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Thread ID: 118666 2011-06-15 23:09:00 New 2 stroke Cicero (40) PC World Chat
Post ID Timestamp Content User
1209525 2011-06-15 23:09:00 Another motor due out soon?

goo.gl
Cicero (40)
1209526 2011-06-15 23:42:00 Interesting Video. Might be tricky for access to change the rings, with those big con-rods flanking the pistons. kahawai chaser (3545)
1209527 2011-06-15 23:43:00 I like the concept.

Have some suspicion that the piston on the far side from the crankshaft may have some twisting/torsion issues to overcome.

There's also the greater mass in the con-rods for the far piston (much greater mass) which may have the potential to do weird things to it.
Paul.Cov (425)
1209528 2011-06-16 09:21:00 Looks good to me. Now's the time to get it right & if they can get it to run 100% on hydrogen, hydrogen on demand would be best, say goodbye to oil companies Phil B (648)
1209529 2011-06-16 12:03:00 Good luck burning hydrogen in anything similar to an internal combustion engine, it will quite happily melt steel. ubergeek85 (131)
1209530 2011-06-16 12:55:00 Why would hydrogen melt steel? The temperatures generated through combustion are not that different to petrol. Mix it with oxygen like you do with oxygen & acetylene & it'll melt just about anything. Phil B (648)
1209531 2011-06-16 21:12:00 Good luck burning hydrogen in anything similar to an internal combustion engine, it will quite happily melt steel.

The heat is taken out of the burning fuel to make the engine work, excess heat can be taken away with cooling.
prefect (6291)
1209532 2011-06-17 00:24:00 Interesting Video. Might be tricky for access to change the rings, with those big con-rods flanking the pistons.

When was the last time you heard of the rings being changed on a modern car? With only average care and servicing, the modern motor will outlast the bodywork. 200-300,000km is common without any attention beyond regular servicing.

How modern materials and lubricants have made the motorist's life easier:

From my father's 1950's Hillman Minx handbook:

320km: Top up oil (now no need to check between 10,000km services.)

800km: Lube steering and front springs

1,600km: Grease steering rack

2,400km: Repeat 800km

3,200km: Change oil, fill rear axle & steering box, check gearbox, oil front and rear springs. Oil clutch mechanism, grease brake cables, lube anything else that moves!

10,000km: Drain and replace all fluids including gearbox and rear axle, flush radiator etc. etc.

15,000km: Everything as before plus head off, valve grind, wheel alignment and top up shock absorbers!

Start again at Go.

Our garage at home had a mechanic's pit, not at all uncommon in those days.

Cheers

Billy 8-{)
Billy T (70)
1209533 2011-06-17 02:09:00 Not only a pit ~ belts of varying sizes and condition hanging on nails, a wide variety of number plates in assorted colours, healthy supplies of spare lamps, an industrial grade battery charger, plenty of drip trays and a collection of gaskets close to the collection of workshop manuals.
Some people these days have neither split pins nor fibre washers in their car shed, nor can one find the tire levers, the tire pump or the puncture repair kit. Mon Dieu!
R2x1 (4628)
1209534 2011-06-17 04:13:00 When was the last time you heard of the rings being changed on a modern car? With only average care and servicing, the modern motor will outlast the bodywork. 200-300,000km is common without any attention beyond regular servicing.

How modern materials and lubricants have made the motorist's life easier:

From my father's 1950's Hillman Minx handbook:

320km: Top up oil (now no need to check between 10,000km services.)

800km: Lube steering and front springs

1,600km: Grease steering rack

2,400km: Repeat 800km

3,200km: Change oil, fill rear axle & steering box, check gearbox, oil front and rear springs. Oil clutch mechanism, grease brake cables, lube anything else that moves!

10,000km: Drain and replace all fluids including gearbox and rear axle, flush radiator etc. etc.

15,000km: Everything as before plus head off, valve grind, wheel alignment and top up shock absorbers!

Start again at Go.

Our garage at home had a mechanic's pit, not at all uncommon in those days.

Cheers

Billy 8-{)

Well never heard for a modern car rings being changed, if well maintained, serviced and driven with care. But I popped rings for engines that had fault, e.g. valve float, damaging piston, or bent con-rod I did once with my uncle (Though 80's fords). In that respect it's what I meant for relative ease (or lack of as it appears in the video) of removing rings. Also for general rebuilding of inserts/rings into the block, which rodders/enthusiasts might do, and which I did a little - mainly for selling point.
kahawai chaser (3545)
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