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Topics - TonUp

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Recommended Sources for Parts and Services / Castrol LM Grease = Comma General Purpose Grease ?

« on: October 10, 2017, 08:11:31 AM »

My tin of Castrol LM grease is empty.

I want to refill but Castrol no longer produce it.
Comma do a 500g General Purpose Lithium Grease. Has anybody used it? Is it a similar Honey colour to the Castrol original?

Amazon sell the Comma Grease;
https://www.amazon.co.uk/gp/product/B002E2QM6S/ref=ox_sc_act_title_3?smid=A3P5ROKL5A1OLE&psc=1

Bye the way - those empty tins of Castrol LM Grease are going for £15 on ebay!

CB500/550 / CB550F2 1977 rear wheel bearing size

« on: April 02, 2016, 10:56:07 AM »

I have just had the rear wheel drum lining trued up on a lathe and now need some new wheel bearings.
Just ordered a pair of bearings for "rear wheel CB550 '77" off ebay and I got two 6304-2RS. Now I realize that the right hand is a 6304 and the left hand is a larger 6305 size.

I am not an engineer, so I am not familiar with the bearing numbers.
Searched on ebay again for 6305 bearing and found this one;
6305 25x62x17mm 2RS Rubber Sealed SKF
http://www.ebay.co.uk/itm/6305-25x62x17mm-2RS-Rubber-Sealed-SKF-Radial-Deep-Groove-Ball-Bearing-/191514305444?hash=item2c972463a4:g:XN4AAOSwNSxU7KSX

Is this the correct bearing for a CB550F2 1977 left hand side? TIA
The 6304 bearing that I got is made by 'challenge' - should I junk it and get SKF bearing (as recommended by a mate in the pub last night).

Other Bikes / Honda SS50 1977

« on: January 04, 2016, 08:06:40 PM »

I am restoring a Honda SS50 1977 and I need some help!

First question, what are the correct wheel sizes for this bike?
I have a front wheel with 2.50 - 18 tyre (no markings on the rim) and on the rear I have 2.50-17 tyre on a 17x1.4 rim.
At a guess, the front rim should be a 17x1.4 same as the rear?
The front rim is pitted and the spokes could do with replacing anyway.

Next question, the bike currently has a Honda cub 90cc engine (HA02E - electric start, 12v) fitted.
I have the Honda 50cc engine as was originally fitted to the bike.
The 90 engine has a neutral, down 1st, down 2nd, down 3rd, down neutral rotary gearbox.
I am assuming the the 50 has a neutral, down 1st, up 2nd, up 3rd, up 4th gearbox.
Can I swop the gearbox from the 50 into the 90 engine?

I have a friend that has worked on a few of these cub engines and is happy to tackle the gearbox. Just need some pointers as to what is possible.

Thanks for any help!

Site Feedback / FAQ / How to... / server error

« on: March 17, 2014, 07:49:43 AM »

I cannot browse some of the threads on sohc.co.uk.
latest error message is;
The server encountered an internal error or misconfiguration and was unable to complete your request. Your administrator may not have enabled CGI access for this directory.

Replying or creating a new thread is a hit and miss event. blank screen, several attempts are required to post - I have found it easier to post text only then modify later to add photos. I have never experienced so many problems with a forum before?

CB500/550 / Is this a standard piston?

« on: March 16, 2014, 11:12:44 PM »

Popped the head off my CB550F2 to fit new cam chain and tensioner. My mates were curious to know if these are standard Honda pistons or first oversize or pattern? Any engine experts on the forum?

The bike has done 58,000 miles and I have been told that the bores look like they have been honed. Also the bores are in perfect as new condition "like a new bike, less than 10,000 mile".

CB500/550 / fitting a pattern seat

« on: March 10, 2014, 10:48:48 PM »

I have recently acquired a CB550F2, it came with a pattern seat 'fitted'. It rocks backwards and forwards pivoting on the lock / hinge bracket. None of the rubbers touch the frame.

Anyone got any tips on getting it to fit better? I have adjusted the lock pin as short and tight as possible and this has improved things a little. I might try relocating the hinge bracket next.

A simple fix (or so I thought) would be to remove and pack the rubbers but they are riveted on. $:-\$

CB500/550 / my 'new' CB550F2 '77

« on: February 28, 2014, 01:53:00 PM »

In the '70s I used to pop into Bill Head's Preston Honda and admire the jaw dropping, something new every week, Honda's.
in particular, I admired the CB550, gold badges, in your face chrome cupped clocks, finely engineered. A moment in time of Honda's motorcycle evolution. Unobtainable on an apprentice wage, also too big a bike for a beginner.

A friend of mine dropped off some motorcycle news the other week that he was throwing out. I read an article about James May's classic Honda collection. Well that fired a memory of my lunchtime excursions to Bill Head's. Made the 'mistake' of looking on the net and found a good example, so what could I do? How could I not buy it?

It now sits in my garage and will need some work to get it on the road. I will be posting updates as I go along and will no doubt need some advice from you guys.