KR-1S.co.uk Forum

accept for having bought an RGV-rear wheel, no

first the SV-project, but I've got too much other things to do for the moment

Is the SV project running yet Jan ?

if anyone fancies doing something similar theres a h***a cr500 at the moment on ebay

Have you been on the h***a forum again Col ?

Much respect! I've ridden a '79 suzuki RM400 (but im only 18 ), and that was awesome, but vibey, and was sucking air somewhere so i sold it.. I've always wanted an AR50! The 500 should be well tuneable, especially with a different pipe.. Just got to watch the big two stroke thingy where they bound forward on a shut throttle... bing, bing, bing.... haha

KX Motor
60-65 hp stock
Easily tunable to 80+?? Power Delivery issues? Higher peak means snappier delivery.
Remember that while it doesn't make much more peak HP stock than a tuned KR1, it has so much more torque its not funny

The Beast I build :
I'm leaving the motor near stock- got a wiseco Hot Rod and forged piston in it,FMF Gnarly Desert, Digital temp guage and Scitsu tacho. Some piston mods ala stewart off the KXriders forum
Work in Progress

I'll look at putting a Pro Circuit pipe and lectron 44mm carb on it, perhaps raise cylinder slightly so It'll rev easier.

You want to mill a groove in the carb, so that the engine doesn't heat up too much when you shut the throttle at revs and bung the needle back into the hole, stopping the flow of fuel- the groove goes from the main jet orifice to the neck... Towards the motor. Got this one off Dennis Ireland. He had a really cool carb off one of his RG500's

He also reckoned that an EGT was the way to go, so that you can fiddle with your carb settings to work on not having it sieze when you shut the throttle...

Good luck with your beast, and enjoy...

See this site: HEEEEEPs of really useful info...
http://www.kxriders.com/forums/index.php?board=4.0

And in particular, this thread:
http://www.kxriders.com/forums/index.ph ... 839.0.html

These are also interesting:
http://www.kxriders.com/forums/index.ph ... 871.0.html
http://www.kxriders.com/forums/index.ph ... 158.0.html

Then theres these ones...
http://www.apriliaforum.com/forums/show ... light=rs50

http://www.rgv250.co.uk/forums/index.ph ... 16360&st=0

Or this one.

http://www.usa2strokers.com/forum//foru ... 24375&PN=1

I like =D>
Would like to see more of the engine mounting [-o<



looks very tidy though

Some bits:

http://www.htgracing.com/fuel.php
for Lectron carbs- Incl 44, 48 and 50mm

http://www.exhaustgas.com
For EGT guages

frame arrived today

looks good, only the front bold for the engine won't go in, bit it's only a matter of 1/10th of mm's.











RGV swing arm, rear suspension WP NSR400, got already ZXR400L forkes ...

but it'll have to wait until my other projects are running


btw : subframe has been cut off with my permission, otherwise it would have been too big/expensive to ship

workmanship looks second to none, are you gonna get sprockets made in order to up the gearing? im very much looking forward to seeing this evil monster on its wheels.

mgtkr1 wrote:are you gonna get sprockets made in order to up the gearing?

ask me again next year

rebuild the entire rear suspension this WE, since I realised that with my previous design, there was no space left for an airbox , which is absolutly nescassary on certain tracks to keep the noise down.

so redesigned it with an R6 shock, a FZR400 knuckle (I thinck )and streched tie-bars :



and now there is room for an airbox :



and since the KX doesn't need a battery, I'm going to stretch it into the battery case and use al available space under the seat.