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12/18/2011 3:18 pm  #1


Hard Tail No Wheely Bar Dragster.....

Here is my work in progress for making a fast hardtail no bars rail.  Made from a brass back half and a retro tongue piece.  .080 wire.  Motor is a VR 20.  Geared 18/50 and finally found some tires that would hook.  Car weights in at 128 grams.  Body is a hard body provided by merle at wizard raceway.  I have test at my home track that has no capacitors and only 3 taps in the entire track so cars nose over hard at the top end.  Given that here are the numbers so far:

Pass 1  .880
Pass 2  .875
Pass 3  Clean the track .862
Pass 4  .843
Pass 5  .855

Going to make some minor changes but it should go .7's at a fully powered track!

http://i882.photobucket.com/albums/ac28/stretchr/IMG_5061.jpg


http://i882.photobucket.com/albums/ac28/stretchr/IMG_5062.jpg

 

12/18/2011 4:43 pm  #2


Re: Hard Tail No Wheely Bar Dragster.....

     Thread Starter
 

1/02/2012 7:57 am  #3


Re: Hard Tail No Wheely Bar Dragster.....

Just ran this pile at downriver.  here is what it did:

run1:  840
run2:  832
run3:  817
run4:  830
run5:  832
run6:  828

     Thread Starter
 

1/02/2012 5:06 pm  #4


Re: Hard Tail No Wheely Bar Dragster.....

Be in the 7's before you know it.

 

1/02/2012 6:50 pm  #5


Re: Hard Tail No Wheely Bar Dragster.....

at tr i bet it goes in the 7's!

     Thread Starter
 

1/07/2012 9:04 pm  #6


Re: Hard Tail No Wheely Bar Dragster.....

did you have to add weight in the nose and if you did, how much?


"The Dude abides."
 

1/08/2012 12:23 am  #7


Re: Hard Tail No Wheely Bar Dragster.....

The dragster weights a total of 130 grams.  I have the weight spread out for nose to motor.

     Thread Starter
 

2/16/2012 4:38 pm  #8


Re: Hard Tail No Wheely Bar Dragster.....

Here is what this ride now looks like!

http://i882.photobucket.com/albums/ac28/stretchr/IMG_5284.jpg

     Thread Starter
 

2/16/2012 7:09 pm  #9


Re: Hard Tail No Wheely Bar Dragster.....

Looking good there, Joe

 

2/16/2012 7:49 pm  #10


Re: Hard Tail No Wheely Bar Dragster.....

Thanks I actually did it myself in about an hour!

     Thread Starter
 

2/16/2012 9:19 pm  #11


Re: Hard Tail No Wheely Bar Dragster.....

Nice ride.  Impressive numbers with no bars.


New doesn't always mean good.
 

2/20/2012 6:56 pm  #12


Re: Hard Tail No Wheely Bar Dragster.....

NEW RECORD FOR THIS RAIL.  At the US NATS it ran .790 then blew the motor up!  So in goes a new VR 20 with ball bearings and shunt wires!

     Thread Starter
 

2/21/2012 7:20 am  #13


Re: Hard Tail No Wheely Bar Dragster.....

.760 here you go!

Nice


New doesn't always mean good.
 

2/21/2012 4:58 pm  #14


Re: Hard Tail No Wheely Bar Dragster.....

From your lips to the car!

     Thread Starter
 

2/22/2012 10:26 am  #15


Re: Hard Tail No Wheely Bar Dragster.....

Hi Joe
what size are those tires that 20 is working very well with that gearing
Royz


Just enjoying Life and Slots
 

2/22/2012 1:37 pm  #16


Re: Hard Tail No Wheely Bar Dragster.....

1 1/16 by 400.  These were cut down from 500 which is key to get the grip!  Thinking of dropping the gearing down to 16/50  This is the gearing i had it at but I had different tires so we shall see!

     Thread Starter
 

2/22/2012 4:21 pm  #17


Re: Hard Tail No Wheely Bar Dragster.....

Thats very cool
our top fuels have to have .700"tires  and weight is 150g so i think they will be slower but I think mid 8s should be doable
Royz


Just enjoying Life and Slots
 

2/22/2012 5:47 pm  #18


Re: Hard Tail No Wheely Bar Dragster.....

mine weights 128

     Thread Starter
 

2/26/2012 6:50 pm  #19


Re: Hard Tail No Wheely Bar Dragster.....

Just ran the rail at my local track which runs about 80 slower than anywhere else and first hit it ran .850!!!!!!!!  that puts me at .770 at a place like tr!!!!!  Damn these motors are quick!

     Thread Starter
 

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