So this now has an MOT...

MarJay · But it's British! Joined: 15 Sep 2003 Karma :

https://www.bikechatforums.com/files/09-08-24.jpg

It only took a full top end engine rebuild and complete brake overhaul...
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British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.

Robby · Dirty Old Man Joined: 16 May 2002 Karma :

About fucking time.

CaNsA · Super Spammer Joined: 02 Jan 2008 Karma :

Update your sig.

Ste · Not Work Safe Joined: 01 Sep 2002 Karma :

blurredman · World Chat Champion Joined: 18 Sep 2010 Karma :

Ste · Not Work Safe Joined: 01 Sep 2002 Karma :

On a desktop or laptop I'm still not interested in multi coloured walls of text signatures listing bikes owned over possibly decades along with the dates they did their CBT, their theory test, mod 1, mod 2 and whatever other irrelevant information.

Nobody wants to see that attached to every single post.

blurredman · World Chat Champion Joined: 18 Sep 2010 Karma :

I don't mind - the Internet is full of archive. At this point it's purpose is to annoy. Laughing

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CBT: 12/06/10, Theory: 22/09/10, Module 1: 09/11/10, Module 2: 19/01/11
Past: 1991 Honda CG125BR-J, 1992 (1980) Honda XL125S, 1996 Kawasaki GPZ500S, 1979 MZ TS150.
Current: 1973 MZ ES250/2 - 17k, 1979 Suzuki TS185ER - 10k, 1981 Honda CX500B - 91k, 1987 MZ ETZ250 (295cc) - 39k, 1989 MZ ETZ251 - 50k.

A100man · World Chat Champion Joined: 19 Aug 2013 Karma :

MarJay · But it's British! Joined: 15 Sep 2003 Karma :

https://www.bikechatforums.com/files/kr1s.jpg

I managed to get a couple of riding pics of the bike (and me). It rides nicely, but the clutch lever feels weird. I found that the clutch lever pivot is 7mm in diameter, but the clutch lever pivot hole is 8mm so I'm going to make up a brass bushing to take up this slack. The brakes go nearly all the way back to the bar, but once they engage they feel good and work spectacularly well for a bike from 1990. This'll be the brand new pistons, cleaned up calipers and new fluid.

The original brake pistons had inserts in them that looked like fibre or ceramic, and the replacements don't have those, so that might feasibly affect the brake travel.

Also, considering it has weird tyre sizes it handles nicely. It took a bit of recalibrating to work out how the bike wants to be ridden, but now I've got it a bit the bike is great fun.
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British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.

redeem ouzzer · World Chat Champion Joined: 06 Oct 2015 Karma :

The Tokico calipers are a weird one. My friend who has a KR1S has had constant issues with the lever travel increasing following a refresh which he's never really got on top of, even using genuine seals. May be master cylinder related as my GSXR400 race bike uses basically the same calipers and the lever pressure is 100% consistent.
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Be a REAL MAN!

MarJay · But it's British! Joined: 15 Sep 2003 Karma :

sickpup · Old Timer Joined: 21 Apr 2004 Karma :

A100man · World Chat Champion Joined: 19 Aug 2013 Karma :

I replaced whole MC, caliper pistons and seals on teh XJ earlir this year and still no firm lever. Hoses are old but braided and I tried vacuum bleeding and all sorts. In the end I gave up. It's soft but it does at least stop.
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Now: A100, GT250A, XJ598, FZ750

Then: Fizz, RS200, KL250, XJ550, Laverda Alpina, XJ600, FZS600

MarJay · But it's British! Joined: 15 Sep 2003 Karma :

sickpup · Old Timer Joined: 21 Apr 2004 Karma :

If you don't have a set, these might come in handy for the rebuild.

Don't know if you've fitted new pads but I've found older types, 10-15 year older types often felt spongy especially GG rated ones.

MarJay · But it's British! Joined: 15 Sep 2003 Karma :

Ste · Not Work Safe Joined: 01 Sep 2002 Karma :

Is fitting a thicker rotor an option?

MarJay · But it's British! Joined: 15 Sep 2003 Karma :

redeem ouzzer · World Chat Champion Joined: 06 Oct 2015 Karma :

SBS Road pads are the mutts nutts in those calipers.

KR1S forks are indeed piston rod and probably the worse part of the whole chassis setup, however my mate had Maxton wave his magic wand at the forks on his and it took a lot of setting up to get them to work well - dissapointing for £600 odd quid. For the road i'd be tempted to make sure there wasn't too much sag (and change the springs if needed) and chuck fresh oil in and leave it at that.
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Be a REAL MAN!

MarJay · But it's British! Joined: 15 Sep 2003 Karma :

Robby · Dirty Old Man Joined: 16 May 2002 Karma :

I recommend cartridge emulators in damper rod forks. Last set I bought were the YSS ones. They work, changed the front end of my Guzzi from awful to OK.

Also Hagon fork springs, because they will take a plain English explanation of what you want and what you weigh, and provide some suitable springs.

sickpup · Old Timer Joined: 21 Apr 2004 Karma :

MarJay · But it's British! Joined: 15 Sep 2003 Karma :