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550K3 cylinder compression

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Bryanj:
If you do it will not accelerate very well, the overal gearing is very similar to the 500 as although the sprockets are different so is the primary gear ratio.
In the original 500 handbook it says it is not advisable to rev out of the top of the red band! These fours really need buzzing  over 6-7 grand to keep going and are happy cruizing in the same range

nairb:
A final comment.... the k3 has now done some 750 miles since being brought back to life.  In the last 15 or so years I have mainly rode a bunch of Suzuki triples, a couple of parallel twins - xs650 & cl450 with a cb360 thrown in for a change.

It has to be said that the k3 is turning out to be very civilized.  No great cloud of blue 2-stroke smoke.  It dosent send the cattle running for cover in the fields.  Dosent clatter and bletch great clouds of smoke in the small country villages.  I had forgotten what a different riding experience a 4 cylinder 4-stroke can be.

Having said all this I still keep trying for a 6th gear and concerned that its revving to high.  No doubt I will get used to its style.  Maybe its time to take a triple out for a day to get the perspective back.

Nairb   

Johnny4428:
Hi Nairn, mine is also done 730 ish miles since rebuild, I am enjoying my K3 now as much if not more than I have ever done and I’ve owned the bike for 35 years. As Bryanj said on this forum these bikes prefer the higher Rev bands. That’s probably why the gearing is the way it is so these things are revving into their comfort zone. Although 60 mph mine is just over 4000rpm. Not sure of accuracy of gauges. Great bikes and underrated in IMO.

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