RCScrapyard ► Tamiya Ferrari-F40. ITEM #58356 Group-C Chassis. 1/10 Scale Le Mans Touring Car For Sale in The USA.

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Tamiya Ferrari F40 - #58356

1/10 Scale Electric Touring Car - Group-C Chassis:

  Originally released by Tamiya in September 1991 (#58098) the Ferrari F40 was re-released in 2005 in a "Finished Body" version of the car driven by Jean Alesi in the IMSA GT one hour race in 1989, finishing third.
  The chassis for this car was a short wheelbase version of the one used for the Mercedes Benz C11 (#58088) designated the "Group-C" chassis.
  The configuration of the "Group-C" chassis was similar in a number of ways to the F101, not least in that it employed a ball differential in place of the older Orbital Gear type. This, combined with its low centre of gravity, gave the car improved stability when cornering and smoother, controlled acceleration out of the corner.
  The success of the pan car style design of the "Group-C" chassis was mainly down its relatively simple construction, low price and handling abilities. This was the twelfth RC model, made by Tamiya, to use the "Group-C" chassis, so parts and spares should not be too difficult to find.
      Rating: 44 Stars out of 5 Reviewed by: RCScrapyard     Manual.


★ Tamiya Ferrari F40 - Group-C ★
Tamiya Ferrari-F40 - #58356














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Tamiya #58356: For Sale in the USA

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Tamiya Ferrari F40 #58356 Group-C - Chassis
Tamiya Ferrari F40 #58356 Group-C Chassis
Tamiya Ferrari F40 #58356 Group-C - Body Shell
Tamiya Ferrari F40 #58356 Group-C Body Shell

Ball Differentials


   Ball differentials were developed in the late 1980s to replace the high friction Gear differentials. Mainly used on Tamiya Touring Cars, Le-Mans and Formula One Cars, Ball Differentials are designed to be totally frictionless and smooth in action to provide effortless drive to the wheels on cornering, where the inside wheels must rotate slower than the outside wheels for controlled stability.

   Basically, the configuration of the Ball Differential is a number of small case hardened steel balls, spaced in a plastic cage that is in effect the drive gear for the axle. On each side of the gear are two hardened and tempered pressure plates that clamp over the steel balls, held in position by a screw through the centre of the assembly, incorporating a small thrust bearing and coil spring. The adjustment of this screw is crucial to the effectiveness of the differentials action. Too tight and the free movement of the diff is restricted. Too loose and the balls will slip on the plates when accelerating out of the corner, not only reducing drive, but damaging the balls and pressure plates not good. The optimum setting is obviously somewhere in between, and is where the small coil spring is important. It must be compressed, but not fully, to provide the desired exact pressure required. With a little practise setting up the diff become second nature. Patience is the word for this procedure.

   Lubrication of Ball Differentials is essential for that smooth operation, and special greases have been developed that allow the balls to roll freely in the cage, and push aside as they roll over the pressure plates.

For More Setup Information check out my Hints and Tips page.



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Hints and Tips

Weight

   If you ever step up and enter a regional, national or international event in RC, you will find one specific rule concerning the weight of your car.

   At the time this article was written, the Minimum weight restrictions for 1:10 electric Touring Cars at different events, was between 1350g and 1500g. This includes your Motor, ESC, Receiver, Battery, Body Shell and the transponder.

   Out of the box you will find the majority of 1:10 Touring Cars, with everything onboard, are way over this Minimum weight, and unless you are good enough to attract sponsors, getting your car down to anything approaching that minimum weight will be very expensive.

   There are things you can buy like micro ESC, and Receivers. But Batteries and Motors are what they are, and you have to work around them.

   To reduce the weight of your chassis, there are a number of things you can do. If the car you have is generally considered competitive enough, there are often carbon fibre main chassis, shock mounts and other alternative parts available, but they are expensive. And when the new version of your model comes out all the money you have spent is lost.

   The most cost effective weight reduction is the metal parts of your chassis. UJs, Drive and Pivot shafts and the like tend to vary from model to model, but turnbuckles can often be transferred, and lengthened or shortened by using plastic ball connectors, so titanium is a consideration.

   Screw sets can also be transferred from car to car. Titanium screws and wheel nuts are always available, but there is a cheaper alternative Aluminium screws and nuts can reduce your cars weight cheaply, but be careful not to over-tighten them, aluminium is not as strong as titanium, and can easily shear off if you are over zealous.

   Another weight reduction option is to drill holes along the base of the chassis. However, I do not recommend this. For one thing you are reducing the strength and making the chassis less rigid, but you are also raising the centre of gravity of your car, which can affect stability.

   If you do manage to get your car weight below the minimum allowed, this will give you an opportunity to add weight where you want it, and lower the cars centre of gravity.

   One last tip: Knitting needles. When I first started in RC, money was tight and my dad came up with all kinds of ideas to reduce weight. He obtained a 3mm dye and found some of my mums old aluminium knitting needles that were just the right diameter. Having determined the length of the turnbuckles needed for my setup, he cut them to those lengths and threaded each end, so he could put plastic ball sockets on them. Adjusting them was a bit of a pain, and they could be a bit fragile in crash situations, but they saved us lots of money over those early years.

For More Setup Information check out my Hints and Tips page.






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