[TR] Electric Fans: Something Different
TERRY SMITH
terryrs at comcast.net
Tue Sep 11 07:27:08 MDT 2018
So what exactly is the energy co-efficiency of heavy vs. light flywheel? Heavy means more torque to take you up a steeper hill in higher gear, whereas light means less mass to move on acceleration so prompter speed? Something like that?
Terry Smith, TR3A TS 58667
New Hampshire
> On September 10, 2018 at 2:01 PM Rye Livingston <ryel at mac.com> wrote:
>
> For what it's worth, I switched to the 9lb alloy flywheel on my TR3. I believe the stock one is 32 lbs. I don't notice any difference getting started in 1st gear, and it does spin up nice and fast.
>
> Rye
> PH: 530-FIND-RYE
>
> On Sep 10, 2018, at 06:26 AM, John Macartney <john.macartney at ukpips.org.uk> wrote:
>
>
> > > I think I'm correct in saying one of the reasons for the heavier flywheel is
> > that the wet liner four engine was originally designed for the Standard
> > Vanguard with a two speed (low and high) gearbox with overdrive and also the
> > Ferguson tractor - both of which engines needed to develop shedloads of
> > torque at very low engine speeds. In both instances, much heavier flywheels
> > were required. Even if the early TR's could have got away with lighter
> > units, that would have meant having two different units. In those early post
> > WW2 days, iron and steel in the UK was in such short supply that having a
> > 'common' flywheel across the range made economic sense from a production
> > cost viewpoint. Just an opinion
> >
> > Jonmac
> >
> > -----Original Message-----
> > From: Triumphs <triumphs-bounces at autox.team.net> On Behalf Of
> > jpaynepbr at cox.net mailto:jpaynepbr at cox.net
> > Sent: 23 July 2018 00:38
> > To: 'TERRY SMITH' <terryrs at comcast.net>; Randall <tr3driver at ca.rr.com>;
> > Andrew Uprichard <auprichard at uprichard.net>; George Haynes
> > <ghaynestr4 at aol.com>; triumphs at autox.team.net mailto:triumphs at autox.team.net
> > Subject: Re: [TR] Electric Fans: Something Different
> >
> > I believe the TR2/3/4 was more or less "balanced" internally. The flywheel
> > weighs about 3x what it needs to. I believe they used the flywheel to
> > smooth it out.
> >
> > Jonas Payne
> > PBR Consulting Services, LLC
> > 702.882.6711
> >
> >
> >
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