Now I am confused. You cannot fit a 45mm prop on a 1/4" shaft - so what do you have?
To use the 3/16" bored props (the most suitable for you), get this: http://www.offshoreelectrics.com/pro...?prod=ose-1290
Your motor and hull will need a minimum prop diameter of 55mm and even that is on the small side. Don't worry so much about pitch right now, get props with a 1.4 pitch ratio to start (means diameter x 1.4 = pitch). You have been given several suggestions between 57mm and 65mm. For your first try an easy to find prop is the x457/2. It is large enough to load your motor, give good speed and decent run times. Realize that decent run times with your setup will depend on the packs you have - most use a minimum of 6500 mAh and most go to 10,000 mAh. This capacity eases the strain on the ESC and lets you run longer. But regardless, you need to check the motor, ESC and pack temps carefully every time you put on a new prop. Pull the boat in after two minutes and check the temps (use a timer!). If the temps are below 120*F and the packs have at least 50% left, then try another minute. You are trying to determine how long you can run safely with the setup. Once you have an idea of how your boat handles that prop, you can go up in size. If you start too large and burn up your equipment, you will not be happy.
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To use the 3/16" bored props (the most suitable for you), get this: http://www.offshoreelectrics.com/pro...?prod=ose-1290
Your motor and hull will need a minimum prop diameter of 55mm and even that is on the small side. Don't worry so much about pitch right now, get props with a 1.4 pitch ratio to start (means diameter x 1.4 = pitch). You have been given several suggestions between 57mm and 65mm. For your first try an easy to find prop is the x457/2. It is large enough to load your motor, give good speed and decent run times. Realize that decent run times with your setup will depend on the packs you have - most use a minimum of 6500 mAh and most go to 10,000 mAh. This capacity eases the strain on the ESC and lets you run longer. But regardless, you need to check the motor, ESC and pack temps carefully every time you put on a new prop. Pull the boat in after two minutes and check the temps (use a timer!). If the temps are below 120*F and the packs have at least 50% left, then try another minute. You are trying to determine how long you can run safely with the setup. Once you have an idea of how your boat handles that prop, you can go up in size. If you start too large and burn up your equipment, you will not be happy.
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