If Mazda comes out with the 16B. you could make a one rotor that
could get
150 hp N/A using 16B parts. Yes/no?
Clifton
I would say yes if it was a p-port.
BTW I was thinking we might get a group buy from Hurley Engineering
on cut
down 13B e-shafts and counter weights.
Lets say the cost is $300 for those parts. Then you could build an all
aluminum (roughly 200 pound) one rotor p-port for about $8500 with Tracy
PSRU. 3,000 for the end housings, 1,000 for new p-port rotor
housing, 3,000
for the PSRU and a 1,000 for miscellaneous stuff.
Paul Lamar ...No rotor no motor.
---------------------------
The biggest problem that I have with a good water cooled automotive
engine
in the 100 HP range is paying that $3000 for a PSRU, not to mention
that
they usually weigh 40+ pounds. The 40 pound PSRU accounts for about
20% of
the target FWF engine weight and (potentially) 50% of the cost. The
heavy
duty PSRU is needed for the 200 HP engines, but way overkill for 100 HP
engines. If a PSRU could be designed and built for say $1000 that would
weigh 20 pounds or less I would say this would be significant. All
of the
weight savings that I have seen mentioned costs more money....how about
lighter and cheaper!!!
Any thoughts on a low cost light weight PSRU that will work with a
single
rotor engine?
Jeff
The only way your going to get it down to that is if you make it
yourself.
However you might want to take a look at a VW bus axle reduction unit.
Paul Lamar
---------------------------
Paul,
I know it is for VW, but Valley Engineering builds a very nice belt PSRU
that only weighs 8 pounds and costs $1495 (and includes free
shipping in the
US)
http://www.culverprops.com/valleyintro.htm I have no idea if a
similar
PSRU could be made for a single rotor rotary, but 8 pounds and $1500
is MUCH
better than 43 pounds and $2500 (for a RD-1A). I do not mind building
something on my own. I have an excellent tech school machine shop
that has
made stuff for me in the past, the problem is that I am not an
engineer and
designing a part like this is almost certainly beyond my capabilities.
I am not familiar with the VW bus axel reduction unit, can you point me
towards where I might find some information on that?
Jeff
Not a good design. Cantilever everything. Puts a side load
on the rear main that it is not designed to accept.
I am not talking about pre load tension. Has nothing
to do with pre load. Anytime you are transmitting HP
with a belt or chain there is a side load. Best to
stradle mount everything like this Ken Welter belt drive.
Paul Lamar ...No rotor no motor.
Cantilevered shafts can be handled with proper design, no? Not
suggesting that this does it though..
Does Mr. Welter's drive support the end of the shaft with cone (tapered)
bearing? I would think that would be the only way to preload the
bearing in such a way to actually provide support to the shaft..
Regards,
Matt-
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