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Messages - yojimg

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1
Maintenance and Servicing / Re: More water pump blues
« on: February 20, 2020, 10:13:25 PM »
*Originally Posted by timur [+]
It could be a sum of factors:

 - Older pump use ball bearing packed with grease instead of oil mist lubricated bearing. So it has less surface in contact con hot oil mist and probably runs bit cooler. CBX pump has a lot of oil chanels inside, hollow shaft - all this increases the heat absorption from oil mist.

 - Older pump shaft is solid machined part. CBX shaft has some type of forming in a centre to fix this sort of nut that limits shaft axial displacement (to be fair the entire shaft seems to be some sort of low-fi sh#t). If proper thermal treatment is not applied it can deforms a bit with high temperatures having higher runout than measured at room temp.

- There is another factor - ceramic ring housing inside of impeller. I recall that when I mounted again my pump with new seals it was quite difficult to insert this ring into impeller - the form of the housing makes it difficult. It tends to stay misaligned and this misalignment has the same effect than excesive runout of the shaft (probably will disassemble again the pump I repaired to check it - left it as spar part so can do it in 10 minutes)

Just my penny worth...


Hmm I was wondering if the old-style pump used ball bearings vs. plain bearings.  Thanks for clarifying!

-Jim G

2
Maintenance and Servicing / Re: More water pump blues
« on: February 20, 2020, 01:38:28 AM »
*Originally Posted by Neox [+]
Not sure...
The pump is at the same place since the first CB500, in 1993.
And the first CB had no kind of failure with the pump. I remember driving so long time on german highway trafic jam with the fan never stopped and 35įC with so much sun :087:.
And no problem with the coolant system.
Nice thing, coolant thermometer on the 500S instruments. so you can see if it's cold, hot, or to hot!
Nothing ont the 500X, impossible to know the temperature... too bad...

Hmm.  The water pump from the 1993-2003 CB500s certainly looks similar:

from https://www.ebay.co.uk/itm/Honda-CB-500-PC26-PC32-Water-Pump-Water-Pump/143459533675?hash=item2166dac36b:g:7xwAAOSw8A1d5Q74





Aside from the stubby drive shaft vs. the long one on the 2013+  models, I wonder what's different to make these pumps longer lasting?

-Jim G


3
On Two Wheels / Re: We Hates Him
« on: February 18, 2020, 10:18:41 PM »
*Originally Posted by Swanny [+]
The Australians do it best    :745:


Read the caption under the video on Youtube:

"This man filmed himself speeding down the cycle lane, as two cyclists ride side by side in the road. As he passes them, the man hurls abuse towards the two men. Turns out they were both cops. That's why one of the cyclists wanted him to pull over to have a chat. He eventually handed himself into the police. The man has been issued a court attendance notice for a number of offenses, including using his mobile phone while driving, offensive language and for driving on the path."

4
Maintenance and Servicing / Re: More water pump blues
« on: February 17, 2020, 04:27:00 PM »
*Originally Posted by racer [+]
Try putting a dial indicator on the shaft and rotating it.  I'll bet you will find your problem lurking there.  Racer

See above. I've checked all of my pumps (I now own 4!) and their shafts all have about 0.010" of runout.  There's another water-pump thread here that I've posted videos in.

5
Maintenance and Servicing / To anyone with water pump problems
« on: February 17, 2020, 04:43:30 AM »
If, like me, youíve had multiple problems with leaky water pumps, I have a question: do you have engine bars/ crash bars mounted on your bike?  Wondering if the added vibration is whatís killing the pump seal. Thanks!

6
Maintenance and Servicing / Re: More water pump blues
« on: February 16, 2020, 05:16:50 PM »
Barely 1000 miles on my 4th pump. And itís started weeping again.  WHAT THE HELL?!?

7
Maintenance and Servicing / Re: Water pumps
« on: January 15, 2020, 01:28:47 AM »
Mines a 2015 with 30k miles. But like I said, Iíve put 3 new pumps on the bike in that time.

8
Parts, Accessories & Clothing For Sale / Re: 2017 CB500x A OEM Parts
« on: December 17, 2019, 08:22:51 PM »
*Originally Posted by MotoMondo253 [+]
Hey All -

I've completed the upfitting of my 2017 CB500x A with a RR3 kit and I'm looking to offload the factory parts.
I've made some additional upgrades and have these factory parts listed too. 

I'll get some pic loaded up soon, but here is what I have.

Rear shock
Front fork internals
Handle bars
Windscreen
Factory muffler
Center stand
Trex crash bar https://www.t-rex-racing.com/2013-2018-Honda-CB500X-CB500F-Engine-Guards-p/n47-13eg.htm
Rear tail light housing assembly including blinkers and plate light
Light bar w/Hella lights
Soundbomb with bracket - has crack that has been fixed with epoxy still works as it should.

Make me an offer and if it's fair I'll entertain it. I would be shipping from the US, specifically Western Washington

Thanks
MotoMondo253

Interested in the Soundbomb -- is it the Compact or the Mini?
Thanks!
-Jim G

9
Maintenance and Servicing / Re: More water pump blues
« on: December 12, 2019, 06:49:19 PM »
*Originally Posted by timur [+]
I think there would be another reason for such systematic failures - misalignment between oil pump and water pump shafts. Water pump is driven by oil pump so their axis noncoincidence will produce vibrations and bending loads on both shafts.

This would explain why on some bikes water pumps leaks every 10000 miles and on another they last forever. In this case I suppose there must be signs of wear inside the groove on end of water pump shaft :084: Yojimg - has your pump shafts some visible wear there?

I've started wondering the same thing -- like maybe the culprit is actually the oil pump, which drives the water pump?  That said, I haven't noticed any visible wear in the drive slot of any of my water pumps, nor on the drive tab on the oil pump itself.  I'd like to examine the oil pump's drive tab spinning, but that would require turning over the engine with the water pump removed....


10
Maintenance and Servicing / Re: More water pump blues
« on: December 11, 2019, 11:10:09 PM »
*Originally Posted by Gills [+]
See bigbobby's reply #11 here: https://www.cb500x.com/index.php?topic=5285.11 A number of the pumps in stock at his dealer had bent shafts. It may be that there are bad batches around. :003:

Yep.  I've checked all of my pumps (I now own 4!) and their shafts all have about 0.010" of runout.  There's another water-pump thread here that I've posted videos in.

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