Ride height tool - MVAgusta.net
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post #1 of 24 (permalink) Old 08-22-2019, 12:36 PM Thread Starter
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Ride height tool

Does anyone in the UK or Norfolk to be precise have the ride height tool for a Brutale that they would be willing to let me borrow etc. Happy to pay the postage each way if so. Trying to set my bike up and need a baseline!!


Many thanks


Gary
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post #2 of 24 (permalink) Old 08-22-2019, 12:39 PM
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Chris at X-Bikes made some a few years back...and I am sure he still has at least one for his shop. You might try contacting him.

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post #3 of 24 (permalink) Old 08-22-2019, 01:24 PM Thread Starter
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Chris at X-Bikes made some a few years back...and I am sure he still has at least one for his shop. You might try contacting him.



Yep that is a thought and he is close to me but i know whats going to happen, I am going to talk myself into going there and asking him to install a Cordona quickshifter whilst I sort the ride height out!! So it would be an expensive trip for sure!!!
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post #4 of 24 (permalink) Old 08-22-2019, 10:54 PM
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You know you need the Quickshifter Gary

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post #5 of 24 (permalink) Old 08-23-2019, 04:57 PM Thread Starter
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You know you need the Quickshifter Gary

Ha ha you probably right Paul
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post #6 of 24 (permalink) Old 08-23-2019, 09:00 PM
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Ride height tools explained.......
It's all BULLSHIT, UNLESS YOU INDEX THE HUB TO THE SAME POINT EVERY TIME

Think about it.....
Except at mid travel of hub rotation, there will be 2 places in hub rotation where the ride height
will measure the same with the tool......
MV gives no indication as to where the hub should be
If you move the axle forward, you're decreasing the spring rate and damping
If you move the axle backward, you're increasing the the spring rate and damping

Remember spring rate and damping are affected by the square of the suspension ratio......
So the numbers get big really fast
Yes, I made the tools too
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post #7 of 24 (permalink) Old 08-23-2019, 10:27 PM
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That's the point of the tool Noel....to reset the ride height AFTER you move the hub during chain adjustment. Because adjusting the chain changes the hub center location in the swing arm relative to the chassis, and therefore the ride height.

Then again, I don't know what I'm talking about....it's Friday night and I've had an adult beverage or two.

Just set the damn chassis where things feel good and the bike turns as you want and go ride.
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post #8 of 24 (permalink) Old 08-24-2019, 10:20 AM
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Sure Mr Taburini has slept some nights over that issue. It is about setting stearing angle. So if you dont like the suspension afterwards, adjust damping accordingly

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post #9 of 24 (permalink) Old 08-24-2019, 11:59 AM Thread Starter
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Quote:
Originally Posted by theknurl View Post
Ride height tools explained.......
It's all BULLSHIT, UNLESS YOU INDEX THE HUB TO THE SAME POINT EVERY TIME

Think about it.....
Except at mid travel of hub rotation, there will be 2 places in hub rotation where the ride height
will measure the same with the tool......
MV gives no indication as to where the hub should be
If you move the axle forward, you're decreasing the spring rate and damping
If you move the axle backward, you're increasing the the spring rate and damping

Remember spring rate and damping are affected by the square of the suspension ratio......
So the numbers get big really fast
Yes, I made the tools too



Noel..so are you saying forget about the tool and just adjust by feel?



I have no problem with that as the odd mm or movement here or there makes no difference to me!! Maybe on a track searching for the ultimate setup but not for the road. I had my suspension serviced by a well know tech for my weight including gear, setting up the preload, compression, rebound and all seemed fine, however the rear feels low to me and i think I bottomed out last week on a ride (hugger to tail section) so I wanted to check the ride height as a reference point before looking at preload. For me a little bit more rear ride height (using the adjuster) seems like a good way of adding this but if i am understanding it correctly that will in turn effect the preload on the shock? Even with my "tweeked" rear shock I am struggling to find a setting thats compliant enough for the roads where i live without making it feel shite!!
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post #10 of 24 (permalink) Old 08-24-2019, 02:12 PM
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The ride height adjustment affects steering head angle. Nothing to do with shock pre-load, travel or anything else.

When you adjust the chain you rotate the hub within the swing arm, effectively changing the axle center point relative to the chassis. If you change gearing, adding or subtracting links from the chain (or replace a well worn and stretched chain) you will shift the rear axle center point either up or down within the swing arm.

The ride height adjustment compensates to place the chassis and steering angle back to the correct relative position to the rear axle position.

OR you can use it to make the bike steer more quickly or slower to suit personal riding style/demands.
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