to read suspension problems in the wear patterns on tyres.

Stay posted!

[Ocean1]

Stay posted!

Got a tutorial that'll get me into that first corner at the front Robert?

[onearmedbandit]

Great stuff!

[kiwifruit]

Thank you

[johan]

Great video!

I was wondering, where is the most correct place to measure sag, distance from the swing arm pivot point?

Measuring at the middle of the swing arm will obviously give different numbers compared to measures taken back at the wheel centre, if I'm not mistaken?


Also, are there any recommended sag numbers for the shock itself, to measure sag not affected by the linkage ratio etc?
For instance, am I looking at using half of the shock's available travel at correct measured rider sag, or less or more?

Hope that makes sense.

cheers

[Robert Taylor]

Great video!

I was wondering, where is the most correct place to measure sag, distance from the swing arm pivot point?

Measuring at the middle of the swing arm will obviously give different numbers compared to measures taken back at the wheel centre, if I'm not mistaken?


Also, are there any recommended sag numbers for the shock itself, to measure sag not affected by the linkage ratio etc?
For instance, am I looking at using half of the shock's available travel at correct measured rider sag, or less or more?

Hope that makes sense.

cheers

Johan,

As you were born at the top of the world ( a very agreeable country called Sweden ) and are now at the bottom of the world you should have purchased a better quality of that product invented by a Swiss engineer in 1958, VELCRO. To survive down here and stop falling off the bottom you need to have your feet firmly planted on the ground, aided and abetted by velcro.
The end of the swingarm ( or close to at a reliable fixed point, preferably where there is a change of section ) is always the best point and as vertical as possible. Thats where all factory engineers and suspension engineers ( well those without the affliction of buggered knees or indolence ) adjudge it from. Thats the language everyone thinks. If you measured somewhere at the middle where there is often no clearly defined point / change of section then your repeatability would be haphazard! And youd be talking a different language to everyone else, you might as well be talking your native tongue, Id understand a few words of Vikingspeak but thats about it!
The start ratio of common linkages for common bikes is anything from about 1.8 :1 to 2.4:1 but it varies through the whole stroke in progression. Deeper into the stroke the shock shaft is moved further for the same wheel movement. You could map all this and put it into a program.
Its not before time that data logging is now legal in some of the premier classes in championship level NZ road racing.

[johan]

Thanks for that clarification!

I've always wondered where all the velcro would go

[Robert Taylor]

BTW thanks a heap to Bike Rider TV and the guys from BRM magazine for filming my monologue

[Quasievil]

Hi I chucked that up on the homepage of the www.kiwiracer.co.nz website mate hope thats cool

[Robert Taylor]

Hi I chucked that up on the homepage of the www.kiwiracer.co.nz website mate hope thats cool

All good thanks Quasi. We hope to make more delving into other setup subjects and issues