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Project Ayla's 1st Mountain Bike

3934 Views 50 Replies 28 Participants Last post by  mountaingoatepics
Kind of a X Post from Families and Riding with Kids

My oldest, Ayla, has been riding a 16" Fugi SS Bike for the past two years and the last 4 months with the seatpost at the minimum insertion mark. I've had her on some relatively easy trails such as Bear Creek Lake Park and the Stonehouse Trails in Lakewood. She's been asking me for a real mountain bike for the past year and finally I found a 2008-2009 model Scott Jr Scale 20 on the local Craigslist. It was in descent shape and the price low enough that I could be happy investing some coin to make it the bike she and I wanted,

The original bike

The Original Bike

Sanded and stripped

stripped bare

Rattle can painted with a fade ...Aqua to Metallic Blue...10 coats of clear and 3 coats of Turtle Wax Ice

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Downtube

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Toptube

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Seattube/ toptube junction

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Headtube

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The Fork with asymetrical two tone

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One of the issues I had with the Scott Scale Jr 20 is the 42x34 chainrings that are basically press-fitted on the crankset. I live in Colorado and we have a few small hills here and there and want a little easier gear for my girl to push.

I took her original cranks and cut off the large chainring and cut the 34 tooth chain ring leaving a "spider". I then measured and drilled out 104 bcd bolt spacing on the "spider" and mounted a 32 tooth Surly ring and a bash-guard I had laying in the parts bin.

The original crank and rings

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modified crank...the original bolts that held the inner ring on were stripped and seized. I drilled them out and used some stainless bolts and nylon locking nuts to reinstall the cut "spider". The nuts clear the frame by about 3 mm which works for the size of the holes, 3/8's in diameter but add some weight. I'm looking into better solutions.

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Its off dead center by a mm or two but biopace was cool once right? :D

Actually, I'll be going to a machinist soon to have him make me a better "spider" but this one will hold until I can get it made.

And I finally finished the bike today. She loves it and is riding really well for her 1st geared bike with hand brakes. The X3 trigger shifter was the was to go!

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the long cage rear derailleur is admittedly a little long but it'll do till I can find a medium cage replacement

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The 7 speed IRD freewheel is a thing of beauty...better be for $45

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The lock on grips will eventually be replaced with the 30mm ESI silicone Racer Grips

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just so happened to have a pink Chris King headset that wasn't seeing any use

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Avid Single Digit 3R's for the stoppers

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Almost two months in the making and a very happy girl as a final result. Weeeeee!!!

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Mods so far...

Pink Chris King Headset
Avid single Digit 3 V Brakes
Shimano UN55 Bottom Bracket
Bontrager SX 20x2.00 tires
Race Face Evolve 26.8 Seatpost
Easton 50mm stem
Truvativ Hussefelt 2 inch riser bars
Front and rear wheel axles taken apart and repacked with grease
Upgraded from 2x6 (easiest gear was 34x28) to 1x7 (easiest gear is 32x32)
Pink cable housing shifter and brake housing
Sram X3 rear derailleur and trigger shifter
IRD 7 speed 13-32 freewheel (originally 6 speed 13-28, went with IRD due to no huge jumps between gears..13, 15, 17, 21, 24, 28, 32)
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Please tell me you clear coated it! Looks good, and would be a shame if it got chipped.
Please tell me you clear coated it! Looks good, and would be a shame if it got chipped.
10 coats of clear and 3 coats of Turtle Wax Ice :thumbsup:
Great work. Won't be long until another goat can drop me like a bad habit. lol
VERY COOL! I hope to build something similar for my little girl one day :).
:thumbsup::thumbsup::thumbsup:
JSD303 said:
Great work. Won't be long until another goat can drop me like a bad habit. lol
Thanks!
This might hold this one up this season. Broke the 4th metacarpal in my hand on the Colorado Trail last weekend. Silly boulder I've climbed a 100 times, this time it was wet and slippery. I'm gonna try to ride the road bike tomorrow maybe. Switched the brake levers so the left hand grabs the rear brake. Even if it does work out, I'll be off the MTB for at least 4 weeks.

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Looks great, and she looks really happy. Nice job!

