R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro Off-Road > Offroad Nitro Engine Forum

Reply
 
Thread Tools Search this Thread Rate Thread
Old 11-16-2012, 10:06 AM   #1
HH
Tech Addict
 
HH's Avatar
 
Join Date: May 2009
Location: So Cal
Posts: 734
Trader Rating: 3 (100%+)
Default NEW OS MAX .21XR-B

[IMG][/IMG]

Machine ground fins on the cooling head looks awesome!
It appears O.S. has eliminated the mid-adjustment and gone with a 2-needle carburetor system.

Specifications: O.S. MAX .21 XR-B

Displacement:..... 3.49cc
Bore:................ 16.27mm
Stroke:............. 16.8mm
Practical RPM:.... 4,000~40,000 r.p.m.
Power Output:.... 2.45hp / 33,000 r.p.m.
Weight:............. 370g

compared to..

Specifications: O.S. SPEED .21 XZ-B

Displacement:..... 3.49cc
Bore:................ 16.27mm
Stroke:............. 16.8mm
Practical RPM:.... 4,000~40,000 r.p.m.
Power Output:.... 2.6hp / 34,000 r.p.m.
Weight:............. 355g

Available early 2013...?
__________________
KYOSHO MP9 TKI3 | O.S. Speed XZ-B .21 ~ O.S. 2090 | KO Propo RSx

"If it's worth doin'... it's worth doin' it right" - Chip Jett
HH is offline   Reply With Quote
Old 11-16-2012, 02:13 PM   #2
Tech Regular
 
CKmaxx's Avatar
 
Join Date: Sep 2005
Location: Sask, Canada
Posts: 391
Trader Rating: 1 (100%+)
Default

Looks like a budget model....
__________________
Xray XT9
Powered by FX Engines
CKmaxx is offline   Reply With Quote
Old 11-16-2012, 04:35 PM   #3
Tech Fanatic
 
Join Date: Jan 2010
Posts: 795
Default

19,950 works out at 245 usd or 192 euros.
Lots of engines at that price range. I think they'll have to sell it cheaper.
Eivind E is offline   Reply With Quote
Old 11-18-2012, 03:40 PM   #4
Tech Apprentice
 
Join Date: Oct 2011
Posts: 51
Trader Rating: 1 (100%+)
Default

o.s. was rumored to revert back to the short stroke design.... i guess not. really disappointed in this new design. is that a plastic fuel nipple on a two needle carb? the extra machining on the cooling head edges makes it look cheap and picco-like. and why does it only have one carb retainer? does the screw thread staight into the block instead of the other carb retainer half now?
__________________
dont crash, dont break, dont flameout=1st place
tmth3 is offline   Reply With Quote
Old 11-18-2012, 05:41 PM   #5
Tech Master
 
Rsickles's Avatar
R/C Tech Elite Subscriber
 
Join Date: Aug 2010
Posts: 1,278
Trader Rating: 19 (100%+)
Send a message via AIM to Rsickles
Default

Quote:
Originally Posted by tmth3 View Post
o.s. was rumored to revert back to the short stroke design.... i guess not. really disappointed in this new design. is that a plastic fuel nipple on a two needle carb? the extra machining on the cooling head edges makes it look cheap and picco-like. and why does it only have one carb retainer? does the screw thread staight into the block instead of the other carb retainer half now?
Only one screw on each side holding the block in! Guess you only use two screws to secure the engine too.
Rsickles is offline   Reply With Quote
Old 11-18-2012, 08:28 PM   #6
Tech Adept
 
Paulus's Avatar
 
Join Date: Aug 2005
Location: Netherlands
Posts: 235
Default

This is the new basic model, placed under the XZ-B blue head we will have to wait a bit longer for the new Speed engines.
__________________
Teamdriver for: MugenSeiki, MBX7, MBX6-TR, OSspeed engines, Power-Safe-Racing fuel, JVDrc clutches, Sanwa/ Savox electronics.
All the way from the Netherlands :)
Paulus is offline   Reply With Quote
Old 11-18-2012, 08:47 PM   #7
Tech Apprentice
 
