Thought i would put up some pics of the early evolution of suzuki strokers. This is my 76 gt500 aircooled and piston ported, no powervalves no AEC no oil scavenging. Directly oil injected, two hoses to the cylinder wall and two to the outside cank bearings (refer to opencrankcase pic yellow circles that match to the outside oil lines), the middle one being oiled from the gearbox (green circle). If you were to do an outside crank seal the pressure from your crank blows the gearbox oil out your breather hole, and if you do a seal on the centre bearing you suck gearbox oil up the spout and your bike makes some serious smoke. this then evolved into all the crankbearings being oiled from the gearbox such as in the later models 79 GT250 x7 the RG 250 and RGV 250. This then make the oil injection system an extremely simple and effective and reliable low pressure oil pump just dripping oil into the gas flow between the carb and cylinder..
I find understanding the 2stroke evolution give so much understanding into the more modern engines, anyone interested in more comparison between old and new?
Would the Pope be catholic and Nuns female?
Do Bears poop in woods?
For a real bit of interest look up SILK for some Enlish interpretation on how a 2 stroke should work.
2 strokes were originaly a simple way of providing transport, then slowly but surely were developed as a means of racing/sports machine.
Now, through scooters back to easy/simple transport.
The polution side of them makes it unatractive (at the moment), till it is sorted propperly, they will dissapear more and more.
Diesel also has a 2 stroke- and a 4 stroke variety with a similar problem.
Number one early seventies was written off production racing at Manfield in NZ and rebuilt from a wreck. That bike was very fast and topped out at 125 mph.
When wife number one left, I swapped her dishwasher for a GT 500. The GT 500 to me promised a lot but was in a lower state of tune.
I only have one pic I can find of the GT and this was a winter ride from Bunbury to Kalbarrri.
With bags the bike was making around 25 MPG and just reaching service stations with an empty tank. The gear box went North of Yanchep but I made it back to Bunbury where I found the new chain with O rings had worn through the gear box seal!
Cheers
Graelin
Last edited by Graelin; 12-07-2008 at 06:13 AM.
Reason: scanned photo to improve it
This is my old one bought new in 1985 for $3999 in Perth
The actual house/land was bought for $36000 in 1983, pool and pavement, improvements were all extra
110 squared 3 bed/1 bath Plunkett build on 840mSq block over looking the surroundings
I want to travel back in time to get myself some more RG's
As jamathi said, 2 strokes are currently unfashionable, but it would not surprise me to see them come back into favour if there was the relevant technological advancement. In terms of weight for power they're inherently pretty efficient, solving the problems is an engineering exercise....
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310rwhp 180sx for sale. most bolt ons (turbo, injectors, ecu, brakes, suspension, etc), $11k. pm for details
Yes, Australia was a forerunner in diesel development in the 193ish.
I have the last surviving, selfstart 2 cilinder 12 HP Southern Cross diesel Stationairy engine in complete perfect running order.
It is a very significant one in the history of engineering in Australia.
A couple I took from years ago - Graeme Crosby at Pukekohe on an H1R - about Jan 75
In the Auckland University bike club, we used to go up Muriwai Beach, lay out a circuit and organise races - great fun - heres a mate on his 500 Kwaka - mid 1971
__________________ "Give a man a fire and he'll be warm for a day. Set a man on fire and he'll be warm for the rest of his life"
Remember your roots
- same time.
