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Re: KX500 water pump modification
Posted: Sun Mar 24, 2013 5:04 am
by Sandblaster
Motorrad wrote:Sandblaster wrote:
Somthing I have been wanting to do.
is install a temp probe. instead of my Under the plug one that Digatron supplys.
Was thinking of welding a bung on the head, right at the output elbow...
just need to find a sensor etc that will talk to the digitron.
That would be cool... literally and figuratively.
I'm also wondering if we shouldn't clean up the casting imperfections on the impeller..
- cleaning up the slag...png (711.96 KiB) Viewed 12602 times
I know it's a small thing but I bet they all add up..
Besides the kx500 I'm sure a lot of other bikes could benefit from these mods.
Re: KX500 water pump modification
Posted: Mon Mar 25, 2013 5:04 am
by Motorrad
what is the drive ratio of the waterpump on the KX?
quick. I have an idea.
Re: KX500 water pump modification
Posted: Mon Mar 25, 2013 5:47 am
by Sandblaster
Impeller speed vs crank speed?
Re: KX500 water pump modification
Posted: Mon Mar 25, 2013 5:53 am
by Motorrad
Sandblaster wrote:Impeller speed vs crank speed?
Yup..
kinda like my KTM is driven off the cam.. direct.
Re: KX500 water pump modification
Posted: Mon Mar 25, 2013 6:10 am
by Sandblaster
Off the top of my head.... I'm going to bed.
I'll let you know tomorrow... If you don't already know...
Re: KX500 water pump modification
Posted: Mon Mar 25, 2013 3:16 pm
by Qsixteen
crank 13
impeller shaft 11
Re: KX500 water pump modification
Posted: Mon Mar 25, 2013 3:33 pm
by Sandblaster
10-4 on the impeller gear... I had that number last night
Haven't made it to the shop yet for the crank
Yep, 13T on the crank.
0.84615384615384615384615384615385 :1 Or something like that
Re: KX500 water pump modification
Posted: Mon Mar 25, 2013 6:31 pm
by Motorrad
Sandblaster wrote:10-4 on the impeller gear... I had that number last night
Haven't made it to the shop yet for the crank
Yep, 13T on the crank.
0.84615384615384615384615384615385 :1 Or something like that
hmm so they spin significantly faster than most 4 stroke impellers .5:1
Re: KX500 water pump modification
Posted: Mon Mar 25, 2013 8:51 pm
by Sandblaster
Didn't know this till a few minutes ago but regarding the water pump cover, the area just past the impeller is smaller then the outlet side.
- WATER PUMP.JPG (56.67 KiB) Viewed 12575 times
I know I'm throwing more pennies at a million dollar problem but sooner or later the pennies should equal a buck or so
Re: KX500 water pump modification
Posted: Mon Mar 25, 2013 10:12 pm
by Qsixteen
Or soon you will have the one million dollar issue fixed and it will be in your hand.
