[Red Hat]

Motoblast.org have taken the blueprint from the official teaser video and produced a nice render showing what the new R25 might look like in the flesh.

Compare as follows. The blueprint:

The motoblast render in colour:

The original R25 concept from 2013:

From: http://motoblast.org/2014/03/18/ini-dia-new-render-sket-yamaha-r25-versi-masspro-seperti-teaser-di-video-akankah-seperti-ini-yamaha-r25-nanti/

 

[Yamahahaha]

Wow that looks like a pretty accurate image of what the r3 will look like. It is almost identical to the concept with some minor changes, which is about what you would expect. I guess we will find out for sure tomorrow.

 

[barett]

the only thing missing is the rear fender. Personally I'm hoping Yamaha keeps the tail design of the concept bike, with only a minimal fender, the integrated tail light was so fecking sex...

 

[YR3]

Tail light of the concept shouldn't be too hard to stick to. I will be disappointed if they don't

 

[u3c307]

Drooling!!

 

[YR3]

Drooling!!

Yup, now I just wish it had an undertail exhaust for an even cleaner and sleeker look!

 

[race3]

i think this will give us a good idea of the R25 with headlights will look like

 

[u3c307]

Yup, now I just wish it had an undertail exhaust for an even cleaner and sleeker look!

Under exhuast looks cool but aren't very good for weight distribution and most people have problem with under tail burning up their behind.

 

[race3]

i thought under tail exhausts had better weight distribution

 

[barett]

i thought under tail exhausts had better weight distribution

its more CG that gets thrown off, not by much either might i add. You want to concentrate as much mass as possible as close to the ground as possible. Thats why I think you're starting to see many bikes with underslung exhausts from the factory...

 

[u3c307]

i thought under tail exhausts had better weight distribution

Barett is correct and addition it's just more centralize with the engine.

 

[race3]

yea the center of gravity would increase as the weight is further up.

but the weight distribution i'd imagine would be better with an undertail

 

[oppo]

Its true but everyone seems to be steering away from undertail exhaust. Instead just a short pipe in to the muffler on the right. The canisters weight in around 3lbs give or take and carbon ones even less.

 

[YR3]

yea the center of gravity would increase as the weight is further up.

but the weight distribution i'd imagine would be better with an undertail

to some it will matter, to me...not so much. this will be a bike i ride almost all the time during summer or when ever it's warm and hit the track once in a while with

 

[race3]

yea i wouldnt mind an undertail or a side

whatever works

 

[YR3]

Im picky when it comes to looks and like things uniform and would love to have an undertail exhaust, one of the reasons why i love the CBR600

 

[Yamahahaha]

I can appreciate both an undertail exhaust or a short side exhaust. I'm not really set on either, I would have to see what options are out there first. As long as it is relatively light weight and has a nice exhaust note I think it is fine.

 

[barett]

the other thing we do have to consider about under slung exhaust systems is they contribute to excessive heat soak. Beacuse the cats and headers are centralized closer together than in a conventional or an under tail you run into heat soak issues, where the exhaust header leaks heat into the rad which runs the temp up, which overworks the fan and water pump impeller which then leads to increasing temperatures. Small scale thermal runaway like in a lith-ion battery...

 

[race3]

isnt the cat and header right beside each other regardless of what kind of exhaust?

 

[YR3]

the other thing we do have to consider about under slung exhaust systems is they contribute to excessive heat soak. Beacuse the cats and headers are centralized closer together than in a conventional or an under tail you run into heat soak issues, where the exhaust header leaks heat into the rad which runs the temp up, which overworks the fan and water pump impeller which then leads to increasing temperatures. Small scale thermal runaway like in a lith-ion battery...

Crap, didn't even think about it like that, put that way it sounds bad, better to have a regular high mount in that case.