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| henry hoover |
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 henry hoover Scooby Slapper
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| -Matt- |
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 -Matt- World Chat Champion
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 Posted: 21:26 - 27 Jul 2013 Post subject: |
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This would be best overall. They sit and secure much snugger and safely - back pocket ones have a tendancy to shuffle about a bit which in an accident isnt what you want. Also they generally are harder to find good fitting/higher spec ones [dainese one being the best at level 2].
Also ones like the one you linked tend to be slightly longer on average which gives a bit of additional protection particulary if you aren't all that tall.
The only downside is the cost really - but then its worth it without doubt if you have the budget.
You can get a decent slot in level 1 protector like this
https://www.ebay.co.uk/itm/like/161072163166?device=c&adtype=pla&crdt=0&ff3=1&ff11=ICEP3.0.0&ff12=67&ff13=80&ff14=83
For as little as a tenner - but if you can afford it , go for it - especially if you're going to be going on track i'd not even consider a level 1 to be honest. |
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| henry hoover |
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 henry hoover Scooby Slapper
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 Posted: 21:37 - 27 Jul 2013 Post subject: |
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It does look pretty secure.
I didn't realise the slot in ones can move about that kinda defeats the object  ____________________ Cbr600rr 2010 Sold
Zx6r 636 2006 sold
Gsxr 750 L1 current |
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| -Matt- |
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 -Matt- World Chat Champion
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 Posted: 21:42 - 27 Jul 2013 Post subject: |
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Its not like a guaranteed thing but its a lot more likely - i'm very skinny and for example i have a jacket thats leather not some tight-zipped racing style one just a casual 'old school' kind of look jacket if you can picture what i mean, and my back protector in that if you really bash the side of it can move almost a quarter of the way across my back - so me vs curb = bad
Before you go and get that one i'd have a quick look at alpinestars ones they may be a tad cheaper, maybe not but worth a lot both equally good standard.
There are also for a tad more some [alpinestars i know do it at least] chest armour incorperating 'vest' versions of those style back protectors if you want to really go all out for the track - again, if you have the money for the extra bit on top i'd consider it definately. |
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 pits World Chat Champion

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| henry hoover |
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 henry hoover Scooby Slapper
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| -Matt- |
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 -Matt- World Chat Champion
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 Posted: 22:13 - 27 Jul 2013 Post subject: |
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Worst case divert via a bike shop on route to the track and get any old level 1 budget one, better that than nothing temporarily.
Could even be cheeky and return it after the day if they accept 'bad fitting' not to condone such horrendous behaviour... |
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 G The Voice of Reason
Joined: 02 Feb 2002 Karma :     
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 Posted: 23:03 - 27 Jul 2013 Post subject: |
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| -Matt- wrote: | This would be best overall. |
What are you basing this on?
Is it purely the next part of your paragraph?
| Quote: | They sit and secure much snugger and safely - back pocket ones have a tendancy to shuffle about a bit which in an accident isnt what you want. Also they generally are harder to find good fitting/higher spec ones [dainese one being the best at level 2].
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Why is the Dianese 'the best' at level 2?
The level 1 / 2 thing is new to me.
I found this. Note the bits I've bolded.
| Quote: |
Judging from this quote, it would seem Lvl 1 provides more protection?
European Standard EN 1621-2:2003[2] defines two levels of performance for CE approved back protectors. The test apparatus and procedure is similar to that of EN 1621-1:1997,[1] but with a different impactor and anvil configuration. The impactor is a rounded triangular faced prism, of length 160 mm, base 50 mm, height 30.8 mm and radius 12.5 mm. The anvil is a radiused cylinder, with its axis orientated to the direction of impact, of height 190 mm, diameter 100 mm and rounded end radius 150 mm. When tested to the procedure defined in the standard, the two levels of performance are:
"Level 1 protectors: The average peak force recorded below the anvil in the tests shall be below 18 kN, and no single value shall exceed 24 kN.
Level 2 protectors: The average peak force recorded below the anvil in the tests shall be below 9 kN, and no single value shall exceed 12 kN."[2]
Back protectors are often not included in the standard complement of armor although many jackets allow a back protector to be installed.
