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Help Needed for Kids Xmas Bike Modification


PatMc
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Urgent advice from bike experts needed please.

My son has bought his 5 year old daughter her first bike for Xmas. He's been advised to remove the pedals as a first stage in teaching her to ride the bike.

Taking only the pedals only off seems easy but it would leave the crank arms in place which could be a bit of a nuisance.

Can the cranks also be removed without having to remove the chain & sprocket ?

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It is unlikely that the cranks can be removed without also removing the chain, etc. . If the main chain-ring and the crank on the opposite side are removed, there is the likelihood of the bearings falling out and dirt getting into hole.

If the child is still learning to ride, it might be a better option to get a "balance bike". . These are superb bikes with no pedals and a low seat position so the kid can use their feet to "run" whilst on the bike. . It doesn't take them long to learn how to balance, and then she can graduate to a bike with pedals. yes

B.C.

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If you remove the crank and spider there will be nowhere for the chainring to attach to, so that would have to come off as would the chain. If you have the right tools this is easy, if not then you will prob need a bike shop (crank removal is not a job that should be bodged with the wrong tools). Once removed you would also need to tape over the BB to stop dirt getting in there.

Personally I would just remove the pedals and see how she goes, my daughter had no problems with doing that (you can always immobilise the crank with a cable tie round the chainstay; probably best done on the non-drive side).

Edited By MattyB on 10/12/2019 13:01:25

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I think removing the cranks and bottom bracket is an excellent idea to help a child learn to ride. I know I learned on our large backyard which had a gentle slope just freewheeling my fairy cycle.

You will certainly need to remove the chain (it wraps round the chain stays) which is easy with the appropriate tool if there isn't a split link. Cranks and bottom bracket are also quite easy to take off but again suitable pullers are needed. I'm sure a bike shop would do the job for a small charge - or for nothing if you'd bought the bike there.

I have all the tools and I'd gladly do it for you but I live in Derbyshire which is a bit far from you

Geoff

PS most (all?) bottom brackets on full size bikes are sealed units these days (probably on childs' bikes, too) so there'll be no likely hood of getting dirt in.  They still fit in the standard British bottom bracket shell (watch out for the LH thread on the LH side) so there's no problem with loose steel balls and cups and cones as a few years ago.

Edited By Geoff Sleath on 10/12/2019 13:14:27

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Several quite different views here!

Personally I - we -found no problem teaching our kids to ride bikes with the pedals attached, They had all had a tricycle to play on first which may have helped a little.Typically all three were happily away with less than a couple of days's of help - holding the saddle lightly from behind to add stability, then running up and down our quiet cul de sac.

First one at five,the other two younger, since younger kids are always desperate to catch up.

So personally I 'd say you are over-complicating. By all means add trainer wheels or take the pedals off if you must. Other than that, keep it simple., Kids are keen to learn, and learn fast! Hope your grandchild has fun...

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Posted by Geoff Sleath on 10/12/2019 13:07:16:

(watch out for the LH thread on the LH side)

Geoff, I know you are a biking man, so I am hesitating to comment on this. But I think the "odd" (LH) thread is on the RH side, to avoid the pedal unscrew from the crank when its bearings run heavy.

Max.

Edited By Max Z on 10/12/2019 15:15:32

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Posted by John Bisset on 10/12/2019 13:30:44:

...So personally I 'd say you are over-complicating. By all means add trainer wheels or take the pedals off if you must. Other than that, keep it simple., Kids are keen to learn, and learn fast! Hope your grandchild has fun...

Stabilisers seem to have gone right out of fashion for teaching kids - I'll leave you to decide whether that is because they are genuinely less effective for kids learning, or if it's because the industry would rather sell you a balance bike instead...

PS - One thing that is a huge step forward is the fact that you can actually buy decent, lightweight kids bikes now with good geometry. Isla, Frog et al may be expensive, but the difference between them and the old "Halfords hack" machine that is seemingly constructed from lead is night and day. Best of all they actually retain a lot of their value too. There is also a new line from Go Outdoors that is apeing the premium brands with light weight frames and kid specific geo and parts at a lower price (Wild Bikes).

Edited By MattyB on 10/12/2019 15:38:55

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Posted by Max Z on 10/12/2019 15:13:52:
Posted by Geoff Sleath on 10/12/2019 13:07:16:

(watch out for the LH thread on the LH side)

Geoff, I know you are a biking man, so I am hesitating to comment on this. But I think the "odd" (LH) thread is on the RH side, to avoid the pedal unscrew from the crank when its bearings run heavy.

Max.

The pedals on both sides are designed so they unscrew when you pedal. This might seem illogical, but if they tightened in the direction you pedal you'd never get em off! This is why I always use some anti-seize on the threads, that way you can torque it up that little bit harder safe in the knowledge it will always come off (admittedly I don't have carbon cranks though).

Guide to removal, and there are lots of good Youtube vids on the subject too including this one from King Calvin of Park Tool fame...

Edited By MattyB on 10/12/2019 15:37:16

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Geoff was talking about the bottom bracket shells not the pedals.

