What have you done to your bike today....

[MartytheMartian]

Yep it would take both bolts to sheer off, as, when you brake, the caliper is pulled onto it's mounting bolts by it's grip on the disc and is designed to mate quite snugly against the back of the fork leg so the biggest danger would be the calliper moving up on the disc and jamming inbetween the wheel and the fork and I am not even sure that can happen because I seem to recall that the calliper on the disc can't move far enough up to come off the disc before it is stopped in it's upward motion by the wheel rim/tyre. In my post I did say that I wouldn't in reality actually use anything other than the right kind of bolts myself but I suspect that it wouldn't be too dangerous to use non-standard bolts as long as they fitted well. I believe that brake callipers and their mountings are designed in such a way as to spread the forces as much as possible within the system. I suspect that sufficient braking force to sheer those bolts would have sent the rider arse over tit long before the bolts gave way.

 

[Sarky B’stard]

You wouldn't want the carrier detaching from the fork leg if only the rotating disc is keeping it aligned

The basic rule of thumb is that A2 steel is about 60% of the strength of Grade 8 high tensile. Tell you what, just chuck away a regular bolt each side and see how you go

'I'd say, "Oi! Marty, NO!" '

 

[MartytheMartian]

Hmmmm I think I will find someone I don't like (which ain't hard) and take one bolt off each of their front callipers and see what happens next time they go for a spin.

All I was trying to say is that those awfully clever folks who design such things (definitely not me) try to do it in such a way that, should something fail in the system it won't be lights out for the pilot.

 

[Sarky B’stard]

Remember part of the assembly strength is down to the clamping force applied through the bolt head, not just the lateral shear strength of the bolt Itself.

 

[MICK60]

Yep it would take both bolts to sheer off, as, when you brake, the caliper is pulled onto it's mounting bolts by it's grip on the disc and is designed to mate quite snugly against the back of the fork leg so the biggest danger would be the calliper moving up on the disc and jamming inbetween the wheel and the fork and I am not even sure that can happen because I seem to recall that the calliper on the disc can't move far enough up to come off the disc before it is stopped in it's upward motion by the wheel rim/tyre. In my post I did say that I wouldn't in reality actually use anything other than the right kind of bolts myself but I suspect that it wouldn't be too dangerous to use non-standard bolts as long as they fitted well. I believe that brake callipers and their mountings are designed in such a way as to spread the forces as much as possible within the system. I suspect that sufficient braking force to sheer those bolts would have sent the rider arse over tit long before the bolts gave way.

I will let you know

 

[BAD LUCK DUCK]

Well it's 0339hrs and I've decided I shall be using the bike to go work for the first time this year..I must admit to a certain sense of what the fuck am I doing...
However this is more due to the shit state of the roads around here and the amount of cheap shit gravel they throw on the roads to repair them..it just massively increases the skid risk and the front wheel going out from under you...
I'll let you know if I crash on the lane or not later...

 

[BAD LUCK DUCK]

HOORAY....I made it...Hope the skip ain't symbolic in some weird and wonderful way of the universe trying to tell me something...
Was dodgey as fuck going down our lane and along the side road to join up with the A53..Once on the A53 though the bike handled great...
I think personally that some of our roads are so badly maintained that they possibly contribute to more accidents than we think..

 

[BAD LUCK DUCK]

Looking forward to riding the bike back to where I live at 1615hrs in the sunlight...
I'll get a photo of that front tyre later...I don't think the tyre is suitable for the shit I have to ride on down the back roads..No wonder all the locals have off road bikes with nobbly tyres

 

[Steve 998cc]

Nobbly tyres make little differance to traction on loose gravel Duck It's just luck if you don't go down or do go down.

 

[Sarky B’stard]

I will let you know

Doesn't that rather presuppose that you will get the opportunity?

 

[Sarky B’stard]

View attachment 15780

HOORAY....I made it...Hope the skip ain't symbolic in some weird and wonderful way of the universe trying to tell me something...
Was dodgey as fuck going down our lane and along the side road to join up with the A53..Once on the A53 though the bike handled great...
I think personally that some of our roads are so badly maintained that they possibly contribute to more accidents than we think..

That's not a skip, that's a Parts Bin.

 

[BAD LUCK DUCK]

Nobbly tyres make little differance to traction on loose gravel Duck It's just luck if you don't go down or don't go down.

That fucked that idea then

 

[half ton]

View attachment 15780

HOORAY....I made it...Hope the skip ain't symbolic in some weird and wonderful way of the universe trying to tell me something...
Was dodgey as fuck going down our lane and along the side road to join up with the A53..Once on the A53 though the bike handled great...
I think personally that some of our roads are so badly maintained that they possibly contribute to more accidents than we think..

I wouldn't park it there mate, It's bound to get hit, I don't know how some of them drivers get their license

 

[Scrappy]

I don't know how some of them drivers get their license

Bus or skip lorry drivers?

 

[half ton]

Bus or skip lorry drivers?

BUS of course ... the skip driver that comes to my work can squeeze into the tightest places with no damage........must have been a Catholic Preist before he took up driving

 

[BAD LUCK DUCK]

I wouldn't park it there mate, It's bound to get hit, I don't know how some of them drivers get their license

We actually have a reserved for motorbikes only parking bay but some twat keeps parking a bus in it

 

[BAD LUCK DUCK]

BUS of course ... the skip driver that comes to my work can squeeze into the tightest places with no damage........must have been a Catholic Preist before he took up driving

Oooooh your naughty...
You'll go straight to Catholic hell for that one

 

[BAD LUCK DUCK]

Those of you that have been kind enough to visit know how long that lane is and it's got some nasty bends and dodgey chickens and sheep that jump out and try mugging you...
You just got no chance

 

[Sarky B’stard]

Catholics have a special hell. As a Proddie I have spent my entire life working hard to qualify. I have a few more credits to earn

 

[BAD LUCK DUCK]

Catholics have a special hell. As a Proddie I have spent my entire life working hard to qualify. I have a few more credits to earn

I don't know which hell I'm booked in at but I intend to visit a few so I'm bound to bump into you and most the lads on here at some point I'd have thought