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  1. #1
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    My son's builds in progress.

    Just thought I would share pics of my 6yr old sons bikes.

    Specialized Hotrock Pro20
    So far:
    Azonic pedals
    Azonic grips
    Carbon seat post
    Serfas seat
    Green Qu-Ax Cross 20" x 2.5" tires (His idea...LOL)
    My son's builds in progress.-dsc_0002-2-.jpgMy son's builds in progress.-dsc_0003-2-.jpgMy son's builds in progress.-dsc_0007-2-.jpgMy son's builds in progress.-dsc_0008-2-.jpg

    I was going to sell it, and go to a 24" (like his Fat Bike)....but decided to keep it, because I'm also transitioning him to clipless this year. The smaller bike will be easier for him to learn on....especially in the trails.

    Installing a new crank and ring this week. Machine shop in trimming down something special for me. So we will see if it works.
    Getting carbon bars, stem...and will be putting the stock tires back on and going tubless.

  2. #2
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    24" Farmed Mini-Sota

    Avid Hydraulic Brakes
    Purple Rim Tape
    Purple Diety Bars
    Purple Diety seat post
    Azonic Pedals
    Raceface 36T Ring and Bash Gaurd
    Serfas Seat
    My son's builds in progress.-dsc_0236-2-.jpgMy son's builds in progress.-dsc_0001-2-.jpgMy son's builds in progress.-dsc_0002-3-.jpgMy son's builds in progress.-dsc_0004.jpgMy son's builds in progress.-dsc_0090-2-.jpg

    Getting a 32T purple ring
    Going tubless
    Ordered new 50MM stem

  3. #3
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    Awesome!!!

  4. #4
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    Nice Ride!

    This is an awesome bike! I have a few questions...
    What did you do for a front chain ring size? My son's 20" hotrock (2014) came with 127mm cranks which is fine but not for a 50 lb kid who needs to spin a 36T chain ring. Fine geometry and all but I need to install a 30 or 32T chain ring in the front... but the crank set is one piece...

    Was thinking about incorporating either SpawnCycles 127mm cranks and installing new Bottom bracket... BUT if you go to Sinz bike... bmx line where there are multiple options for crank arm lengths.

    Thanks and I look forward to hearing from you.

    Craig



    Quote Originally Posted by Gorman View Post
    Just thought I would share pics of my 6yr old sons bikes.

    Specialized Hotrock Pro20
    So far:
    Azonic pedals
    Azonic grips
    Carbon seat post
    Serfas seat
    Green Qu-Ax Cross 20" x 2.5" tires (His idea...LOL)
    Click image for larger version. 

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    I was going to sell it, and go to a 24" (like his Fat Bike)....but decided to keep it, because I'm also transitioning him to clipless this year. The smaller bike will be easier for him to learn on....especially in the trails.

    Installing a new crank and ring this week. Machine shop in trimming down something special for me. So we will see if it works.
    Getting carbon bars, stem...and will be putting the stock tires back on and going tubless.

  5. #5
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    I'm pretty sure they have the same size cranks, and it's definitely the one piece set-up.
    I'm having my buddy at a machine shop I deal with machine down a set of Shimano Zee cranks I had laying around (off my Krampus when I upgraded). With the flat surface on the back, I should be able to got to about 135mm with no issues. I will run these with the appropriate BB.

    This way I can change rings from 32 (for trails and hills) to 36 for flat canal path riding.

    My son's builds in progress.-20150220_105346-1-2-.jpg

  6. #6
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    Carbon 600mm bars for the Hotrock Pro 20

    My son's builds in progress.-dsc_0001-2-.jpg

  7. #7
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    New carbon seat post for the Hotrock.

    Stock vs Carbon

    My son's builds in progress.-dsc_0071-2-.jpgMy son's builds in progress.-dsc_0072-2-.jpg

  8. #8
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    Nice Build on the HotRock. My son had a great time on one of those - back in the day when they came with V-brakes

  9. #9
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    Love it. I am a big believer in quality equipment, and if your kid(s) love to ride then why not make their experience the best it can be?

    My 7yo and his bike - 2005 'Team' Scalpel, small frame, 10.5kg with pedals. He is tall for his age! so a 26" was appropriate. Photo makes him look bigger than he is, he is still growing into it, but can manage it pretty well.


  10. #10
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    Well.....my little guy is officially clipless now. Can't wait to see how his climbing improves in the trails.

    My son's builds in progress.-image.jpgMy son's builds in progress.-image.jpgMy son's builds in progress.-image.jpg

  11. #11
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    Well....now I have a new plan in regards to my son's Hotrock build. I'm putting the pro20 back to stock, and selling it. I just got a gently used Hotrock 24 (2013) from my good freinds for a couple hun. It's a xxs 24" (11" frame), so the standovers are pretty much identical !

    I was considering getting him a Trailcraft 24, but with the parts I already have, and for the price I got this for.......I'm positive I can build him this a bit lighter and for a lot less.


