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drum brakes - CB500 vs. ER5 and GPZ500

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trevor machine
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drum brakes - CB500 vs. ER5 and GPZ500

Post by trevor machine on Sun 29 Jan 2017, 6:23 pm

Not sure how many others have come across this before but there's apparently a fairly well-known weakness on the Kawasaki equivalents of the CB500 - i.e. the ER5 and GPZ500.

This relates to the bikes' drum brakes which caused the drum to go out of round, for whatever reason.

I've not heard of a similar problem occurring with the CB500's drum brake and wondered what caused the Kwakker's to develop problems. Not sure if anyone knows enough about how these kinds of brakes work etc.

sullivj
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Re: drum brakes - CB500 vs. ER5 and GPZ500

Post by sullivj on Sun 29 Jan 2017, 7:00 pm

My neighbour has a 2001 GPZ500. He's owned it from new, and now commuted 55,000 on it. 

He's never had a rear brake issue, but has commented that it's not as good as the disc brake on my CB5.
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trevor machine
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Re: drum brakes - CB500 vs. ER5 and GPZ500

Post by trevor machine on Sun 29 Jan 2017, 7:15 pm

Wow that bike's done pretty well, then. I read that in some ways they were better than the CB500 - maybe it was a power/weight thing or perhaps the faring made it faster.
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Beresford
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Re: drum brakes - CB500 vs. ER5 and GPZ500

Post by Beresford on Sun 29 Jan 2017, 8:42 pm

Some GPZ 500s had twin front discs, which I've always envied. Perhaps they aren't quite as fast, but brake much better ? Some sources (MCN) state 47bhp, and others quote 60bhp. MCN states that they are faster than the CB500 though.
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trevor machine
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Re: drum brakes - CB500 vs. ER5 and GPZ500

Post by trevor machine on Sun 29 Jan 2017, 8:54 pm

Yes - those are the kinds of figures I've come across too. I was almost certainly reading the same sources. ; - )

sullivj
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Re: drum brakes - CB500 vs. ER5 and GPZ500

Post by sullivj on Sun 29 Jan 2017, 9:00 pm

trevor machine wrote:Wow that bike's done pretty well, then. I read that in some ways they were better than the CB500 - maybe it was a power/weight thing or perhaps the faring made it faster.

They were considerably cheaper when new, which is why he got the GPZ and not the CB.
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Jameshambleton
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Re: drum brakes - CB500 vs. ER5 and GPZ500

Post by Jameshambleton on Sun 29 Jan 2017, 9:05 pm

sullivj wrote:

trevor machine wrote:Wow that bike's done pretty well, then. I read that in some ways they were better than the CB500 - maybe it was a power/weight thing or perhaps the faring made it faster.



They were considerably cheaper when new, which is why he got the GPZ and not the CB.

Know which one I'd want though 

sullivj
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Re: drum brakes - CB500 vs. ER5 and GPZ500

Post by sullivj on Sun 29 Jan 2017, 9:19 pm

I
Jameshambleton wrote:

sullivj wrote:



trevor machine wrote:Wow that bike's done pretty well, then. I read that in some ways they were better than the CB500 - maybe it was a power/weight thing or perhaps the faring made it faster.





They were considerably cheaper when new, which is why he got the GPZ and not the CB.



Know which one I'd want though 

For what he needed it for, which was a  cheap, reliable 15 year commuter with a small fairing, I reckon he made the right choice for him.

There's not that much that differentiates them really.
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trevor machine
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Re: drum brakes - CB500 vs. ER5 and GPZ500

Post by trevor machine on Sun 29 Jan 2017, 10:39 pm

Fwiw I agree with those points. But then again it does make me wonder what the price difference was between the two bikes - I'm guessing in the region of £500. And I have to say, having owned two Kawasakis, they do seem pretty well built. I mean, you certainly don't look at them and think hmmm yeah Honda definitely wouldn't do it like that, and the finish on this part would be thicker and more lustrous etc.

That being said, I do prefer the CB over either the GPZ or the ER - although being honest I haven't ridden either of them.
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Jameshambleton
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Re: drum brakes - CB500 vs. ER5 and GPZ500

Post by Jameshambleton on Mon 30 Jan 2017, 12:30 am

trevor machine wrote:Fwiw I agree with those points. But then again it does make me wonder what the price difference was between the two bikes - I'm guessing in the region of £500. And I have to say, having owned two Kawasakis, they do seem pretty well built. I mean, you certainly don't look at them and think hmmm yeah Honda definitely wouldn't do it like that, and the finish on this part would be thicker and more lustrous etc.

That being said, I do prefer the CB over either the GPZ or the ER - although being honest I haven't ridden either of them.

I did 7 hours on a er5 over 2 weeks, vibrated like I don't know what, made my hands go numb overall poor build quality too at least aesthetically.

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