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Crank Length on track
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What length cranks do you use for track at Manchester or Newport?
165mm
52%
 52%  [ 40 ]
170mm
47%
 47%  [ 36 ]
Total Votes : 76

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Allister
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PostPosted: Thu Jan 15, 2009 6:09 pm    Post subject: Reply with quote

is this from the same folk that say you can't ride a flip flop hub with two sprockets ?

I am all for evidence based safety measures especially when cycling is a comparativley high risk sport compared to pool, but I do think the risk asssessment process should be made transparent along withthe evidence.

Let the discussion continue....

What about carbon fork columns ?
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BigRobJef
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PostPosted: Thu Jan 15, 2009 7:35 pm    Post subject: Reply with quote

I've got 167.5's but I've also happily ridden 177.5's just got to go fast enough I don't think its an issue with modern low profile pedals.

Having said that once watched a 13 year old 7 stone girl hit her pedal every revolution going just more than walking pace at Calshot. She didn't fall off though.
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sauber
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PostPosted: Thu Jan 15, 2009 10:09 pm    Post subject: Reply with quote

to solve such problems all riders should have their bike checked prior to riding the track like the kids do at track league

yes it would take longer to get a session started but this is needed having seen the idiots that get let on sqts

on this same subject more needs to be done to check all riders are of a sufficient standard to ride the track having passed their accreditation as you are much more likely to be taken out by some fool who can't ride in a warm up line etc or constantly backpedals etc etc than on the rare ocassion when a rider has an illegally spec bike

if we're going to having emails sent round dictating rules to us like this then we also need greater rider ability standards for training sessions/sqts as the accreditation at present is not sufficient to guarantee a rider is safe enough to ride the track
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Last edited by sauber on Wed Feb 02, 2011 5:36 pm; edited 1 time in total
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Billynobrakes
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PostPosted: Thu Jan 15, 2009 10:24 pm    Post subject: Reply with quote

sauber wrote:
to solve such problems all riders should have their bike checked prior to riding the track like the kids do at track league

yes it would take longer to get a session started but this is needed having seen the idiots that get let on sqts

on this same subject more needs to be done to check all riders are of a sufficient standard to ride the track having passed their accreditation as you are much more likely to be taken out by some fool who can't ride in a warm up line etc or constantly backpedals etc etc than on the rare ocassion when a rider has an illegally spec bike

if we're going to having emails sent round dictating rules to us like this then we also need greater rider ability standards for training sessions/sqts as the accreditation at present is not sufficient to guarantee a rider is safe enough to ride the track


What more do you suggest in addition to the current accrediation process and having qulified coaches present at all sessions? Confused

Regarding crank length - I ride 165's but wouldn't think twice about riding 170's, as long as the BB high enough it really isn't an issue on Manchester - your tyres will slide before your pedal hits the deck.
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sauber
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PostPosted: Fri Jan 16, 2009 7:57 am    Post subject: Reply with quote

the coaches are great, just think it needs to be made harder to get the accreditation
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Last edited by sauber on Wed Feb 02, 2011 5:37 pm; edited 1 time in total
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rt
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PostPosted: Fri Jan 16, 2009 8:21 am    Post subject: Reply with quote

I ride an old classic, built way, way before Manchester velodrome was ever thought of.

cranks are 165 but BB height is 10 5/8"
I can ride slow enough for the wheels to be starting to slide with no hint of pedals touching.
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rt
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PostPosted: Fri Jan 16, 2009 8:25 am    Post subject: Reply with quote

[quote="Allister"]is this from the same folk that say you can't ride a flip flop hub with two sprockets ?

quote]

that one does make abit of sense. I had a ticking off for that one. wipped the flip or the flop sprocket off. Job done.
You don't need a spare sprocket on the bike weighing it down Very Happy
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Allister
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PostPosted: Fri Jan 16, 2009 9:48 am    Post subject: Reply with quote

[quote="rt"]
that one does make abit of sense. I had a ticking off for that one. wipped the flip or the flop sprocket off. Job done.
You don't need a spare sprocket on the bike weighing it down Very Happy

quote]

That's true, the 14 grammes saved by removing the sprocket is no longer holding me back.

The point I was asking is what is the reason for having to remove the sprocket ?

Is it to save the weight or is it for another reason and if so what is the reason and what is evidence for it ?

It would be good to know the reasoning behind the requirements.

Back on the cranks topic: I agree that clearance is seldom an issue with 170 cranks on a modern track frame with a reasonable bracket height and narrow pedals.

I have seen riders using 185mm cranks on Manchester and that does reduce the clearance significantly but they still get to race on that equipment as there seems to be no rule saying you can't.

