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Messages - robvangulik

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Photo of (you (and) or) your bike :) / Re: 1987 CBR refresh
« on: July 04, 2020, 19:38:53 PM »
Well done, that bike looks already fabulous, you'll have problems getting it back from your mate!

All Technical Issues / Re: Wheel bearings
« on: July 01, 2020, 16:34:27 PM »
Bearings are cheap here too, and greasing has no use as the grease is enclosed in the bearing, you can see the ring that should be on it next to the old one. These are SC24 discs, much better than the SC21 discs, a bit heavier though.
And no, Like I wrote, I had to replace all wheelbearings at least once over the years.
I don't mind, with taking the wheel out it is less than half an hours work and if it needs to be done it needs to be done, like tyres and brake pads etc. without them a bike doesn't run!

All Technical Issues / Re: Wheel bearings
« on: June 30, 2020, 21:55:19 PM »
On my white bike I replaced the front bearings once, the rear wheel bearings once and the sprocket carrier bearing twice since 1994, when I bought the bike with some 25.000km on the clock.
On my black bike I had to do that more often, I think because for the last 25 years that has been ridden mostly in winter (and a lot of salt on the road) and overall bad weather. I didn't always make notes of changing wheelbearings on that bike, but it must have been at least 3 sets  of bearings on the rear, and maybe 2 in front. And that is since 1989, bought with 32k km. And I do not count the new ones I put in when changing to the wider SC24 wheels.
Both those bikes are now well past 300k km, black ± 14k and white ± 35k.
On my bikes I don't feel much difference in coasting, not even between the 400 and the 1000's, most important I think is that the brakes run free...

All Technical Issues / Re: Compatible driven sprocket
« on: June 24, 2020, 11:19:15 AM »
When I started using the sc24 wheels, mainly to have a better choice in modern tyres, I have tested many different sprocketsizes, and ended up at 43/18, slightly longer than standard.
Front sprockets for the RC27 are the same as the sc21/24, and I saw on their website JT have a broad spectrum of rear sprockets available for RC27 from 37 to 48 teeth.
The Gearingcommander site will be a great help deciding what to use, also concerning chainwear with the chosen gearings.
I have always wondered that Honda chose the 45/15 for the 750, I alway thought that a rear sprocket that was devisible by the front with whole numbers would be bad for chainwear as the same tooth came more often over the same chainlink.

All Technical Issues / Re: Compatible driven sprocket
« on: June 24, 2020, 01:07:20 AM »
Its a shame we live so far apart, I have 2 sets of original SC21 wheels, the ones I replaced with SC24 wheels, you could have a wheel for free, only the postage would be horribly expensive.

All Technical Issues / Re: Compatible driven sprocket
« on: June 23, 2020, 18:16:46 PM »
I think I see the most important dissimilarity, the inside is also divided in 4 respectively 5 parts.
I also looked at the usual donor, the VFR750 '87, but that has the same problem...maybe that complete wheel could be made to fit?
VFR750f '87

All Technical Issues / Re: Compatible driven sprocket
« on: June 23, 2020, 17:26:55 PM »
Those parts I have here, both my SC21 have SC24 wheels, and all though the sprocket carriers have different part numbers they fit both wheels.
But the 750 has a 18 inch wheel while the SC21 and SC24 are 17 inch, only different width, the 21 has a 3,5 inch and the SC24 a 5,5 inch wide rim.
I don't know what part#3 you mean, apart from the number of studs the shape of the carrier is roughly the same.
I don't have a 750 carrier to measure/compare with the one I DO have...#10 in the description.

All Technical Issues / Re: Compatible driven sprocket
« on: June 23, 2020, 13:35:25 PM »
Wouldn't it be possible that the rear sprocket carrier from another model, like a 1000, fit in the 750 wheel?
The 750 carrier has number 42610 mm4 000
The SC21 1000 has number 42610 mm5 000
The SC24 1000 has number 42610 MS2 000, which is a number not specific for a CBR1000F, which can mean that the part is used in more models, and the last 2 have 5 studs, IF the other measurements are the same it MIGHT fit the 750.
 Those from all 1000's have a diameter of 186 millimeter (18,6 cm), and as I know Honda, they use as many parts as possible in as many different bikes as possible! gasdrop

All Technical Issues / Re: has CBR750 data
« on: June 22, 2020, 13:13:26 PM »
 :zaehne009: At last. Nice to know.
I'll keep it to myself.

All Technical Issues / Re: has CBR750 data
« on: June 22, 2020, 11:45:03 AM »
Did you give him the information? I supplied him several years ago with the right numbers for the SC21 and SC24 CBr1000f models :zaehne029:

New Members please introduce yourselves :) / Re: newbie
« on: June 05, 2020, 22:36:39 PM »
Welcome, help will be difficult half a world away, advice is always free and possible winky5a

New Members please introduce yourselves :) / Re: Australia....
« on: June 05, 2020, 22:35:08 PM »
Hi Syd CBR, welcome, you could try sending him a personal message, he hasn't been here since januari, if he has his mail notification on he might read it.

Photo of (you (and) or) your bike :) / Re: 1987 CBR refresh
« on: May 25, 2020, 21:51:07 PM »
I have succesfully used MEK (methylethylketon) for repairing fairings and other ABS parts.

Buying and Selling / Re: for sale 1987 Honda cbr 750 hurricane
« on: May 09, 2020, 22:44:28 PM »
Oké, I hope you're doing allright!

Photo of (you (and) or) your bike :) / Re: Google street view
« on: April 25, 2020, 00:50:38 AM »
Nice pic :thumbs:

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