Author Topic: Prop size for Bavaria 50 with TMD22?  (Read 1939 times)

breath2000

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  • Boat Model: bavaria 50
Prop size for Bavaria 50 with TMD22?
« on: June 30 2024, 14:43 »
Which three blade propeller do i need for a 2001 Bavaria 50 with a TMD22?

cegri

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  • Boat Model: Bavaira 39C
  • Boat Year: 2007
Re: Prop size for Bavaria 50 with TMD22?
« Reply #1 on: July 03 2024, 12:28 »
See the attached

breath2000

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Re: Prop size for Bavaria 50 with TMD22?
« Reply #2 on: July 03 2024, 16:23 »
Thank you for that.

It looks like an 18x16 if the D2 engine is similar to a TMD22

Happysailor

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  • Boat Year: 2014
Re: Prop size for Bavaria 50 with TMD22?
« Reply #3 on: July 04 2024, 11:13 »
Unless you would like to get overloaded and black smoke or lack of speed/ power at full revs, consult your VP agent for the proper propellor. Diameter and pitch are given factors, just guessing from lists can create poor results..

symphony2

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Re: Prop size for Bavaria 50 with TMD22?
« Reply #4 on: July 04 2024, 18:56 »
The TMD22 is a very different engine from the D2 75. It runs at much higher rpm, I think 4500 rpm whereas the D2 75 is rated for 3000rpm. They use the same reduction ratio of 2.47 so the shaft speed for the D2 will be much lower and therefore a bigger diameter propeller. My calculations based on 75hp @ 4500 and 2.47:1 reduction in a 49/50 gives a 3 blade 16*10.

Do you have an existing propeller to get a guide as to size?

breath2000

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Re: Prop size for Bavaria 50 with TMD22?
« Reply #5 on: July 05 2024, 12:43 »
yes and no
The propeller has no numbers and is so electrolicized that I can't determine the diameter.

symphony2

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Re: Prop size for Bavaria 50 with TMD22?
« Reply #6 on: July 05 2024, 17:38 »
The size should be stamped on the hub. Often difficult to see because of a build up of paint

Suggest you try Frank and Jimmies in Fort Lauderdale who list Volvo Saildrive propellers on their website