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CB500/550 / Re: CB650 / 550 part swap.
« on: May 04, 2014, 08:13:46 PM »
Thanks for the comments guys.
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CB500/550 / Re: CB650 / 550 part swap.« on: May 04, 2014, 08:13:46 PM »
Thanks for the comments guys.
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CB500/550 / CB650 / 550 part swap.« on: May 02, 2014, 06:59:06 PM »
Sorry if this has been asked before, I've tried 'Search' but i've so far only drawn blanks. Two queries.
Is the oil-pump from a CB650, fitable to a CB550F2 ? And the same goes for the sump. I have seen this somewhere that this is possible, the proviso being it has to be a particular model CB650, and obviously the pick-up has to be modded to cater for the 650's deeper sump. 3
New Member Introductions / Re: Hello from Sunny Tewkesbury« on: May 02, 2014, 05:33:54 PM »
Thaks for the warm welcome guys, just starting out on the long road to restoration. So I will be in touch.
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CB500/550 / Re: CB550F Double Disc's« on: April 20, 2014, 09:46:23 PM »
The theory about the fluid displacement being greater with a larger piston is valid. However, there are much more important things to consider. Like keeping the calipers' correctly adjusted, using pads with a higher coefficient of friction, using braided hoses, not leaving braking until it's more than too late, etc. etc.
And despite what logic might dictate, a narrow bore master cylinder (MC) piston (bike's stock part) will give a smoother and more subtle action when a second front disc is fitted. Sure, the fluid transfer will be less with an 11mm bore compared to one of 16mm, by a little less than a factor of 2.16. but you'll have twice the breaking surface available. You'll max-out the pressure in the breaking system (and hence breaking force on discs) before you bottom-out the break lever. Track-day racers often use a "smaller than stock" master cylinder setup on their clutch for similar reasons, but in the opposite sense, i.e. they're feeding-in energy - not dissipating it. So by fitting a second disc set-up using stock MC, you'll get a smoother braking system - not a stronger one. If you want a sharper braking system, just fit the MC with a larger diameter (say 16mm) and forget about the second disc/caliper/pipes, save weight at the same time. Does the single disc set-up look as cool as the twin disc? Hell no! 5
New Member Introductions / Hello from Sunny Tewkesbury« on: April 20, 2014, 08:34:09 PM »
Hello.
And greetings from Tewkesbury ! Why its taken so long to get here - I just don't know. From the age of 17 I've owned a black CB500/4 (1973 vintage). I'm restoring it slowly - probably just in time for it's 50th birthday. It was my 1st m/cycle, and at £350, cost me most of my first term's tech college's grant. I also have a heavily modded (and very lightweight) 1999 Ducati 900ssie, and also a stock 1999 Suzuki Bandit (1200). All very differant motorcycles, but all have a place/roll to play in life. I'm married to Louise, and between us we have 3 children - David (31), Mark (30) and the youngest is Claire. We're also keen cyclists (the type you have to pedal), and probably pedal more miles than drive. I will have a go at uploading some pics of m/bikes sometime, I'm sure to ask plenty of dumbo questions - I look forward to plenty of banter, receiving advice and if possible sharing tips I've learned over the past 39 years of owning m/bikes. Cheers all.
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