R12S Really "Runs For The Trough" When Its Feeding Time! (Top End)

Dr. Curve · 08-08-2007, 05:59 PM

I know its getting old brothers.........but I simply can not get over the ease with which the new R12S will pull to a indicated 155 with almost no help at all from a flying start, slight wind, or exceptional traction on a smooth surface, who knows? All I can say, is that my totally stock R12S, with a full belly pan and different disc being it only non-BMW additions, will run up to a indicated low-mid 150's quickly, (190 tire) in about a 3/8 mile straight when starting at about 90 mph in 4th or 5th (gear makes little difference).

None of us should care.........after all......of what use is that type of stock top end from a air-cooled, push-rod, twin cylinder, running with its ears (cylinders) sticking out in the wind?

I'm wondering if my very careful break-in of the engine, which still has barely 6000 miles on it, is causing this type of extended useable HP into the upper RPM and peak torque ranges. Very interested to know what a good 6000 mile tune and test will offer. I'm on the track of "Hyper-Mist" injectors to change out with the already excellent stock ones. This seems to be a sure way to quicken the engine response even more. Also looking at combustion chamber coatings, and lighter valve train parts.

Are any of you other R12S brothers also noticing the ease with which these new bikes "run for the trough" when its feeding time?

These R12S BMW bikes can really look close at laying claim to being "the fastest top-end MPH, twin cylinder, air-cooled, push-rod valved, 1200-cc, box stock bikes ever produced by anyone.......ever!"

Who would have ever thought that we would see this day. The absolute best top-end bike in its entire class by miles.......not seconds.

Long live the last of the push-rod engine, air-cooled, twin cylinder, "S" bikes. R12S rules its class up top. Period.

dee jones · 08-08-2007, 06:06 PM

I second that!

wswartzwel · 08-08-2007, 06:09 PM

This should be a good thread....

sdtuono · 08-08-2007, 06:29 PM

On my roads out here I get alot of which BMW is that. I want to say, the one that just flew up your ass, but I don't. I just wait for the road to get bumpy and twisty and then procced with the power on and wait for them at the fork in the road,with my napkin. Thank you BMW I love my R1200S.

roger albert · 08-08-2007, 06:34 PM

I hope someone does a good A-B on the hyper-mist vs the mega-mist injection.

Auf Deutch now: Mist.

JonyRR · 08-08-2007, 07:38 PM

funny...I thought IRISH Mist added to the combustion process...I know it does on occasional winter evenings.....

Dr. Curve · 08-08-2007, 07:44 PM

Agreed Roger. For now the new Concours 14 is the first bike to be released with these new type injectors but builders have been on to them for a while. They have gone to 12 75 micron orifice units instead of previous 10 60 micron units.

They call theirs "new Atomizing Injectors," AI for short.

The reason is two fold, better cylinder filling..........and a more effective and efficient burn equals better mileage to peak HP ratio.

N8Kern · 08-08-2007, 08:17 PM

Wow! Thats alot to comprehend. Im just glad it all works inside our S's and get's us up front!

Dr. Curve, your presence at Daytona would be great! Our pit area is alwaya open to you.

Cheers,

N8!

Bob Hancock · 08-09-2007, 01:29 AM

I'm hoping Bobby at BMW Atlanta has some more tickets for this October's event. Jim....you really need to come see this if you can. Daytona in the Pits is a wonderful place for folks like us.

Highlander179 · 05:49 AM

Quote:

Originally Posted by Dr. Curve

These R12S BMW bikes can really look close at laying claim to being "the fastest top-end MPH, twin cylinder, air-cooled, push-rod valved, 1200-cc, box stock bikes ever produced by anyone.......ever!"

Who would have ever thought that we would see this day. The absolute best top-end bike in its entire class by miles.......not seconds.

Long live the last of the push-rod engine, air-cooled, twin cylinder, "S" bikes. R12S rules its class up top. Period.

just curious, what other bikes are being compared in this exact class? just the Buell?

signit98 · 08-09-2007, 06:24 AM

Quote:

Originally Posted by Highlander179

just curious, what other bikes are being compared in this exact class? just the Buell?

....I don't even think the Buell is truly considered "in this class", George...

completely different animal... I am just - once again - baffled as to how easily people are misguided.... a 1200cc motorcycle (sportbike, I must add) that cost in excess of $16K and he's getting all wet about 155MPH...

...aside from the fact that the top end really does NOT matter in "real life"... any of the Japanese 750's or even 600's do this with ease at half the price and a quarter the problems, it seems...

..it's a nice bike for sure, and in the capable hands of someone like Nate ot BP, it is quite competitive, but look what bikes it is competing against, please...

It is a Sportbike and by NO MEANS a Superbike... was never intended to be and never will be. Yet, it succeeded to give the dear Dr. a reason to step onto the soap box over and over again... judging by the amount of attention he seeks with his posts, he must be very lonely... but then again, Dr. - I am sure your 1200S willingly listens and does not talk back, no matter how much BS you come up with!?

