Alternative to big motor and big $$$?

[trebuchet03]

Here's your solution



So this guy - Thomas Knight - makes electric turbos (technically superchargers for the anal). Instead of using one giant motor, which would take up too much space and wouldn't provide the power curve he wanted... He ganged smaller motors in parallel and apparently had a working prototype...

Here's an Article on it...

Perhaps something like this is a suitable solution to combine motors.... Belts will likely just eat **** in short order...

[WaxyChicken]

Nope, way over my head.

but...

:: Parallel Motors
When parallel motors are connected to a drive the extra capacitance of the parallel motors compared to a single motor of the same combined power can cause problems. Allow 10 - 15% extra for drive sizing. In addition, the capacitance effect can be reduced if the motor cabling is "daisy chained" (i.e., connected from the drive to motor 1, then motor 1 to motor 2, etc.) rather than each motor being connected directly to the drive output. In extreme cases, the use of output filters is advisable.

source=http://www.anaconsystems.com/text/tips.html

if i understand correctly, this means the
chop top Metro does not have the best drivetran system.
a more accurate one would be:

[WaxyChicken]

You've said Fan Motors would be too weak, how about Starter Motors?
They have a thinner body which would allow more in an alignment and they are powerful enough to crank an engine.

[Twilly]

Originally Posted by WaxyChicken

You've said Fan Motors would be too weak, how about Starter Motors?
They have a thinner body which would allow more in an alignment and they are powerful enough to crank an engine.

Starter motors are made for short term use... You would burn them up in no time...

[dremd]

Starter motors *could* be a better alternative to fan motors in my opinion.
I had my TDI starter apart yesterday (clean and lube to shut it up) and it is a sturdy little motor, however no cooling at all, I don't know why you couldn't cut some holes in each end and put a fan on the drive shaft to keep things under control. I don't know how efficient they would be . . . . or life span when cooled . . . . Just thought I'd throw that out there.

Also Floor polisher motors, or make friends with someone at a fork lift place?

Keep an eye on craigslist, Flea bay.

[WaxyChicken]

Originally Posted by dremd

Keep an eye on craigslist, Flea bay.

I already am.
....ecomodder.com/showthread.php?t=782

[Ryland]

How a starter motor is constructed is going to have as much of an affect on the cooling then simply the lack of holes.
Starter are powerful little motors, they might draw 100 to 500 amps for a second or two (1-6 hp), and because of that are designed with heavy soft copper/lead brushes insted of carbon, bronze bushings insted of ball bearings or roller bearings, and heavy solid resin around the windings to keep them from moving, the motor in my citicar is 3.5hp and is the size of a healthy water melon.

go with a motor designed for contuinued use.