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BH2006

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Hi all.

I don't post much here, but since I basically got the idea to build my daughter a custom MTB from other MTBR users who had done the same, I thought I'd share. I'm a fairly avid mountain biker - get out as much as I can. I've been riding some easy trails with my 10-year old daughter, but she struggled with her 30 lbs 24" Cannondale not-quite-a-MTB bike. It's suitable for pedaling around the neighborhood, not so much single track. I considered getting her one of the nicer, kid-specific MTBs - maybe a TrailCraft or Transition Ripcord. But after reading here about some of the great builds based on the TideAce FM-M001 frame, I decided to go that route. I was pretty sure I could put something together that was lighter and for about the same cost as some of the nicest kids MTBs out there (and I'll admit, I work in the bike industry and have access to some pretty good pricing - especially on wheel components). In the end, I still probably went a little overboard trying to get this thing under 20 lbs. But once that seemed doable, I shot for 19 lbs. Finally ended up at 18.4 lbs (with pedals and sealant), and that was only because we couldn't get first choice of heavier tires to set up on the Crest rims. The Rocket Rons worked - and came in lighter than expected. I probably could have pushed it under 18 lbs (titanium bolts, I9 hubs and titanium spokes...) but this thing was already kind of ridiculous!

Shoutout for the nice people at TideAce: great service, fast delivery, well-packaged, weights right on target, and beautiful product. Chameleon paint job was a little darker than I expected, but still very nice and my kid loves it.

Anyway, here's the build:

TideAce FM-M001 14” Frame
TideAce Handlebar – 660mm
SuperCaz Siliconez Grips
Wake Stem
TideAce Supplied Headset
Unbranded Carbon Seatpost
SDG Component Fly Jr. Saddle
RockSox Factory Float 26” 100mm QR
SRAM NX Crankset – 155mm
AEST Ti Axle Pedals
North Shore Billet ChainRing 28t x 94mm BCD
SRAM GXP BB
SRAM PC X1 Chain
SRAM GX 11sp Shifter
SRAM GX1x11 Long Cage RD
SRAM XX1 XG1199 10-42t
SRAM Guide RS Hydraulic Brakes
Campy AFS CLD Rotor – 160mm
Stans 24” Crest Rims – 24h f/r
Bitex BX106 Front/Rear CenterLock Disc Hubs
Pillar PDB1416 Spokes
Sapim Polyax 14mm Alloy Nipples
Schwalbe Rocket Ron 24x2.1 Tires
Orange Sealant
Titanium QR Skewers

Total weight (w/pedals): 18.4 lbs

My daughter is just on the cusp of being able to ride 26" wheels, so we'll rebuild these when she's tall enough. But the 24s work perfectly right now and look just fine. I expect the frame will last her into high school - and when she outgrows it, I'll just put the components on another $300 carbon frame. The weather here has been kind of lousy since Christmas, so we've only done some gravel roads - most of the local trails have been closed. But man can she move on this bike! She had struggled with even small climbs, but now should be able to handle most of what's on offer here in central NC.

Anyway, to everyone here who did this before me and shared their builds, thanks for the inspiration!

(Oh, and for the record, Annika always wears a helmet - this was just a quick spin on Christmas morning around the driveway - a photo op really!)
 

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I considered a dropper, but I'm just not sure she's ready for or needs one - or at 68 lbs is heavy enough for one.
That bike deserves one! Looks like the frame uses a 31.6 seat tube? All the KS Lev models in that size and several of the TranzX models have a schrader valve under the seat clamp that you can use to adjust the air pressure. My 50 lb kid uses a Lev no problem.

IMVHO opinion, droppers are just as, if not more, important on HTs so that you can take full advantage of your biological suspension. You simply cannot descend, or even pump flat terrain, properly with an extended seat. A QR clamp may be sufficient depending on your local terrain, but if you're stopping to raise/lower more than 1-2x/ride the dropper is so worth it even for the kids. I was so happy I put one on my kid's bike.
 
I think putting a dropper on a kids bike is the next worst thing after getting them an e-bike

"You simply cannot descend properly with an extended seat" seems way exaggerated, can't hear that after riding the trails in Finale for 20years on dropperless bikes...Way before it became a cool bro-enduro destination.

NOw my kid is riding some of the easier stuff with his 24'' islabike hardtail.


OK sorry for the rant, I have to find a way to balance my mood during bad weather;)
 
Develop good habits early...learn to ride without sitting.

Of course, you don't need a dropper to do that if you're willing to bury a fixed post and live with it.

If you've got the seat at a proper height for pedaling and you're in the chunk, you've got a bad habit developing...
 
Yeah if you aren't dropping the kids seat significantly and your kid is shredding, you are putting the kid needlessly at risk. Our kids mtb coaches (race with Minnar on EWS course) would give you an earful and not let the kid ride with the team if the seat was up at near pedaling position. If the kid is just light riding stuff it's no big deal I guess. My 6yro isn't the best on his team and he was hitting 6ft drops, 3ft huck to flats and clearing/casing gaps this summer. Some DH races too. Can you imagine the carnage if I kept his seat high? Lol. Plus on a drifted corner he can get his foot down if it gets too loose/muddy for his speed. When he screws up in the air on a goofy whip and lands in a rodeo, he'll drop a foot once in a while to stay upright. All ER potential trips. Imagine when he is on a 24" and airtime/drops/Gnar is that much bigger. Drop that seat for downhill man. No advantage to keeping it up on the downhill. Fwiw a dropper is nice to have because kids don't have the hand strength to adjust a quick release (my 6 now 7yro doesn't) and a Lev Integra does work for his 58lbs. Otherwise myself or a coach have to do it for him, not always pragmatic.
 
Droppers are great, but when my kids are still learning to shift properly I think they can wait. Especially for XC riding. Though my kids are usually timid riders. Only recently has my oldest started to pick up speed/confidence (which I am super psyched about!!). Her next bike will have a dropper for sure though. Right now both girls are on 20".
 
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