Author Topic: What rear wheel is this?  (Read 1609 times)

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Offline jensk

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What rear wheel is this?
« on: January 13, 2007, 10:08:31 AM »
I have This '77 CB550K3 that i am trying to restore.

I have come to mending the brakes. Having dismantled the rear wheel i can se that the wheel doesn't look like the ones shown in the CB500-550 shop manual. The original wear indicator and the plate on the outside of the sprocket is missing. Can anybody tell me from which bike this wheel is from. The mounted tire is a 4.10H18. The rear swingarm is also not the original but I have bought a new used swingarm and would replace the present with this original swingarm. My problem is figuring out if I will get geometry or mounting problems with this wheel in the original rear swingarm.




/jens
'77 CB550K Technical rebuild done and riding. Cosmetics must wait till winter
'78 CB550K3 beautifull but engine needs rebuild.

Offline cafe75-550

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Re: What rear wheel is this?
« Reply #1 on: January 13, 2007, 10:45:05 AM »
It appears to be the same hub/brakes as on the '77 550F sitting in my garage. The pictures in the CB500-550 shop manual are of the earlier hub style ('75 and '76 for sure). I'm not sure if that means its original equipment for the the 550K3, but I would suspect that its probably original. That doesn't mean you may not have spacing problems if you had a different swingarm, as you may have non-original spacers from that set up and might have to find a set of original spacers. Got any pictures of the swingarm?
New bike!
'07 Triumph Speed Triple 1050
Never enough projects!
'75 CB550 "Cafe", '76 CB550 parts bike
'64 Norton Atlas featherbed/'71 Triumph 750 Triple (Triton project)
'68 BSA Thunderbolt (frame and cases, project in the wings)
'57 Triumph Thunderbird (frame and mostly complete engine)

Offline jensk

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Re: What rear wheel is this?
« Reply #2 on: January 13, 2007, 10:52:20 AM »
The spacing was ok - must have been when PO's PO installed the swingarm and rearaxel with new spacers. I thought that there was supposed to be a rear brake lining wear indicator but it's not there.
If I wan't to return to the original swingarm i guess I will have to get new spacers or ??
What have become of the "lid" on the outside of the sprocket and does it serve any purpose.
Posted of presently mounted swingarm and unoriginal chainguard.


/Jens
'77 CB550K Technical rebuild done and riding. Cosmetics must wait till winter
'78 CB550K3 beautifull but engine needs rebuild.

Offline cafe75-550

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Re: What rear wheel is this?
« Reply #3 on: January 13, 2007, 11:23:15 AM »
Well, you might need new spacers, all depends on if the swingarms are the same width. The "lid" on the outside of the sprocket was a chain deflector, saw it on here somewhere that it was supposed to keep the chain out of the rear axle in case of a thrown chain, though I've heard they weren't the greatest at actually doing that. Not sure about the wear indicator.

Hey, I would be interested in that rear swingarm if you don't have a use for it (would work well on my cafe I think)  ;D
New bike!
'07 Triumph Speed Triple 1050
Never enough projects!
'75 CB550 "Cafe", '76 CB550 parts bike
'64 Norton Atlas featherbed/'71 Triumph 750 Triple (Triton project)
'68 BSA Thunderbolt (frame and cases, project in the wings)
'57 Triumph Thunderbird (frame and mostly complete engine)

Offline cafe75-550

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Re: What rear wheel is this?
« Reply #4 on: January 13, 2007, 11:36:52 AM »
Just a heads up, that might be a Dresda swingarm you have there. If it is, they're pretty rare. Of course it also may just be a custom fabbed swigarm based off of a Dresda. Either way, I'm interested in it if you won't be using it...

You can see what I mean if you do a search on dresda on the forums or look at the dresda bike in the gallery.
New bike!
'07 Triumph Speed Triple 1050
Never enough projects!
'75 CB550 "Cafe", '76 CB550 parts bike
'64 Norton Atlas featherbed/'71 Triumph 750 Triple (Triton project)
'68 BSA Thunderbolt (frame and cases, project in the wings)
'57 Triumph Thunderbird (frame and mostly complete engine)

Offline jensk

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Re: What rear wheel is this?
« Reply #5 on: January 13, 2007, 02:49:53 PM »
How would I identify it as a Dresda. Would there be a stamp or some other special way to identify it. I must admid i would be a bit surprised if it were a special expensive component as a Dresda since almost al the rest of the bike to looks like some thing that a the PO's Po have slapped together from components at hand.
/jens
'77 CB550K Technical rebuild done and riding. Cosmetics must wait till winter
'78 CB550K3 beautifull but engine needs rebuild.

