Ferrari Testarossa 250 1958 MG Plus Models 1:12

Hi Guys,

After my Pocher F40 project I will start with another Ferrari.

1: A picture of the ready model ( with thanks to morriaan1)

2: some parts of the MG Plus Model

3: The doors and trunk wil be replaced by a brass version

4: The aft part gets a tabular chassis including tank and spare wheel

5&6: drawing of the chassis

Do you guys like to follow the build or shall I come back with the end result
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After hours search with google and using all kinds of different search strings I all of a sudden found large pics of the chassis of the 250 TR. Thses cutaways are a nightmare indeed: to many details that coverup other details.

 

Ok I show you guys the progress of the build

 

Here is another progress update. I made a brass tubing frame instead of a plastic one. Plastic is easier to work with but brass is stronger.

I made a brass bulkhead for an easy connection of the tubing and I use the aft resin part as a mould for the right measurements and my soldering work. I started all over because the initial tubing I used was to thick and the connection was crappy.
In my second attempt I made a connection point of slightly thinner tubing. The frame tubing could slide over this small piece (see the hazy picture) and makes the aligning much more easy. Next step is more tubing for reinforcement and making and aligning the axle.

regards

Ton
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Here is my next update. I stopped the work on the "hump" ( waiting for coppersmith tools etc.) and started the building of the V12 2953cc Colombo engine.

The next pictures show the parts, detailing, the venturi´s added to the Weber carburettors and the casted bolts are replaced by pin heads. Also you the parts I modified and added and atlast the picture of the ready engine.

But unfortunately I uploaded to much pictures of the Ferrari F40 so I exceed my quota. I can only show you the links

































I hope to show you next time some coppersmithing

 

Thanks Joe!

 

Bedankt "Rijk"

 

After the engine the work on the "hump" had to start. A rather important job for me...considering I have never done it and some other projects were dependant of the success of my coppersmith skills. Among them is making in copper of the upper part of the 1:8 ARNO IX hydroplane with ferrari Engine



I started with a piece of copper (no brass because copper is more flexible)



I quit after two attempts and started working with 2 half pieces of copper. After bending, shaping and coppersmithing I could solder both parts together



and with coppersmith tools I shaped in its definitive form



I was satisfied with this try out and confident in my coppersmith skills so I put the cutter in the resin.





It wasn´t a sharp cut so I used a copper frame, screws and milliput (epoxy putty)





after sanding etc. the trunk hole was ready



here some fitting of the hump







next step is finishing the trunk

Ton

 

The lid of the trunk/boot is ready now. A book from 1893 and the books of Gerald Wingrove ( http://web.mac.com/gawingrove/iWeb/Home%20Page/Home%20Page%20.html) helped me a lot with the coppersmithing .



First the copper (brass is to hard) is annealed so it becomes softer. The first shape I have done with my fingers. Than I put some "wrinkles" in the copper where a curve should come. With a small hammer the "wrinkles" are hammered out and this is repeated a several times with this result



Here two parts are ready for soldering





The lid is made out of brass



And here you see old and new side by side



The small lid in the hump will added later

 

It is definitely worth all the work...and it is a challenging job!

 

This is a rather time consuming project. Compared to the F40 project I now have to design and create every added part myself.

Last 2 weeks I have been busy with remodelling the tubular chassis and the chairs. On the picture you can see the (drawn) parts which I removed or modified.



On the picture you see leather and foam which I planned to use for upholstery. But it looked awful, to much curves.
So it was time for plan B: the paint and brush



After giving it a first coat it looked much than the leather



However the "leather" is too glossy, so it is matted and piping is added.



The chairs are ready and I am quite satisfied with the result

The last picture show the aft part after demolishing the old tubular chassis and with the axle added. Now the resin is removed and I gave to model the differential


I removed the old chassis because it was to wide and the wheels hardly fitted

regards

Ton

 

Thanks latsyrc!

A little progress again ...this is a very slow project :cry:

This week I made the differential and removed the resin aft.
The problem with the differential is that there is no decent reference material. The only pictures I found are these: the lowest is a picture of the real car, upper right is an earlier model and left is the Hiro model.



This is the base form of the diff. It will be divided so that I can put it on the brass axle.



ready for assembly



Here you can see the model where the resin has been cut away and the assembled diff



I made a dry fit with the wheels



you van see that there is little room to mount the suspension so there is something to think about :-?
It will be my next challenge and also finishing the tubular chassis and mounting the gas tank

Ton

 

This is where we stopped last time. Here you can see the differential with wheels on the axle.



There is little space for the springs between the wheels and the chassis..and this is the way it is solved.



The springs are mounted on the inside now (without consent of Enzo 8) )
The springs won´t keep the axle in place so we need some kind of device (really don´t know the name)







Here all the parts are in place in a dryfit



This the start of the gas tank. Base form is made out of balsa



Here it is covered with aluminium



........and waiting for rivets. I ordered rivets which were to small (head .4 mm)



Here you see the chassis for the interior



Here it is placed. Also I installed the cover which is situated between the seat and the frame



Next step in finishing the gas tank and the steering systeem. I don´t yet if I will make in steerable.

Ton