Small dc brushed motors

[Bob McParticipant @bobmc91481]

Hi All…

am in the process of making an r/c boat, I need to find out which motor to use, I have already used a '400' type motor but have no idea what this means … I will require a larger motor for the next build so need to know volts/amps/rpm/mechanical size etc…. is there a chart for all this?

will be grateful for any information….Bob.

Edited By Bob Mc on 23/08/2021 08:09:09

[Bob McParticipant @bobmc91481]

Manufacturers size designations.

[michael howarth 1Participant @michaelhowarth1]

A lot of the information that you require can be found on The Component Shop website catalogue.

Mick

[CirclipParticipant @circlip]

Try this site Bob, :- Model Boat Mayhem – Index

Regards Ian.

[Jouke van der VeenParticipant @joukevanderveen72935]

Some years ago I completed a 1 meter long tugboat, originally built by my son 25 years ago.

Searching for a motor I found information on the internet to use a 12V brushed motor from a car interior blower.

Cheap and with sufficient power to give the boat the speed belonging to its scale.

[Ron LadenParticipant @ronladen17547]

Have a look at MFA COMO DRILLS they have a large selection of motors and motors with gearboxes, they also give the full spec for all their types.

[Joseph Noci 1Participant @josephnoci1]

Posted by Bob Mc on 23/08/2021 08:08:04:

Hi All…

am in the process of making an r/c boat, I need to find out which motor to use, I have already used a '400' type motor but have no idea what this means … I will require a larger motor for the next build so need to know volts/amps/rpm/mechanical size etc…. is there a chart for all this?

will be grateful for any information….Bob.

Edited By Bob Mc on 23/08/2021 08:09:09

Hi Bob.

The term '400 type motor' ( called Speed 400 back then..) dates back a while, and very loosely referred to a motor around near 38mm long, a 500 motor was near 55 or 56mm long, etc. The old 400 DC motors were around 100watts max or so, 10 to 12 amps typically. If I recall, the Speed 400 was around 30mm in diameter.

Are you set on a DC motor? Do you already have the DC PWM RC speed controller? If so that would set some limits on the motor amps/volts choice I guess.

If you are not set on DC, the RC brushless DC motors are a good option. Much more efficient and more power in smaller packages compared to the somewhat dated construction of the cheap Speed series DC motors.

A visit to your local RC hobby shop will deliver..

Eg:

Howes Models UK

E-Flight Park 400

Example E-FLight motor chart

Joe

[Bob McParticipant @bobmc91481]

Sorry to reply so late …

was away for a few days and didn't see the responses….thanks to all who replied to my question, these have been most helpful…

rgds..Bob.

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