24" or 26" wheel dj bike for 5 ft boy?

PB Forum :: Dirt Jumping & Street
24" or 26" wheel dj bike for 5 ft boy?
Author Message
flag marekt
Posted: Jan 15, 2020 at 16:09 Quote
octane one spark 24" 2013


photo
flag Aaronz25RS
Posted: Jan 16, 2020 at 2:46 Quote
Noice

Crazy to see how long the rear dropouts are though, even picturing it with tires on the wheel.

My Octane1 Zircus the tire is almost touching the seat tube..
flag marekt
Posted: Jan 16, 2020 at 4:55 Quote
Aaronz25RS wrote:
Noice

Crazy to see how long the rear dropouts are though, even picturing it with tires on the wheel.

My Octane1 Zircus the tire is almost touching the seat tube..

I notice that too... I must measure chain stays at home... for 24" frame should be 365mm...
flag cmc4130
Posted: Jan 16, 2020 at 7:23 Quote
https://www.chainreactioncycles.com/us/en/octane-one-spark-frame-2013/rp-prod88381

Octane One Spark Frame
Long smooth tapers added on both chain stays and seat stays give clean look and plenty of thickness to make a strong connection with new smaller and prettier dropouts.

Octane One Spark Frame Specifications:
Material: custom butted 4130 cromoly.
Recommended fork travel: 60-100mm or rigid forks ~420-435mm.
Top tube (physical c-c): 556 mm / 21.9".
Chain stays: 365mm / 14.3" slammed.
Frame size: 278 mm / 10.9".
Compatible with all forks with 1&1/8" (1.125" ) steertube.
Integrated headset (campy spec 45/45 deg, od41.8mm).
Head tube stack: 115mm.
BB shell: threaded euro bb 68mm (compatible with mtb cranks and 3pcs bmx cranks with euro bb).
Biggest chainring: up to ~36t.
MTB hubs spacing (10 x 135 mm).
Tyres: maximum size recommended 24" x2.4".
25.4 mm seat post / integrated seat clamp.
Disk brake only (no v-brakes mount).
Disk brake mount is (international standard), max rotor size: up to 185mm.
3m removable cable guides available separately.
Ultra clean look.
Weight: ~2.55 kg.
flag cmc4130
Posted: Jan 16, 2020 at 7:31 Quote
Aaronz25RS wrote:
Noice

Crazy to see how long the rear dropouts are though, even picturing it with tires on the wheel.

My Octane1 Zircus the tire is almost touching the seat tube..

I know what you mean. I think what's going on is that on 26"s, they're getting the back end even shorter. This is what 14.25" cs looks like with 24"s below.... On the Zircus they're getting 14.9" rather than 15.25".

Like, here's my Union Street Molly Maguire (sold): https://bmxmuseum.com/forsale/173296
photo

similar with the Liquid Feedback 24" with 14.25"cs.
photo
https://ridemonkey.bikemag.com/threads/a-little-late-but-the-liquid-feedback-v2-is-here.265639/
flag marekt
Posted: Feb 6, 2020 at 1:16 Quote
I have 14t driver. 32t sprocket will be ok for 24" wheels?
flag cmc4130
Posted: Feb 6, 2020 at 6:51 Quote
marekt wrote:
I have 14t driver. 32t sprocket will be ok for 24" wheels?

Yes. 32/14 X 24 = 54.8 gear inches.

Approximately 55 gear inches is the "classic" or standard/default in BMX riding and most DJ-MTB bikes.

The default for singlespeed XC MTB on technical trails that involve slow speed climbing and getting over rocks etc. at slow speeds is 52 gear inches.
flag Manniex9
Posted: Mar 3, 2020 at 6:00 Quote
Aaronz25RS wrote:
Noice

Crazy to see how long the rear dropouts are though, even picturing it with tires on the wheel.

My Octane1 Zircus the tire is almost touching the seat tube..

remember that there are no tyres on the rim yet..
flag Aaronz25RS
Posted: Mar 3, 2020 at 8:53 Quote
Manniex9 wrote:
Aaronz25RS wrote:
Noice

Crazy to see how long the rear dropouts are though, even picturing it with tires on the wheel.

My Octane1 Zircus the tire is almost touching the seat tube..

remember that there are no tyres on the rim yet..

I had mentioned that, but no worries
flag Manniex9
Posted: Mar 4, 2020 at 0:38 Quote
Aaronz25RS wrote:
Manniex9 wrote:
Aaronz25RS wrote:
Noice

Crazy to see how long the rear dropouts are though, even picturing it with tires on the wheel.

My Octane1 Zircus the tire is almost touching the seat tube..

remember that there are no tyres on the rim yet..

I had mentioned that, but no worries

Oh yeah. Sorry bro
flag marekt
Posted: Apr 19, 2020 at 4:12 Quote
Thank You guys for support and help!!!
Son's bike is almost finished!
Now we are looking for fork (100mm 9mm axle) and brake (probably avid bb5).

This is how it looks:

octane one spark 2013

 


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