Hello group,
My name is Roland Kruijer and I am a memeber since about two years now.
I own a little electric boat like this one: http://www.electraboat.com/
I changed the motor in the boat for this one: jpg P7051547. I have attached the specifications of this motor in pdf.
That motor has a controller: jpg PA101651
It all works ok but I think the motor can do better.
The boat has two 12V 210 aH batteries in series so 24V 210 aH. The motor uses a v-belt to transfer the power to the propellor axle.
On the motor axle it has a 100 mm pulley.
On the propellor axle I have a 74 mm pulley which has a 8.2" X 12 pitch propellor.
Oh, I know that the hull speed can be about 8 - 9 kph. The boat weighs about 400 kg including me.
It seems the motor doesn't get to 1100 rpm, allthough I don't have a rpm meter. Does this happen because the motor can't get to this rpm because of the pulleysizes? Or is the resistance from the propellor(water) too big to get to this rpm?
I have experienced a bit with different pulley size but I'd like to know if there's a way to calculate the best performance possible with this motor. I want some more speed/torque from this engine in relation to the propellor / waterresistance
What would be the best proportion of pulleys for this given motor?
I am also thinking about placing an extra battery to run the motor on 36 V. Would that give the boat the extra power I want?
Ok guys, I know my boat is not as big as most boats I see here in the group, but maybe someone can help me figure out what is the best way to go!
Thanks so far,
Roland Kruijer
The Netherlands
Attachment(s) from Roland Kruijer
2 of 2 Photo(s)
1 of 1 File(s)
No comments:
Post a Comment