Join Date: Oct 2011
Posts: 51
Trader Rating: 1 (100%+)
Default

even if you compare it to the base model (blue head) xz-b, it doesnt stack up, .05 less peak power and 8 grams heavier.
SPECIFICATIONS
Stock Number: OSMG2050
Displacement: 0.21 cu in (3.5 cc)
Bore: 0.6 in (16.3 mm)
Stroke: 0.7 in (16.8 mm)
Practical rpm: 4,000-40,000
Output: 2.51 hp @ 33,000 rpm
Weight: 12.52 oz (362 g)
(base xz-b specs)
__________________
dont crash, dont break, dont flameout=1st place
tmth3 is offline   Reply With Quote
Old 11-19-2012, 01:51 PM   #8
Tech Fanatic
 
Join Date: Sep 2009
Location: Alabamastan
Posts: 956
Trader Rating: 34 (100%+)
Default

Quote:
Originally Posted by tmth3 View Post
even if you compare it to the base model (blue head) xz-b, it doesnt stack up, .05 less peak power and 8 grams heavier.
SPECIFICATIONS
Stock Number: OSMG2050
Displacement: 0.21 cu in (3.5 cc)
Bore: 0.6 in (16.3 mm)
Stroke: 0.7 in (16.8 mm)
Practical rpm: 4,000-40,000
Output: 2.51 hp @ 33,000 rpm
Weight: 12.52 oz (362 g)
(base xz-b specs)
It's not supposed to "stack up". It's a low(er) budget engine.
BrakeTurnAccelerate is offline   Reply With Quote
Old 11-19-2012, 02:06 PM   #9
Tech Apprentice
 
Join Date: Oct 2011
Posts: 51
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by BrakeTurnAccelerate View Post
It's not supposed to "stack up". It's a low(er) budget engine.
the xz-b blue head is their "budget" engine now. why would they downgrade on an update. so in my eyes, yes it is supposed to stack up. the only thing justifying these lower specs would be fuel consumption, but even then i think i would rather have a little more grunt than 30 seconds more run time. this engine looks like an absolute joke. i like the older v-spec engines. i was hoping this new engine would be a fusion between the vz-b and xz-b
__________________
dont crash, dont break, dont flameout=1st place
tmth3 is offline   Reply With Quote
Old 11-19-2012, 03:32 PM   #10
Tech Master
 
Rsickles's Avatar
R/C Tech Elite Subscriber
 
Join Date: Aug 2010
Posts: 1,278
Trader Rating: 19 (100%+)
Send a message via AIM to Rsickles
Default

Quote:
Originally Posted by tmth3 View Post
the xz-b blue head is their "budget" engine now. why would they downgrade on an update.
I don't think you realize what you are talking about. The regular XZ-B is NOT a 'budget' engine. The 21VG(P) is their 'budget' .21 engine.

Look at the market. For the price of a XZ-B it is competing with the Werks B6, B5 Pro, Alpha Lutz Edition, Alpha A852/A872, Nova Plus 21-4, Nova P5 XLT, RB Fire, Fusion X3, some of the Picco-based engines, GO GXII-5, etc.

The XZ-B is a performance engine, not a budget engine.
Rsickles is offline   Reply With Quote
Old 11-19-2012, 03:34 PM   #11
Tech Fanatic
 
Join Date: Sep 2009
Location: Alabamastan
Posts: 956
Trader Rating: 34 (100%+)
Default

Quote:
Originally Posted by tmth3 View Post
the xz-b blue head is their "budget" engine now. why would they downgrade on an update. so in my eyes, yes it is supposed to stack up. the only thing justifying these lower specs would be fuel consumption, but even then i think i would rather have a little more grunt than 30 seconds more run time. this engine looks like an absolute joke. i like the older v-spec engines. i was hoping this new engine would be a fusion between the vz-b and xz-b
$280 for an XZB isn't really "budget", when you figure that there are a ton of engines $200-250 range. The XRB is listed for $245 (as someone posted above) and will likely sell a good bit lower than that, price-wise.
BrakeTurnAccelerate is offline   Reply With Quote
Old 11-19-2012, 04:24 PM   #12
Tech Apprentice
 
Join Date: Oct 2011
Posts: 51
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by Rsickles View Post
I don't think you realize what you are talking about. The regular XZ-B is NOT a 'budget' engine. The 21VG(P) is their 'budget' .21 engine.

Look at the market. For the price of a XZ-B it is competing with the Werks B6, B5 Pro, Alpha Lutz Edition, Alpha A852/A872, Nova Plus 21-4, Nova P5 XLT, RB Fire, Fusion X3, some of the Picco-based engines, GO GXII-5, etc.