Both the bottom bracket and pedals have one LH thread and one RH thread - that is unless the bottom bracket is "Italian" in which case both bottom bracket sides have a RH thread, my Colnago's have "Italian" bottom brackets and over tens of thousands of miles the bottom brackets have never come loose. These days there a lots of different types of bottom bracket/crank systems each with different tool to remove.

For the pedals …. if you put a spanner/allen key on/in them and the chainset freewheels then it means you are trying to unscrew, if the bike tries to move forward then you are tightening them. Righthand side pedal is RH thread and left side is LH thread.

It's slightly confusing because for some pedals you use a spanner around the base of the pedal axle so you are turning it as you would expect for that thread but some use an allen key inserted into the axle from the "rear" of the crank so it seems like you are turning it the opposite way - if that makes sense.

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Posted by Max Z on 10/12/2019 15:13:52:
Posted by Geoff Sleath on 10/12/2019 13:07:16:

(watch out for the LH thread on the LH side)

Geoff, I know you are a biking man, so I am hesitating to comment on this. But I think the "odd" (LH) thread is on the RH side, to avoid the pedal unscrew from the crank when its bearings run heavy.

Max.

Edited By Max Z on 10/12/2019 15:15:32

You're right Max, my mistake. It's the fixed cup on the RHS that's LH thread on British bottom brackets. I really don't think it's necessary but, like a lot of things cycling, it's something that dates back over 100 years and difficult to change.

I did once have a left pedal unscrew whilst riding a newly built tandem. Fortunately we were going slowly up a steep, short bank and my foot, pedal attached didn't cause a problem as it hit the road; my stoker pushed us over the brow without my help

One thing I always did before flying with the bikes on holiday was make sure the pedals were free to undo for loading onto the aeroplane. That was back in the days when we cycled to the airport, stripped the bikes enough to satisfy the carrier, put the panniers and camping gear in a big cloth bag and enjoyed the flight. Not possible now.

Geoff

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Thanks to all who have offered advice. thumbs up

As mentioned the bike has already been purchased, it's a good condition S/H one that's the correct size for my granddaughter.

The idea is to use it in the manner Brian Cooper described, using a "balance bike". Once sh'e learned to maintain balance we'll refit the pedals.

I spoke to my son today & we've decided removing the cranks might be a bigger problem than first realised so we're leaving them in place.

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The danger of leaving pedals on is that if the child isn't using pedals, he/she gets their legs caught around them and comes off, or at least gets bruised/grazed. It is particularly unpleasant if its on the Achilles tendon, which may put the youngster off having another go for a while, not to mention grief from Mum.

A quick check on Gumtree showed 512 balance bikes nationwide for less than £20. Add in Friday-Ads, Preloved, Ebay and car boot sales, and there's a massive selection of used ones going for a song.

For the sake of £20 or less, of which you will get most of back when its done its job, definitely get a balance bike!

Once the child does move up to the bike with pedals once they have sorted out balance, the other thing that is useful, is a 'parent pole' which clamps on to the top of the seat stays  or saddle stem and sticks out back and up. It allows you to hold on as they get started.  You can relax your grip on it once they are balancing themselves and the child won't notice, so doesn't panic.  It also allows you to act as brakeman if they're heading for the neighbour's new car!


 

 

Edited By Robin Colbourne on 13/12/2019 20:46:35

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I removed the pedals without any problem but left the cranks. Plan is now to see how she gets on using it as a balance bike in that state. I don't envisage her taking long to be pestering her dad and me to re-fit the pedals.

BTW it was never our intention to use stabilisers - it's analogous to teaching someone to fly a model using a Junior 60 then having to re-teach on an aileron equipped trainer.

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Why take the pedals off? Are you not teaching confusing fundamentals, not resting feet on pedals?

Seat down and the child can paddle with their feet aka balance bike, but then they spend hours and hours perfecting balancing and stopping with their feet.

If you are going straight to a normal bike leave the pedals on and the seat at the correct height. Support the child by holding their back/solder and get them to balance, brake and dismount. Just keep walking/jogging up and down until they can balance, brake/dismount without peddling.

Then just get her to peddle a bit, then a bit more and before you and she knows she will be cycling on her own and able to stop!

PS Gloves an absolute must IMHO, saves picking the gravel out or their hands....

PPS - Stabilisers - the invention of the devil, just more grief later on...

Edited By Chris Walby on 14/12/2019 06:49:24

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Posted by Phil Green on 13/12/2019 21:11:17:

Hi Pat, I'm with Paul & Alex - at 5 she should be riding properly, no stabilisers

Our bike racing club starts Juniors racing on minimotos at six years old, quite a few are girls..

Thanks Phil. My son, 4 years old(?), first bike, 5 metres there and back and the stabilisers were taken off and he was away riding. The only problem, after playing football all primary school age and riding to school, took to bike racing, road in winter, track in summer. He now coaches. I stuck to touring, long distance at times. His sister, 12 years old, did a loaded tour, 480 km multiday ride over the mountains. She'd done a few years of riding on the back of a tandem before that. Back from the tour and and a few weeks later an annual one day 100 km ride over the steep hills we have here.

Question for PatMc, do you think you will be able to keep up with them as they get older?

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