Moto GP to go to 800cc in 2007

**** it ! I chose the wrong bloody degree then didn't I !!

JL
(Wanna swap Pete ?)

 

Well, if they're getting rid of the two strokes then fair enough, I mean
a pull start on a smoker is one thing, but be a bit tough on an 800cc
single..be OK for Popeye I guess

 

The difference between a banker and a wanker is that a wanker knows what
he's trying to achieve.

Conehead
Ex banker

 

You think reducing them from 990 to 800 will speed them up?

Theo

 

A Web design company whose books I cook did his website recently. I got a
Kevin hat, CD and DVD.

Theo
I think I got stiffed on the stubby holder.

 

In-line five are quite easy to balance and are inherently much better
balanced than a four.

Not quite. the F1 rules specifically state that the engine will be a V10. No
other configurations are legal. And a V10 can be beatifully balanced without
the need for balance shafts. Probably why there are now more V10 diesels
around than V8 or V12.

Theo

Theo

 

Makes sense to me.

Theo
Optomaximally tuned.

 

The other way round Nev. The rules were changed so that V10 was the only
option. Ferrari were given an extra two years to comply because they were
committed by tradition to their V12. Mind you, they didn't start winning
again until they got V10s, and Schuie.

Theo

 

Max isn't going to let anybody call him a puller.

Theo

 

Theo Bekkers wrote:

Did that hurt?

Moike

 

They'd need a row of starting booths......

Moike

 

Should I have said shafted?

Theo

 

errm, you sure you're not confusing it with an inline 6 (which is
naturally in balance) ? I know MB have run inline 5s for years but I
could have sworn they had a balance shaft, no ?

Well that'll guarantee everyone runs a V10, why on earth did they choose
10 instead of 8 or 12 though ?

 

whatever tickles your fancy, I guess...

Moike

 

Let me guess: Bestpac ?

GB

 

This must be why everybody is giving up in-line sixes as quickly as they
can. MB, Audi and VW have been making in-line 5's in petrol and diesel for a
long time. A five has five items of mass equally distributed around the
crankshaft, a four has two, an in-line six has three. which do you think
would have a better balance? As far as I know, none of the above use a
balance shaft.

Probably because nobody had one.

Theo

 

And a pretty girl to wave the checkered Kleenex.

 

ICBW but I think you'll find that only MB and Volvo have released petrol
inline 5s (post ww2 anyway) and neither are still in production. Audi
and VW do V5s , which are a whole different kettle of fish, both V5 and
V6s are inherently unbalanced so it's a balance shaft either way, hence
if you wish to save a 10 or 15cm in the block length then a narrow angle
V5 can save you room in a tight engine bay over a V6.Also saves mass and
etc.

V6 is popular because it's a short compact motor and hence you can make
the engine bay smaller and thus the passenger compartment larger at the
expense of a somewhat harsher engine. There's a reason BMW have stuck
with inline 6s...

An inline 6 is in perfect balance as is 60 degree V12, a 90 degree
V4,and a 180 degree V2 (ie boxer). Everything else has either primary or
secondary imbalances. If you go to google there was an Italian website
I've posted several times that do diagrams and animated model of primary
and secondary balances. V3 5 and 6 (all of which the VW group make) all
have primary imbalances. 90 degree V2, 90 degree V8, 180 parallel
twin,inline 4 have primary balance but some secondary imbalance. etc etc

I don't believe any of the inline 5 diesels are still in production in
road cars either, but I'm not very aware of what goes on there - little
interest. Noting that generally diesels rev slower and are longer
stroke, hence imbalance is less noticeable (aside from which anyone
willing to put up with the harshness noise and smell of a diesel isn't
going to notice if it vibes a bit)

You don't *have* to put a balance shaft on the less balanced
configurations, but you'll get vibes and harshness if you don't.
Secondary is less irritating/noticeable than primary generally.

JL

 

Great troll, JL!

Hammo

 

"Volkswagen's R5 engine for the Jetta is completely new. It was designed
specifically for the U.S. market and it is an inline five-cylinder design
with twin camshafts and four valves-per-cylinder."

"Chevy Colorado
Judging from the way it looks, drives and sips gas (18-mpg city/23-mpg
highway), it could. The 2005 LS Crew Cab Z71 that I test drove recently was
painted Dark Cherry Red Metallic and powered by an unusual five-cylinder
inline gasoline engine that proved to be unusually smooth and torque-y. The
exhaust note wasn't particularly exciting, but the way it delivered power
was impressive. It had lots of torque just above idle, and could leave a
black streak on the pavement when the electronic throttle was applied too
agressively. It is rated at 220 horsepower and 225 foot-pounds of torque. "

"The Volvo Car Corporation is unveiling a new generation of our own
five-cylinder diesel engines for the Volvo S60, V70, XC70, and XC90. "

Five-cylinder diesel engine with Common-rail Direct Injection (CDI).
The premium Dodge Sprinter 2.7L in-line five cylinder Common-rail Injection
Diesel ...


Latest news - DIESEL engines are gatecrashing the luxury car market.
.... Engine: 2.7-litre, in-line, five-cylinder turbodiesel, 130kW at 4200rpm,
....


Mercedes make the 270CDI for the E series car as well as (I think) for the M
series. This engine also appear to be now fitted to a batch of Chrysler/
Dodge cars and SUVs.

The five cylinder in-line petrol and/or diesel engine is far from as dead as
you think. Expect one in a Honda road bike soon. (conjecture based on that
this is the only engine configuration not currently available from Honda).

Theo