Honda-SOHC
SOHC.co.uk Forums => CB500/550 => Topic started by: kmn on February 12, 2014, 08:30:10 AM
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Hello - newby here... I've had a search through previous posts and couldn't find any previous enquiries about this: My rear wheel is in dire need of being replaced by one with some chrome on it. The whole bike is being rebuilt at the mo and I want her back on the road for TT time here in the IOM.
Struggling to find via ebay / google a wheel so far, is there a wheel from another model (inc hub/drum/etc) that will fit, I have no idea what bits are interchangeable at this moment!
Many thanks in anticipation of any help!
Kev
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http://www.ebay.co.uk/itm/Honda-CB-500-Four-CB-550-Four-Hinterrad-wheel-/301093448737?pt=DE_Motorradteile&hash=item461a916c21
One wheel in good condition. Also PM Oddjob he is having a early spring sale and may have a rear wheel in better condition.
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If the drum lining is in good order why not lace a new rim on with new spokes from Dave Silver?
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A few things, 1st, your best option is probably rebuild what you have. even a cracked drum lining is fixable, if it just needs a new set of spokes and rim better still. If replacing Cb500 and 550 wheels are broadly the same, in terms of spacers and spindle bolts will interchange, but the brake back plates come in a few varieties and not all will interchane from wheel to wheel so best treated as a set - buy the back plate and wheel off the same bike as a match is only established by bolting the complete assembly into the swing arm, nice and tight and seeing if the whole lot will turn or if the drum backplate is now toutching the hub.As I recall it looks ok, but wont turn as you cannot see thecontact area. cb650 comstars will slot streight in at the rear, the front comstar off a cb650 will fit but might need new spacers - before I had a lathe I used a selection of washers.
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Thanks for all your help. The hub & drum are in fine order, ideally, I would go for a Silvers' new rim & spokes but the £200 rebuild cost is out of my league right now. I'll pm yer man and keep tabs on the ebay link..
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Ooof, bet that hurt..
Should you happen across a std wheel sir please... please let me know!
There'll be a question about forks coming soon...
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cb650 comstars were cheap(relatively) when I last looked - probably why I have 2 sets stockpiled in the shed, Wish I'd seen some at £5 though. Yamaha xs250 and 400 rear wheel can also apparently be fitted, sadly I think I stuck the one I had on ebay @99p and it went for that poxy sum. I rarely see cb500 spoked wheels go for an affordable price, unless ripe- last one I picked up for £40 had painted spokes and they snapped in service as the paint was masking some really bad pitting, so check for that, wasn't very bad on my bike,it's a sidecar outfit, so I just swapped for a sprare from the shed and carried on - lost me an hour waiting for other half to bring the spare, no so easy on a solo. I'm considering selling a few spares - either a set of Melbur alloys or perhaps the cb650, though I've not decided what I'd sell or keep yet - need to sort the relevant shed and see how many of each type I have. Don't be put off doing a re spoke job yourself - it's doable on a diy basis - I've done a couple as I had some cracked drums to re line and didn't then have a lathe big enough to take a complete wheel so I had to un lace the spokes and then re lace afterwards (being a tightwad I re used the best spokes and rim from 2 or 3 wheels to do a good one) One Wheel I probably will get rid of is a 500 rear which has been re laced with a 15 inch rim and tyre - the tyre rubs the stock brake torque arm, the wheel is not pretty.
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Thanks for all your help. The hub & drum are in fine order, ideally, I would go for a Silvers' new rim & spokes but the £200 rebuild cost is out of my league right now. I'll pm yer man and keep tabs on the ebay link..
about £60 for budget DSS rim + spokes and build it yersel. Its not that hard really
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I built my own wheel with new rim and spokes but couldn't be arsed trying to balance it, maybe next time.
I paid a professional £25 to true it up.
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My capacity for making a balls of something holds no bounds. But I can't resist a challenge so I might have to give building a wheel a, er, bash.
I'll keep an eye out for a decent prefab rear wheel though, it's always good to have a spare anyway - what with them being rare and all that. And not because any wheel built by me will only be fit to go on a clown's bike.
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When you are ready to do the job shoot me a PM and I will tell you an easier way of doing it mate, but to start with take lots of pictures and look carefully at the hub end of the spokes so you can identify the two sorts
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When you are ready to do the job shoot me a PM and I will tell you an easier way of doing it mate, but to start with take lots of pictures and look carefully at the hub end of the spokes so you can identify the two sorts
Can I shoot you the email too Bryan when I am ready to have a go at wheelbuilding (I have a pair of wheels for my 750K0 and another pair for my 250K0 to lace up).
It was interesting what David Silver said about the rims they sell (he contacted me via Facebook), basically he was recommending DID rims if you are doing it yourself and inexperienced and that his economy ones were best suites to the 'pros. My 750 ones are DID and I have not bought the CB250K0 ones yet.
