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how easily does your cb500 do 100mph?

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trevor machine
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how easily does your cb500 do 100mph?

Post by trevor machine on Thu 06 Jul 2017, 8:33 am

Both my bikes will get to 90mph with relative ease - anything beyond is a struggle, even lending a hand by chinning the tank and tucking in generally.

The reason I mention this is because of a recent post I read on BCF, which said "I had an XBR in 1988. It was a fantastic bike in all but one way. My preferred style of bike is one a bit 'laid back', much like the old Triumphs I used to own, and, after the XBR, the Reveres. I loved the single cylinder sound, reminded me a bit of a mate's Goldie from years ago. It was quite a good puller too, and would cruise easily at an indicated 100 mph."

Now, even making allowances for over-reading speedometers, I'm having a bit of difficulty believing this. Although the XBR500 is between 10 and 20kg lighter than the CB500, it's also a thumper, making around 45bhp.

Does anyone else have any thoughts on the above claim, and the comparative specs of the two bikes? Has anyone here owned both?


Last edited by trevor machine on Thu 06 Jul 2017, 1:25 pm; edited 1 time in total
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steady Eddy
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Re: how easily does your cb500 do 100mph?

Post by steady Eddy on Thu 06 Jul 2017, 10:09 am

Cruising is to do with fuel economy not what you can maintain me thinks.

Cruising speed of a cb5 that should do over 110mph....60-70mph?

So yeah he is talking crap.
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ZekeVal
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Re: how easily does your cb500 do 100mph?

Post by ZekeVal on Thu 06 Jul 2017, 10:29 am

I didn't know about the XBR, interesting bike!

According to http://www.motorcyclespecs.co.za/model/Honda/honda_xbr500%2086.htm
it was good for an indicated 108mph, so cruising at 100mph seems a bit of a stretch.

Just hop on one and try I guess  geek
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trevor machine
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Re: how easily does your cb500 do 100mph?

Post by trevor machine on Thu 06 Jul 2017, 1:27 pm

Edit - I said 100mph in that first sentence of the OP and I bloody well meant 90!!! Actually getting beyond that to 100 is another matter entirely and will probably involve going down hill and/or a decent following wind.

Soz for any confusion. It was relatively early this morning when I started this thread.
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ceejay
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Re: how easily does your cb500 do 100mph?

Post by ceejay on Thu 06 Jul 2017, 4:28 pm

I have a hard time believing mine would do 120 but I know it does 110 and may have had a tad more with chin on the tank! It will sit at 90 though and touch 100 with relative ease. All on private roads of course and all just what my speedo is telling me which I suspect shows a couple mph faster than reality.
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arrison
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Re: how easily does your cb500 do 100mph?

Post by arrison on Thu 06 Jul 2017, 5:03 pm

I rode mine from Sheffield to Barton On Humber a couple of years back, in convoy with 2 R1s, a blade, an RSV1000 mille-r and a VFR. From hitting the M18 to leaving the M180, I didnt see less than a ton, and it never felt like it was struggling. Whether the fairing helped (s model) I dont know. Or it could just be that the yellow ones are faster
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ANDYC
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Re: how easily does your cb500 do 100mph?

Post by ANDYC on Thu 06 Jul 2017, 6:05 pm

Blue ones are just as quick Laughing 
Mine never had a problem getting into three figure speeds, again that could be down to the fairing too.
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Crash- Elmit
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Re: how easily does your cb500 do 100mph?

Post by Crash- Elmit on Thu 06 Jul 2017, 6:39 pm

Mines a naked and will hit a ton at about 3/4 throttle, even though I've never touched the engine to do valve clearances or a compression test, have no idea what the bore is like but it does not burn oil
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trevor machine
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Re: how easily does your cb500 do 100mph?

Post by trevor machine on Thu 06 Jul 2017, 7:29 pm

Go on a diet it is then. : - /
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ANDYC
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Re: how easily does your cb500 do 100mph?

Post by ANDYC on Thu 06 Jul 2017, 7:45 pm

As a thought, what revs do you change up at?
If you are just trying to use the power/ torque in top gear to rev through the range it will never get there.
Changing up at about 9k does it.
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trevor machine
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Re: how easily does your cb500 do 100mph?

Post by trevor machine on Thu 06 Jul 2017, 8:41 pm

It's probably true I'm prone to fairly short shifting at about 4-5k.
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jchesshyre
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Re: how easily does your cb500 do 100mph?

Post by jchesshyre on Thu 06 Jul 2017, 9:09 pm

Mine never used to be able to get past about 114 indicated on a flat road, but today, coincidentally, I was messing around with an Audi R8 with loud exhausts and I noticed (for the first time since doing the mild tune I did a while ago - one size larger main jets, extra shim under each jet needle, plus K&N and a Fuel silencer) that I was reaching 120 indicated. Not too bad!
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Crash- Elmit
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Re: how easily does your cb500 do 100mph?

Post by Crash- Elmit on Fri 07 Jul 2017, 12:58 am

ANDYC wrote:As a thought, what revs do you change up at?
If you are just trying to use the power/ torque in top gear to rev through the range it will never get there.
Changing up at about 9k does it.