    Planned mods:
    Strip and coat frame.
    Shimano Zee cranks cut to 138ish and BB (from my Krampus)
    carbon bars and seat post (from hotrock pro20)
    stans crest 24" 24H with tubeless Rocket Rons
    thinking 1X11 (road cassette)
    CX 24H disc hubs.
    SLX hydro brakes (installed from previous owner)
    80mm Rockshox SID 26er fork (used)
    eggbeaters (from hotrock 20pro)

    Soooooooo......lets begin

  12. #12
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    2014 Hotrock 20 Pro VS 2013 Hotrock 24 XC disc (xxs)

    Side by Side pics
    My son's builds in progress.-dsc_0045-2-.jpgMy son's builds in progress.-dsc_0047-2-.jpgMy son's builds in progress.-dsc_0048-2-.jpgMy son's builds in progress.-dsc_0049-2-.jpgMy son's builds in progress.-dsc_0050-2-.jpg

  13. #13
    Back in NH
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    If your son is already rocking the Mini-Sota than he can definitely make it work on a 26 inch bike. Lots of $ in 24" wheels that will only last a year or two. I have had my 9 year old on a 12.5" Giant with 26" wheels and a rigid (non susp corrected) fork all of last summer as well as the fall before. He is about 51-52" tall. I have skipped the suspension fork in favor of keeping the front end low for both stand over and handlebar height. The bigger wheels really stepped up his trail ability and allow him to get over much rougher terrain. He has raced our local weekly series for the last two years and the bigger bike was a huge step up.

    At less that half the weight of a grown adult we have also opted for some lower volume light tires that help with stand over and can still be run at less than 20psi.

    We are also enjoying our Mini-Sota and it definitely fits bigger than his 26 inch bike.

  14. #14
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    I know what your saying man.....and totally agree in regards to dollars, but my sons not tall enough yet. He can ride a 26er I'm sure.....but he won't be able to ride as aggressive as he likes too. Although he rides the mini-sota well.....it's too big for him standover wise, and the only reason he can enjoy it....is because riding in the snow/sand isn't aggressive since we don't jump or go really fast like on technical trails.
    I'm actually trying to find a deal on a 9:zero:7 xs frame, so I can swap the Mimi-sota parts over....so he has a fatbike that he can ride a bit more aggressive as well.
    I also want to keep him riding clipless since he's already got that down on his 20" hotrock.

  15. #15
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    So, I stripped the 24" hotrock down today to get the frame stripped and coated.....but I took some weights to get a baseline. Man...are the components on these things heavy...LOL!!!

    The bike was 27.8 lbs when I got it with minor mods (bash guard in place of the biggest ring, lighter seat post, different stem and bars, and slx brakes instead of tektro).

    Front wheel with tire and tube and brake disk = 1679g
    Rear wheel (the same way with 8spd cassette)= 2242g
    Broken down:
    Tire (specialized fast trak sport) 24X1.8 = 532g each
    24X150-75 tube = 156g each

    Stripped 11.5" Frame = 1339g (2.95lbs)
    Fork Suntour SF12 XCR LO24 = 2018g (4.45lbs)
    160mm Cranks, BB, and 2 Rings (32/22) = 1152g (2.54lbs)


    My son's builds in progress.-20150317_115944-2-.jpgMy son's builds in progress.-20150317_123019-2-.jpgMy son's builds in progress.-20150317_123055-2-.jpgMy son's builds in progress.-20150317_123152-2-.jpg

  16. #16
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    Hotrock 24 Build is progressing.

    Got a new Magura TS8 R DLO≤ 100mm Fork (3lb's)

    Stans crest 24" -24h front and 32h rear

    Sram 32H XO rear hub (going to do a 1X11)

    Got his frame powder coated gunmetal metallic to match me Krampus!
    My son's builds in progress.-20150401_233307-2-.jpgMy son's builds in progress.-20150401_235454-2-.jpgMy son's builds in progress.-20150402_001048-2-.jpgMy son's builds in progress.-dsc_0001-2-.jpg

  17. #17
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    Nice! That is a 26" fork, right? What is the axle to crown length? Have you reduced the travel on the fork?

    You could get it under 19lbs for sure with that fork.

  18. #18
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    Correct, 26" 100mm fork. Didn't do anything except unbox it so far....lol. Came aired out and depressed with a zip tie binding the legs and crown. I might drop it to 80mm.

    I'm aiming for 20lbs hopefully....and trying to stay under $1500.00

  19. #19
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    Well, while I'm waiting for parts for the Hotrock, I decided to sell the Mini-sota fat bike, and build him a fat bike with a lower standover. On paper, the 9:zero:7 has a lower standover, but with the 26" wheels, it's actually about an 1" higher than the mini-sota. So, I think I'm going to build him a set of 24" wheels for the 9:zero:7 (which kind of sucks because it has through axles front and rear )....which should work out great.
    My son's builds in progress.-dsc_0372-2-.jpg

  20. #20
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    Quote Originally Posted by Gorman View Post
    I'm pretty sure they have the same size cranks, and it's definitely the one piece set-up.
    I'm having my buddy at a machine shop I deal with machine down a set of Shimano Zee cranks I had laying around (off my Krampus when I upgraded). With the flat surface on the back, I should be able to got to about 135mm with no issues. I will run these with the appropriate BB.

    This way I can change rings from 32 (for trails and hills) to 36 for flat canal path riding.

    Click image for larger version. 

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    Cranks are finished (not coated/painted yet). My guy did an awesome job...took them down to about 138/40mm.

    My son's builds in progress.-20150415_154341-2-.jpgMy son's builds in progress.-20150415_154528-2-.jpgMy son's builds in progress.-20150415_154626-2-.jpgMy son's builds in progress.-20150415_154630-2-.jpgMy son's builds in progress.-20150415_154649-2-.jpg

  21. #21
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    Parts coming in piece by piece....LOL!!

    Loaded Signature X-lite headset! Not bad @71g including star nut inside!
    My son's builds in progress.-20150417_150950-2-.jpg

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