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IAM U turn the right way with controlled front brake

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Val
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PostPosted: 21:45 - 30 Mar 2015    Post subject: IAM U turn the right way with controlled front brake Reply with quote
I present you IAM U turn - correct way to do it with just a pinch of a front brake Laughing

https://www.facebook.com/video.php?v=786831904743186
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Last edited by Val on 19:28 - 31 Mar 2015; edited 1 time in total
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Wafer_Thin_Ham
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PostPosted: 21:51 - 30 Mar 2015    Post subject: Reply with quote
He's clearly not heard of Windows movie maker.

Can skip the whole first minute and a bit.
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Doovy
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PostPosted: 23:16 - 30 Mar 2015    Post subject: Reply with quote
Foot / bike down fail.
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Rogerborg
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PostPosted: 09:55 - 31 Mar 2015    Post subject: Reply with quote
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cheeseman
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PostPosted: 09:59 - 31 Mar 2015    Post subject: Re: IAM U turn the right way with controlled front brake Reply with quote
Val wrote:
I present you IAM U turn - correct way to do it with just a hinch of a front brake Laughing

https://www.facebook.com/video.php?v=786831904743186


How embarrassing! But why do you say IAM? It looks like Police rider training to me.
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Skudd
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PostPosted: 11:25 - 31 Mar 2015    Post subject: Reply with quote
Someone posted about linked brakes being the cause, I don't think so myself. However I use the front on most of my U-turns unless really messy roads/tracks. I also have linked brakes.
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lihp
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PostPosted: 12:07 - 31 Mar 2015    Post subject: Reply with quote
Skudd wrote:
Someone posted about linked brakes being the cause, I don't think so myself. However I use the front on most of my U-turns unless really messy roads/tracks. I also have linked brakes.


I've only experienced linked brakes once, but can you correct me if I'm wrong?

I believe that the brakes are only linked when using the front, and that if you use the rear, then ONLY the rear is used?
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Skudd
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PostPosted: 12:11 - 31 Mar 2015    Post subject: Reply with quote
lihp wrote:
Skudd wrote:
Someone posted about linked brakes being the cause, I don't think so myself. However I use the front on most of my U-turns unless really messy roads/tracks. I also have linked brakes.


I've only experienced linked brakes once, but can you correct me if I'm wrong?

I believe that the brakes are only linked when using the front, and that if you use the rear, then ONLY the rear is used?


Both are connected. Front biased more though.
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barrkel
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PostPosted: 16:50 - 31 Mar 2015    Post subject: Reply with quote
Quote:
I've only experienced linked brakes once, but can you correct me if I'm wrong?

I believe that the brakes are only linked when using the front, and that if you use the rear, then ONLY the rear is used?

There's no one single system. On Honda scooters with linked brakes, there's typically three pistons on the front caliper and one piston on the rear, the front brake applies two pistons on the front, while the rear brake applies one piston on front and one piston on rear.

On the VFR, it's much more complicated. All the brakes have three pistons per caliper. The rear brake applies two pistons on rear and one piston on the front left caliper. The front brake applies the 5 remaining front pistons, but the left hand caliper is able to tilt in its mounting. This tilting action is only actuated when the brake is applied and gripping the disc, so that the forward motion tries to rotate the caliper. The tilting action applies pressure to a slave brake cylinder, which in turn actuates the remaining piston in the rear brake caliper (not directly though, oh no, it's mediated by a PCV, "proportional control valve").

Thus, on the VFR, if you apply the rear, it's mostly rear, but also some front, which is also able to feed back into the rear. If you apply the front, it's almost all front, but a little bit gets fed back into the rear. You get most braking power by using both simultaneously.

https://jay-d.com/ecto/brakebleeding/Part1-2.jpg

The rear brake on the VFR is a bit theoretical though. The swingarm presents a large surface for chain oil to soak onto, if not from fling, then from the chain guide / swingarm protector. The rear brake caliper is mounted underneath the swingarm, and chain oil tends to spread down there. After a long tour with scottoiler, my rear brake caliper, pads etc. are invariably coated in oil.
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Pie-Roe
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PostPosted: 20:26 - 31 Mar 2015    Post subject: Reply with quote
lihp wrote:
Skudd wrote:
Someone posted about linked brakes being the cause, I don't think so myself. However I use the front on most of my U-turns unless really messy roads/tracks. I also have linked brakes.


I've only experienced linked brakes once, but can you correct me if I'm wrong?

I believe that the brakes are only linked when using the front, and that if you use the rear, then ONLY the rear is used?


On my first x11 I boiled the brakes limping it home with the rear brake wedged on.
Quite annoying it was.
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Vracktal
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PostPosted: 21:47 - 31 Mar 2015    Post subject: Reply with quote
At first glance I was willing to give him a pass because I know how tricky boxer BMW linked brakes can be, especially on the RT where it's crossfeed (front to rear and rear to front, my BMW is front to rear only.)

But on closer inspection his right foot is down when he's turning so i'm going to go with hamfistedness. For shame, dibble.
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lihp
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Joined: 22 Sep 2010
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PostPosted: 21:58 - 31 Mar 2015    Post subject: Reply with quote
Vracktal wrote:
hamfistedness. For shame, dibble.


Don't be daft! They're highly trained riders, that's why they can do 80 in a 60!
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Albigularis
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PostPosted: 22:52 - 31 Mar 2015    Post subject: Reply with quote
Surprised they never told him in his advancedness how to lift a bike up properly.

There was two of them and they made it look a struggle...
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Old Thread Alert!

The last post was made 11 years, 4 days ago. Instead of replying here, would creating a new thread be more useful?
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