On or around Wed, 27 Aug 2008 21:53:37 GMT, "platypus"
<monotreme@blueyonder.co.uk> enlightened us thusly:

>Austin Shackles wrote:
>> On or around Wed, 27 Aug 2008 05:50:17 -0700 (PDT), Cane
>> <CaneUKRM@gmail.com> enlightened us thusly:
>>
>>> On 27 Aug, 11:00, ens...@bath.ac.uk (M J Carley) wrote:
>>>
>>>> I am fitting new steering head bearings to the 550/4. The lower
>>>> shell has gone in fine but the top one just will not shift and
>>>> still stands about 2mm proud of the headstock. I don't want to
>>>> hammer it more than I have (using the old shell to cover it) but it
>>>> has to be put in its place.
>>>>
>>>> Is there a magic puller type affair that will let me draw it into
>>>> place?
>>>
>>> Take it to a garage before you break it, you numpty.
>>
>> now now.
>>
>> I use a threaded rod with inserts to pull cycle bearings into place.
>> In my case, it's a 1/2" whitworth rod.
>>
>> For motorcycle ones, something a bit more meaty like 20mm might work
>> better.
>>
>> The essence of it is having things to fit the bearing shells which
>> make sure they pull parallel to the headstock and don't twist.
>
>I tend to favour using an appropriately-sized socket for such things, rather
>than odd washers.

that works, mostly. I could easy enough knock up inserts if anyone wanted
them, but the snag is that you need one for every type of bearing if you
want 'em to really fit, or at least every size bearing. Luckily, the cycle
ones are mostly only 2 sizes, although there are funny oversize ones for
oversize alu frames now.
--
Austin Shackles. www.ddol-las.net my opinions are just that
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