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Hallo Kas,
I would try a bike oil, because these oil ought to be be suitable for a
gearbox, because, in a bike, engine and gearbox have a common oilcirculation,
so there should be no worries about the gears in the gearbox and overdrive.
Less friction would mean cooler oil as a result, but maybe todays friction
modifiers are more effective?
Marcel
Van: "Kas Kastner" <kaskastner@gmail.com>
Aan: "van mulders marcel" <van.mulders.marcel@telenet.be>
Verzonden: Zondag 16 december 2018 18:37:30
Onderwerp: Re: [Fot] bike engine oil for overdrive gearbox?
Just for what it might be worth, I used a synthetic oil back in late 1959 to
see if its resistance to heat would hlep, no change. The only thing that made
the difference was a cooler on the trnsmission oil.
Never be beaten by equipment.
On Sun, Dec 16, 2018 at 9:25 AM van.mulders.marcel--- via Fot < [
mailto:fot@autox.team.net | fot@autox.team.net ] > wrote:
Like most TR racers I believe that an overdrive gearbox is worth some laptime
on most racetracks. But there are some drawbacks :9.5kgs weight penalty and the
gap between 4th gear and 4th overdrive gear is too big. There is also a
considerable amount of power loss when the overdrive is engaged because of the
friction in the overdrive gears : but I think that in general modern engine oil
can reduce the friction in the overdrive, compared to GL-4 gear oil, because it
has much better friction modifiers. But are these friction modifiers compatible
with the clutch in the overdrive?? Classic Mini's and most bikes have 1 oil pan
for both engine and gearbox : what about using a modern bike oil or a modern
(synthetic) classic mini oil in an overdrive gearbox to reduce the friction in
the overdrive and gain some acceleration when 4th overdrive gear is engaged?
Marcel
_______________________________________________
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Archive: [ http://www.team.net/pipermail/fot |
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<html><body><div style=3D"font-family: Verdana, Arial, Helvetica, sans-seri=
f; font-size: 10pt; color: #000000"><div>Hallo Kas,</div><div>I would try a=
bike oil, because these oil ought to be be suitable for a gearbox, because=
, in a bike, engine and gearbox have a common oilcirculation, so there shou=
ld be no worries about the gears in the gearbox and overdrive. Less frictio=
n would mean cooler oil as a result, but maybe todays friction modifiers ar=
e more effective?</div><div>Marcel</div><div><br></div><hr id=3D"zwchr" dat=
a-marker=3D"__DIVIDER__"><div data-marker=3D"__HEADERS__"><b>Van: </b>"Kas =
Kastner" <kaskastner@gmail.com><br><b>Aan: </b>"van mulders marcel" &=
lt;van.mulders.marcel@telenet.be><br><b>Verzonden: </b>Zondag 16 decembe=
r 2018 18:37:30<br><b>Onderwerp: </b>Re: [Fot] bike engine oil for overdriv=
e gearbox?<br></div><br><div data-marker=3D"__QUOTED_TEXT__"><div dir=3D"lt=
r">Just for what it might be worth, I used a synthetic oil back in la=
te 1959 to see if its resistance to heat would hlep, no change. The o=
nly thing that made the difference was a cooler on the trnsmission oil.<br =
clear=3D"all"><div><div dir=3D"ltr" class=3D"gmail_signature"><p><strong><s=
pan color=3D"#000099" data-mce-style=3D"color: #000099;" style=3D"color: #0=
00099;">Never be beaten by equipment.</span></strong></p></div></div><br></=
div><br><div class=3D"gmail_quote"><div dir=3D"ltr">On Sun, Dec 16, 2018 at=
9:25 AM van.mulders.marcel--- via Fot <<a href=3D"mailto:fot@autox.team=
.net" target=3D"_blank">fot@autox.team.net</a>> wrote:<br></div><blockqu=
ote class=3D"gmail_quote" style=3D"margin: 0px 0px 0px 0.8ex; border-left: =
1px solid #cccccc; padding-left: 1ex;" data-mce-style=3D"margin: 0px 0px 0p=
x 0.8ex; border-left: 1px solid #cccccc; padding-left: 1ex;"><div><div styl=
e=3D"font-family: Verdana,Arial,Helvetica,sans-serif; font-size: 10pt; colo=
r: #000000;" data-mce-style=3D"font-family: Verdana,Arial,Helvetica,sans-se=
rif; font-size: 10pt; color: #000000;"><div>Like most TR racers I believe t=
hat an overdrive gearbox is worth some laptime on most racetracks. But ther=
e are some drawbacks :9.5kgs weight penalty and the gap between 4th gear an=
d 4th overdrive gear is too big. There is also a considerable amount of pow=
er loss when the overdrive is engaged because of the friction in the overdr=
ive gears : but I think that in general modern engine oil can reduce the fr=
iction in the overdrive, compared to GL-4 gear oil, because it has much bet=
ter friction modifiers. But are these friction modifiers compatible with th=
e clutch in the overdrive?? Classic Mini's and most bikes have 1 oil pan fo=
r both engine and gearbox : what about using a modern bike oil or a modern =
(synthetic) classic mini oil in an overdrive gearbox to reduce the friction=
in the overdrive and gain some acceleration when 4th overdrive gear is eng=
aged?</div><div>Marcel</div></div></div>___________________________________=
____________<br>
<a href=3D"mailto:fot@autox.team.net"; target=3D"_blank">fot@autox.team.net<=
/a><br>
<br>
<a href=3D"http://www.fot-racing.com"; rel=3D"noreferrer" target=3D"_blank">=
http://www.fot-racing.com</a><br>
<br>
et=3D"_blank">http://www.team.net/donate.html</a><br>
Archive: <a href=3D"http://www.team.net/pipermail/fot"; rel=3D"noreferrer" t=
arget=3D"_blank">http://www.team.net/pipermail/fot</a><br>
skastner@gmail.com" rel=3D"noreferrer" target=3D"_blank">http://autox.team.=
net/mailman/options/fot/kaskastner@gmail.com</a><br>
<br>
<br>
</blockquote></div><br></div></div></body></html>
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