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Jun 14th, 2026
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Joined: Jun 2012
Posts: 508 Likes: 1
Dreiradschubser Talk Morgan Regular
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OP
Dreiradschubser Talk Morgan Regular
Joined: Jun 2012
Posts: 508 Likes: 1 |
4 aircooled cylinders, 7 tires, not waterproof: my m3w Bluebelle (2013) and my 2CV Gundel (1990)
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Joined: Mar 2013
Posts: 360
Learner Plates Off!
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Learner Plates Off!
Joined: Mar 2013
Posts: 360 |
And the gear ratio is? Breath baited. PJB
4/4 2.0 Zetec SSL front and rear
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Joined: Sep 2011
Posts: 14,748 Likes: 158
Member of the Inner Circle
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Member of the Inner Circle
Joined: Sep 2011
Posts: 14,748 Likes: 158 |
The gears look very similar to those used in the Moto Guzzi bevel drives. They seldom give any problems but, to be fair, they don't have to cope with the tremendous torque pulses of the SS motor.
Peter ![[Linked Image]](http://bradley.it/public_images/drive.jpg)
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Joined: Oct 2012
Posts: 6,538
Talk Morgan Sage
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Talk Morgan Sage
Joined: Oct 2012
Posts: 6,538 |
Great to see the internals - thanks v much for posting - very interesting! 
Neil
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Joined: Jan 2012
Posts: 14,976 Likes: 2
Member of the Inner Circle
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Member of the Inner Circle
Joined: Jan 2012
Posts: 14,976 Likes: 2 |
Interesting - thanks for sharing.
Richard
1976 4/4 4 Seater
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Joined: Apr 2013
Posts: 1,711 Likes: 1
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: Apr 2013
Posts: 1,711 Likes: 1 |
So which bit makes all the noise? 
Graeme: 2011 +4
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Joined: Feb 2012
Posts: 112
L - Learner Plates On
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L - Learner Plates On
Joined: Feb 2012
Posts: 112 |
Hi this is probably a silly question,why did you strip the bevel box?
The pics are great thank you for sharing them.
Regards David
,,BSA Goldstar,Honda CB1100R. Jaguar FTypeS Porsche Cayman S
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Joined: Dec 2008
Posts: 22,358 Likes: 353
Roadster Guru Member of the Inner Circle
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Roadster Guru Member of the Inner Circle
Joined: Dec 2008
Posts: 22,358 Likes: 353 |
On a rough count it looks to be about 32/16 - so 2:1.
Very interesting!
DaveW
'05 Red Roadster S1
'16 Yellow (Not the only) Narrow AR GDI Plus 4
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Joined: Jun 2012
Posts: 2,242 Likes: 72
Talk Morgan Expert
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Talk Morgan Expert
Joined: Jun 2012
Posts: 2,242 Likes: 72 |
I thought that the bevel gearbox gears are straight cut, hence all the noise. This looks like helical gears to me, a crown wheel and pinion, like mosts diffs. They ususally make noises because of incorrect preload or worn bearings. Nice to see the insides. Also be interested in the reason for the strip of the gearbox.
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Joined: Aug 2012
Posts: 983
Talk Morgan Regular
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Talk Morgan Regular
Joined: Aug 2012
Posts: 983 |
I thought that the bevel gearbox gears are straight cut, hence all the noise. This looks like helical gears to me, a crown wheel and pinion, like mosts diffs. They ususally make noises because of incorrect preload or worn bearings. Nice to see the insides. Also be interested in the reason for the strip of the gearbox.
I had also understood that the bevel bow used straight cut gears. The NVH mod make much more sense with helically cut gears. The splines on the input/pinion shaft don't look to be in very good shape though.
Philip.
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