Bike porn

Fillet brazed goodness, MAP Cycles is defintely becoming a favourite.

gorgeous :)

I don't think it's for you Perks, it's too slack.

What cable housing is that, it's lovely.

What's that leather nonsense in the top photo. Don't tell me we're all going retro frame bag/carry strap all of a sudden?

It's because it's a cyclocross bicycle, surely you should know this with your expertism.

I don't think it's for you Perks, it's too slack.

ive seen the light i like em upright & rigid now.Fillet joints like that are so hard to do properly,its a beautiful frame

This forum sucks id this isn't a repost:

http://i636.photobucket.com/albums/uu82/eighteighteighteight/Klein%20Quantum%20Pro/IMG_1891.jpg

http://i636.photobucket.com/albums/uu82/eighteighteighteight/Klein%20Quantum%20Pro/IMG_1903.jpg

http://i636.photobucket.com/albums/uu82/eighteighteighteight/Marina%20Barrage%20Outing/IMG_1931.jpg

Fap.

That's all it take.

what kind of hypercolor paint is that on the pink / blue klein? can you get that done at vaz?

what kind of hypercolor paint is that on the pink / blue klein? can you get that done at vaz?

its iridescent pearl ,I expect Vaz would a lot of frames like that in the 80/90s

thanks. tempted to do my bike like that.

Trail arises out of the steering axis angle and hub offset from the axis, it doesn't matter whether that comes from a head tube and fork or a king pin. It is actually possible to ride a single track vehicle with zero trail, the monkey on top being surprising adaptable to less than ideal chassis design.

i understand that bro, but it's the change in trail as you turn the bars that's relied on. The offset effectively decreases as you turn, and as you lean into a turn, it tends to pull the wheel into the turn. this is why you can ride with no hands, I suppose you could have a virtual axis angle about which the "offset" rotated, but i don't see that being discussed, nor can i imagine a simple way in which to design it because the offset would have to be nearly as large as the radius of the wheel.

As for a monkey do, the difficulty riding unicycle isn't the forward and backwards aspect, its staying up laterally thats difficult. Why? no trail, and you cant turn by simply leaning into the direction you want to go. You can, but you have to work hard to compensate else you fall into the turn.

my understanding at least.

what kind of hypercolor paint is that on the pink / blue klein? can you get that done at vaz?

It's not a special effect paint, it's a metallic pink and teal linear fade. Like this Attitude: http://www.oldklein.com/kleinit/AttitudeCoralreef.htm

This forum sucks id this isn't a repost:

Here's a close up of the same stem and top cap on a different Quantum Pro. It's horrid.

1 Attachment

The Mali is hrrundel's, so it has been posted before. ;)

so is the merckx
that laser might be mine too
...not sure

Here's a close up of the same stem and top cap on a different Quantum Pro. It's horrid.

thats weird

Perfect, seat tube almost vertical, win!;

Out of curiosity, what difference does it make in terms of handling/performance/comfort to have a more relaxed seat tube. I understand the steeper angle on TT/track frames put the rider further over the BB for more power, but what benefit is there to having a seat tube that's more relaxed than a typical road bike 73.5, when you would probably need to move the saddle forward to compensate?

Out of curiosity, what difference does it make in terms of handling/performance/comfort to have a more relaxed seat tube.

It's all about hip angle. If you raise the bars, you can then move the seat back without closing the hip angle. It affects weight distribution, putting more weight on the saddle and less on the hands, which might be more comfortable. Essentially, without changing the triangle formed by the three contact points, you can rotate the whole body by a few degrees either way. Tilted forward usually reduces frontal area, and thus aerodynamic drag, while increasing the weight borne by the hands and arms which can be tiring. Tilting back reverses all of the above. In the case of TT and Tri bikes, the seat tube is sometimes steepened without further lowering the front end, which is already aerodynamically optimised, and this has the effect of opening up the hip angle which affects the muscle recruitment in pedalling, which may either increase short term power output (TT) or reduce fatigue in muscle groups which are needed later fro running (Tri).

In addition to all of the above, the seat tube angle affects the set back of the saddle from the BB, which is a fit issue based on femur and foot length relative to total leg length.

i think im in love.

This used to be Aeronaught's (birmingham) bike, but he sold it to some geezer in new york. Its funny how these bikes end up with their own lives after riders, they get about, get pictures taken etc..

i think im in love.

So talk of hip angles does it for you then.

what kind of hypercolor paint is that on the pink / blue klein? can you get that done at vaz?

Vaz wouldn't be able to work with this kind of finishing, nor would he be doing it 'back in the day'.
Polychromatic finishes are not the same as fade paint jobs. Due to extremely
small flakes the whole equipment can only be used to that specific type of finish.
And Mario has told me personally, he rather not get into that.

its iridescent pearl ,I expect Vaz would a lot of frames like that in the 80/90s

Not quite. That's a Polychromatic finish, meaning the color is applied and after another clearcoat is applied which has flakes of a different shade. Depending on surface and/or angle, this will change the color.

thanks. tempted to do my bike like that.

It costs loads. But definitely go for it.
One of the best examples IMO, (obviously forget the build).

what shop is that?