Velineon 540XL Outrunner Equivalent - RC Groups
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Oct 08, 2012, 12:50 AM
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Velineon 540XL Outrunner Equivalent

Hello RCGroups,

I'm looking for an outrunner brushless motor which has similar specifications to the Traxxas Velineon 540XL used on the Spartan R/C boat. (Similar in terms of RPM and torque relationship mostly).

I ask this because I'm building a shallow water "torpedo" mock-up and for this, a waterproofed outrunner is ideal. (The open nature of an outrunner allows the motor to dry out easily after use). I want one with equivalent specs to the Velineon so that I can easily take off-the-shelf parts for the Spartan such as the prop and drive cog and use them with confidence on this motor. A mismatched motor/prop combination would not offer reliable performance and spending time trying to find a prop for some arbitrary outrunner would be too much effort for what it's worth.

Cost, size, and weight are really not an issue. However, the motor shaft should be able to accept the Spartan drive cog either alone or with a bushing.

Outrunners work nicely underwater after a dip in conformal coating, and the typical "plus sign" mounting bracket is great for mounting them to the PVC cap at the back end of my model. The model will use two motors side by side to cancel the torque reaction, and steering will be controlled by four independently steered rudders projecting radially out from the circular hull of the model. I'm currently in the process of sourcing some pneumatic swivel fittings that will allows the rudders to be turned from a servo inside hull without creating leakage.

Velineon 3500 Brushless Motor Specs:
10-turn, 540-size
Maximum rpm: 50,000
Diameter: 1.4 in (36 mm)
Length: 2.2 in (55 mm)
Weight: 9.2 oz (262 g)
Current ratings: 65A constant; 100A peak/burst
Ultra-high temperature, sintered Neodymium magnets
12 AWG wire with solder tabs
TRX 3.5 mm bullet connectors
Thanks for all the help,

I realize this is in the aircraft board, but I believed it would be the most effective place to post a thread of this nature.
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