Because of the more delicate nature of the spinal column, back protectors require that lower levels of force be transmitted. The introduction to EN 1621-2 states that approximately 13% of motorcyclists injured in road accidents have an injury to this back region. However, only 0,8% of the injured riders suffer a fracture of the spine and less than 0,2% of injured riders have a serious back injury resulting in neurological damage. This is supported by evidence from the MAIDS Report (2004), the most comprehensive in-depth data currently available for Powered Two-Wheelers (PTWs) accidents in Europe. Serious spinal injures are usually caused by axial forces due to blows on the head, or bending and twisting forces on the back caused by blows to the shoulders, hips and other parts of the body. In the Cambridge Standard for Motorcyclists Clothing, Roderick Woods asserts that the majority of spinal injuries are caused by blows to the hip and shoulders. In the rare circumstance that a motorcyclist received a direct blow to the back the damage would be unmitigable by armor. The concept of a "back protector" is therefore not endorsed by Woods. Although back protectors, as defined in the standard, cannot protect against axial forces they are required to protect the scapula and there is now considerable anecdotal evidence that wearing a certified back protector can significantly reduce trauma in a major accident as they reduce the effect of impacts on the ribs and lessen the blows to internal organs too.
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There's anecdotal evidence that if you like riding twins, it's because your dick has shrivelled up.
Even I wouldn't use that sort of 'evidence' as a reason not to ride twins!
| Quote: | Also ones like the one you linked tend to be slightly longer on average which gives a bit of additional protection particulary if you aren't all that tall.
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Also, quite possibly make it more likely that you'll break your neck.
| Quote: | The only downside is the cost really - but then its worth it without doubt if you have the budget. |
How did you work that out?
| Quote: | if you're going to be going on track i'd not even consider a level 1 to be honest. |
Why not? |
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| Joncrete Cungle |
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 Joncrete Cungle World Chat Champion
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| -Matt- |
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 -Matt- World Chat Champion
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 Posted: 23:13 - 27 Jul 2013 Post subject: |
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You don't seem a fan of my posts lately or maybe its just me
I'll do it by quote as i'm on the phone - not trying to be blunt.
1/2/3 - Based initially on what i said yes about the strap securing and as mentioned being skinny i've found many back pocket ones totally inadequate and probably near useless in an accident for my frame.
I didn't claim they would protect against a direct blow to the back if i've correctly understood your point on the big paragraph
4 Longer for me has meant it covers more of the lower back - not at any time the neck, vs some back pocket protectors which as someone whos quite tall barely cover the majority of my back you'd expect to be protected by a back protector - of course this is open to differences between rider but it was a generalisation based on my experience of the size vs height - maybe too generalised
5/6 If you have the money - why not get the best, i'm admittedly probably more safety cautious than a lot of people doesn't mean its right to be or i'm right by any means - but if moneys 'not an object' and you want protection - why not get something better suited that adequately protects you vs something ill-fitting or otherwise. |
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| G |
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 G The Voice of Reason
Joined: 02 Feb 2002 Karma :     
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 Posted: 23:38 - 27 Jul 2013 Post subject: |
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I'm not a fan of people that offer advice which seems to be more like conjecture or gossip.
If you have good reasoning behind the advice you're offering, do feel free to provide it .
Otherwise, expect to get pulled up if it's just guesswork packaged as knowledge.
I meant to mention - if one in a jacket is moving about, it suggests it's either not right for the jacket (I suspect some velcro would hold it in place) or that the jacket is a poor fit. If the jacket is a poor fit, personally I'd be trying to sort that first.
I suspect that a better fitting jacket will do more in most situations than a back protector.
What exactly do you think a back protector is going to do that you think they are 'near useless in an accident' if you don't think they're going to protect against a direct blow.
From what I can tell, they are tested with a direct blow and that's what the level 1 vs level 2 test is about. You make a big thing of suggesting a level 2 is needed, when the difference between the two is that the level 2 is how it deals with a direct blow.
I haven't seen the results or conclusive evidence, which is why I made a point of using the word 'possibly', but; a back protector, especially a separate one held on with elastic straps can easily ride up in an accident. I'm presuming this is a case where the body is arched outwards.
So your lower body pushes the back protector up, at which point the rigid item can interact with your neck as your arched body bends backwards.
Wouldn't be an issue with in-leathers ones where the leathers are one piece or securely zipped together (note I said securely, rather than, say, zip together systems of Dianese quality!)
Your answer to the last point does not answer my questions.
Ok, it does answer my question if you are of the believe that more money must mean better? Is that the case?
If not, care to answer the questions?
I appreciate Dianese might feel nicer when you wear it - but I'm presuming you're not claiming you'd know the same for the OP.
Finally - I believe you'd said you hadn't done a trackday.
It might be worth doing one before offering advice on them!
Me, if someone had £130 to spend and wanted to be safer on track and the road, I'd suggest they buy a copy of motorcycle roadcraft and book a double-day trackday.
Motorcycle roadcraft they can learn to avoid crashing on the road and having two days on track means they can really focus on progressing slowly, so they don't crash.
Safety concious to my mind means actually knowing what will make you safer; not just throwing money at shiny brand name things and telling yourself it will all be happy-la-la.
