KR-1S.co.uk Forum

Hi. Rotary disks were badly damaged beyond use.
both disks were removed together with small reed plates adjacent to it,
better say PRIS system was deleted. 'Yamaha YB125 super' reeds was
selected(had to do some grinding on reed plate stops) and fitted in
designed housing which was installed between engine and carb.
Due to this had to forget the original air filter casing and use individual
paper filters for the carbs. Engine is starting and running normaly.

Just read about all the mods youve done (well the ones youve listed so far), and I'm in awe of what youve managed to do. The bike looks great in the pic you posted in the Tandem Twin Owners post, but the ones youve put here don't seem to work for some reason. Can't wait to see some more pics of your bike, as it looks fantastic!

ScottaKR wrote: The bike looks great in the pic you posted in the Tandem Twin Owners post

that one has disappeared unfortunately

Charles

The new links you posted work a treat. Thanks.
What is the bodywork off?
I notice that it's the rare KR250S powervalve motor at that. Lucky sod.

Many thanks for the complements, yes Sir she's KR250S.

Below is the list of parts used in this bike:

-Speedometer+radiator: Suzuki RG250.
-4Turn signal lits+2 stroke oil tank: Kawasaki KDX 200S.
-Engine oil cap: Kawasaki AXM 100.
-Kick start shaft & crank: Combination of KR250 &
h***a CG 125.
-Speedometer cable: Modenas criss 110, modified.
-Pistons: Yamaha YB125 super, spacer were put beneath
cylinders.
-Front lit + holders: Bajaj 180 pulsar(Indian bike).
-Top of the front lit fairing: h***a XL 250, modified.
-Handle bar rubber grips+main lit switch on right handle bar
+horn: h***a 125 wave.
-Fuel tank cover+rear lit+front & rear seat+seat cover+left handle
bar switches+front & rear foot rest+rear fender+engine lower fairing
+side fairings, some modified: Daelim roadwin 125.
-Accelerator & shock cables: Kawasaki GTO 125, modified.
-Water temp. sensor: Kia pride(car).

Other things done:
-Chassi modified in several places.
-Fuel tank made.
-Battery housing made to accept larger battery in case a fan needed for
the radiator in future,(fan belongs to Kawasaki GPZ400).
-Water pump mechanical seal removed, 2 rubber seals fitted, one
for water side, one for oil side.
-Anti dive system blanked.

Why would you ever want to get rid of the disc valve? Disc valve engines are way better than reed engines

Personal reasons:
1. My discs were badly damaged.
2. No spares available were I live.

Technical reasons:
3. Disc is a moving part, moving part usualy wears out earlier.
4. For inspection/renewal reed does't neet major engine dismantling, only carbs to be removed!
5. Deffective reed is more detectable than deffective disc.

Good..