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Message started by Gerry on 02/17/14 at 05:23:55

Title: BMW R Nine T
Post by Gerry on 02/17/14 at 05:23:55

Another interesting new bike with classic styling.
http://www.cycleworld.com/2013/10/17/2014-bmw-r-ninet-first-look-review-photos/
When you go to the link click on the picture in the article and you will get to a nice photo gallery.

I'm drooling over this bike too. Come on spring and warm weather so I can get reacquainted with the bikes I already own ::)

Cabin fever bad Gerry

Title: Re: BMW R Nine T
Post by pgambr on 02/17/14 at 08:44:21

Ok, what do you think of horizontally opposing pistons? I like mine to go up and down.

Title: Re: BMW R Nine T
Post by ToesNose on 02/17/14 at 09:02:42

Sweet bike, more street fighterish then classic to me.

Title: Re: BMW R Nine T
Post by Gerry on 02/17/14 at 09:40:15

5F484E424D5D2F0 wrote:

Ok, what do you think of horizontally opposing pistons? I like mine to go up and down.

Guzzi riders have a saying when discussing BMW... "Moto Guzzi's have perky jugs and BMW's have droopy jugs".

But really I have always liked "Boxer" engines. VW, Porsche. My favorite car has always been a 911, especially in GT racing. Never owned one though. Never owned a BMW motorcycle either.

Gerry

Title: Re: BMW R Nine T
Post by gizzo on 02/17/14 at 13:33:21

I like it. Looks like BMW has been watching the custom bike scene. Lots of cool boxer based cafe racers,brats and trackers been built lately. This one looks the goods,and better than a guzzi stone. As a FBMWO, I think the boxer motor is fine. Has character,good looks, a different sound and doesn't fall all the way over when you drop it. It's the closest I have come to a maintenance free motorcycle,too .

Title: Re: BMW R Nine T
Post by mpescatori on 02/18/14 at 07:14:24

283F39353A2A580 wrote:

Ok, what do you think of horizontally opposing pistons? I like mine to go up and down.

If you look at engine technology and go beyond the American theorem that "V8 is good, all others are cr*p",
then you'll realize that there are plenty of different engine designs that work for SOME engines, not for others.

2 cylinders ? Moto Guzzi and BMW have got it right, 90°Vtwin and flat-twin are inherently balanced.

http://bmwmotorcycletech.info/boxer.gif http://www.influx.co.uk/wordpress/wp-content/uploads/2013/01/Moto-Guzzi.gif

But then, let us not forget Ducati Desmos 8-) [In the picture below, center cam is to close the valves, left and right cams to open]

http://www.ducati.ms/forums/attachments/sport-touring/29953d1208203565-animation-ducati_desmodromic_cam_animation.gif http://ultimatemotorcycling.com/wp-content/uploads/2012/12/ducati-desmodromic-valve-system-history-1.jpg

Not so Harley Davidson with a skewered V-twin which is inherently inbalanced
(hence its trademark "potato-potato", caused by unevenly firing cylinders)
(notice the green and red cams not perfectly aligned, that is the clue to the uneven firing)

http://https://xorl.files.wordpress.com/2011/03/v-twin_animation.gif?w=700

Else, in-line twins require so many balancing forces, you may as well look at the "Neander" design (made in Germany, all patents paid for)

http://thekneeslider.com/images/neanderdiesel3.jpg
http://www.neander-motorcycle.com/shortversion-neu/main_en.html

3 Cylinders ? Only Laverda, Yamaha and Triumph come to mind.
The point being that while Laverda started with 180°crankshafts, researched and eventually produced the "Jota" (read it "yota"),
Yamaha and Triumph stayed true to the 180° design with a vibrating engine and uneven firing (I refer to the classic Tridents and XS750 of the '70s and '80s)

Pictured, the 120° Laverda crankshaft and pistons

http://www.motociclismo.it/cache/gallery/5/9/8/2/AA043382_4DImageDoc.jpg_650_490.jpg

4 cylinders ? Flat four is THE design to go (see Honda Goldwing) but V4 (Honda VF) is also smooth and a better powerhouse than an in-line four (any run of the mill jap...)

Oh, yes... BMW K75/K100 ? Just a variant of in-line triples and fours... yawn... ;)

Title: Re: BMW R Nine T
Post by Serowbot on 02/18/14 at 08:29:40

I've always preferred the sound and torque of a twin of any configuration...
...but with BMW's,.. that feeling of the bike leaning right as you gas it from a stop freaks me out...
I can also live without the complexity of a shaft drive...
I tend to whack my shins on the cylinders as well... :-?...

The bike looks nice though...

Title: Re: BMW R Nine T
Post by verslagen1 on 02/18/14 at 09:10:04

Not really ever spoken but the reason V 90's are better is the primary and secondary vibrations are better cancelled.
With our single, the counter balancer dampens the primary vertical vibe.
But over compensates for the secondary or fore/aft vibe.
Most people are sensitive to the vertical, but not the fore/aft vibe.
With a V90, both vibes can be better cancelled.

Title: Re: BMW R Nine T
Post by pgambr on 02/18/14 at 10:06:04

Quote:

If you look at engine technology and go beyond the American theorem that "V8 is good, all others are cr*p"

,

I'm sure they put together some phenomenal designs with some with extremely sound engineering. I just prefer them to go up and down, I guess it’s because I’ve ridden singles for so long. My other bike is a KLR 650. I do like the thought of an in-line 2 cylinder though (BMW F 800 GS). It would be a pretty expensive gaffe if I didn’t really like it. So for the time being, I’ll just keep it simple and ride the singles. :)

Title: Re: BMW R Nine T
Post by Gerry on 02/18/14 at 13:37:09

697E78747B6B190 wrote:

Quote:

If you look at engine technology and go beyond the American theorem that "V8 is good, all others are cr*p"

KLR 650, that's another bike I would like to have. There are lots of trails and public land just a couple hours north of me. Always thought it would be cool to set a KLR up with pelican cases, tank bag and go camping on the trails. Unlike most riders I never had a dirt bike so a KLR seems like it would be fun to play with... gently :). I'm too old for aggressive dirt biking.
Gerry

PS
I like the BMW 800 GS too.

Title: Re: BMW R Nine T
Post by pgambr on 02/18/14 at 16:44:21

The KLR can do it all and it is great on the street as well. It soaks up the bumps really well. Here's a pic.

Title: Re: BMW R Nine T
Post by WD on 02/19/14 at 08:46:09

The last pic in the article, the way the light hits the fuel tank lines... looks like the seat rail on a dork mobile Harley FL, old Indian Chief, or Drifter 1500.

::)

I'm less than impressed with BMW since my 1950s model split in half riding it a week after I bought it and got it running. Good engine, great aesthetics, but the rest of it left something to be desired, like, shall we say, everything...

Title: Re: BMW R Nine T
Post by mpescatori on 02/20/14 at 02:42:30

6073370 wrote:

The last pic in the article, the way the light hits the fuel tank lines... looks like the seat rail on a dork mobile Harley FL, old Indian Chief, or Drifter 1500.

::)

I'm less than impressed with BMW since my 1950s model split in half riding it a week after I bought it and got it running. Good engine, great aesthetics, but the rest of it left something to be desired, like, shall we say, everything...

Did you ever check the frame ? Sand it down and repaint it ? Or just "got her running" ?

You can't expect a 50-60 year old piece of machinery to be integrally sound... "just because"... ;)