Scott Spark RC 24 with mods
I finally got this bike finished after working on it for over a year.Its an incredible XC & Downhill bike for the little guys/girls.Had alot of the parts from older bikes already.
Frame: 2010 Scott Spark RC JR 24"
Bottom Bracket: Race Face Ti 107mm
Brake Levers: Tek Pro
Brakes Rear: Scott Pro
Brakes Front: Scott Pro
Cables/housing: XTR (have white XTR Yumeya I will be installing)
Cassette: XT 11-32
Chain: KMC X-10 SL
Crank Set: Middleburn RS-7, 160mm
- Crank Arms:
- Crank Bolts: SRP Ti
- Outer Ring: BBG Bashguard
- Middle Ring: Middleburn Aluminum hardcoat 32T
- Inner Ring: Middleburn Aluminum hardcoat 22T
- Ring Bolts: A2Z aluminum
Derailleur Front: Deore
Derailleur Rear: XTR 970 low normal mid cage with Aluminum and Nylon bolts
Fork: Rock Shox Sid Race carbon 80mm with custom v-brake adaptor
Handle Bar: Easton monkey lite carbon riser cut down to 25”
Headset cap bolt: Scott cap with aluminum bolt
Headset spacers: J&L Ti
Pedals: Wellgo WR1 with Ti axles and skateboard tape for more grip
Quick Releases: Front = J&L Ti Bolt on, Rear = Mavic SLR Ti QR
Rear Shock: X-Fusion Air shock with adjustable rebound damping
Seat Binder: Scott QR with Ti bolt
Seat Post: Thompson Elite with KCNC upper yokes and Ti bolts
Stem: Carbon Cycles carbon stem 60mm
Tire Front: Chen Shin
Tire Rear: Chen Shin
Wheel Set (entire): Stock
- Rims: Alex Ace 20
- Spokes: Scott
- Nipples: Scott
- Hub Front: Scott RC
- Hub Rear: Scott RC
Misc. Options: All bolts have been changed to aluminum, Ti, nylon
I was building my wife and I new bikes and had ordered a pile of Ti & Aluminum bolts so he got the scraps.
May go with Eclipse tubes when the 24" version comes out.I was going to get some MowJoe tires @ 420 grams, but when I weighed these huge knobbed CST tires I was shocked they were both only 500 grams each, I thought they would have come in well over 600 grams each.We often are riding in mud so these tires have worked very well.
4 mods I made to this bike really helped his riding in technical single track and/or downhilling.
- Sid Race fork with dual air,adj. rebound, compression damping.
- Wide riser bar (this also made a huge difference on his hardtail)
-Low normal rear deraiileur ( way faster down shifts,especially under a load)
-Light Middleburn 160mm cranks.
Wow, that looks amazing! Thanks for the detailed report and pictures.
Riding slowly since 1977.
Where did yo find that shock?
My son has the Spark 20 and I am trying to find a 125mm or so air shock - where did you find yours?
That is the stock X-Fushion 02 air shock.I measured it & its 125mm eyelet to eyelet, so it should work on the Spark 20". Someone on here with a Spark 24 was looking at getting a Rockshox or Manituo air shock ( maybe msimmons ?).Not sure if they have the size you need, but bikewagon.com has great prices on Rockshox Monarch air shocks.
Originally Posted by bugger
Originally Posted by bugger
Give me a call @ the X-Fusion Office and I can get you one of these cute little guys. I have about a handful of stock on them.
USA Sales/Service Mgr.
USA Sales & Service Mgr.
Pain is only temporary but Glory is FOREVER!!!!!
Sweet build. That's the way all kids bikes should be.
How much do you recon you've got wrapped up into it?
Too bad we can't buy something like this production....
Its a shame we can't even buy a stock Spark RC jr 24 anymore.
I would guess including the price of the bike $2500.00 cnd. Considering he's does very well on adult rides where we are climbing in the Rockies for 1 to 1 1/2 hours before descending for an 1 hour & everyone in the group is riding $5000.00 plus bikes, it was money well spent. He's growing slow so he will get 3 years out of this bike.Shouldn't have to much trouble selling it when he's done with it or pass it down to his sister.
Yes, 26". You can see the adaptor to relocate is V-brake posts.
Bike looks amazing. Can quite tell from the pictures. Could you run disc brakes on the back.
Originally Posted by rideitall
Yes, It can run discs front & rear, however the V-Brakes work excellent on this bike & the wheelset is very light with the Scott RC hubs & the Ace 20 rims.Most disc hubs would be way heavier unless you pony up for Extralite hubs @ $900.00.
how tall and heavy is he and how much air pressure do you have the shocks set with?
He is 4' 6" and 68 lbs.
Originally Posted by surftime
Rear shock = 50 psi.
Sid fork = 50 psi in pos. & Neg. chambers.
Running a good amount of rebound damping front & rear, helps keep those little wheels from pogoing & swapping in the root clusters & rock gardens.The suspension works incredible on this bike at these settings. If he's heading towards big jumps/drops he will turn the dail on the top of the right fork tube to increase compression damping for the hard landings.
The bike fits him perfect right now, so will get one more year out of this bike. Also have lots of room to stretch out the riding position.Stem is all the way down ( no spacers under)
& is only 60mm length.
The 26" wheel fork raised the front end slightly but had no negetive affects on climbing. The increased head angle did help with stability bombing down mountains.
I think your boy is ready for a XS 26 frame which means I can buy this bike, right?
2012 Niner Jet 9 RDO (Tang, XTR groupo)
2011 Giant Reign 2 (XT groupo)
Still small for his age, so still room to grow on this bike.He's got at least one more year on this one.
Originally Posted by duffin
Great bike! More like a piece of art!
What is the lowest you can get the seat on a 24" Spark Jr? My son is six years old and 4'1" and I am trying to decide between a 20" or a 24"
Thank you. The seat is 28" all the way down, this with a 26" fork so slightly lower with a stock fork.My son is 4 6" & when the seat height is set correct for XC riding he has 4 3/4" of seatpost showing.I would go for the 24", seems like it would fit him & those bigger wheels roll over rough terrain better.
Originally Posted by Shakeandbake
the magical question: does anyone know of a Scott Spark RC 24 for sale out there...
would suit my little boy well (:
KMC X-10 SL chain on a 9 speed cassette?
? how does the KMC X-10 SL chain work on (what i believe to be) a 9 speed cassette ?
is it smooth?
ps. i'm thinking of running a 1x9 scenario on my little man's Soctt Spark