Dylan Macgreggor R1 Beach racer

[Road kill]

A guy from the Papakura motorcycle club was running an SX1100 beach racer about 85-86.
Good to see the mad bastards are still going strong.

[CaSket]

That is so cool....
That R1 is owning it up too. But the guy must have some cash to burn to risk it like that. Not to mention the clean and service that things going to need after that

[White trash]

That is so cool....
That R1 is owning it up too. But the guy must have some cash to burn to risk it like that. Not to mention the clean and service that things going to need after that

An old R1 like that is probably worth a third of what a new MX bike costs.

[mikeh]

Maybe at Wauinui Beach then? Because as long as it looks (which Wainui ain't really)...I don't recognize the hills in the backround as being the main beach. Must go have another peep.

it was at Makarori Beach. Next one over from Wainui beach.

[nothingflash]

Maybe at Wauinui Beach then? Because as long as it looks (which Wainui ain't really)...I don't recognize the hills in the backround as being the main beach. Must go have another peep.

Yep - Makorori Beach looking north to Makorori Hill me thinks.

[warewolf]

He must have a good steering damper on that thing! Power to weight must be ok, as the chap with a K100 Beemer who comes to the Nelson beach races each year throws up a massive rooster tail all the time. Not in the same league as an R1 but it's still a big fast road bike, not an MXer The R1-powered quad was horn but crapped out early on, unfortunately. Didn't see the other big-engine quad ('Busa?) last year though.

Is the speedo driven off the gearbox on an R1?

[tigertim20]

He must have a good steering damper on that thing! Power to weight must be ok, as the chap with a K100 Beemer who comes to the Nelson beach races each year throws up a massive rooster tail all the time. Not in the same league as an R1 but it's still a big fast road bike, not an MXer The R1-powered quad was horn but crapped out early on, unfortunately. Didn't see the other big-engine quad ('Busa?) last year though.

Is the speedo driven off the gearbox on an R1?

yes.
10 characters fuck ya

[Geeen]

What is the other road bike in second or third?? That man has coconuts

[scott411]

my old man won the NZ title on a knobby tired GS1000 at gisbourne in 1986 (or 87) ,

there was some very fast bikes that ran out of the papakura club at kerotahi until they stopped about 5-8 years ago,

the R1 is next level tho,

[Crasherfromwayback]

my old man won the NZ title on a knobby tired GS1000 at gisbourne in 1986 (or 87) ,

there was some very fast bikes that ran out of the papakura club at kerotahi until they stopped about 5-8 years ago,

the R1 is next level tho,

Beach racing used to be a real big deal back a bit eh! I used to love it.

[roogazza]

my old man won the NZ title on a knobby tired GS1000 at gisbourne in 1986 (or 87) ,

there was some very fast bikes that ran out of the papakura club at kerotahi until they stopped about 5-8 years ago,

the R1 is next level tho,

I had a mate who put his Mach4 on the beach at Pekapeka in 1972complete with knobblies, (if that's what you still call them ?)
At the end of the day the crank was stuffed.

[Crasherfromwayback]

I had a mate who put his Mach4 on the beach at Pekapeka in 1972complete with knobblies, (if that's what you still call them ?)
At the end of the day the crank was stuffed.

Probably because it ate sand through bad air cleaner maintenance!

[Reckless]

there was a link to a speedo shot 228k or there abouts

[warewolf]

there was a link to a speedo shot 228k or there abouts

That's why I asked about the speedo drive, because it appeared to follow expected wheelspin dropping off during gear changes. There has to be some significant wheelspin there.

My 640 Adventure was showing 155 km/h from the front wheel when the back wheel was making revolutions for 185 km/h, and that was with a new dedicated mud/sand knobbly at 11psi - about as much grip as I'm ever going to get in the soft stuff. I'd like to know what sort of tyres and pressures he was running, and what sort of wheelspin? The R1 has a much better power-to-weight which might get the chassis "up on the 'plane" as it were, yielding more drive with less resultant wheelspin. I'm curious, because the 640A will do the 185 on the tarseal, so if I can eliminate some wheelspin I'll pick up some top speed.

[Crasherfromwayback]

was with a new dedicated mud/sand knobbly at 11psi - about as much grip as I'm ever going to get in the soft stuff. I'd like to know what sort of tyres and pressures he was running, and what sort of wheelspin?.

Funnily enough, I've always found when running at the beach lowering the pressure fucked a mud/sand tyre, by causing the tyre to 'squish' closing up the knob spacing if that makes sense. Slightly higher pressures to get the tyre to hold it's designed shape and open up the knobs worked much better for me. Around 15-16 psi.