Hi JOHN Great stuff, I am going for the HL-230 kit. To ease the making of moulds, I would prefer a small mark for the bolts heads, and when putting things together I would like to add brass bolts. That is how I will do it anyway,because the bolts will be better when added rather than moulded. Anyway I will love to have one HL 230. Keep on with the good work Regards Ragnar
Hello Ragnar, It is more economic for me to mold the bolt heads onto the components. The molded in bolt heads can be removed easily via a sharp xacto knife, which in turn will leave the indentation for the metal replacement.
I have completed the molds for the crank case, lower engine plate and the carburetors. Currently I'm finishing up the rocker arm covers and I will soon be on the air cleaning system. Once the masters are ready I'll make the molds and cast up a sample set.
It has been a while since my last post, but I have been working on lots of small engine bits and masters. Currently I completed the engine's rocker arm covers. There are many more smaller parts that are currently in molding. Once ready they will be added to the engine.
The rocker arm cover castings are going to be used on both the 210 and the 230, but there will be different components to add on to the covers that will make them different
Currently I have the rocker arm parts for the 230 complete and the 210 parts are currently in molding.
with the next update I will have more parts complete that once added will distinguished the two engines from HL 210 to HL 230. More to come.
One of the key differences the HL210 has from the HL 230 is in the arrangement of the top engine details. The HL 210 has it's magnetos mounted to the top of the rocker arm covers on two long arms. On the other side of the arm are two air intake stacks. On the HL 230 the magnetos are mounted to the fan drive gear box which is located on the center portion of the engine.
The HL 210's air cleaner manifold system is also different from the 230. On the 210 all four carburetors are connected to one large air duct. On the top of the duct three smaller air filter canisters are mounted. On the 230 the single air duct and three canister system is replaced by two smaller ducts and two larger air filter canisters.
To power the tank's cooling fan / radiator system a gear box emerges from the rear of the engine. On the end of the gear box housing is a out put wheel which wold be bolted to a drive shaft, that would power a small transmission that would spin the cooling fans when installed in the tank. On the 230 the gear box set up was altered in that rather than having there be one out put shaft that emerges from the center. Two out put shafts would emerge from the gear box sides. Each of these two output shafts would then be connected to dive shafts and each would power a transmission that would power the cooling system.
Both engines share the same magneto, and exhausts manifold system. I'm currently working on the 230 air intake system, and gear box/magneto cluster. Once complete I can move downward to the exhausts, starter and oil tank. More to come!
The Magnetos are complete, and are used on both engines.
The magnetos were added to both engines. On the 210 the magnetoes are mounted to the magneto arms, and on the 230 they are mounted side by side on the fan drive gear box.
Unlike the HL 210 which has a single drive shaft to power the fans the HL 230 uses two drive shafts, one for each side. Because of the new fan gear box the air cleaners on the HL 230 use a different arrangement (2 large air filters,as opposed to three smaller ones on the 210) .
With these batch of parts you can now see the differences between the HL 210 and HL 230.
Currently I'm working on the exhausts and the other lower side engine details (Oil tank, engine starter, water condenser...etc) Once complete the engines will mostly be complete! More to come.
Thanks guys, the engine kits are now about 75% complete
Once I have a few more parts, I will be releasing a "half" engine that is designed to have all of the top details so it fills in the engine bay.This set will be intended for RC tanks that have electronics and machinery in the rear portion of the hull, or for builders who don't need a whole engine but would like detailed engine insert. This set will also be much cheaper than the whole complete engine.
I completed the tank's exhausts manifolds and fuel sediment separators.
The exhausts are molded with their heat shields installed.
The engine's oil tank was also mounted
Like many engines of the period the Mybach engines had sediment filters in the fuel lines. The way these worked was the fuel would flow into the separator from the fuel tank. If there were any rust, or other heavy fragments they would settle on the bottom of the glass jars and would not flow into the engine and possibly clog the fuel system.
On the engine kits the glass jars are casted in clear resin to further enhance the look of the engine. The fuel lines are going to be added once the engine is painted. These lines will also come with the kits.
Another difference between the HL 230 and the HL 210 is the number of fuel separators. The earlier HL 210 utilized 4 separators, and the HL 230 utilized two separators.
HL210 (*note the last two separators will be added later)
Next I will have most of the side engine wall detailing complete including the starter, alternator, and cooling coil. More progress to follow.
On the engine's top portion the fuel primer pump, and cooling intakes were mounted. The cooling intakes differ between the two engines. Because of the 230's fan drive shaft design the air intakes need to bend and snake around the shaft locations.
On the engine's rear the engine stand, flywheel and starter mounting bar was mounted. The starter bar equipment locations differ on the two engines. On the 210 the manual starter clutch receptacle was mounted directly to the flywheel. This was changed on the 230 where the clutch was mounted below the flywheel.
The manual starter drive shaft was fitted and runs through the oil tank as per the real vehicle.
Finally On the engine's front the main cover, drive shaft spindle and drive shaft were mounted. One special feature that I built into the engine is that the drive shaft is full function. By turning the drive shaft the spindle and rear flywheel spin.
Both engines are now being painted and finished Once ready I will post pics.
I completed the paint work, and all of the plumbing . control rod work on the engines fully completing them. Also of note the unassembled kits also come with all of the plumbing and control rod components.