The new addition - Period 4 - S1 250 triple !!

Here is the birthday present I shouted myself yesterday.............it was listed at the beginning of the week, and looked pretty tidy.

It was also local ( next suburb) - which was very convenient....

It is also eligible for the Period 4 (Post Classic) 250 class - which means I can race it at in the same events as MickLC (and Steve Kairl and also Billy when he is there), but in its own class - which appeals to me greatly

The S1 250 is the smallest of the kawasaki triple family, and was first released in 1972 - (just making it eligible for Period 4.) Here is what a stock S1 looks like............






They run an under-square motor, with 45mm bore and 53.2mm stroke, for a capacity of 249cc. Power output was only 28hp at 8,500rpm. Dry weight was 149.5kg. Light as a feather really !! Top speed (stock) was just under the ton (154kmh). 22mm carbs ! tiny little jiggers they are.......

(Interestingly, the much-more powerful S2A - the 350/3 of 1972 with 45hp - used the same crank (yay) but with a 53mm bore......so a set of S2 barrels can (and indeed will) be fitted to the S1 bottom end.........in the fullness of time.....)


This is what I nabbed off ebay yesterday..........














Went around and had a look at the little jigger this afternoon with PC ( we needed a break from fence patrol ). Old mate selling this could start it with just a push from his arm ! ( he is in a wheelchair recovering from a big bike prang).

The seat/ducktail combo looks much better in the flesh, and I actually felt comfortable sitting on this bike - although that was with stock footpegs which will have to be moved for racing.......

It is pretty rough around the edges though. Needs a massive detail and some work before I can get a roadworthy and concessional rego. But - it runs, idles well, has some great hand-made custom expansion chambers that are all tucked in neatly and sound *phat*. Most of the stock parts are there, although some changes have been made. The bike is fitted with later-model kawasaki mags, with a disc brake front & rear. It is also running larger S2 carbs (24mm). There is a complete Z500 front end that comes with the bike, and a drum-brake rear mag as well. I will have to change the wheels to spoke wheels for P4 eligibility - complete with drum brakes (in better news - P4 bikes can also run on methanol - so I will arrive at a corner far quicker than the P5 bikes - just with no brakes ! )

Spent about twice as much as I usually do on an old dunger - but S1's are pretty thin on the ground these days, especially with hand-made chambers like this - and it's nice to have book-ends in the triple collection.....

See you on the track S c a g

Great pickup mate...good b'day prezzy...

It looks like it has some lovely potential!
Get it out there.

Nice new addition Nothing like buying yourself a birthday present.

Some people wont see past all the bling, glitz and glam, but I do.... AWESOME!!

Nice ride mate, happy birthday... personally, I would have gone with a busa

Nice work, mate.

thats awesome goz looking forward to seeing you out there, its going to be a weapon!

nice Gos - happy belated bday btw

Nice one Gos

Nice pick up Gos, I look forward to the reno thread. Perhaps you will be doing 2 classes, 250 & 750?

nice Gos

but does this mean the Jag gets pushed further back into the shed?

You spoil yourself too much!

Nice pickup Gos, looks the goods for a P4 racer

whats playing the drums got to do with brakes?