gummibear Posted May 9, 2014 Share Di2 on a kids' bike? DIY upgrade to a Trek Superfly 20in The Trek Superfly 20in kids' bike is a popular choice among young riders. It's not available in the UK, but it recently scored highly in a 20in kids' bikes round-upconducted by BikeRadar Australia and some junior test riders. While our young test riders loved the bike, their main complaint was with the gear shift quality, an issue that affects most geared kids bikes.So what if there was unlimited budget? Electronic gears! In practical terms, the price is enough to stop it being a reality, but electronic gears make lots of sense for children who lack the hand strength to shift easily.This led Mark Rowling, owner of Sydney-based Turramurra Cyclery to build his six-year-old son something special. The store has a reputation for building often extravagant Pinarellos, and this Trek is certainly in a similar league. Rowling took a stock Trek Superfly 20 and turned it into a AU$2,999 (approx £1,658) mini dream bike. http://cdn.mos.bikeradar.com/images/news/2014/05/09/1399532080375-1nwjxr36qcobi-670-80.jpg Edited May 9, 2014 by gummibear Link to comment Share on other sites More sharing options...
gummibear Posted May 9, 2014 Share Ultegra Di2 would have worked just as well, but Dura-Ace just ensures few are going to copy this!Obviously the biggest upgrade is the Dura-Ace 9000 11-speed Di2, but it wasn’t just a matter of slapping on a new shifter and derailleur. To fit the 11-speed cassette, the rear hub was replaced with a matching Dura-Ace hub and laced back to the stock rims.The shifter is a R660 Di2 Climbing shifter using E-tube wiring technology. With two buttons on a single pod, it offers the lightest action shifting on the market.http://cdn.mos.bikeradar.com/images/news/2014/05/09/1399532166671-gyr2ja8mtofy-500-70.jpg Link to comment Share on other sites More sharing options...
gummibear Posted May 9, 2014 Share A Pinarello Di2 adaptor and a drill – that's how this battery was mountedThe Di2 wiring has been routed internally; Rowling drilled into the frame (goodbye warranty!) and then secured the battery to the down tube with a Pinarello adaptor plate and heavy-duty adhesive tape.With a quick-release on the back, the front has been replaced with a matching Dura-Ace skewer too.To further drop the weight and improve the aesthetic, the stem is slammed and the steerer cut flush.http://cdn.mos.bikeradar.com/images/news/2014/05/09/1399532273337-s33smdx1p8qz-500-70.jpg Link to comment Share on other sites More sharing options...
gummibear Posted May 9, 2014 Share This Superfly 20in was also give new tyres and brakesThe brakes on kids bikes often leave a little to be desired and so have been replaced with Shimano’s DXR levers and V-brake callipers, something from the company’s performance BMX racing range.The stock cranks remain, with few options available in the 140mm length. To drop a little weight and improve the chainline, the bottom bracket was replaced with a higher-end square taper unit. Further reducing weight and increasing the speed is a pair of 20in Schwalbe Durano slick tyres.http://cdn.mos.bikeradar.com/images/news/2014/05/09/1399532372043-1mw60vp2v6bpu-500-70.jpg Link to comment Share on other sites More sharing options...
gummibear Posted May 9, 2014 Share A Bontrager XXX bottle cage. Well, why not?Completing the build is a Bontrager XXX bottle cage, something that alone costs more than any department store bought kids' bike.With the bike weighing in at 7.9kg, it doesn’t sound as though this project is over yet. Rowling is keen to drop the weight some more, and with the saddle, seatpost, stem, handlebars all stock there’s plenty of space to bump this one well above its current AU$2,999 price too. http://cdn.mos.bikeradar.com/images/news/2014/05/09/1399532372044-12058tr0o09qg-500-70.jpghttp://www.bikeradar.com/gear/article/di2-on-a-kids-bike-diy-upgrade-to-a-trek-superfly-20in-40968/ Link to comment Share on other sites More sharing options...
Tumbleweed Posted May 9, 2014 Share Turramurra? That's the shop where Andrew Armstrong got his genuine pina. Link to comment Share on other sites More sharing options...
gummibear Posted May 9, 2014 Share Think you right Link to comment Share on other sites More sharing options...
Fisan Posted May 12, 2014 Share £1,658 for a kiddies bike!? Then again, saw a 10-year old on a carbon stumpy 29 today... Link to comment Share on other sites More sharing options...
Jacques Potgieter Posted May 12, 2014 Share A Pinarello Di2 adaptor and a drill – that's how this battery was mountedThe Di2 wiring has been routed internally; Rowling drilled into the frame (goodbye warranty!) and then secured the battery to the down tube with a Pinarello adaptor plate and heavy-duty adhesive tape.With a quick-release on the back, the front has been replaced with a matching Dura-Ace skewer too.To further drop the weight and improve the aesthetic, the stem is slammed and the steerer cut flush. http://cdn.mos.bikeradar.com/images/news/2014/05/09/1399532273337-s33smdx1p8qz-500-70.jpg I bet that little electronic pod lasts no longer than 3 rides in the place where it is mounted Loose cog and mrbaker 2 Link to comment Share on other sites More sharing options...
jimmy hardtail Posted May 12, 2014 Share I bet the spoilt kid leaves it out in the rain then gets electrocuted. Naah im just jealous, want one for my daughter! Link to comment Share on other sites More sharing options...
gummibear Posted May 13, 2014 Share Pretty sure it's more a show bike and the kids only gets to look at it. Link to comment Share on other sites More sharing options...
Lord Catapult Posted May 17, 2014 Share I would rather buy this. It just looks so sporty. Iwan Kemp 1 Link to comment Share on other sites More sharing options...
Lord Catapult Posted May 17, 2014 Share The best thing is they didn't fit a suspension fork because they couldn't find one that is of a high enough quality. Link to comment Share on other sites More sharing options...
Mr X Posted May 17, 2014 Share Kids do not care about bling like this. Kids are very easy to please, but in general kids bikes are very very heavy. Link to comment Share on other sites More sharing options...
ACM Posted May 17, 2014 Share I bought my son a momsen 24" (jsl24 i think) with air shock and it weighs 10.3kg. Lightest bike I could find and I'm super pressed with it. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now