Search found 2924 matches

by JanBros
Wed May 23, 2018 8:18 pm
Forum: Chit Chat
Topic: Trackday preparation
Replies: 6
Views: 88

Re: Trackday preparation

front 2.3 bar, rear 2.2 bar, that's what I always use, with any bike, track or street (but I only ride for fun, so my street-pace isn't much slower).
by JanBros
Sun May 06, 2018 2:48 pm
Forum: Engine
Topic: reverse gear selector ? race box ?
Replies: 3
Views: 242

Re: reverse gear selector ? race box ?

ride without the cover ? myself I can't be bothered to put it back on, and I run a normal pattern.
by JanBros
Sun May 06, 2018 2:45 pm
Forum: Chit Chat
Topic: Plated Barrels
Replies: 12
Views: 437

Re: Plated Barrels

heat discipation from sleeve to alu is much less.
by JanBros
Tue May 01, 2018 9:17 am
Forum: Engine
Topic: reverse gear selector ? race box ?
Replies: 3
Views: 242

Re: reverse gear selector ? race box ?

you have to flip the link on the lever or the shaft (1 of them, not both) 180°
by JanBros
Mon Apr 30, 2018 8:20 pm
Forum: Projects
Topic: Shrinking a 300 to a 250
Replies: 15
Views: 972

Re: Shrinking a 300 to a 250

I'd be interested in the 300 kit for racing A KR is already oversquare. going even bigger on the bore means you will have even less time-area to fill the cylinder. in cc, the increase of the bore is squared (Pi*D^2) ; but on your port-real-esate-side, the bore increase is only single (Pi*D) -> the ...
by JanBros
Sun Apr 29, 2018 9:45 pm
Forum: Projects
Topic: Shrinking a 300 to a 250
Replies: 15
Views: 972

Re: Shrinking a 300 to a 250

if you do not change the KIPS links and control wheels, you should only use 2 F3 KIPS valves. if you want to use 4, they should turn in opposite directions in each cylinder.
by JanBros
Tue Apr 24, 2018 11:05 pm
Forum: Chit Chat
Topic: who is interested in a CNC head with inserts ?
Replies: 109
Views: 13995

Re: who is interested in a CNC head with inserts ?

gave her all the dimensions ;-)
by JanBros
Thu Apr 19, 2018 8:28 pm
Forum: Grumpy Old Men
Topic: I'm getting old
Replies: 5
Views: 516

I'm getting old

maybe too old for KR's :x well, it's not actualy my age, more my physical agility that's becomming a problem. did a 500km trip today, but my leg's don't apreciate it so much as they used to, KR's are so small :mrgreen: will I buy another bike ? hell no :twisted: should I work on my condition ? naah ...
by JanBros
Fri Mar 30, 2018 8:53 pm
Forum: Projects
Topic: My New KR1s Project
Replies: 9
Views: 396

Re: My New KR1s Project

Binetta Steve wrote:
Fri Mar 30, 2018 5:43 pm
Schoolboy error on my behalf I didnt see the belly pan. The front pipes look different to mine, but it’s probably the angle of the camera.
nothing to do with the camera, first time I've seen these pipes.
by JanBros
Wed Mar 28, 2018 7:19 pm
Forum: Projects
Topic: My New KR1s Project
Replies: 9
Views: 396

Re: My New KR1s Project

top priority : exhausts that actualy look nice :mrgreen:
by JanBros
Tue Mar 27, 2018 7:39 pm
Forum: Projects
Topic: Kr1 b2
Replies: 3
Views: 239

Re: Kr1 b2

podman wrote:
Mon Mar 26, 2018 9:45 pm
a set of aftermarket pipes on either is always nice to have anyway..
only for the sound or weight, as the originals are VERY good and it's not easy to outperfrom them.
by JanBros
Sun Mar 25, 2018 6:37 pm
Forum: Steering and Suspension
Topic: Fork Spring Length?
Replies: 2
Views: 177

Re: Fork Spring Length?

checked my manual : KR1 springs are 450, service limit is 442. the inner legs are interchangeable, so that might be a possibility. Then in the KR1S manual I have, indeed it says 468mm, but someone drew a line through that and wrote 438 next to it. and as service limit he wrote 429mm ?? he also chang...
by JanBros
Sat Mar 17, 2018 9:47 am
Forum: Electrical
Topic: 6v on cable
Replies: 5
Views: 1123

Re: 6v on cable

it's possible you have a high resistance in the wire (bad connectors/...) you can check this by placing both pins somwhere along the wire : it should reed 0V. if you do reed for example 2V, that means there is a resistance between the 2 measuring points. bringing the measuring points closer together...
by JanBros
Sun Mar 04, 2018 11:21 am
Forum: Engine
Topic: combustion chamber profile for pump petrol road
Replies: 1
Views: 211

Re: combustion chamber profile for pump petrol road

it all depends a bit on the timings of your engine, and whether you want high power, more midrange, ... http://users.telenet.be/jannemie/JanBros%202stroke%20Head%20Calc.xlsm squish area 40-50%, high revving engines/power more like 40. squish height minimum 1% of stroke, but to be on the safe side I ...
by JanBros
Sat Feb 10, 2018 1:18 am
Forum: Steering and Suspension
Topic: Standard Fork Set Up ??
Replies: 2
Views: 239

Re: Standard Fork Set Up ??

you'll have to figure that out for yourself. if you have no clue, stick to what the manual says. if you feel like the front is dancing over bumps, use thicker oil. if you feel it is to uncomfortable , use thinner oil. pre-load only set's the negative suspension travel, and not the stiffness of the s...