Subject: [Healeys] Lightened Flywheel

From: mitchell simmons <[email-masked]>
Date: Wed, 10 Mar 2021 14:29:35 -0500

Hello,
Anybody lightening and balancing flywheels ?………TOMS TOYS use to…. but no more

Thanks
Mitch
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From: Bluehealey via Healeys <[email-masked]>
Date: Thu, 11 Mar 2021 09:55:34 +0000

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A lighter flywheel also effects torque reaction of the engine block. As the t=
hrottle is blipped the engine block reacts and whips sideways in the opposit=
e direction to the crank. You all know this. With a lighter flywheel the eng=
ine reacts quicker (obvs).
My first Healey, a BJ8, had a hot cam (lumpy tickover) and a lightened flywh=
eel. All good you might think.  Unfortunately the torque reaction was enough=
 to crack and peel the engine mounts from the top of the chassis rails.  Now=
 I understand why the works cars had reinforcement on between the mounts and=
 the rails.

Alan - from my iPad

> On 11 Mar 2021, at 07:21, Kees Oudesluijs via Healeys <[email-masked].=
net> wrote:
>=20
> =EF=BB=BF
> A lightened flywheel does not reduce the torque the engine delivers, It re=
duces the inertia of the engine which will result in the engine revving up o=
r slowing down faster to enable quicker shifts (gears and overdrive) and a s=
lightly acceleration. It also means that when starting of from standstill yo=
u may stall easy initially and the gear changes are effected as you have to o=
perate the clutch pedal with much more feel. Drive-ability will suffer.=20
>=20
> Kees Oudesluijs
>=20
>=20
>=20
>=20
>=20
> Op 11-3-2021 om 07:41 schreef John Spaur via Healeys:
>> I have a DWR lightened flywheel but I wish I had known more before instal=
ling it. A lightened flywheel reduces the torque. Also the OD functions diff=
erently. There is not a lot of difference between the RPM's in third and fou=
rth gears. I am not sure how to explain it but hopefully someone else will.
>>=20
>> John
>>=20
>> -----Original Message-----
>> From: Healeys [mailto:[email-masked]] On Behalf Of mitche=
ll simmons
>> Sent: Wednesday, March 10, 2021 11:30 AM
>> To: [email-masked]
>> Subject: [Healeys] Lightened Flywheel
>>=20
>> Hello,
>> Anybody lightening and balancing flywheels ?=E2=80=A6=E2=80=A6=E2=80=A6TO=
MS TOYS use to=E2=80=A6. but no more
>>=20
>> Support Team.Net http://www.team.net/donate.html Suggested annual donatio=
n  $12.75
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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto">A lighter flywheel also effects torque reac=
tion of the engine block. As the throttle is blipped the engine block reacts=
 and whips sideways in the opposite direction to the crank. You all know thi=
s. With a lighter flywheel the engine reacts quicker (obvs).<div>My first He=
aley, a BJ8, had a hot cam (lumpy tickover) and a lightened flywheel. All go=
od you might think. &nbsp;Unfortunately the torque reaction was enough to cr=
ack and peel the engine mounts from the top of the chassis rails. &nbsp;Now I=
 understand why the works cars had reinforcement on between the mounts and t=
he rails.</div><div><br><div dir=3D"ltr">Alan - from my iPad</div><div dir=3D=
"ltr"><br><blockquote type=3D"cite">On 11 Mar 2021, at 07:21, Kees Oudesluij=
s via Healeys &lt;[email-masked]&gt; wrote:<br><br></blockquote></di=
v><blockquote type=3D"cite"><div dir=3D"ltr">=EF=BB=BF
 =20
    <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3DUTF-8"=
 =20
 =20
    <p>A lightened flywheel does <u><i><b>not</b></i></u> reduce the
      torque the engine delivers, It reduces the inertia of the engine
      which will result in the engine revving up or slowing down faster
      to enable quicker shifts (gears and overdrive) and a slightly
      acceleration. It also means that when starting of from standstill
      you may stall easy initially and the gear changes are effected as
      you have to operate the clutch pedal with much more feel.
      Drive-ability will suffer. <br>
    </p>
    <p>Kees Oudesluijs</p>
    <p><br>
    </p>
    <p><br>
    </p>
    <div class=3D"moz-cite-prefix">Op 11-3-2021 om 07:41 schreef John
      Spaur via Healeys:<br>
    </div>
    <blockquote type=3D"cite" cite=3D"mid:000001d71641$893dc110$9bb94330$@sb=
cglobal.net">
      <pre class=3D"moz-quote-pre" wrap=3D"">I have a DWR lightened flywheel=
 but I wish I had known more before installing it. A lightened flywheel redu=
ces the torque. Also the OD functions differently. There is not a lot of dif=
ference between the RPM's in third and fourth gears. I am not sure how to ex=
plain it but hopefully someone else will.

John

-----Original Message-----
From: Healeys [<a class=3D"moz-txt-link-freetext" href=3D"mailto:healeys-bou=
[email-masked]">mailto:[email-masked]</a>] On Behalf Of=
 mitchell simmons
Sent: Wednesday, March 10, 2021 11:30 AM
To: <a class=3D"moz-txt-link-abbreviated" href=3D"mailto:[email-masked].=
net">[email-masked]</a>
Subject: [Healeys] Lightened Flywheel

Hello,
Anybody lightening and balancing flywheels ?=E2=80=A6=E2=80=A6=E2=80=A6TOMS T=
OYS use to=E2=80=A6. but no more

Thanks
Mitch
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net/donate.html">http://www.team.net/donate.html</a> Suggested annual donati=
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</pre>
    </blockquote>
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