Of course, safety cautious is a different concept and one I've not heard before . |
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| -Matt- |
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 -Matt- World Chat Champion
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 Posted: 23:52 - 27 Jul 2013 Post subject: |
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First thing fair enough, no issue with being questioned just has felt everything you've commented on has been to dispute my points but i guess thats justified from how i'm coming across by the sounds of it so no problem
The jacket fitting thing is a fair point, but the jackets do fit me [as best they can at least] as mentioned i'm very 'lanky' for want of a better word, which makes sizing extremely difficult - maybe its things like this i need to include with what i'm saying to make it more relevant to others
The 'near useless in an accident' i believe i mentioned regards it slipping in a bad fitting jacket If so it was because the level of slippage at some point of my back would leave it virtually open to impact with whatever surface at some points, again defeating the point of it.
As you rightly say the tests are done on a 'direct blow' basis, but this still impacts the dispersal of none-direct blows - to cover myself i'll go with speculation on this point, but there can't be a magical centre point at which it takes a blow and everything outside that remains unaltered surely
It is possible they can ride up in some cases i'm sure, but no less than a pocket one could so although a risk i don't think its any more risk, the 'strap on' longer ones have never been below my lower spine to a point that they'd hit the contact surface and quicker than a pocket one causing it 'shoot up' towards the neck etc.
And yes i haven't ever done track day, i don't claim to of though to be fair - i'm going by friends advice - okay maybe a few peoples advice doesn't mean somethings correct i'm just sharing knowledge i've come across, it'd be no more accurate from me having done a track day than it would my collective friends who have, its just opinion and speculation ultimately whoever its from.
It would seem i'm being far too unclear in my explanations perhaps, or more speculations and opinions that aren't made clear to be that
| Quote: | Of course, safety cautious is a different concept and one I've not heard before |
That one i will give you, hands down, lapse of mind  |
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| Deadringers |
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 Deadringers Renault 5 Driver

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 G The Voice of Reason
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 -Matt- World Chat Champion
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 Posted: 00:26 - 28 Jul 2013 Post subject: |
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 G The Voice of Reason
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 -Matt- World Chat Champion
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 Posted: 00:54 - 28 Jul 2013 Post subject: |
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I could 'shuffle' mine but i'm not sure it would nescessarily slide up beyond the neck, it could perhaps skid around over my back i'm sure, but the push to get it to bump up above the neck considering the shape i'd be dubious of - again to be clear, not ruling it out, and if anyones seen otherwise i'll sit back down
| Quote: | From what you're saying, I'm still not seeing why you think they're such a good idea?
You say, I believe, that you appreciate they're not considered to be worth it for protecting the back.
So do you only think that "its worth it without doubt if you have the budget" for the anecdotal evidence they may protect other parts of the body? |
Somewhere one of us has lost each other totally on this point, no blame needed I do think they're worth it for the back - I think they're ONLY really of value to the back, i don't expect them to protect other parts of the body. You can still get severe back damage from side impacts so i dont doubt it doesn't 'protect the back' without question should it stand up to an accident, but yes i think they're a key part in back [spine particularly protection in face on impact]
Maybe you misread/i misexplained the point of it 'dispersing the impact' That was refering to an impact on the back protector and how a central-protector hit vs an outer-protector hit would displace more impact force.
Otherwise i'm lost in the sea of text and need quote-guideance i think  |
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 G The Voice of Reason
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 -Matt- World Chat Champion
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| barrkel |
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 barrkel World Chat Champion
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 Posted: 01:31 - 28 Jul 2013 Post subject: |
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| -Matt- wrote: | You don't seem a fan of my posts lately or maybe its just me  |
G has a bit of a thing about back protectors, as TC does as well re non-foam. TC blames expensive boots for putting his foot into an amputatable state, leaving him 25% disabled. One of the risks of harder armoured parts is that they transfer the force somewhere else. Ideally, they should simply be spreading the force of impact over time and space, but if they're not fitted correctly, or poorly designed, or you're unlucky with the impact, they might act as a lever, focusing the force.
Some people on here have indirectly reported that it's the initial impact with the road and induced twisting motion that causes most damage. That's consistent with what G quoted too.
However, I also have a bit of time for someone who actually broke their back and ended up paraplegic:
https://www.bikechatforums.com/viewtopic.php?p=2349251#2349251
| Quote: | im not putting down TC's expert knowledge because the bloke's that dealt with me was just that 'experts ' and they was fantasic
but when it came down to why and what had caused me to break my back that was down to the surgeons and the orthopaedic experts and like i said my surgeon told me had i wore one its quite possible i wouldnt be in a chair now [ i dont think anybody can say for sure ]
i dont know what happens in most cases this is just what happend to me
in the last 13 years ive not come across any paraplegic's who have said my back protector is what broke my back and i do meet lots , but in sayin that ive also not met any that say i had one on and still done themself's
most ive met are like me and didnt have one on , but that also doesnt mean there isnt lots out there that are injured because of a protector , just ive not met any |
Personally I stick with the stock foam jobbies in my regular jackets, though I do wear a back protector very similar to the OP's link (also Dainese) with my leathers, as they don't have any integrated back protection. I have a different cheaper back protector, but it's not as flexible, nor as breathable, nor as comfortable all-round, so I've never worn it since.