Cheers....... AshD
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Why do people have trouble with lacing. The rear is so easy, use the swinging arm as a stand. That is where the wheel will be going in the end.
I have just looked through You Tube, Vids and Oakys Garage M/C lacing is about the best. Why do Americans have to blab on?
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Testing picture uploads
Looks like the server is out of disc space...
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Yep.
2.5Gb of error logs... Doh... :-[
Fixed now.
Steve
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Why do people have trouble with lacing. The rear is so easy, use the swinging arm as a stand. That is where the wheel will be going in the end.
I have just looked through You Tube, Vids and Oakys Garage M/C lacing is about the best. Why do Americans have to blab on?
Yes looking on YouTube I found Oakys Garage M/C lacing is about the best video I could find (not that I have done any lacing yet).
Cheers... AshD
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copying an exsisting wheel is best, lots of photos is probably fine, it is not that hard, so long as you take your time, even I can do it - tested my results by using the wheel on a sidecar for 50k miles.
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I found it very easy as the hub had marks from the previous spokes.
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To those interested i will explain now but anybody is welcome to email me, just don't expect a quick answer due to working hours.
There are two types of spokes 20 of each and the length from bend to head is different
(1) you can see the head from the out side so it goes out to in
(2) the head is on the inside so it goes in to out
Take the 20 of type (1) and using your picture lace up the wheel with just those and get all evenly tight and true the wheel
I put the wheel spindle in a big vice and spin the wheel using a large screwdriver to judge up and down and lateral error
When doing this note that anything less than 1/8 inch is good and look at the rim to see where it has been welded together as this frequently causes a "kick" that can never be trued out but you will go mad trying.
with the wheel trued this way---a lot easier as you are only playing with 20 spokes you can now fit the other 20 one at a time as they will happily fit from inside to outside without fouling anything.
Tighten evenly and check for runout.
The first time you do this expect to spend 2-3 hours on the job but after a few you can get it down to 1/2 hour
I have found with genuine or DSS kits that it is easy to get the rim fairly true by just winding the nipple on the same amount as they are very uniformly made
Hope that helps and have a fun, frustrating time
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Many thanks - I'll get the rim & spokes ordered this week and let you know. What is life without a challenge, or 40 of them...
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couple of docs and things I refferreed to:
I used following guides for the wheel building;
http://www.webbikeworld.com/motorcycle-wheels/spoke-wheels/
http://www.classicbikes.org.uk/ ..... wheel building page
1. Got loads of help from this forum and the US one
2. Cut the old spokes and rim off the hub
[attach=5]
3. Polished outsides of hub and painted centres with etch primer and black epoxy paint
[attach=3]
4. Worked out the difference between the two spoke types
[attach=4]
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5. Put the "B" spokes on the outside of the hub, ie poked them through the holes from the inside of the hub to the outside. Note that the pic is to only show arrangement of the "B" spokes only, I put all spokes on the hub before lacing any of them
[attach=1]
6. Put the "A" spokes on the inside of the hub, ie poked them through the holes from the outside of the hub to the inside. below Note that the pic is to show arrangement of the "A" & "B" spokes only, I put all spokes on the hub before lacing any of them)
[attach=2]
7. When all the spokes were on the hub, I sat the hub on a table and sat the rim over it and loosely arranged the spokes. Then, laced the A spokes on the speedo side hub to the rim and put the spoke nipples on a couple of turns. Then did the B spokes for the speedo side of the hub, Turn the wheel over, do the "A" spokes for the brake disc side, then the "B" spokes for the brake disc side , again putting the nipples on a couple of turns.. So, all spokes now roughly laced up
[attach=3]
[attach=4]
8. Made a truing jig out of an old pair of forks bolted to a work bench. Put the wheel the on the jig
[attach=5]
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9. Went round all nipples taking one off at a time, put a bit of oil on the female nipple thread and a bit of copper grease on the rim nipple seat. Then put the nipple back on and tightened it 10 turns with a cross head screwdriver. Worked round the wheel until all spokes / nipples oiled, greased and tightened 10 turns.
10. Used a dial gauge and spoke wrench to get the wheel true to 0.2mm vertical, then 0.2mm horizontal, then checked vertical again. .....Always starting at biggest high and low points and tightening spokes a turn or so at these points and tightening adjacent spokes half a turn. This was fairly easy, taking about an hour or so to get trued up. (note that its impossible to get the rim true to this degree at the point where the rim weld is)
[attach=1]
[attach=2]
11. Job Done
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Good write up and pictures Ewan, that makes a good reference for us on here.
I've always avoided doing these in the past but nice to see it layed out so clearly.
Thanks for your time and effort to show us.
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Indeed a thousand thanks Ewan, that can only be a massive help.
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Rim and spoke kit ordered from DS:
Now then.... it now appears - after taking it to bits - that I have been riding around on a CB450 hub for the last 20 years... Anyone got a 500 hub for sale?
Cheers!
Kev