Moist! (Aprilia RSV4 vid!)

**ManDownUnder** · 7th July 2008, 14:48

Originally Posted by vifferman

but it gives me a headache, not a chubby.

Call Carver - I know he shares his...

**R6_kid:Me** · 7th July 2008, 19:18

More juicy goodness!

http://www.youtube.com/watch?v=_7OoRGtyJ28

**limbimtimwim** · 7th July 2008, 19:50

Check how narrow the engine in is in this video.
[youtube]ZpgC7gZSAoA[/youtube]
You get a good look at after the 52 second mark.

Makes my 400 v4 look pretty big and silly. Mind you, that design didn't change all that much between 1986 and 1998.

If you want a translation of the video, here is my effort:
Pizza pizza superbike spaghetti performance pasta Rome pope history quad cylinder church mama mia pasta spaghetti Yoshi's Castle soccer Super Mario Brothers soccer motorcycle Mafia Pavarotti race machine!

**skelstar** · 7th July 2008, 19:54

Originally Posted by limbimtimwim

If you want a translation of the video, here is my effort:
Pizza pizza superbike spaghetti performance pasta Rome pope history quad cylinder church mama mia pasta spaghetti Yoshi's Castle soccor Super Mario Brothers soccer motorcycle Mafia Pavarotti race machine!

Now what are the chances that ALL of the Italian words that LBTW knows can literally be put into one sentence? (and then some extra non-iti) ...

**sAsLEX** · 7th July 2008, 20:05

"There's the V-4 thing: there's just something about it that inline 4s don't have, and V-twins have too much of."
– Murray Duncan

**Drew** · 10th July 2008, 17:39

Originally Posted by sAsLEX

"There's the V-4 thing: there's just something about it that inline 4s don't have, and V-twins have too much of."
– Murray Duncan

He never rode a VF750 for long then, not sure if there are words to describe that motor, other than FUCKED if you didn't have the valve clearances perfect, and the best oil on earth changed daily.

**sAsLEX** · 10th July 2008, 20:42

Originally Posted by Drew

He never rode a VF750 for long then, not sure if there are words to describe that motor, other than FUCKED if you didn't have the valve clearances perfect, and the best oil on earth changed daily.

My NC30 treated me well for a couple of years.

**limbimtimwim** · 10th July 2008, 21:38

Originally Posted by sAsLEX

My NC30 treated me well for a couple of years.

Without bothering to check my references, I think one of the problems with the VF series was the cam chain tensioner. So away it went...

**Drew** · 10th July 2008, 21:59

Originally Posted by limbimtimwim

Without bothering to check my references, I think one of the problems with the VF series was the cam chain tensioner. So away it went...

That's just one of the problems. The cams and rockers would eat themselves in no time at all without more maintenence than ride time. Went bloody well when it was going though, and it only cost me a bottle of bourbon.

**sAsLEX** · 10th July 2008, 21:59

Originally Posted by limbimtimwim

Without bothering to check my references, I think one of the problems with the VF series was the cam chain tensioner. So away it went...

Cam Chain?

Isnt that what gears are for?

**Drew** · 12th July 2008, 12:41

Originally Posted by sAsLEX

Cam Chain?

Isnt that what gears are for?

Even Honda have caught up with the times and use cam chains now. The gear idea limits too many things. Ya cant bump compression without shelling out for high comp pistons, bloody honda over technicalising shit.

**Ocean1** · 12th July 2008, 14:21

Originally Posted by Drew

Even Honda have caught up with the times and use cam chains now. The gear idea limits too many things. Ya cant bump compression without shelling out for high comp pistons, bloody honda over technicalising shit.

Horses for courses dude, gears are generally good for more revs, so if that's a big part of the design criteria they might make sense.

I see Buell's new rotax is chain driven to one cam which is gear driven to the other. Means the chain path is straighter, with a simpler tensioner required, cute.

**Drew** · 12th July 2008, 15:12

Originally Posted by Ocean1

Horses for courses dude, gears are generally good for more revs, so if that's a big part of the design criteria they might make sense.

I see Buell's new rotax is chain driven to one cam which is gear driven to the other. Means the chain path is straighter, with a simpler tensioner required, cute.

Fair call, the gear driven second cam idea is a good one, acuracy would be the only issue. An easy tuning method is to have cams "dialed in" on most bikes, since tolerences on mass produced bikes tend to be a tad different, harder indeed with gear drives.

**Sully60** · 12th July 2008, 15:23

Originally Posted by Ocean1

I see Buell's new rotax is chain driven to one cam which is gear driven to the other. Means the chain path is straighter, with a simpler tensioner required, cute.

A little bit like a TL engine then?