Search found 1510 matches

by scooble
Thu Sep 13, 2018 4:53 pm
Forum: Projects
Topic: Kr1s zx hybrid
Replies: 11
Views: 602

Re: Kr1s zx hybrid

a 160 does fit a KR1 swingarm, I've done it on mine, and so have others
by scooble
Wed Sep 12, 2018 6:46 pm
Forum: Projects
Topic: Kr1s zx hybrid
Replies: 11
Views: 602

Re: Kr1s zx hybrid

A 160 tire fits just fine on a 4.5" rim without any need to offset the front sprocket
by scooble
Sat Aug 25, 2018 4:19 pm
Forum: Non KR Stuff For Sale
Topic: Various 2 stroke bodywork
Replies: 0
Views: 370

Various 2 stroke bodywork

1994 - 1997 APRILIA RS125 NOSE FAIRING - £25 Original nose fairing. Headlight filled in for racing. Hole drilled in the front for an action cam. No cracks, but does have paint chips and minor scuffs. https://scontent.flhr4-1.fna.fbcdn.net/v/t1.0-0/q91/p417x417/40027882_2315003841860267_1824286658896...
by scooble
Thu Jul 26, 2018 11:53 am
Forum: Engine
Topic: Squish clearance and compression ratio - advice please!
Replies: 31
Views: 3330

Re: Squish clearance and compression ratio - advice please!

I've inputted all the standard data and this is what I get for a Conical head. and this is what I get; Calcs I am only interested in the squish angle. When Bob Farnham did my head, he said he set the squish to 17Degrees (although I haven't measured it myself), however, the spreadsheet recommends 13....
by scooble
Mon Jul 23, 2018 2:24 pm
Forum: Engine
Topic: Squish clearance and compression ratio - advice please!
Replies: 31
Views: 3330

Re: Squish clearance and compression ratio - advice please!

According to the default figures in 'JanBros 2stroke Head Calc B', the Piston Dome Radius is 197mm and the piston dome height is 2mm. I assume the the spreadsheet then calculates the tangent, and then subsquently the corresponding correct squish angle. The default sqish angle according to this sprea...
by scooble
Tue Jul 03, 2018 11:46 am
Forum: Engine
Topic: Squish clearance and compression ratio - advice please!
Replies: 31
Views: 3330

Re: Squish clearance and compression ratio - advice please!

I have a copy of the latest Head Calcs spreadsheet. I'd like to set it up using standard pistons.
Please could someone tell me what the standard piston dome radius is, as well as the standard conrod length, and all the other input data needed for a standard engine.
by scooble
Mon Apr 30, 2018 1:54 pm
Forum: Projects
Topic: Shrinking a 300 to a 250
Replies: 34
Views: 2703

Re: Shrinking a 300 to a 250

I'd be interested in the 300 kit for racing
by scooble
Tue Apr 03, 2018 8:52 am
Forum: Chit Chat
Topic: who is interested in a CNC head with inserts ?
Replies: 109
Views: 15447

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

I purchased one of these swanky looking CNC head and gave the whole lot to Pete Odell in Peterborough, who subbed it out to mate, the upshot is that his mate has ruined the blank inserts that came with the head. Therefore, could someone please send me the correct Dimensions for the inserts so I can ...
by scooble
Mon Jan 29, 2018 2:40 pm
Forum: Projects
Topic: Rgv swinging arm.
Replies: 1
Views: 414

Re: Rgv swinging arm.

I fitted a P swingarm to mine (sold it later as it wasnt eligible to race with). It goes in nicely with some minor spacers at the front. I had a new tie rod bearing housing made up and welded onto the bottom of the swingarm in the same position as the original KR1 one in order to maintain the levera...
by scooble
Wed Dec 20, 2017 2:38 pm
Forum: Chit Chat
Topic: Is it me ?
Replies: 15
Views: 1430

Re: Is it me ?

I think both have their specific niche to fill. For general chit chat about bikes and showing off pictures, etc, FB is great, however for more indpeth technical discussions and the archive of relevant information, then specific forums are the way to go, as the subjects tend to be assigned to specifi...
by scooble
Thu Sep 14, 2017 1:27 pm
Forum: Brakes
Topic: Cracked Disc
Replies: 13
Views: 2715

Re: Cracked Disc

Galfer discs
Braking
All Bike Engineering
Black Shadow
ISR
Brembo
by scooble
Fri Sep 08, 2017 7:59 pm
Forum: Chit Chat
Topic: Carbon wheels / fitment
Replies: 14
Views: 1815

Re: Carbon wheels / fitment

I think Ben (Luders) fitted a 5" dymag to his race bike
by scooble
Wed Sep 06, 2017 6:23 pm
Forum: Chit Chat
Topic: Carbon wheels / fitment
Replies: 14
Views: 1815

Re: Carbon wheels / fitment

I fitted a CBR1000 Dymag Carbon Fibre front wheel to my KR1.
With custom discs made to fit.
Image
by scooble
Thu Aug 31, 2017 6:43 pm
Forum: Electrical
Topic: Aftermarket coil question.
Replies: 1
Views: 468

Re: Aftermarket coil question.

I've fitted a Nology coil (haven't tested yet as the engine is still away),
see details here
by scooble
Sat Jul 01, 2017 12:38 pm
Forum: Bodywork
Topic: Radiator bungs
Replies: 3
Views: 959

Re: Radiator bungs

I used a couple of AFR probe bungs. I think they are a standard size, possibly M18