Allister
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mattr
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PostPosted: Fri Jan 16, 2009 9:54 am    Post subject: Reply with quote

Allister wrote:
The point I was asking is what is the reason for having to remove the sprocket ?

Is it to save the weight or is it for another reason and if so what is the reason and what is evidence for it ?

It would be good to know the reasoning behind the requirements.


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billyam998
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PostPosted: Fri Jan 16, 2009 9:58 am    Post subject: Reply with quote

sauber wrote:
the coaches are great, just think it needs to be made harder to get the accreditation

I can assure you from recent experience gaining accreditation is not easy, in fact - it's bloody hard, especially if you choose to do it all in one day Shocked .
Sprockets issue was explained to us as a safety issue risk of getting caught in additional unused sprocket etc, 2 people were made to remove theirs.
Crank length, not really an expert but I can see the logic, also the dings in the banking made by someone on a langster were not good either.
Track is obviously more dangerous than a lot of sports, bob barber and his team are just doing their best to minimise those risks. You are always going to have the "never been a problem for me" brigade, sadly those self same people are the first to complain "why wasn't something done about this" when anything goes wrong.
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highlandpro
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PostPosted: Fri Jan 16, 2009 11:16 am    Post subject: Reply with quote

I only put my 165 on when i go Calshot all other tracks 170.
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Billynobrakes
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PostPosted: Fri Jan 16, 2009 11:56 am    Post subject: Reply with quote

Billy Boy wrote:
You don't need accreditation to race at Mank anyway. I've never bothered.


You can tell Wink
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racyrich2
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PostPosted: Fri Jan 16, 2009 12:16 pm    Post subject: Reply with quote

I got round Calshot on 170s with no problem on Legros trip last year.

Given my frame is fairly venerable (Richard Kennison's from mid 80s) and was obviously built for use with Campag Pista pedals, this is hardly surprising as modern pedals must have more than 5mm more clearance.

P.S. Why did track pedals have the quill missing. It's not the quill that grounds.
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John McC
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PostPosted: Fri Jan 16, 2009 12:21 pm    Post subject: Reply with quote

I grounded my Campag Record Piste pedal at Leicester years ago, on 165mm cranks - modern pedals do give an awful lot more clearance!
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Adman_Rob
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PostPosted: Fri Jan 16, 2009 12:23 pm    Post subject: Reply with quote

Billy Boy wrote:
Billynobrakes wrote:
Billy Boy wrote:
You don't need accreditation to race at Mank anyway. I've never bothered.


You can tell Wink


Oooo bitch! Laughing


What is this accreditation you talk of??

Wink

I've not been accredited and have race at both Manchester, Newport and Calshot...

Tho I can fully understand the need for accreditation for those who are new to track racing or new to short steep tracks. There are many little things you would not think of or know if you just got up there and raced.


I normally use 165's but my current bike has 170's and I've ridden on Newport without any issues. On a proper track bike with modern pedals u should be just fine with 170's.

The problem is that many people assume that the new "fixies" (yest John, fixies) that are on sale the chain stores are track bikes, when most are based on road bike geometry (like the Langster).

Just my 2pence...
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legro
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PostPosted: Fri Jan 16, 2009 12:26 pm    Post subject: Reply with quote

if you have been on private sessions, or raced there its fine, SQT you need accreditation insurance etc
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Adman_Rob
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PostPosted: Fri Jan 16, 2009 12:33 pm    Post subject: Reply with quote

legro wrote:
if you have been on private sessions, or raced there its fine, SQT you need accreditation insurance etc


Yup... I'm aware of that. Problem is I live more than 2 hours drive from both Newport and Manchester so the chances of me getting to a SQT sessions are so slim it ain't worth my while doing the accreditation...

If I lived closer I'd have done it ages ago.

Smile
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John McC
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PostPosted: Fri Jan 16, 2009 12:41 pm    Post subject: Reply with quote

Adman_Rob wrote:
The problem is that many people assume that the new "fixies" (yest John, fixies) that are on sale the chain stores are track bikes, when most are based on road bike geometry (like the Langster).

Just my 2pence...

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PostPosted: Fri Jan 16, 2009 12:57 pm    Post subject: Reply with quote

John McC wrote:
Adman_Rob wrote:
The problem is that many people assume that the new "fixies" (yest John, fixies) that are on sale the chain stores are track bikes, when most are based on road bike geometry (like the Langster).

Just my 2pence...

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Stotti
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PostPosted: Fri Jan 23, 2009 11:32 pm    Post subject: Reply with quote

170 and i aint changin
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