I will say I've also not yet done a track day, nor crashed on one, nor been hit by a bike like G. In any case, I'd be more interested in a small track with more corners and few if any straights - speed has a decreasing interest to me, it just increases wind blast and the consequences if something goes wrong. Also probably part of the reason why I enjoy scooters so much. I'm also afraid it might take away some of the fun I get from riding on the road, much like two visits to Spain has made Essex that bit worse for me
I second G's advice on Roadcraft - primarily increasing your vision down the road using more and more of the clues at your disposal - though I think they overstate some things. When I went on an advanced riding workshop with Nigel Bowers (AdvancedBiker on youtube), one of the best bits of advice I got was from one of the other instructors in the group, about how the safe bit of road narrows the faster you go. That is, the advanced riding style more or less recommends going around the widest bit of every curve to maximize your vision, but when you're going faster, you need to not go quite as wide to give yourself more margin as you no longer have as much time to adjust to close hazards. ____________________ Bikes: S1000R, SH350; Exes: Vity 125, PS125, YBR125, ER6f, VFR800, Brutale 920, CB600F, SH300x4
Best road ever ridden: www.youtube.com/watch?v=s2MhNxUEYtQ |
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 G The Voice of Reason
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 Posted: 01:45 - 28 Jul 2013 Post subject: |
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As ever, I generally just question. In this case I'm not really seeing any good justification behind the answers.
To me, it still seems to boil down to a bit of "shut up and take my money".
I do also do my research of course - and I hadn't before realised that they were considered quite so useless. I'm impressed that the very standards used to test them also discredit their use.
When I've got a minute, I'll look up the study - it may be the study it's self wasn't well researched.
While back protectors may absorb impact, it seems that doesn't do much usefully as far as protecting your spine.
As ever with armour, it can not reduce force, it can only dissipate it across space and time.
I've had plenty of crashes where I've landed on my back without a 'serious' back protector and never had an issue from that.
I hear an awful lot of anecdotes of medical people saying "you're lucky you had your gear on". However, this never seems to be in any way substantiated. It seems to be just 'something people say'.
Also, I reckon that more nastier accidents happen on slower corners if anything.
At speed, there's less chance of a highside (but a fast highside can be really, really nasty), less other bikes and less chance of a low side from excess power. Less likely to braking hard and deep in to them.
And the vast majority of tracks have plenty of run off on the faster corners (just not where my brakes failed at Lydden, though that was going in to a slow corner).
However, something like minimoto you're relatively less likely to hurt yourself - as you're already on the floor. I say that, then I remember back to when the minimoto place we go to used to be on a tarmac track. Got a nasty knock to the head when it flicked me off - the current place with polished concrete tends to just see you sliding.
Last edited by G on 01:50 - 28 Jul 2013; edited 1 time in total |
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| -Matt- |
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 -Matt- World Chat Champion
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 Posted: 01:48 - 28 Jul 2013 Post subject: |
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Interesting points - particularly the thread, quite harrowing
I've always considered the 'increased' levels of protection i.e level 2 vs level 1 to not really be 'harder' as such but more they're ability to disperse the impact be more efficient. The way [the 2 strap on protectors i've had] were made, were to form a sort of concave 'shell' of armour, so any impact would first crack through this layer if strong enough, THEN the force displace over the back - i suppose though this could be the point at which the 'cracked plate' is forced into the back causing more damage
I'm sure theres definately cases as you mentioned 'rigid' protection actually causes more injuries, i can imagine something similar with an old pair of Sidi boots i had that were buckled and braced to such an extent although they no doubt protect the ankle and lower foot anything mid-leg impact wise would of near sheered it off.
Its very difficult overall i think even with a few cases behind each side of the arguement to really point-black rule out which side of the arguements right or not. I just see it as a 'shell' personally, that i hope will crack before i do, as with the majority of gear i wear.
If the shell fails, or malfunctions and causes injury then i'm still fucked, maybe even more fucked, but the chances the shell reduces or stops damage to me personally i think outweighs the other options. |
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| Fifteen15 |
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 Fifteen15 World Chat Champion

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 kramdra World Chat Champion

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 Posted: 12:26 - 28 Jul 2013 Post subject: |
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Old Thread Alert!
The last post was made 12 years, 301 days ago. Instead of replying here, would creating a new thread be more useful? |
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