[Healeys] Lightweight Flywheel

[Michael Salter]

Appreciate your input Bill.
If your grasp the concept of the article you will probably understand that
lightening the flywheel will actually result in less cyclical deformation
of the crankshaft and could conceivably lengthen its life.
The problem however is that the rorational oscillation of the lightened
flywheel and therefore the gearbox input shaft will increase.
The BN1 gearbox is barely up to the job as it is and it is a certainty that
the rate of fatigue of the gear teeth will also increase,
With the stronger "C" series gearbox of the BN2 that does not seem to be a
problem but it is in the BN1.

M

On Fri, Jan 4, 2019, 7:13 PM WILLIAM B LAWRENCE <ynotink at msn.com wrote:

> I have a lightened flywheel in my BN1 (26 pounds as opposed to 42) and
> I've used it for over 13 years with no known ill effects. The engine has
> been out for an unrelated failure and the crank checked out crack free. I
> use the car for highway cruising and around town and I don't spend much
> time above about 3200 RPM. I have Mike Lempert's 3.54:1 gears (hypoid final
> drive) and the 28% overdrive which gives an 80 MPH cruise at around that
> RPM. No land speed records, but no speeding tickets either...
>
> Bill Lawrence
> BN1 #554
> ------------------------------
> *From:* Healeys <healeys-bounces at autox.team.net> on behalf of Michael
> Salter <michael.salter at gmail.com>
> *Sent:* Friday, January 4, 2019 1:03 AM
> *To:* Charlie Schott
> *Cc:* healeys at autox.team.net
> *Subject:* Re: [Healeys] Lightweight Flywheel
>
> Read this first
>
> http://www.netbug.net/blogmichael/2017/01/03/austin-healey-100-crank-failures/
>
> On Thu, Jan 3, 2019, 7:42 PM Charles Schott <schottc at knology.net wrote:
>
> Has anyone used a lightweight flywheel on their 100 BN1? I plan on going
> with a complete Le Mans kit and a lightweight flywheel and the car will be
> for street use. If you have, what are your thoughts on it? Thanks.
>
> Regards,
>
> Charlie Schott
>
> ------------------------------
> *From: *"Michael Salter" <michael.salter at gmail.com>
> *To: *"Bob Spidell" <bspidell at comcast.net>
> *Cc: *healeys at autox.team.net
> *Sent: *Thursday, December 20, 2018 9:51:43 AM
> *Subject: *Re: [Healeys] tri power for sale
>
> I encourage as many people as possible to "M" up their 100's.
> Makes original cars that much more valuable.
>
> M
>
> On Thu, Dec 20, 2018, 9:52 AM Bob Spidell <bspidell at comcast.net wrote:
>
> My understanding is that the 'kits' installed by dealers varied; the
> complete one--the one done at the Healey shop--includes higher
> compression pistons, a more aggressive cam, some suspension tweaks
> (stiffer shocks, maybe a larger anti-sway bar), a different distributor
> and, of course, the louvred bonnet.
>
> Someone wrote up a list of mods that could be done--even better cam
> profile, for example--that could be done to a 'stock' BN1/2 to achieve
> performance superior to a M, while keeping the original 'flavor' of the
> car.
>
> Bob
>
> On 12/19/2018 11:14 PM, sentenac.rw at gmail.com wrote:
> > Well, for starters you can look at page A34 of the  Moss Motors
> > catalogue.  The section labeled "100M Conversion".  It may be a
> > different page on the latest catalogue.  Carbs, Manifold set, cold air
> > box,etc.
> >
> > -Roland
> >
> > On Wed, 19 Dec 2018 18:48:10 -0500 (EST), you wrote:
> >
> >> I recently purchased a 1955 100-4 for a frame off restoration. Since
> I'm going to rebuild the engine, I'd like to give it the "M" upgrade. Does
> anyone know where I can purchase the parts for what they call the LeMans
> kit? Thanks.
> >>
> >> Regards,
> >>
> >> Charlie Schott
> >>
> >>
> >>
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