"O.S. have released some info about the successor of the O.S. Speed 21XZ-B spec.II, the new Speed 21XZ-B spec. III at the Shizuoka hobby show. The Speed 21XZ-B spec. III features a newly designed crankcase and piston and cylinder and its displacement still remains at 3.49 cc (and not as 3.46cc like the Speed B2101). The engine head is 5mm lower than spec.II for lower gravity. Last improvement, the 3-port exhaust makes air flow effective after combustion. It will be available alone or as a combo with the T-2060SC (EFRA2042) tuned pipe. Shipment start in August."
-From NEOBuggy.net

Ohhh now this is some thing I have my eye on.

Apparently the spec 3 is going to be an extra long stroke like the lep zz.21c.can anyone confirm this and wgat the stroke is going to be.i read somewhere about a 17.2mm stroked speed a while back.that sure would be sweet

Spec details

stroke volume: 3.49cc
bore: 16.27mm
Stroke: 16.8mm
Output: 2.65ps / 34,000rpm (2.61 hp / 34,000rpm)
practical rotational speed: 4,000 ~ 42,000rpm
weight: 353g

Hi Andy what does the 2.65 ps stand for? I couldnt get a straight answer from Hobbico on what that refers to!

1 PS = 0.986320072712 HP

It's the German equivalent to horsepower

Hey Bash bros thanks for the info. so I wonder if the xzb blue ver two will get discontinue next I have one of these and its a great motor.I cant really afford a spec 2 or a b2101. but I dont need to go that fast

PS stands for Pferdestrke (literally, 'horse strength').

HTH

When is this motor Goin to be available? When they announced the motor it said august but I haven't heard anything else about the spec 3 since then

USA maybe sept

..

I've been looking for one for a while finally found them in rcjapan. Combo with the 2060. $425 + shipping

Sorry not allowed to post url

Shipped this morning:

PM me the link.. And how much was shipping?

Thank you

I only see the spec 2

http://store.pro-s-futaba.co.jp/inde...ducts_id=38595