OP
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We all have been anticipating this one:
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Not So Moderator
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UTC quote
wow



Gives me the vapors that does...
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Ossessionato
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UTC quote
Nice! More kits to play with! Looks like the Quattrini 244 had a baby with the Malossi MKII...
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Lucky
76 Sprint V, 63 GL, 62 VBB, 05 Stella, 66 Smallstate
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Lucky
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oooohhhh....
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Veni, Vidi, Posti
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UTC quote
^^^^^you know you want one
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79 P200E (Ruby), 62 Allstate (B-62)
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UTC quote
My pulse just quickened
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UTC quote
Oh-boy

Hope they get them on the market soon since I think I could get one for the VR-One engine.

The whole thing with basically only two real options for 200 cylinder has been quite disappointing. Let's hope this will fill the gap between Malossi and Q244
OP
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UTC quote
Knowing VMC with past Aprilla Engineer involved, I am sure they will deliver a state-of-the-art piston and CNC machined head that will be jaw dropping. . . at reasonable pricing.
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Molto Verboso
One or two fun scoots....nothing too precious
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UTC quote
Wonder what the bore size is, and whether that stumpy little spigot will fit a stock P2 engine case without machine work? I think 70mm bore is about as big as you can go with the stock case? With the displacement at 245 - 250cc, this must require at least 62mm stroke, probably 64mm, as there's only so much bore that is achievable with 60mm stroke.
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Jet Eye Master
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Jet Eye Master
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UTC quote
swa45 wrote:
Wonder what the bore size is, and whether that stumpy little spigot will fit a stock P2 engine case without machine work? I think 70mm bore is about as big as you can go with the stock case? With the displacement at 245 - 250cc, this must require at least 62mm stroke, probably 64mm, as there's only so much bore that is achievable with 60mm stroke.
Quick calculation says you're right. Stumpy spigot in the case = 70mm bore; to get that to 245cc it's 64mm stroke. And with the stumpy spigot it will need a long rod, probably 126mm like the Quattrini.
At least if tried and not great an M244 will bolt on and be an M260.
@swiss1939 avatar
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UTC quote
Jack221 wrote:
Quick calculation says you're right. Stumpy spigot in the case = 70mm bore; to get that to 245cc it's 64mm stroke. And with the stumpy spigot it will need a long rod, probably 126mm like the Quattrini.
At least if tried and not great an M244 will bolt on and be an M260.
and a big, irrational, wallet.
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Weird 80's Vespas & Cool Vintage Lambrettas
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UTC quote
Theadore, fetch my fainting couch!

also, please look in the junk drawer of the china cabinet, I believe I lost ten grand in there the other day that I'll be needing...
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UTC quote
New photos...
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parallelogramerist
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UTC quote
The cylinder kits keep getting bigger, but the cruciform stays the same size...
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UTC quote
whodatschrome wrote:
The cylinder kits keep getting bigger, but the cruciform stays the same size...
+ alright, alright, alright
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UTC quote
looks burly. any idea on pricing/availability yet?
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UTC quote
greasy125 wrote:
looks burly. any idea on pricing/availability yet?
Spring 2023.
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UTC quote
GickSpeed wrote:
Spring 2023.
well, that gives me time to save up my pickles and sell off some junk.

anybody wanna buy a winter project?
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UTC quote
What kind of crank will this be using?
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Lucky
76 Sprint V, 63 GL, 62 VBB, 05 Stella, 66 Smallstate
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Lucky
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UTC quote
FINYoshi wrote:
What kind of crank will this be using?
62mm bell crank for me
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UTC quote
Just wondering about the rod lenght if it's the same as with regular cylinders.

Special-unicorn cranks are a turn-off for me.
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Lurker
Egig 170
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Lurker
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UTC quote
I got this from the horse's mouth recently. It's based around the SIP 127 mm rod 60 stroke crank. The spiggot is 8mm deep but get this, the kit will come with a steel screw on template that will allow home builders to Dremil the casing with a reasonable degree of accuracy without the need for specialist machining. The exhaust stub will also be the right diameter and angle, plus the gasket surface overlap on the casings at the clutch side transfer is thicker. To me that sounds pretty good.
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Jet Eye Master
PX221 MHR, O tuned PX200, PX181 Quattrini and some motorbikes
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Jet Eye Master
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UTC quote
Would be surprised if case modifications were needed. This is not VMC's MO.
If they have done this, everyone will just buy the better made and already proven to be awesome Quattrini M244.
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Lurker
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Egig 170
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UTC quote
Jack221 wrote:
Would be surprised if case modifications were needed. This is not VMC's MO.
If they have done this, everyone will just buy the better made and already proven to be awesome Quattrini M244.
Yeah it sounds messy initially, but after matching the transfers there's not a hell of a lot of material to remove for the 8mm deep thin-walled spiggot anyway, so personally I wouldn't be swayed by the triviality of having to extend my Dremil work by a few minutes.

If VMC follow their own MO on pricing I wouldn't be surprised if this comes in around a similar price range as the Malossi 210 cylinder kit. If that's their target then things will get interesting.

I'm speculating on the pricing bit of course but it's not entirely unrealistic, I've put my next 221 on pause just in case.
UTC

Jet Eye Master
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Jet Eye Master
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UTC quote
SteveH wrote:
Yeah it sounds messy initially, but after matching the transfers there's not a hell of a lot of material to remove for the 8mm deep thin-walled spiggot anyway, so personally I wouldn't be swayed by the triviality of having to extend my Dremil work by a few minutes.

If VMC follow their own MO on pricing I wouldn't be surprised if this comes in around a similar price range as the Malossi 210 cylinder kit. If that's their target then things will get interesting.

I'm speculating on the pricing bit of course but it's not entirely unrealistic, I've put my next 221 on pause just in case.
I'd be surprised if it was so easy. Case metal would be thin on the inside of the cylinder studs. It's not going to be faster than the malossi and that runs pretty well with no case work at all. Or special crank.
We'll know for sure once it's available.
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Enthusiast
px244gs, cosa221LX, sprint177, gilera runner 180, triumph tiger 955
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Enthusiast
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UTC quote
Jack221 wrote:
Would be surprised if case modifications were needed. This is not VMC's MO.
If they have done this, everyone will just buy the better made and already proven to be awesome Quattrini M244.
no
cause vmc is gonna be way cheaper than244

i wouldnt wonder
if they eve stay under malossi sport 210

oh and powerwise
vmc is aprilia racing know how

retired race engineers design some.2stroke hardware just for fun

ie vmc 177 super G for 150 bucks
is kinda on quattrini1x level...
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