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Old 10-14-2008, 10:58 PM
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Building a half size high boy rod for my kid

Hi!

I need some help where to start.
I have always been dreaming of a old school bonneville highboy hot rod, but I can't afford building this because of the tax system in Norway where I live..

SO I need help to where to start building a 1/2 size hot rod for my son instead!
Hi is 6 years now, so it's time he got his hands dirty and have some real to drive

This is my dreams:


Ok, so where to start?
I'm guessing I need some autocad drawings (or something) of chassis so that I can start manufacture that one.. Any ideas where to find this?

(the engine setup would be from a 8hp garden tractor if anyone wonder)
Best regards
Tormod
From Norway

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Old 10-15-2008, 07:52 AM
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Great project...and the old school Bonneville look is just classic.

Almost every rodder would probably tackle this build in a different way. I'm just offering up how I would approach it.

Assuming you have some modest welding skills I would build with all steel. You could use lighter weight, thinner walled tubing, flat stock and sheet metal than shown in these journals, but the building technique would be the same.

Personally, I wouldn't bother with the cad drawings or massive frame plans. A basic T-bucket type ladder frame (smaller scale of course) will be plenty stout. And I would draw the frame plan based on the body you select.

To get the body drawing to the correct relative proportions, I use common 1/25th scale plastic kits that you can get at almost any hobby shop or Wal Mart type store. I don't even try to make everything an exact reproduction. I just go for an overall look to match the style I am after.

Here, for example, is the rather crude sketch I did for building my roadster. It was hand drawn and then scanned into photoshop. By fooling around with the size in photoshop I was then able to print it out onto graph paper so I could lay the drawing out on a 4x8 sheet of plywood.



Here is another example of the process using my sedan delivery. Here you can see the drawing has progressed to show the basic "skeleton" of square tubing on which the sheet metal will be hung. It has also been printed out to scale on graph paper.



And here you can see the drawing transfered to it's full size drawing on plywood by copying the lines from the graph paper onto the wood...but scaling them up to match whatever size you want the car to be.



Based on these drawings I then fabricate a simple frame to fit the drawing and the suspension components.



Bend, shape and weld square tubing to match the skeleton I drew onto the plywood.



Hang the sheet metal.



And here is the final result for the roadster.



And here is where I am at with the sedan delivery.



Obviously there are many more details involved in the building process. Take a look at my two journals here and here. And if those don't answer any questions that might pop up, feel free to PM me and I'll try to provide you with any additional specifics you might need.

Like I say, there are other ways you can do it and other folks here on HR.Com may have some better ideas to share with you. But this is one way you could go at your build.

Hope your son enjoys the experience.
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Old 10-15-2008, 08:57 AM
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Spirit has a half size T Bucket body.

http://shop.spiritcars.com/images/uploads/mini%20T.JPG

We are in the process of build some frames for them.

http://shop.spiritcars.com/index.php
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Old 10-15-2008, 11:10 AM
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Quote:
Originally Posted by RPM
Spirit has a half size T Bucket body.
Hey RPM, aren't there some half size model A fiberglass bodies available as well? I've seen these now and then but don't know of a source.
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Old 10-15-2008, 01:25 PM
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Quote:
Originally Posted by cboy
Hey RPM, aren't there some half size model A fiberglass bodies available as well? I've seen these now and then but don't know of a source.

You could be right. All I do pretty much is T Buckets.
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Old 10-15-2008, 05:20 PM
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A guy on HAMB made his own 32 frame by using the Wescott PDF chassis blueprint. He claims to have somehow enlarged it and made many copies of each foot of the frame, then pasted them together.

I had that website file bookmarked but it is now gone from the web? Anyone know of another?

I don't know where to get a print of an A body shell.
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Old 10-15-2008, 05:58 PM
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1/2 size highboy

FWIW. Around here, kart racing is big time competitive. A 5 or 10 year old kart sells for next to nothing. It's a cheap way to get spindles, steering (with ackerman even), axels, clutches, disc brakes, hydraulic systems, etc. that are very servicable, just not competitive in the race world.
You may even be able to use the frame as a starting point.
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Old 10-16-2008, 08:46 AM
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Thank you!
Here was a lot of good information!

I'm thinking of using gocart/crosscart/atv parts on this build.
I'm gueissing I can get most of the parts needed from them..?

The reason asking for drawings on the frame is that I have never seen this kind of frames live.
So I have no idea where to start.

I don't think this build never will be a 1/2 size replica, but I would like it to be as near as possible. I have been in love with this kind of rod as long as I remember.. So

I'm thinking of building the chassis in aluminum so it's light. The body I'm thinking of fiberglass om a aluminum frame.

I'll read the journals and see if I will be any wiser!


Great builds you all have!!

Again, THANK YOU!
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Old 10-16-2008, 10:22 AM
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a very popular short track racing series here is called: "Legends" or "Bandelero"

they are a "complete" 5/8th scale car,,,,everything from the frame/steering!!/suspension!!/brakes!!/etc/etc parts done on a 5/8th scale....

I don't know if the series has reached across the pond, if there is a (parts) dealer in europe???

here's a link just to illustrate what they are about:
http://www.littleracecars.com/about_legends.shtml

my $.02
determine all the drivetrain parts first, design and build the frame to work with those parts...
(scaled down "working parts" will be the big challenge)
my opinion,,,, only 6 years old (!!!!) is to soon for such a huge challenging project....
(LOL,,,who wants this toy more, "dad" or the son?)
do something more simple for a first father-son project????
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Old 10-16-2008, 10:34 AM
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Quote:
Originally Posted by red65mustang
a very popular short track racing series here is called: "Legends" or "Bandelero"

they are a "complete" 5/8th scale car,,,,everything from the frame/steering!!/suspension!!/brakes!!/etc/etc parts done on a 5/8th scale....

I don't know if the series has reached across the pond, if there is a (parts) dealer in europe???
No, that's new to me! But I'm not new in getting parts from "over there" so that's interesting!

Quote:
Originally Posted by red65mustang
(LOL,,,who wants this toy more, "dad" or the son?)
That's a simple question.. the DAD!

But then again my son has been driving a ATV from age 3 and have been playing in the garage when I'm been playing with my cars even earlier

I'm guessing I'll do the building and he the driving, something tells me that he is liking that..
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Old 10-16-2008, 11:02 AM
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Here is a link to frame dimensions and drawings you could scale down:

http://www.wescottsauto.com/WebCatalog/FR-3.pdf

You could also look around the Wescott site for other frame drawings for different bodies.
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Old 10-16-2008, 11:09 AM
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Quote:
Originally Posted by home brew
Here is a link to frame dimensions and drawings you could scale down:

http://www.wescottsauto.com/WebCatalog/FR-3.pdf

You could also look around the Wescott site for other frame drawings for different bodies.
Perfect!

Thanks!
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Old 10-16-2008, 08:44 PM
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Give these a look
Shane
http://store.600racing.com/site/depa...0941EAFE628631

http://www.speedwaymotors.com/p/1524...ml?itemNo=body

http://www.speedwaymotors.com/p/8028...ml?itemNo=body
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