Technical, Techniques, Hints, and Tips > Other Technical Questions...

3 or 4 bladed prop, that is the question.

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Popeye:
What has to be taken into consideration  when deciding what type  of  prop  to use......or doesn't  it really  matter?

malcolmfrary:
Start off with the type of boat.

tsenecal:
If it is a scale model of a real boat, what type of prop does the real boat have....

cdnfurball:
Sorry, but here's more questions for you to consider......
- size of prop
- pitch of the prop
- number of turns of the motor
And as you've asked, number of blades on the prop


Questions for a scale speed for a scale boat

Hurric123:
Hi full size boats sometimes will fit 3 or 4 blade props simply because there is not enough room to fit a large enough diameter 2 blade to match to the power requirements.
With full size there are a lot of factors involved in chooising  props. Likewise on a yacht they will often only fit a 2 blade so they can park it behind the skeg to reduce drag when sailing. This can be a achieved by putting a mark in the shaft so they can line up the prop and shaft from the inside. I am sure many of you know all this but it's interesting stuff.
Regards

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