Enjoy this time with her. They grow up quickly. My last project involved new speakers and a new water pump in my little girl's JEEP.
Looks great, and she looks really happy. Nice job!

Enjoy this time with her. They grow up quickly. My last project involved new speakers and a new water pump in my little girl's JEEP.
Thanks man!! And I will!! This happened just in time as my 4 year old graduated from a strider to her 1st pedal experience ever last night on her older sister's old bike!!! Do those baggy clothes make me look fat?:p

Great looking bike! She should really enjoy it.


Dave
Thanks!
This might hold this one up this season. Broke the 4th metacarpal in my hand on the Colorado Trail last weekend. Silly boulder I've climbed a 100 times, this time it was wet and slippery. I'm gonna try to ride the road bike tomorrow maybe. Switched the brake levers so the left hand grabs the rear brake. Even if it does work out, I'll be off the MTB for at least 4 weeks.

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D'oh! I broke my right arm/wrist a couple times as a kid. I have better hoops handles and a sweet left-handed shot because of it. I'd still put my money on you in any race, though, even with that busted wing! lol Heal up fast, so you can prove me right.
Nice! I don't know if it's a standard bottom bracket, but I've got an old square tapered Bontrager crankset in my parts bin. They're 175mm cranks so I don't know if it's ideal, but you're welcome to it.
Nice! I don't know if it's a standard bottom bracket, but I've got an old square tapered Bontrager crankset in my parts bin. They're 175mm cranks so I don't know if it's ideal, but you're welcome to it.
PM sent. :cool:
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Nice job on the bike dad! I have 2 daughters and they went through 20" and 24" bikes in about 3 years. Now I have two 20" and two 24" bikes in the basement. I guess I should put them up for sale.

Too bad about the break. I had the same thing. Pinkie knuckle will never be the same. Doc said not to ride. After looking at my cast and the way my 3rd and 4th fingers were pointing down, I thought it would be pretty bad to crash and have to put a hand down! Had to ride a trainer for about 6 weeks. Not fun.

-Chuck

Thanks!
This might hold this one up this season. Broke the 4th metacarpal in my hand on the Colorado Trail last weekend. Silly boulder I've climbed a 100 times, this time it was wet and slippery. I'm gonna try to ride the road bike tomorrow maybe. Switched the brake levers so the left hand grabs the rear brake. Even if it does work out, I'll be off the MTB for at least 4 weeks.

P1070797
That's a great project and she looks like she loves the bike. Get well soon. I banged my self up pretty bad last year. Just be positive and it'll work out.
Thanks!
This might hold this one up this season. Broke the 4th metacarpal in my hand on the Colorado Trail last weekend. Silly boulder I've climbed a 100 times, this time it was wet and slippery. I'm gonna try to ride the road bike tomorrow maybe. Switched the brake levers so the left hand grabs the rear brake. Even if it does work out, I'll be off the MTB for at least 4 weeks.
Cool bike.

I would keep the working hand on the front brake though even for trail riding.
Great job! My daughter just graduated from her 16" wheels to her first 20" wheeled bike... she's still a little sketchy on hand brakes and gears, but the smile on her face is priceless.

Hope the hand heals up quickly
Sweet build MGE!

My kid is running a stock 06 hotrock, fully rigid six speed. He loves it, as some of you saw on the EM T.I.T.S. ride. We rode it again yesterday and extended the ride over to the A3S side before finishing. Big smiles on both of us when we returned home.

Ink.
Mods so far...

Pink Chris King Headset
Avid single Digit 3 V Brakes
Shimano UN55 Bottom Bracket
Bontrager SX 20x2.00 tires
Race Face Evolve 26.8 Seatpost
Easton 50mm stem
Truvativ Hussefelt 2 inch riser bars
Front and rear wheel axles taken apart and repacked with grease
Upgraded from 2x6 (easiest gear was 34x28) to 1x7 (easiest gear is 32x32)
Pink cable housing shifter and brake housing
Sram X3 rear derailleur and trigger shifter
IRD 7 speed 13-32 freewheel (originally 6 speed 13-28, went with IRD due to no huge jumps between gears..13, 15, 17, 21, 24, 28, 32)[/QUOTE]

This is impressive!!! Great Job!
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I'll check when I get a chance and let you know.

Ink
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