OP
Squashfest81
Well-known member
Slappy, liking the purple Bianchi!
Keep us in the loop on the build.
Keep us in the loop on the build.
I just finished my latest kids bike. The kids keep growing and keeping me busy. This is my 6th, but first MTB for 6yo. Custom down to the custom rear hub and cranks. Tubeless tires. 5 speeds. 14lb ready to ride.

Squash ..... I think the saddle swap will be a good choice. Couldn't put my finger on it, but the specialized saddle just didn't suit the build. Also, never seen a plastic BBracket before! What were they thinking
Jack ..... Some impressive custom work there. Would like to see more of the detail in those cranks. Curious if you've done full scale ones and how the weight compares to mass produced arms.
Jack ..... Some impressive custom work there. Would like to see more of the detail in those cranks. Curious if you've done full scale ones and how the weight compares to mass produced arms.
I only make parts that I can't buy. So there's no reason for me to make full-size cranks. And if I did, there's no way they would be any stronger/lighter than modern hollowed/forged/carbon/whatever commercial cranks. My hobby is biking, not making parts that I could buy off the shelf or scrounge from my parts bin or Goodwill bikes. You can't buy cranks light and narrow enough for the kids bikes I want to build so I have to make them. For say a 115mm version, the complete weight of the cranks (crankarms, spindle, bearings, and BB cups) is about 250g. That's less than a Shimano UN55 BB weighs by itself. And a steel threaded BB shell by itself weighs like 150g, where the mini cranks can use a little press-fit BB shell that weighs 40g.
Jack, what is it about kid's BMX cranks that don't work? I know 135mm is standard on "mini" size race bikes. I've seen other manufacturers produce them smaller than that. "LDC" is a local company to me that produces them from 110mm on in 5mm increments. Definitely cool that you make your own, just wondering what the fitment criteria is that off the shelf parts don't fit?
Can't wait to see you work on that! Awesome project!Ambenz, my father dragged me to Cape Cod to save this Surrey. He tells of renting one on a date with my mother 45 years ago.
It’s a project to say the least, but will be a fine addition to his beach trike fleet. Should tow boats nicely too! ...
Slappy, that all looks interesting and I’ll need a minute.
As you know, I like to try things and see what can work.
Decided to order a cheap 9 speed cassette 11-42 to put on the 29er project. I’ve got a shifter and derailleurs.
No go on my 700c hybrid wheels as they are all 7 speed. I’ve got road 709c’s, but they are just too thin.
Fine, toss it on the Stumpy as that may go 1 by. Well, it’s all on and tight. Time will tell if it will all clear.
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This guy popped up on Craig’s yesterday and we struck a deal.
I’ve always been drawn to Stumpjumpers. I would rather a hard tail, but this guy is retro awesome!
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