Hi Ian.

I know the 3-notch lockrings you are talking about. They were really
common - I've seen them on a lot of different models. The tool you
specified should work to remove it. At the shop where I work we have
one similar to that, except that instead of the 3-tooth side it has
another single tooth, with a different diameter circle. One side is
good for headset lockrings and the other for BB lockrings. It is a
Park Tool too - I don't know whether they still make it though. Hope
that helps...


--- In MiyataSpecTour@yahoogroups.com, "ian_kersey" <ikersey@...> wrote:
>
> Leigh,
>
> While the '81 catalog shows the 610 model also coming in burgundy
> with front fork decals, it lists and shows this model with a Sun Tour
> Vx front derailleur, Dia Compe 610 centerpull brakes with safety
> levers, and PUB-10 (?!) stem-mounted shifters.
>
> There is no 610 model listed in the '79 catalog -- closest model is
> the 600, whose specs are listed. However, the 600 model is not
> pictured in this catalog. The 600 is described as coming in Cinnamon
> Red, with a Sun Tour Seven front der. and Dia Compe centerpull brakes.
>
> Based on Darrell's pix and the catalog information in front of me, I
> still think that his mystery bike is an '80 Miyata model 1000.
>
> To change the subject -- I've a question for the forum: both my '81
> Miyata 1000 and my '73 Fuji Finest have a funky headset lockring that
> has three equidistant notches in it, kinda like a BB lock ring.
> Can't get the dang thing off to adjust/repack either headset. I've
> seen a Park tool that might work (tool # HCW-5, see
> http://www.parktool.com/products/detail.asp?cat=25&item=HCW-5), but
> the on-line catalog refers to it as a BB tool and states that its
> minimum diameter between the notches is 40mm. I don't have a caliper
> to measure, but using my eyeball and metric tape, I don't think the
> lockring's diameter is much more than 35mm. Has anyone else run into
> a problem with this old type of lockring and is the Park HCW-5 tool
> the weapon of choice for removing it? Any other options?
>
> Cheers, and thank you in advance for any advice on my lockring blues!
>
> Ian Kersey
> Williamsburg,VA
>