quade

I've figured out my current rims on the Momsem JSL40 are AlexRims DP21 According to this https://alexrims.com/wp-content/uploads/2020/02/2020-Alexrims-China-Cambodia-Catalog-DIGITAL.pdf They are 390grams per rim Thanks Two wheels for your link I see the MK3 24 is 295grams (assuming 24 holes) https://www.notubes.com/crest-mk3-rims and the mk4 is 323 grams https://www.notubes.com/crest-mk4-rim The no doubt stronger mk4 version is R2,750 for a 67gram saving (134 grams for 2 rims) so for R5,500 I get to save 134 grams by upgrading the rims @Jewbacca seems to be on the money here, its the hubs that are the issue I think I might look at lighter hubs and spokes, just means I cannot sell on the existing wheels

I have 150 mbit up and down on frog foot back bone using fibre wireless with static IP in Somerset If you don't have any family with you then the lourensford groups are a good place to network and join riders, you cannot ride alone there. Plenty for 3-4bar I assume you don't need a 4 bedroom Stellies is expensive but is a good investment Good to be spoilt for choice !

Which crank did you get ? And what was the length ? These are my latest purchases Crank - 155mm with 30T ring https://a.aliexpress.com/_Euzs4U1 Forks - 100mm 24" (1.6kg) https://a.aliexpress.com/_Evc9ied I didn't know about using spacers on a 26" fork, that would have probably been more sensible !

Now I'm just.annoyed I missed out on these

That is very kind of you thanks The local shop is pretty cheap and very skilled at wheel building so going to get a quote from them on a full set first I stumbled across this 20/24".full sus bike/frame.which you probably already know about https://tiny-rock.com/products/20carbon-ds-frame?pr_prod_strat=e5_desc&pr_rec_id=7a36b9cc6&pr_rec_pid=7110703153344&pr_ref_pid=7121562992832&pr_seq=uniform

Married? Kids? How old are you? We did an international move to Somerset West and live next to lourensford, they are restricted on days which is annoying...loads of other places to ride nearby Your season of life is an important factor for your choice

Interesting I will see if I can find out how much the Alex rims weigh, switching the hub and spokes will be less painful, I could just de-lace the wheel and figure it out from there, but a big task if I decide to switch the rim and have to rebuild! A hub and spokes switch might just do the trick So you have a 7.2kg 20" rigid mtb? That is impressive ! Mine is slightly over 8kg with aluminium frame. 24" is a headache 26" is super easy, AliExpress have Mavic crossmax wheel set for around 2k, they are around 1680g for the 2, sadly nothing in the 24" Loads in 20" due to the Asia folding bike market

Thanks Bike dad's is an excellent site, but a bit USA focused and hard to get the components but great resources It actually has the Alex rims on already, I wonder how light they are compared with crest rims, I could just switch out to lighter spokes and hubs if marginal The new air 100mm forks at 1.6kg should help a lot.... Will wait for them to arrive and test

Wise words, they have always had high end kids bikes like Isla Bikes, his current bike is 8kg, but the new one is 12.3kg, and he just struggles to lift it as he's quite weedy, it's more about not putting them off than winning, and finishing and enjoying riding rather than struggling to handle a lead weight I spent my youth racing MTBs in the UK trying to keep up with my bro who was the UK MTB champion back in the day, I want to give my kids the opportunity to enjoy biking as much as I did I also really enjoy tinkering with their bikes ...it's therapeutic for me Regarding the cranks, I just bought a set of goldix cranks from AliExpress, very light and lots of kiddy sizes available

The current hubs are lead weights and feel like sand paper so will be charging these out as well so it's a new build, and since I'm starting from scratch I figured I'd do it properly 32 will work but will be heavier and you don't need 32 for 24" wheel on XC .... Enduro and jumps are a different story. If there is an option, I'd rather get lighter

Hey all My kids are racing in the Western Cape schools league, I bought a new bike for one of them, it's the lightest available but still horribly heavy, so I'm switching out the forks and trying to find light wheels I can find a 32 hole rim but for XC racing a 24 hole rim will be fine ( he doesn't jump) Any ideas where to find the rim so I can kick off a wheel build project ? Alternatively are there any other light weight rims or wheel sets in 24" available ? Thanks Mark

I've just ordered a set of these for my 9 year old: https://www.aliexpress.com/item/1005005335472302.html I went for the 155mm crank with a 30T chain ring and BB They do lengths from 110mm upto 160mm Its only around 550grams so not bad, and cheap at approx $50 Downside is they will take a long time to arrive, I didn't fancy paying the same price again just for fast postage and although they have good reviews, I'm still cautious. It amazes me they put 175mm cranks on kids bikes, they are simply way too long. If you want to figure out what crank length your kid should be running there is a rough calculation: height (in CM) /10 +0.5 That will give you the crank length in CM so if your kid is 150cm tall 150/10 +0.5 = 15.5 CM (a crank length of 155mm) Read this article for more info https://kidsracing.co.uk/blogs/bikes/kids-bike-components-framesets-cranksets Remember to use a smaller front chain ring, I went with 30 but I deliberated 28 I'll run a 1x12 (11-51) setup on a XS 26er frame, so that should give him plenty of uphill granny gear range. The obvious problem is these kids grow quickly at this age, so I need to see him ride as he grows to figure out if I should move to a 160mm in future, one you get to 165mm, there are plenty of main stream crank options available, but under 165mm they are as rare as rocking horse poo

Thanks This link seems to have some interesting info https://thebikedads.com/kids-cranks/

Following this thread Is there a rough guide on age/height and crank size ? My 12 year old is riding 175's and was looking at shorter options Not sure how small they go off the shelf ?

Thanks all The bike rack from VW is meant to live on the car and you pull it down when you want to use it, and you can operate the boot when bikes are on without any adjustment so the convenience of that was super appealing, but the price wasn't The other suggestions look good, especially if there is a 6 bike version (assuming the rack is quick to fit) I'll add these to my consideration list