2 Stroke - 2013 KTM 250 SX (with a sad ending)
Вставка
- Опубліковано 4 лют 2025
- ENGINE
Design 1-cylinder 2-stroke engine, water-cooled, with reed intake and exhaust control
Displacement 249 cm³ (15.19 cu in)
Bore 66.4 mm (2.614 in)
Stroke 72 mm (2.83 in)
Starting aid Kick starter
Gearbox 5-gear, claw shifted
Primary transmission 26:72
Secondary ratio 13:48
Clutch Multidisc clutch in oil bath/hydraulically activated
Ignition Contactless controlled fully electronic ignition with digital ignition adjustment, type Kokusan
CHASSIS
Frame Central tube frame made of chrome molybdenum steel tubing
Fork WP Suspension Up Side Down 4860 MXMA CC
Shock absorber WP Suspension 5018 BAVP DCC
Suspension travel Front 300 mm (11.81 in)
Suspension travel Rear 317 mm (12.48 in)
Brake system Disc brakes, brake calipers on floating bearings
Brake discs - diameter Front 260 mm (10.24 in)
Brake discs - diameter Rear 220 mm (8.66 in)
Chain 5/8 x 1/4"
Steering head angle 63.5°
Wheelbase 1,495±10 mm (58.86±0.39 in)
Ground clearance unloaded 385 mm (15.16 in)
Seat height unloaded 992 mm (39.06 in)
Total fuel tank capacity, approx. 7.5 l (1.98 US gal)
Super unleaded gasoline (95 octane), mixed with 2-stroke engine oil (1:60)
Weight without fuel, approx. 96.3 kg (212.3 lb.)
o shit haha i have typed 2012 it sould be 2013 thnx
you have a nice channel !
Thanks, you're a great rider!
Pro tip to people reading the comments here: if you buy a KTM that is jetted for 60:1 and you add more oil to your gas mix you're going to be running leaner if you don't change your jets. Don't blow your bike up because someone used to a different brand of bike says you're doing it wrong.
My rm250 was ment to be 32:1
50:1 safe on the engine (with decent oil) no plug issues I did it like that for years the best bike I ever owned. that was the what I used on the track.
Scrub riding hour after hour I mixed 40:1
That's a 2013 fender I see
What happened at the end there ?? That bike looks like it rips up btw
didnt your hear that the bike wasnt running very good?
it even says it on the ktm site... 1:60 look it up!
1:60?
Why so lean on oil?
This isn't the fault of the KTM, all bikes blow top ends be it run too long, or just too lean!
Bud 60:1 is way too lean they are jetted from the factory too run 40:1! Gonna keep grenading the top end running 60:1 even if you play with the mixture and jetting. 40:1 and a fouled spark plug is better than 60:1 and a blown bike
They are jetted from the factory at 60:1. KTM's run way leaner than the japanese bikes.
and this is why you dont run 40 or 50 to 1 oil....
40:1 works fine, probably depends on what kind of oil, my yz125 has had no problems on 40:1 even when it's 90-100 degrees out on a sand track
***** aside from the fact that 32:1 will USUALLY last longer plus idk about my 250sx and 150sx but my old 112(105sx) actually made more power at 28:1 than any other mix on a dyno, so I stick with more oil just to be safe.