Author Topic: Likely gearbox ratio TMD22?  (Read 4162 times)

blue-max

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Likely gearbox ratio TMD22?
« on: May 17 2016, 22:03 »
The plate on the gearbox is missing so  no serial  number or part number. Engine is TMD 22 75 hp, gearbox is type SM2 driving 35 mm shaft. I don't have prop size to hand. Anyone care to guess the likely ratio?   

tiger79

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Re: likely gearbox ratio TMD22
« Reply #1 on: May 18 2016, 11:55 »
If it's a straight gearbox (ie no downward angle on the output shaft, it's probably 2.3 to 1.  If it has a downward angle, it could be 2.4 or 3.0 to 1.

Yngmar

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Re: likely gearbox ratio TMD22
« Reply #2 on: May 18 2016, 18:00 »
You should be able to identify the gearbox and look up the exact ratio on this sheet: http://www.volvopenta.com/SiteCollectionDocuments/Penta/Misc/drive_1_oil_rec_7745608.pdf
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blue-max

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Re: likely gearbox ratio TMD22
« Reply #3 on: May 18 2016, 19:30 »
yes shaft is in line with gearbox on an incline, no  drop.

tiger79

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Re: likely gearbox ratio TMD22
« Reply #4 on: May 18 2016, 20:53 »
You should be able to identify the gearbox and look up the exact ratio on this sheet: http://www.volvopenta.com/SiteCollectionDocuments/Penta/Misc/drive_1_oil_rec_7745608.pdf

Unless I'm missing something, that sheet doesn't mention MS2 gearboxes at all. ???

Yngmar

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Re: likely gearbox ratio TMD22
« Reply #5 on: May 19 2016, 07:58 »
(formerly) Sailing Songbird  ⛵️ Bavaria 40 Ocean (2001)

blue-max

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Re: likely gearbox ratio TMD22
« Reply #6 on: August 12 2016, 20:08 »
Thanks for the chart - only just noticed. Still confused as VP agent tells me my engine has been mated with an angled drive 0nly mine is straight. Will send a photo for confirmation.