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Old 05-11-2004, 07:20 AM   #31
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I just use them on my Kr using a brush reshapper that i made.
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Old 05-11-2004, 07:21 AM   #32
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Nnick,

Here is the pic you asked for. It is the copper part of the amature that is twisted, not the armature..
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Old 05-16-2004, 12:04 AM   #33
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Blue - 5mm armature web, enduro brushes, off-road winds
Black - 4mm armature web, enduro brushes, touring winds
Green - 4 mm armature web, sprint brushes, off-road winds
Purple - 4mm armature web, Sprint brushes, touring winds

whats the difference betwn a 5mm or 4mm armature web?

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Old 05-16-2004, 05:56 AM   #34
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It's 1mm smaller in diameter so it spools up quicker for more torque or punch.

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Old 05-16-2004, 10:26 AM   #35
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The armature stack size can be determined by measuring the spalt size between the poles. For a 3.5mm stack this is ~3.2mm, for the 4mm stack ~3.7mm and for the 4.5mm stack ~4.2mm.

In general
- 3.5mm stack gives most rpm, lowest torque and least efficiency
- 4.0mm stack is a balance between the 3.5 and 4.5
- 4.5mm stack gives least rpm, most torque and most efficiency

A different way of looking at it:
To get same power and rpm as a 10 turn on a 3.5mm stack you need to choose a 9 turn on 4mm and 8 turn on 4.5mm stack.
Or, with a 12 turn example: a 14 turn 3.5mm will have same rpm/power as 13 turn on 4mm stack or 12 turn at 4.5mm stack.

Now, with 10/12 turn motor limits another problem comes in, this is wire lenght. The shorter, the better (less resistance = more power) and we sacrifice efficiency as the batteries are so good/less a problem to make runtime. So, we choose 3.5mm or 4mm stack for touring cars with motor limits.

Advice:
Buy for Touring cars always the V2 touring car version (black endbell) till 9 turns. Under 9 turns choose the modified version.
For all other applications like off road as well 1/12th the V2 modified version (blue endbell) is the best choice as it has most efficiency as well largest power band.

The choices of stacks (endbell colours) are proposed due to the difference in regulations worldwide. As only manufacturer we offer you the possibility to make the best choice for the ruling in your country and your application to have maximum performance in your conditions.

by:
Oscar Jansen
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Old 05-16-2004, 10:27 AM   #36
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Are there any shops in the UK that ship to the states so we can order some of the CS brushes??
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