The XZ-B is a performance engine, not a budget engine.
i know exactly what i am talking about! for the typical o.s. consumer(me) the xz-b (blue head) is indeed a budget engine. you are connecting price point with performance. i never said the xz-b wasnt a performer, i said it was a budget engine. the alpha lutz, werks b2, nova p5, picco 5tr, rb f11 are all budget engines, doesnt mean they dont perform. you see what im saying now? let me spell it out. for someone that doesnt mind paying $500 for a quality race engine, $280 is budget. i bought my blue head as a practice/club racing engine. youre comparing engines by price as i bolded above. im comparing them by features and specs. who the hell races 21vg's? are you kidding? thats an rtr/basher grade engine. is that what you're comparing this new xr-b to? an engine that uses standard plugs
__________________
dont crash, dont break, dont flameout=1st place
tmth3 is offline   Reply With Quote
Old 11-20-2012, 02:05 PM   #13
Tech Master
 
Rsickles's Avatar
R/C Tech Elite Subscriber
 
Join Date: Aug 2010
Posts: 1,278
Trader Rating: 19 (100%+)
Send a message via AIM to Rsickles
Default

Quote:
Originally Posted by tmth3 View Post
is that what you're comparing this new xr-b to? an engine that uses standard plugs
I'm not comparing this new engine to anything... why? Because who knows how "good" or "bad" it is. The VG was mentioned because it IS the "budget" .21 engine by OS.

Quote:
Originally Posted by tmth3 View Post
i know exactly what i am talking about! for the typical o.s. consumer(me) the xz-b (blue head) is indeed a budget engine. you are connecting price point with performance.
In consumer marketing lingo that would be called "value", not "budget". There's a VERY big difference between these two terms.

Quote:
Originally Posted by tmth3 View Post
the alpha lutz, werks b2, nova p5, picco 5tr, rb f11 are all budget engines, doesnt mean they dont perform.
Are you saying Lutz races a "budget" engine? Are you saying Kortz races a "budget" engine? I think some of these manufacturers would have a bone to pick with you.

Quote:
Originally Posted by tmth3 View Post
or someone that doesnt mind paying $500 for a quality race engine, $280 is budget.
I'm sorry but your 'reality' where everyone is driving $500 engine simply isn't true. To say a $280 engine is "budget" is mockery, when that's the bread and butter of .21 engines. Ask anyone of the engine shops on here what level of engines they service/see the most of in their shop... I assure you they aren't $500 engines.

Quote:
Originally Posted by tmth3 View Post
youre comparing engines by price as i bolded above. im comparing them by features and specs.
What features and specs have you compared thus far? Looking at a peak HP figure - which is so far off reality and real-world performance?


The only one saying the XR "doesn't stack up" is you... making presumptuous opinions of something that's not even in production. I'm done here.
Rsickles is offline   Reply With Quote
Old 11-20-2012, 04:55 PM   #14
Tech Champion
 
bigjayjay1's Avatar
 
Join Date: Jul 2009
Posts: 5,512
Trader Rating: 83 (99%+)
Default

Don't count out this engine nothing is spelled out with great details. OS manufacturer great power plants. budget or not it's another mill added into the market more the marrier.
__________________
TEAM: SERPENT AMERICA DRIVER -ADVANTAGE RACING PRODUCTS-COMPETITION HEAT INC - HOBBYPRO, VPPRO - BCE-
Serpent: 811N, 811T, 811E
bigjayjay1 is offline   Reply With Quote
Old 11-21-2012, 04:25 PM   #15
Tech Elite
 
kman16jr's Avatar
 
Join Date: May 2010
Location: Tampa,Fl.
Posts: 3,871
Trader Rating: 47 (100%+)
Default

Why are the o.s. xzb line getting discounted?is this because the worlds edition is around the corner?
__________________
Kevin Welfley
Tekno NB48/Eb48.2/SCT410/TLR 22 Mod/22 Stock/XRAY XB4.
Sponsors:|Tekno RC|Maxy's Fuel & Engines|Aga Power Batteries|Hobbytown Usa|Vp Pro Usa|Leadfinger RC|Boca Bearing Company|
kman16jr is offline   Reply With Quote
Sponsored Links
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
NEW OS 21 XZ-B and Speed XZ-B Marcus Falconie Offroad Nitro Engine Forum 4885 Yesterday 12:01 PM


All times are GMT -8. It is currently 11:39 AM.



SEO by vBSEO 3.5.0