Gear Checks - Young Riders

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Chrisbro
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Joined: Mon Feb 07, 2011 2:23 pm

Gear Checks - Young Riders

Postby Chrisbro » Mon Feb 07, 2011 3:14 pm

Seeking any technical guidance for setting up junior rider.

My son Conall entered one of the Hillingdon Circuit Races recently and we came across the requirement to restrict younger riders gearing. Conall, growing rapidly, has recently moved on from his near perfect Islabike Luath to a bargain Specialised Allez 24 road bike and an event bigger bargain Specialised Crux Elite (thanks to LeisureWheels). As bargains we took them as they were but we have now discovered the need (which we fully support) for gear restrictions to stop younger riders pushing too big a gear. On the day the officials let him ride but we need to sort both bikes for future.

The Allez comes with Shimano 2300 set up and 52 x 42 x 30 chainwheels with Shimano 8 spd cassette 13-26. Looks like from British Cycling and various fourms we need to restrict this to 46 as biggest chain wheel and limit the smallest cog on the rear cassette.

Easier on the Crux as already FSA omega 46 x 36 on chainwheel but will need to replace cassette as its Shimano 9 speed, 11-32 and minimum allowed is 14 and not sure limiting will work with last 3 cogs, 11-13!

Anyone come across this with junior riders before ? :idea: Have found out you can buy a 14-25 cassette but not found a 46 chain wheel yet.

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Paul Thomson
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Re: Gear Checks - Young Riders

Postby Paul Thomson » Mon Feb 07, 2011 5:54 pm

What sized wheels are they? If normal 700C size, then 48 x 16 is normally used I think? So long as the tyres are not huge.
A rollout measurement of top gear - one pedal revolution should be a max 6.45metres for a Youth B rider (Under 14 - that is Conall's group I think?). A 48t chainring should be easier to find. And then get a 50 for the next age group up... Pretty sure you can get 16 up Shimano Ultegra cassettes, and 15 up too.
Certainly screwing off a normal cassette is not going to work very easily - even if you pull through the cable to prevent it going higher.

Gear checking is one thing we Commissaires have to do - and early season races are where we need to remind the riders of the max gearing as many are new (like yourselves) or have moved up and didn't check or know what it was.
If you need any help with checking the gearing let me know.

Paul
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Chrisbro
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Joined: Mon Feb 07, 2011 2:23 pm

Re: Gear Checks - Young Riders

Postby Chrisbro » Tue Feb 08, 2011 11:03 am

Thanks Paul...std 700c wheels, just normal tyres. Discovered Spa Cycles do good range of different sizes of Stronglight chain rings (including the 46t) and cassettes to suit so have some parts on order..will see how it goes! :) Chris

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Paul Thomson
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Re: Gear Checks - Young Riders

Postby Paul Thomson » Tue Feb 08, 2011 11:40 pm

Yes, Stronglight and TA chainrings can be bought from a load of places and they do just about all versions of chainring sizes and compatabilities with Shimano (130bcd) and Campag (135bcd) and others too (compact for most makes is 110bcd).
Definately do a rollout test before forking out loads of cash on chainrings and cassettes though... remember 6.45 metres in top gear for one pedal rev - it will get checked at races!

Speaking of races, there are youth races at MK Bowl in March - 5 March and 19 March (which also clashes with the first Hillingdon races), plus the ones at Hillingdon (19 March that clashes with MK Bowl, 26 March and 2 April).
All have mens races too Chris... :wink: Actually the MK Bowl ones have novice races, so very suitable.

Paul
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Chrisbro
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Joined: Mon Feb 07, 2011 2:23 pm

Re: Gear Checks - Young Riders

Postby Chrisbro » Wed Feb 09, 2011 7:22 pm

Aiming to enter a few more events after my debut in cyclo cross last year...only have to wait until my fractured shoulder heals - out a few weeks ago on training ride with Conall on canal tow path in sleet & rain and front wheel slipped on some ice / mud and managed to find the only peice of concrete on tow path for miles with my shoulder :oops: Only 6 weeks to go before it is healed and I can drive again.

Chris

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Paul Thomson
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Re: Gear Checks - Young Riders

Postby Paul Thomson » Wed Feb 09, 2011 7:25 pm

:shock: Ouch - I didn't know that, sorry to hear. A number of people have come off on ice in recent weeks - since Christmas/New Year when people got more enthusiastic and were too keen for their own good! :o

Paul
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