Offline cafe75-550

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Re: What rear wheel is this?
« Reply #6 on: January 13, 2007, 04:52:16 PM »
To be honest I don't know of any identifying marks myself, I've seen them with stickers on them before but I'm not sure if they were stamped with anything, just going off of its appearance. Maybe once you get it off the bike you could take some close up shots of it and start a thread with "dresda" in it, I'm sure if anyone knows they're on here somewhere...
New bike!
'07 Triumph Speed Triple 1050
Never enough projects!
'75 CB550 "Cafe", '76 CB550 parts bike
'64 Norton Atlas featherbed/'71 Triumph 750 Triple (Triton project)
'68 BSA Thunderbolt (frame and cases, project in the wings)
'57 Triumph Thunderbird (frame and mostly complete engine)

Offline jensk

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Re: What rear wheel is this?
« Reply #7 on: January 14, 2007, 01:26:21 AM »
Maybe I should change my view on this bike that i got real cheap (cheap in danish terms - please read on). My goal was to find a bike that I could restore to original looks as many of the bikes I see on this forum. I thought that this one was  - well not the best candidate - but doable when the unoriginal part was changed. Frame was true, Engine not stuck etc...

I Denmark there aren't that many bikes in original looks because the tax/registration fee on bikes are very high - above 200% of the bikes imported value. So a new bike costing $10000 of the factory/importers will cost more than $30000 with license plates on the street. The effect of this is that a poor youngster that want's to ride a bike can't afford a decent bike. So al the young dudes are loking for +20 years old bikes to buy and run. Theese old bikes aren't allways in a state that they can withstand the rough riding a new "energetic" young rider wants to ride with. So many of theese bikes are lost due to to rough handling of the driver and to little maintenance.

Another factor is our climate. We live in the so called "rust belt" where the temp in the winter months passes freezing point (0 degrees celsius) 80 times or more per year. The streets are poured over with salt to melt the ice forming. at the same time the humidity is high. Because of the high tax on cars and bikes the young guys with the old bikes can't afford another bike/car to use in the winther. The old bikes are run throughout the year in salt, humidity...... They are rusting like ...... The upside of this is that we have a well established chroming industry that can take the old chrome of your part and put new thick chrome that can withstand the weather and the salt at low prices.

At the same time the very high prices of bikes in Denmark has the effect that there aren't that many barn bikes. Who would "forget" a bike worth $30000 in the barn for years? I know about great many danish classic/veteran car and bike enthusiasts are importing old bikes and cars from abroad to restore and run.

So it is difficult finding good objects for an restoration project in Denmark and nothing like this herdly ever happens:
http://www.sohc4.us/forums/index.php?topic=17276.30.

I thought that my present project bike was a good restoration candidate since it wasn't in to bad a state, engine turning, limited amount of rust in the frame etc. The issue about the possible Dresda swingarm makes me reconsider the goal of this restauration. Maybe this should be a cafe'd bike like yours since it has so many parts that i need to change to get id back to the original state.

My major problem with the decision to make this a cafe is that I would also like to have a restored beauty like the one in the link above. It is sooooo beautifull, it looks exactly like the dreams of my youth did. So if I decide to make the present a cafe'd bike I will have to go and find another candidate for a restoration back to original and finding the candidate is the difficult part.

Anyway when i have dismounted the swingarm of the bike i will post pictures to se if anybody can identify it as a dresda swingarm.
'77 CB550K Technical rebuild done and riding. Cosmetics must wait till winter
'78 CB550K3 beautifull but engine needs rebuild.

Offline cafe75-550

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Re: What rear wheel is this?
« Reply #8 on: January 14, 2007, 02:05:55 AM »
From what I can see in your photo your bike is definetely a good candidate for restoration. Whether to go stock or cafe' is a totally different point, but I wouldn't base my decision on a swing arm. If it is a Dresda it could certaintly help offset some cost of your restoration. Also from the photo it doesn't seem like you have a whole lot of parts to change, the swingarm/shocks/chainguard aren't stock but the frame, pegs, fenders, electrical and the rest all look original to me. And original parts are pretty easy to find from ebay and other sources. If what you really want is an original bike I think you've got a decent start.

Its funny how things work out, the bike I have was fairly stock when I bought it, although in need of a some work, and in turning it into a cafe I've taken almost all the stock pieces off of it and spent quite a bit of time finding/making suitable cafe' parts. See my gallery here http://www.sohc4.us/gallery/v/members/personal/cafe75-550/?g2_page=1

Also, if you're looking for anything specific as far as original stuff goes I have quite a few parts laying around that I could part with, as you can see I took most of the original bits off of mine. All of my parts are for '75 and '76 K models, but some are interchangeable with the '77. I have handlebars, a couple of chainguards, pegs, controls, turn signals, grab rails, mirrors etc... ( if you see it on the first picture of my bike and not on the later ones it sitting about somewhere)

And if you do decide to return the swingarm to stock I would be very interested in yours, Dresda or not, but if it is a Dresda I'm sure you'll have plenty of people interested in it...

Hope this helps! And good luck with the bike!
New bike!
'07 Triumph Speed Triple 1050
Never enough projects!
'75 CB550 "Cafe", '76 CB550 parts bike
'64 Norton Atlas featherbed/'71 Triumph 750 Triple (Triton project)
'68 BSA Thunderbolt (frame and cases, project in the wings)
'57 Triumph Thunderbird (frame and mostly complete engine)

Offline bryanj

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Re: What rear wheel is this?
« Reply #9 on: January 14, 2007, 04:22:47 AM »
The wear indicator gets lost when the cam is removed to de-sieze and the sprocket plate regularly gets junked when a new sprocket is fitted. The only way to be 100% certain is to compare with a known wheel
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!