Duesenberg Straight 4, quarter scale

[peterl95124]

its the little things that take so much time...
here are the distributor and oil pump, still works in progress
(and there's a water pump part currently clamped to my mill,
which is taking up lots of mental energy to design)

 

[roncohudd]

its the little things that take so much time...
here are the distributor and oil pump, still works in progress
(and there's a water pump part currently clamped to my mill,
which is taking up lots of mental energy to design)

 

[peterl95124]

a small amount of progress on the water pump (have mostly been working on other projects)
some (fun for me!) rotary table work was involved, plus lots of filing afterwards

 

[peterl95124]

some machining operations on the rotary table for the water pump scroll
first is approximating the scroll height as a staircase
second is using a 45-degree end mill to approximate the tubular roundness of the scroll

 

[peterl95124]

speaking of "small parts", I recently ground the pair of cam shafts

(am very pleased with the results I got switching to a CBN wheel
but not sure how to dress the wheel once that is needed)

 

[peterl95124]

perfection is the enemy of git-er-done, this doesn't look great, but will be functional and well hidden inside the water pump
mostly machined on a tilting rotary indexer, with a little bit of dremel work afterward
the entry and exit blade angles are wrong for a water pump, but won't make much difference for an engine that only gets run for short periods of time for demonstrations (a similar water pump on my Merlin V-12 blew a plastic hose off its fitting, so "good enough for government work" !)

 

[peterl95124]

water pump housing needs inlet pipe
if you have a mill vise you're at the start of a long journey of collecting necessary clamping fixtures and devices !!!