Strings Wound

How can I make an easy mousetrap car?

I need to make and easy mousetrap car. Can you please help? Thank you so much!

There are lots of design instructions ont he web. A couple of key things to think of if you are in some sort of contest:

Keep the weight low
Use a high a drive ratio as possible
Use as long a lever arm as possible

My son made his by brazing a pice of coathanger onto the trap arm.

Better designs use very light, very large diameter wheels. I've seen excellent results using CD discs. Make sure you get a good axle and center it well.

Make sure the string winds and unwinds cleanly and without obstruction.

Astrobuf

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DAddario J60 5 String Banjo Strings Light Gauge Nickel Wound MADE IN USA
DAddario J60 5 String Banjo Strings Light Gauge Nickel Wound MADE IN USA
$5.95
Martin Vega Banjo 5 Strings Medium Nickel Wound set 010 023 V730 Bitterroot
Martin Vega Banjo 5 Strings Medium Nickel Wound set 010 023 V730 Bitterroot
$6.29
Musiclily Alice 10 Sets Stainless Steel  Copper Alloy Wound Banjo 4 String Set
Musiclily Alice 10 Sets Stainless Steel Copper Alloy Wound Banjo 4 String Set
$18.81
Darco D900 5 string banjo strings newold stocklight gaugenickel wound
Darco D900 5 string banjo strings newold stocklight gaugenickel wound
$5.25
New Martin Vega V700 Nickel Wound 5 String Light Banjo Strings + Free Shipping
New Martin Vega V700 Nickel Wound 5 String Light Banjo Strings + Free Shipping
$7.55
Musiclily Alice 2 Sets Stainless Steel  Copper Alloy Wound Banjo 5 String Set
Musiclily Alice 2 Sets Stainless Steel Copper Alloy Wound Banjo 5 String Set
$7.81
Musiclily Alice 2 Sets Stainless Steel  Copper Alloy Wound Banjo 4 String Set
Musiclily Alice 2 Sets Stainless Steel Copper Alloy Wound Banjo 4 String Set
$7.12
AQUILA Minstrel Banjo String Set 7B Wound 4th String
AQUILA Minstrel Banjo String Set 7B Wound 4th String
$11.88
SET OF 10 BANJO STRINGS 4TH LOOP END FALT WIRE WOUND No F 622 MIP
SET OF 10 BANJO STRINGS 4TH LOOP END FALT WIRE WOUND No F 622 MIP
$49.99
Jim Dunlop DBN4 Tenor Banjo String Set Nickel Wound 9 30 Strings
Jim Dunlop DBN4 Tenor Banjo String Set Nickel Wound 9 30 Strings
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Aquila 5 string Medium Gauge Classic Banjo String Set DBGDG Wound 4th Code 1B
Aquila 5 string Medium Gauge Classic Banjo String Set DBGDG Wound 4th Code 1B
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10 SETS MARTIN V730 VEGA BANJO STRINGS 5 STRING NICKEL WOUND MEDIUM GAUGE 10 23
10 SETS MARTIN V730 VEGA BANJO STRINGS 5 STRING NICKEL WOUND MEDIUM GAUGE 10 23
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Musiclily Alice 10 Sets Stainless Steel  Copper Alloy Wound Banjo 5 String Set
Musiclily Alice 10 Sets Stainless Steel Copper Alloy Wound Banjo 5 String Set
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