Final KR Based Race Bike Project

Show us that box of bits in your shed!
User avatar
JanBros
Avgas Sniffer
Posts: 3306
Joined: Wed Jul 26, 2006 11:50 pm
Location: the land of Francorchamps

Re: Final KR Based Race Bike Project

Post by JanBros »

what a nice sound from that airbox 8)

happy that you found it easy to get the head working, and finaly I can stress a little less now that someone else has it working to O:)

So when can I come over and steel your bike :?: :mrgreen:
My ultimate goal is to die young as late as possible !
Luders
Avgas Sniffer
Posts: 3926
Joined: Fri Jun 18, 2010 11:29 am
Location: Oxfordshire

Re: Final KR Based Race Bike Project

Post by Luders »

The longer rods, carbs, airbox and little flywheel give it a different sound and feel. It's much free'r revving without that mahousive standard flywheel and the mechanically driven water pump removed. Glad you're pleased to see your work put to use Jan. I guess I'm the first (other than yourself) to fit a fire up the engine with one of your heads.
User avatar
JanBros
Avgas Sniffer
Posts: 3306
Joined: Wed Jul 26, 2006 11:50 pm
Location: the land of Francorchamps

Re: Final KR Based Race Bike Project

Post by JanBros »

Luders wrote: I guess I'm the first (other than yourself) to fit a fire up the engine with one of your heads.
guess to, that's what I was referring to about the stress. raising your own baby is always easier than handing it out to someone else, as you have seen it grown and know it much better. Guess I raised it well =D> :mrgreen:
My ultimate goal is to die young as late as possible !
Luders
Avgas Sniffer
Posts: 3926
Joined: Fri Jun 18, 2010 11:29 am
Location: Oxfordshire

Re: Final KR Based Race Bike Project

Post by Luders »

I know you have invested a lot of time and effort in developing the head. Going back a good few years to the modified standard head, where it all started. It all pays dividends in the end.
mavesyn
Newbie
Posts: 22
Joined: Wed Jun 24, 2009 10:40 am
Location: Staffordshire

Re: Final KR Based Race Bike Project

Post by mavesyn »

Sounds fantastic....
Luders
Avgas Sniffer
Posts: 3926
Joined: Fri Jun 18, 2010 11:29 am
Location: Oxfordshire

Re: Final KR Based Race Bike Project

Post by Luders »

If I get chance today, I'm going to do a bit of fine tuning on the setup before putting it through the 3rd head cycle.

Here's the 2nd video with my mate warming it up so I could get a better shot of the bike.

https://www.youtube.com/watch?v=f057euQaOcs
jarno
Oil Injector
Posts: 706
Joined: Sat Aug 08, 2009 9:29 pm
Location: the netherlands

Re: Final KR Based Race Bike Project

Post by jarno »

Ben at what rpm do the valves open i saw in the video that the opened quickly.
Kr1s C1 zeus blue
Kr1s c2 black green
ZXR400 SP
ZXR250A
Luders
Avgas Sniffer
Posts: 3926
Joined: Fri Jun 18, 2010 11:29 am
Location: Oxfordshire

Re: Final KR Based Race Bike Project

Post by Luders »

I donno why they were doing that, I obviously need to look at the software and ignition setup. That was one of the issues on the list of things I want to look at before the next heat cycle.
fred
Oil Injector
Posts: 926
Joined: Sat Mar 22, 2008 5:42 pm
Location: retford n,nott`s working in cotswolds
Contact:

Re: Final KR Based Race Bike Project

Post by fred »

Great work jan ,i cant imagine how many hours youve put in,what's the old saying neccesity is the mother of invention,and sussing the jigs out to hold it down is another job altogether,good to hear her running ben
User avatar
500bernie
Avgas Sniffer
Posts: 3396
Joined: Mon Aug 02, 2010 10:22 am
Location: Teesside

Re: Final KR Based Race Bike Project

Post by 500bernie »

Wow she sounds as good as she looks 8)

Awesome piece of design work Jan =D>
Firecracker Red and Grey C3 300
TwoStroke Institute
Oil Injector
Posts: 505
Joined: Sat Jul 05, 2008 2:17 pm

Re: Final KR Based Race Bike Project

Post by TwoStroke Institute »

Sounding more like it should will get even sharper than that once you start to dial the carbys in. You really should be riding the bike to heat cycle I do 3 X 5 min 1st to 1/3rd throttle roll on roll off, 2nd to 2/3rds throttle last go for the doctor. EGT probes are a bit far down the pipes but you still should get an idea. You should be proud of that build best sounding KR-1 ever,sounds just like a TZ......but better.
crochet & croquet
Luders
Avgas Sniffer
Posts: 3926
Joined: Fri Jun 18, 2010 11:29 am
Location: Oxfordshire

Re: Final KR Based Race Bike Project

Post by Luders »

Made a few adjustments over the weekend, but it's still too rich.

http://youtu.be/jng8qx8fcGI
User avatar
500bernie
Avgas Sniffer
Posts: 3396
Joined: Mon Aug 02, 2010 10:22 am
Location: Teesside

Re: Final KR Based Race Bike Project

Post by 500bernie »

Very nice Ben 8)
Firecracker Red and Grey C3 300
User avatar
Binetta Steve
Oil Injector
Posts: 949
Joined: Sat Nov 10, 2012 6:13 pm
Location: North Wales

Re: Final KR Based Race Bike Project

Post by Binetta Steve »

Ben that sounds so sweet
steve
KR-1R
Premix Junkie
Posts: 1587
Joined: Wed May 16, 2007 2:24 am

Re: Final KR Based Race Bike Project

Post by KR-1R »

Sounds like two kx125s making sweet love
Post Reply