To be honest I have no idea. the rev counter isn't functioning so I just change up when it sounds right, though I must admit I have hit the rev limiter in top gear on the dual carriageway through Peterborough.
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Jameshambleton
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Re: how easily does your cb500 do 100mph?

Post by Jameshambleton on Fri 07 Jul 2017, 6:39 am

120 mph on the autobarn but I'm running s lower profile tyre so my speedo over reads
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trevor machine
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Re: how easily does your cb500 do 100mph?

Post by trevor machine on Fri 07 Jul 2017, 8:22 am

I think I've developed too much of a taste for those little thrusts of torque that the engine seems to serve up, which on my bikes are around 4-5k, maybe even a little under that tbh. With an 'unbaffled' end-can, the noise too is quite addictive - it's more of a deep, comparatively tuneful trumpeting sound. The noise when ridden in revs much above the 5k range still always makes me smile, but it's obviously a lot more raucous and the aha ahem more socially responsible person repressed deep within me often avoids such howling fanfares. In other words, if I'd kept the original exhausts on the bikes, I might be more rev happy. *shrug*

Anyway, interesting replies. Cheers everyone.
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liverpool_f_
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Re: how easily does your cb500 do 100mph?

Post by liverpool_f_ on Fri 07 Jul 2017, 8:39 am

mine will do 100 mph no problem. I have had it at an indicated 115 mph. The top box really kills the performance though. It's noticeable all the way through the gears but top end is not affected, even when its empty
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Jameshambleton
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Re: how easily does your cb500 do 100mph?

Post by Jameshambleton on Fri 07 Jul 2017, 9:41 am

Forgot to add that I had my topbox fitted and it was full. I also had a hold-all/rollbag, and a tent fitted and that speed was achieved with the baffle in.


Last edited by Jameshambleton on Sat 08 Jul 2017, 3:15 pm; edited 1 time in total
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trevor machine
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Re: how easily does your cb500 do 100mph?

Post by trevor machine on Fri 07 Jul 2017, 2:14 pm

Jameshambleton wrote:abd a tebt firrrred abd



drunken

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Jameshambleton
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Re: how easily does your cb500 do 100mph?

Post by Jameshambleton on Sat 08 Jul 2017, 3:15 pm

trevor machine wrote:

Jameshambleton wrote:abd a tebt firrrred abd





drunken


Now fixed....
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Basil Moss
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Re: how easily does your cb500 do 100mph?

Post by Basil Moss on Mon 10 Jul 2017, 10:49 am

Since I took the baffles out, it seems to get 120 and a smidgen over, hunched over the tank bag gripping on with my knees like grim death...
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teamster1975
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Re: how easily does your cb500 do 100mph?

Post by teamster1975 on Mon 10 Jul 2017, 11:57 am

I would say "eventually" for me. On a suitable road where such things are legal I can get to 90 very easily but it's then a plod up to 100mph, I don't think my neck would take much more than that without a fairing though, it's not enjoyable.
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Vulcan88
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Re: how easily does your cb500 do 100mph?

Post by Vulcan88 on Tue 11 Jul 2017, 12:12 am

I was struggling to get over 105 for a while and realised that my cornering was awful...turns out my tyres needed reinflated, the rear BT45 was reading 18psi !! it's only been a few weeks sinces inflating them fully but been on the bike everyday I suppose.

 pumped it up to the recommended amount from the forums and hit 100 in no time, last time I checked the speedo I hit 115 but i didn't have enough road to keep it up Sad

don't get me wrong this was chin on the tank and tuck! xD
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eternally_troubled
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Re: how easily does your cb500 do 100mph?

Post by eternally_troubled on Wed 12 Jul 2017, 7:57 pm

90 on the motorway - no problems. 100 is pushing it but possible. Any more than that I have to lie on the tank and it all starts to get a bit scary/wobbly so I normally give up at that point - though it may be better now I have new shocks.
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stormbringer
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Re: how easily does your cb500 do 100mph?

Post by stormbringer on Thu 20 Jul 2017, 1:21 pm

I've done the stretch Hannover, Germany to Aarhus, Denmark (a good 500 kilometers) doing 100+ mph with soft panniers - in one go. Going home, I got impatient, and with that there was nothing to do but hunker down behind the tank bag and let it rev. Cruise @ ~8000 rpm... I spent a ton of petrol - had to stop three times.

This is also where I learnt that Autobahn in the dead of the night is the reign of Mercedes, Audi and Porsche. Hanging on for grim death, I got swoooshed so many times by four-wheeled missiles I simply lost count. Ask me if I felt small and slow.

The next day I checked my chain. Cleanest chain I ever saw:
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ZekeVal
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Re: how easily does your cb500 do 100mph?

Post by ZekeVal on Thu 20 Jul 2017, 6:52 pm

Centrifugal force is wonderful!
And finally a legit reason for speeding...

"But, Officer, I was merely cleaning my chain you see!"

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