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View Full Version : BODY, Hallock style windscreen, my fabricated version...


Drewfus
02-08-2004, 09:42 PM
When I was a teenager, the closest connection to ‘hot rodding’ for me was porning over various ‘Rod’ orientated magazines, dreaming of the day that I would be ‘zooming’ around the streets in my hopped up rod. I’ll openly admit that I really didn’t have a clue at that stage in time about anything (although some would say the same today  ), as my knowledge of history and reason didn’t exist, the only thing I would appreciate (i.e. actively remember..) was the photo’s of what I liked, and what I didn’t. One of the things which I did like were the photo’s of late 40’s/early 50’s speedsters and land speed racers.

In particular, one of the most notable features of the cars (dare I call them that…) which I lusted over was a particular style of windscreen, the ‘Hallock’ and ‘Duval’ style units.

Whilst there are differences between them, they both share the undeniable look of speed and action. This ‘look’ is something which, like stance/wheels/colour etc, give you a ‘first impression’ that will either attract people, or keep them walking through the isles of cars at shows.

I wanted a ‘hallock’ style screen, and since I believed an original unit ( or one of the ‘swap meet’ replica’s) were out of my reach, I decided that my only affordable option was to make one myself. I considered making a pattern and getting one cast, but the complications were far too overwhelming. I had almost given up on my dream, and then, here on our own HAMB, I saw ZIBO’s artistic fabricated unit.

This gave me a new hope, and so, in respect to him, the following is a tribute to him, since it is basically his idea.

To speed up proceedings, I’ll try to be brief, and let my dodgy photo’s tell the story…..
(please bear with me, approx. 10 photo’s…..)

The tools used:
1x Plasma cutter (although there are many other options)
1x Grinder (with ‘flapper disk’)
2x hand files (a coarse and fine unit)
1x ‘crap load’ of patience
1x welder
1x masking tape

Materials used:
3mm Alloy plate
10x10mm Alloy bar ‘spacers’
Balsa wood (in same sizes as above Alloy)

After doing some research, and identifying some crucial dimensions (like the angle the glass lays at, the overlap required to secure the glass, and some basic overall dimensions) I made a ‘mock-up’/pattern of the frame using the balsa wood, trimming and shaping to ‘replicate’ the traditional look which lusted after.

Drewfus
02-08-2004, 09:44 PM
Another...

kustumizer
02-08-2004, 09:45 PM
What kind of motor is in that?? Nate

Drewfus
02-08-2004, 09:45 PM
After creating the basic pattern for the ‘outer’ skin, I traced it onto the 3mm alloy plate, cut it out with the plasma (although that’s my friend in the photo, my bald spot isn’t as bad… http://www.jalopyjournal.com/ubbthreads/images/graemlins/wink.gif)

Drewfus
02-08-2004, 09:46 PM
Then file it all nice and smooth (remembering that you want a bit of ‘green’ as you will be trimming/shaping to match the top of the tank).

Drewfus
02-08-2004, 09:47 PM
The outer pattern, and the plate...

2tall2beahotrodder
02-08-2004, 09:48 PM
Nice flip flops.. Havnt you took Garage Safty? http://www.jalopyjournal.com/ubbthreads/images/graemlins/tongue.gif http://www.jalopyjournal.com/ubbthreads/images/graemlins/wink.gif http://www.jalopyjournal.com/ubbthreads/images/graemlins/crazy.gif

looks great. love that dash

Drewfus
02-08-2004, 09:49 PM
Be aware that you will need to trim the old fuel tank, and more importantly, you will need to cut off the top of the old windscreen frame mounts, weld on a plate for the new screen to mount to. One very important feature that you need to include is the provision (i.e. nut) welded to the underside of the mount as it is very awkward to hold a nut under there when fitting the screen http://www.jalopyjournal.com/ubbthreads/images/graemlins/grin.gif.

Drewfus
02-08-2004, 09:50 PM
Another view...

Drewfus
02-08-2004, 09:51 PM
Obviously you need to bend the plate at the centre and at the ends, and then make an inner pattern (so that you can sandwich the glass).
I spaced the two skins 10mm apart (the glass used will be 6mm thick; with a rubber packing used either side to fill the gap).

Drewfus
02-08-2004, 09:53 PM
After welding it all up, and doing a lot more filing/fitting/filing, the screen starts to take shape.
I made a pattern out of thick cardboard for the glass, trimming till I got the shape I desired.
Temporarily I’ve got some Perspex, although it will be replaced by laminated safety glass when it comes time for rego.

