Honda RCV1000R

the-insider · Oct 31, 2013

Sloth_27

3665641383194127

Yes, I think the 5 valves only remains on Yamaha Outboard engines now.

Insider, do you mean that the prototype bike potentially doesn't need pneumatic valves anymore due to advances in the steel valve technology? Or at least that the advantage is so very small that it doesn't make it worthwhile for the production bike.

Regarding the extra weight of the 24ltrs, I'm assuming they might not use the full allocation at some tracks. Maybe 22ltrs or something will be the sweet spot.

Exactly that, this amount of power at these revs are no longer a problem, if you are HRC, As for it being a production bike, this is still an HRC project, it should have a different name.

the-insider · Oct 31, 2013

Dr No

3665681383198577

Not sure, Sloth. Only boat engine I've fiddled with in the recent past was a mighty 2 cyl diesel on a Cavalier 32.

But my "I think" referred to my assumptions as to why it died. Could have been the extra friction of another valve (doubt it), could have been flow from the 3 ports interfering with each other (ooo eer), could have been packaging and port shape(better possibility), probably all of the above but at the time I recall a lot of fuss being made in F1 about flame speeds, combustion chamber shape, etc etc...

I have got my 2cyl Bukh running like a Rolex at the moment, Diesels have never really been my thing, but I bought a diesel car last year and a friend reworked the management system, holy ...., better fuel consumption around town, lower mpg but ok at speed, 100 more bhp and 200lb ft more torque, it is ....... quick by any standards and drives like it just came out of the showroom, I am now a convert.

kiddyK · Oct 31, 2013

the-insider

3665901383208800

it should have a different name.

Customer prototype

the-insider · Oct 31, 2013

kiddyK

3665961383215112

Customer prototype

That would do it, what I think is getting lost here is, the word production, converted road bikes (FTR Kawasaki) are making 245+ bhp, cheap production road bike are making 200bhp,and both are restricted by their initial design as road based engines, neither of these struggle to much with .... valve control, This is a full on HRC project, using the very latest technology, this is no converted road bike engine.

lil red rocket pilot · Oct 31, 2013

kiddyK

3665961383215112

Customer prototype

RCV1000R

Dr No · Oct 31, 2013

A complete lack of days detail there. This is worse than arguing Tech with Lex...

Personally, if I had the money, I'd sponsor a team just to get my hands on one. Actually, I'd get a HRC 500 twin. But this whole discussion is getting as tedious as .....

"go and do some research". FFS.

Easy question: what is an HRC quality "sprung valve system"?

What aspects makes it " HRC" quality?

You'll probably accuse me of wimping it, but without any detail to dig into, I'm bored and out.

Dr No · Oct 31, 2013

the-insider

3665901383208800

Exactly that, this amount of power at these revs are no longer a problem, if you are HRC, As for it being a production bike, this is still an HRC project, it should have a different name.

Come on, man. For someone who told us s/he looks at lots of dyno graphs, that was a giveaway.

Easy clue: power = rpm x ?

(google might make this easier...)

Dr No · Oct 31, 2013

lil red rocket pilot

3666011383216058

RCV1000R

...which, strangely, is the thread title.

Keshav · Oct 31, 2013

MotoChick

3663161383068959

Oh

Thank you Chopper

Does the Heavy Industries division make the heavier bikes like the cruisers and the ZX 14s?

They even make the freakin' subway cars here in New York City (and other places).

chopperman · Oct 31, 2013

Can you answer my questions insider ??

the-insider · Oct 31, 2013

Had the police round this morning, my ladies Father has left us, I will be back in a few days or so. Regards Gary.

Geonerd · Oct 31, 2013

Dr No

3665681383198577

Not sure, Sloth. Only boat engine I've fiddled with in the recent past was a mighty 2 cyl diesel on a Cavalier 32.

But my "I think" referred to my assumptions as to why it died. Could have been the extra friction of another valve (doubt it), could have been flow from the 3 ports interfering with each other (ooo eer), could have been packaging and port shape(better possibility), probably all of the above but at the time I recall a lot of fuss being made in F1 about flame speeds, combustion chamber shape, etc etc...

Yea, sounds right. I seem to recall a fairly technical writeup concluding that the mutual 'shading' along the the inlet circumference significantly reduced the theoretical flow.

Jumkie · Oct 31, 2013

the-insider

3666351383242716

Had the police round this morning, my ladies Father has left us, I will be back in a few days or so. Regards Gary.

I don't know what to make of this but hope your situation is ok.

chopperman · Oct 31, 2013

Geonerd

3666381383244500

Yea, sounds right. I seem to recall a fairly technical writeup concluding that the mutual 'shading' along the the inlet circumference significantly reduced the theoretical flow.

Maybe, but that's what gas flowing is for. The 5 valve was all about valve surface area which in very important in performance normally aspirated engines. An advantage being more intake using less duration and overlap in the cam timing, which will have many other benefits. This is why i asked exactly what type of valve train was being used instead of the pneumatics.

lil red rocket pilot · Oct 31, 2013

the-insider

3666351383242716

Had the police round this morning, my ladies Father has left us, I will be back in a few days or so. Regards Gary.

RIP your ladies father.

kiddyK · Oct 31, 2013

the-insider

3666351383242716

Had the police round this morning, my ladies Father has left us, I will be back in a few days or so. Regards Gary.

Commiserations. Don't worry about bikes, family is more important.

L8Braker · Oct 31, 2013

insider, sorry for your loss.

chopperman · Oct 31, 2013

L8Braker

3666831383264822

insider, sorry for your loss.

Yeah me too. Look forward to your return afterwards.

barbedwirebiker · Oct 31, 2013

Sorry to hear. Condolences to your family

hawkdriver · Oct 31, 2013

Nakamoto

<p style="margin-left:10px;color:rgb(0,0,0);font-family:Arial, Helvetica, sans-serif; “Our calculations say that for all races there will be no problem with 23 litres and they will not need to use a leaner mixture even with 23 litres. At 22 litres the production machine would have to use a leaner mixture, so 23 is enough.
<p style="margin-left:10px;color:rgb(0,0,0);font-family:Arial, Helvetica, sans-serif;"To run the production bike with 20 or 21 litres is impossible. But with 23 litres of fuel on the production machine the rider will be able to use full power, so at fuel critical circuits such as Motegi and Silverstone, the factory prototypes will have to use a leaner mixture, so the gap between them will be closer. In qualifying it is different because the factory bikes can use full power.”

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