The stock renesis oil filter pedestal is very tall. Tracy Crook
used a
3rd-generation (FD) pedestal on his Renesis. I found that the
intake/output holes don't align exactly -- so he probably honed
out the
block before the engine was assembled. This is hard to do once the
engine is built. Also, the other generations of oil filter pedestals
won't fit (only the FD and Renesis have the ancillary oil line
takeoff).
It may be easier to just mount the filter remotely. It is pretty easy
to make a piece of 1/2" 6061 that fits over the engine block holes,
which are about 0.4" ID. Tapping the block out to 3/8" NPT allows
a -8
fitting to be used, without any reduction in the internal diameter.
The FD oil filter pedestal can be mounted almost anywhere. Using an
angle bracket gives a lot of options. For Paul: Is 1/4" 6061 with
3/8" NPT threads strong enough to handle the 100 psi or so from
the oil
system, or must an angle bracket be made of thicker material?
Thanks
Scott Gettings
Hi Scott, Just a suggestion while your in the planning stage: If
you mount the filter can horizontally some oil will remain in the can
and you will need to catch it when you change the filter. If you have
the opportunity to mount it vertically, gravity will drain the oil
effectively one way up or leave the can full the other way up. Either
way up will make oil changes more manageable and if their easier
to do
they'll get done more frequently. Remember oil quality is especially
important to the rotary in aviation use. Dave M
Great suggestion, thanks! I can easily mount this bracket on the back
of the PRSU plate (pusher configuration) with slightly longer hoses,
which would give a vertical filter orientation. (My oil pan contains 6
quarts, too.)
Can anyone answer the above question as to whether the 1/4" 6061 with
3/8 NPT threads will be strong enough for the 100 psi or so of the oil
system? I suppose one approach would be to test it to 300 psi.
Scott Gettings
Scott
I did something similar on the final filter on our biodiesel processor but
used 4.5mm stainless. I notice the high pressure oil pump would cause the
hoses to vibrate so that is was my justification for going strong.
I welded stainless hose nipples on the outlets which is not an option for
you. 1/4" or 6mm Al. angle is pretty thin for what you are using it for.
A fatigue crack on this plate would drop your oil filter, release a hose or
both. It is not only pressure that concerns me. It is a critical piece of
equipment for your continued well being therefore:
IMHO
I would go with steel or stainless steel and have some 3/8" tapped bosses
TIG welded to the angle. For the depth and type of thread that info. should
be available from the place you purchased the fittings from. I actually
made my own angle out of flat bar stock because I wanted a good flat
sealing surface for the oil filter holder. I picked stainless because I
have a lot of it around, it's nice to TIG weld and its strong. If you want
to save weight you can always round corners, and triangulate the mounting
leg and use three smaller bolts.
If you go with a thicker plate of Al. similar to what you used above, I
imagine you could also have this tapped and welded to the PSRU plate as
well. Perhaps under your re drive.
DougFir
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