There is value for you money...

geothepencil · 08-09-2007, 06:41 AM

Dr: Why don't you pack that S up and go out to the BMW sponsored RWYB run at Bonneville coming up ? We have a member over at the Forums that is going to give it a try although I think she is going to run a K bike and it would be great to have another travel/event report posted here, particularly one with such a long history of banter. We would love to go ourselves, but are contracted to work that time period.

geo

Dr. Curve · 08-09-2007, 06:42 AM

So Ralf, what is the BS part of my post you are drawing reference to? I never say anything about comparitive value, the money things cost, or about "top end" being the only thing out there. I am just commenting on these same old BMW twins and how well they continue to do and improve. So tell me straight out...............What BS are you speaking of. Also, why would you think I am lonely because I love BMWs?...........indeed Ralf, its just that I have never been without one or more BMW twins in the past 37 years. So I like them a lot..........is that BS? I hear the Chinese and Koreans are both coming out with very fast 4-cylinder bikes that cost very little and go fast..........perhaps these are better for some people........but I am not one of them.

Highlander179 · 08-09-2007, 06:47 AM

Quote:

Originally Posted by Dr. Curve

So Ralf, what is the BS part of my post you are drawing reference to? I never say anything about comparitive value, the money things cost, or about "top end" being the only thing out there. I am just commenting on these same old BMW twins and how well they continue to do and improve. So tell me straight out...............What BS are you speaking of. Also, why would you think I am lonely because I love BMWs?...........indeed Ralf, its just that I have never been without one or more BMW twins in the past 37 years. So I like them a lot..........is that BS? I hear the Chinese and Koreans are both coming out with very fast 4-cylinder bikes that cost very little and go fast..........perhaps these are better for some people........but I am not one of them.

the BS is when you say its at the top of its class.... when its only in a class of one.

arbik · 07:17 AM

ok.

If you want to get technical, then yes, BMW Oil/Hex heads ARE in a class of one.
The most similar engine configuration that comes close to our beemers, is the Moto Guzzi engine. The difference is that the BMW is not a pure Pushrod engine. Its almost a mid-cam, half pushrod engine. the Guzzi has 2 configurations. It has the 2 valve true pushrod engine, and it has the overhead cam 4 valve motor.
the 4 valve overhead cam motor will blow the S out of the water (see MGS01), but the new hex defintely has the lead on the old Guzzi 2 valve motor.
But again, you're comparing apples and oranges, since the beemer really isnt a full pushrod engine.

Having said all this, I agree that for us regular (and somewhat old- I'm 34) folks, its as fast as we need, and has the sophistication that we desire.
I guess its the difference between a Porsche C4, and a Mitsubishi Evo or Subaru WRX STi.
The performance you get for the money on the Rice Rockets, would almost make the C4 Obsolete, but the refinement, and maybe even brand prestige, keep the Porsche in the running. Again, mostly by old guys, who have money

Right on Doc!

92'Bearkat · 08-09-2007, 07:44 AM

Right on DR.

Ralf, don't hate on the good Dr. The man loves his bike.

I am partial to mine as well. Jump back over to the HD chat, they love the negative talk over there.

signit98 · 08-09-2007, 08:16 AM

Jim, I have told you before, I admire your passion... but that's about all there is to admire from my side... you frequently "talk" without facts to back it up... when asked to do so you either ignore or condescend, to distract from the fact that you are talking out of your A$$ and, you keep coming up with the same stuff, trying to neatly re-package it...

As you said yourself, it get's old... who really cares about top speed, quarter miles and such for a 1200S? ... the bike is not made for a drag strip and I seriously doubt many people use it for such...

George said it perfectly... "top of it's class" in a class of it's own... even though Arbi brings up some valid points, it still is not apples to apples... it's BS!

Arbi, if you already feel old at 34, what shall I do then LOL... I agree about the brand prestige and that IS important to some, it seems... that is ok, it does - after all - keep companies like BMW, Porsche and such in the business... being able to charge top dollar for their products... are they better than others - debatable, but more exclusive, YES!

So, for the folks that have nothing but material things to differentiate themselves from the masses - those are the tools, I guess...

I like my donkey... so much, that I am going to sell off some of my other bikes (including my Duc) because I can do what I want to do these days on the BMW... I think it's a great bike, but I am not diluted enough to think that ANY BMW is on top of ANYTHING...

I do have the money already, but I see no point yet in spending it for said things to prove anything... maybe if I get older???

signit98 · 08-09-2007, 08:18 AM

...Brent, I don't HATE the Dr. - As a matter of fact, I think him and I would actually have a better level of communication in person... I am just stating my opinions... simple as that.

Airheads4Ever · 08-09-2007, 09:46 AM

Quote:

Originally Posted by arbik

ok.
The most similar engine configuration that comes close to our beemers, is the Moto Guzzi engine. The difference is that the BMW is not a pure Pushrod engine. Its almost a mid-cam, half pushrod engine. the Guzzi has 2 configurations. It has the 2 valve true pushrod engine, and it has the overhead cam 4 valve motor.
the 4 valve overhead cam motor will blow the S out of the water (see MGS01), but the new hex defintely has the lead on the old Guzzi 2 valve motor.

The 4-valve Guzzi engine in the MGS01 is no more OHC than the R1200 unit. It is high-cam, short pushrod, much like the BMW but with the cam drive above (between) the cylinders instead of beneath.

Highlander179 · 08-09-2007, 09:54 AM

ORANGES at the bestest EVAR!!!