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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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
Martin Vega Banjo Strings Two Packs Light V700 Medium V730 Nickel Wound
Martin Vega Banjo Strings Two Packs Light V700 Medium V730 Nickel Wound
$10.00
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
$7.95
Martin  Co V730 Banjo Nickel Wound String Set Medium Gauge 10 23 Strings
Martin Co V730 Banjo Nickel Wound String Set Medium Gauge 10 23 Strings
$18.00
Martin Vega Banjo 5 Strings Light Nickel Wound set 009 020 V700
Martin Vega Banjo 5 Strings Light Nickel Wound set 009 020 V700
$7.19
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
$6.95
Martin  Co V730 Banjo Nickel Wound String Set Medium Gauge 10 23 Strings
Martin Co V730 Banjo Nickel Wound String Set Medium Gauge 10 23 Strings
$6.57
DAddario Banjo string set 5 strings Made in USA J60 Nickel Wound Light Gauge
DAddario Banjo string set 5 strings Made in USA J60 Nickel Wound Light Gauge
$7.00
Darco D900 5 string banjo strings newold stocklight gaugenickel wound
Darco D900 5 string banjo strings newold stocklight gaugenickel wound
$5.25
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
$8.77
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
$7.34
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
$18.91
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
$8.02
Black Diamond N730L Bluegrass Light Banjo Strings Nickel wound 10 22
Black Diamond N730L Bluegrass Light Banjo Strings Nickel wound 10 22
$10.65
4 STRING BANJO strings light set copper wound new strings
4 STRING BANJO strings light set copper wound new strings
$7.66
Martin Vega Banjo 4 Strings Tenor Nickel Wound set 009 030 V720
Martin Vega Banjo 4 Strings Tenor Nickel Wound set 009 030 V720
$4.79
Gibson Vintage Reissue Pure nickel Wound 11 50 Medium light
Gibson Vintage Reissue Pure nickel Wound 11 50 Medium light
$12.50
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
$22.29
New Martin Vega Banjo Strings Nickel Wound Medium 01 023 V730
New Martin Vega Banjo Strings Nickel Wound Medium 01 023 V730
$5.95
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


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