Anyhow, the following photos are of the car now. I still need to tidy up some of the welds, and give the basic surface finish some ‘quality’ time with some fine sandpaper to get a nice and uniform satin finish, but that can wait till I get ready to paint the car.

Note: I’ve mounted the screen to the mounts (i.e. 2 x ¼” holes in the tank at the leading edge, and 1x ¼” hole on the outer perimeter) using S.S. bolts and nylock nuts with spring washers all round. Also notice that I gusseted and braced the frame to give it some structural integrity, as the air pressure at speed will want to deform the frame substantially.

Also, whilst the comfort levels are small, I have made provision for a roof. The level of work required for one to fit easily has been sacrificed as I wasn’t prepared to compromise ‘the look’ of the slightly curved top edge of the glass, none the less, it will still have a roof of sorts, eventually.

Drewfus
02-08-2004, 09:54 PM
no...7 (please bear with me....)

Drewfus
02-08-2004, 09:56 PM
2nd last... http://www.jalopyjournal.com/ubbthreads/images/graemlins/grin.gif

Drewfus
02-08-2004, 09:58 PM
I apologize if I’ve dribbled more than necessary, but at the end of the day, the total cost of materials is under $70, with the biggest investment being planning time, and ‘quality time’ in the shed.

If you have an idea, but it all seems to hard, don’t give up, just try to think outside the square.

Cheers,

Drewfus (So-What Speed Shop Australian ‘Out-house’)

Mai Ki-Ki
02-08-2004, 10:04 PM
Damn thats looking great Drewfus!
Whats the ETA of the finished product? http://www.jalopyjournal.com/ubbthreads/images/graemlins/grin.gif

HEHE

Cheers
MAIKI

Sam F.
02-08-2004, 10:12 PM
awesome,,really AWESOME!

lulabelle
02-08-2004, 10:30 PM
Looks really good.I plan on doing the same trick soon.

choprods
02-08-2004, 10:33 PM
Very simple but ULTRA effective!I like the end result- Thanks for the GREAT Tech on this much desired subject.

the-rodster
02-08-2004, 10:50 PM
Really nice piece of fabrication. You could have won tech week a few weeks ago with this post.

34Fordtk
02-08-2004, 11:06 PM
Hell its almost Monday how bout this being the first post of a new Tech Week?? You made a hard sounding job look real easy.....you have my vote http://www.jalopyjournal.com/ubbthreads/images/graemlins/grin.gif

PEDDRO
02-08-2004, 11:09 PM
'Bout bloody time!!!!!!!!
http://www.jalopyjournal.com/ubbthreads/images/graemlins/grin.gif

[ QUOTE ]
Nice flip flops.. Havnt you took Garage Safty?

[/ QUOTE ] Haven't you taken English lessons?

And they're THONGS mate, not flip-flops! http://www.jalopyjournal.com/ubbthreads/images/graemlins/wink.gif

burtrido
02-09-2004, 03:10 AM
That is looking fantastic. Keep it up!!
Thongs are Safety boots over here. Are they double pluggers?

Tim
02-09-2004, 03:26 AM
nissian inline, truck or 240 ish?

always wanted to do that, might some day yet

looks good

SlowLearner
02-09-2004, 08:17 AM
Great Tech. Great inspiration. Thanks!
(tech-o-matic)

Rocky
02-09-2004, 08:37 AM
Will you polish the aluminum or paint it? Did you do your own welding?...tig, mig or torch??? Very nice tech post.

lowsquire
02-09-2004, 08:57 AM
looking great bro. shit I forgot all about the tracing of the shell I was going to do! Ill knock it up tommorow ....really sorry.

Drewfus
02-09-2004, 06:18 PM
Gotta be brief due to restrictions here at work...

Engine: Will be replaced soon, but for those still interested, Toyota 18RGE 4 cyl (with a 'crossflow', dual cam, Alloy Yamaha head)

Maiki: The Picnic....

Rocky: the alloy will have a 'brushed' satin finish (ie not polished), it will be neat, but not 'show' quality.

Was tig welded (by my welding teacher) using a high frequency unit. It took more time to clamp in place than it did to weld.

Better run. Thanks for the compliments, much appreciated.

Cheers,

Drewfus http://www.jalopyjournal.com/ubbthreads/images/graemlins/grin.gif

30roadster
02-09-2004, 07:26 PM
!TECHOMATIC!

2raticl
02-09-2004, 08:04 PM
That is some nice work. Being broke can bring out the creativity. Keep everyone posted as it gets farther along.