[Healeys] 100 generator pulley diameter

[Michael Salter]

Very possible John. My BN1 is B.#174 and has what certainly appears to be
the original generator being dated the month before production.
The problem, as I'm sure you are aware, is that in days gone by it was
quite common for exchange units to get "mixed up", a case of "this one's
close enough!"

M

On Tue., Jul. 11, 2023, 4:54 p.m. john harper, <ah100tech at gmail.com> wrote:

> Micheal
>
> I was confused by some of the measurements that others had made but now I
> can confirm that 1B 1727 is 3.625" in diameter
>
> However, the A70 Hereford and the A90 Atlantic had a larger diameter
> pulley 1B 1114 and this may have been fitted to a very early 4 cylinder 100.
>
> On Tue, 11 Jul 2023 at 12:59, Michael Salter <michaelsalter at gmail.com>
> wrote:
>
>> My apologies regarding the diameter of the 100 generator pulleys.
>> I made the unforgivable mistake of not zeroing my caliper before taking a
>> measurement.
>> The original pulleys 1B1727 were 3.625" in diameter.
>> I have four in my box of spares, never know when you might need one, an
>> they are all exactly the same diameter plus or minus a few thou.
>>
>> M
>>
>> On Sun., Jul. 9, 2023, 8:52 a.m. Michael Salter, <michaelsalter at gmail.com>
>> wrote:
>>
>>> The outside diameter of the originals is 3.2" Mark.
>>>
>>> M
>>>
>>> On Sun., Jul. 9, 2023, 6:28 a.m. Mark Donaldson, <
>>> ardmorebusiness at xtra.co.nz> wrote:
>>>
>>>> Learned gentlemen,
>>>>
>>>>
>>>>
>>>> The pulley on my 1956 BN2 is 3½” diameter.  I believe it to be
>>>> original.  I’ve owned the car for 45 years.
>>>>
>>>>
>>>>
>>>> A friend has a BN1 with a pulley diameter of just 3”.  He thinks it is
>>>> original.   I don’t.  It got me thinking.
>>>>
>>>> I believe his is incorrect as it was converted here in NZ from a LHD
>>>> import some 30 years ago.  BN1L 226180
>>>>
>>>> The car has some clumsy conversions made to change it to RHD, so I
>>>> don’t know what else might have been ‘cobbled up’ to get the car on the
>>>> road.
>>>>
>>>>
>>>>
>>>> Can somebody of you please confirm that 3½” is correct.
>>>>
>>>>
>>>>
>>>> That said, I need another for a second 100 engine I am building as a
>>>> spare.
>>>>
>>>> They seem to be scarce down here in NZ, and repros seem to be rather
>>>> expensive.
>>>>
>>>>
>>>>
>>>> Fingers crossed.
>>>>
>>>>
>>>>
>>>> Mark
>>>>
>>>> Ardmore
>>>>
>>>> NZ
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