Home -> RV-9 and RV-9A topic: Wilksch Diesel engine

Author: "rv9builder" <mschrimmer@...> Time: Wed Sep 10, 2003 9:58 pm PDT Link

--- In RV-9A@yahoogroups.com, "dave_boxall" <dcboxall@b...>
wrote:
> Wilksch Diesel engine on order!
>
Hey Dave,

What's the story on the Wiksch? Is it actually for real? What made
you choose it, how expensive, how fast, how many are flying, etc.,
etc.

Mark


Author: "dave_boxall" <dcboxall@...> Time: Thu Sep 11, 2003 3:40 am PDT Link

Mark,

Engine No 52 has my name on it, and when I signed up for it at the
PFA rally in July the delivery was quoted as being "a little over a
year". My deposit fixes the price I pay and gives me a production
slot that I can postpone if I'm not ready. Wilksch have two
production spec engines flying, their Europa demonstrator and the
first customer engine in a Thorp T-211. The installation in the T-
211 is reviewed in "Pilot" magazine. You can read the article on the
Wilksch website http://www.wilksch.com/ via the "press coverage"
link.

Is it for real? Yes. It became a lot more real in May with the first
customer engine. That gave me the confidence to buy the option.
There still are questions, not least that the customer "120" engine
is currently only released at 100hp. They are confident of increasing
the HP to 120 soon. They've had 130HP from the engine in the test
cell, but have not yet concluded endurance testing at 120HP.

How Fast? I guess that depends a lot on the airframe & prop
combinations. Steve Arnold in the UK is hoping to have his WAM-120
powered RV-9A flying by Christmas so that should answer a few
questions.

How Expensive? 12,000 UKpounds ($18,000) for the 120hp, 16,000UKP for
the 160hp ($25,600).

Why did I choose it? There are a bunch of minor reasons that don't
really amount to much (British, new design Vs "Lycosaurus", nice
bunch of guys, Jet A1 goes off with a slightly smaller bang if you
crash, increased range etc.) but there is one Killer App. Here in
the UK 100LL is about 1 Pound/litre or about $6 a gallon. Jet A1 is
about 1/3 of the price. What made me buy the engine was the statistic
that the O-200 powered T-211 was costing 23 pounds/hr for fuel but
the WAM-120 was costing 8 pounds/hr - that's $35 vs $13. I know that
fuel cost isn't the biggest expense in the world, but it is the one
you have to put your hand in your wallet for every time you go out
and fly.

It does show considerable optimism to sign up to such a new engine,
but the signs do seem pretty good at the moment. I'm also hoping that
we have a few more customer engines flying and at least one RV-9A
before I have to part with more than my deposit.

Dave

Left wing
Wilksch Diesel engine on order!

--- In RV-9A@yahoogroups.com, "rv9builder" <mschrimmer@p...> wrote:
> --- In RV-9A@yahoogroups.com, "dave_boxall" <dcboxall@b...>
> wrote:
> > Wilksch Diesel engine on order!
> >
> Hey Dave,
>
> What's the story on the Wiksch? Is it actually for real? What made
> you choose it, how expensive, how fast, how many are flying, etc.,
> etc.
>
> Mark


Author: "rv9builder" <mschrimmer@...> Time: Thu Sep 11, 2003 2:23 pm PDT Link

--- In RV-9A@yahoogroups.com, "dave_boxall" <dcboxall@b...>
wrote:
>
> Is it for real? Yes. It became a lot more real in May with the first
> customer engine.

Dave,

Thanks for all the info on Wilksch. Please keep us posted on
your progress.

Mark Schrimmer


Author: "peterjroy2000" <peterjroy@...> Time: Fri Sep 12, 2003 3:48 am PDT Link

Hi, I read with interest your note about the WAM engine, I am keen
to see this develop but have a couple of concerns, namely:

Obtaining Jet A1 from small strips /fields that I prefer is unlikely
to be easy, even getting 100LL often adds annoying extra legs to a
journey (I own a Maule).
Putting diesel in the tank is a non-starter without a lot of care
with filtering etc. & who sells diesel at an airfield anyway, this
would make touring somewhat tiresome.
I see the WAM 120 as being at the low end of the performance scale
especially when it is really only 100hp stretched to 120hp- seems
that the engine would always need to be thrashed to achieve
a power output at the bottom end of Vans design spec.
The biggest task is the design of engine mount & mods to cowlings etc
this is definitely not small beer & could push the cost so far up
that any fuel cost gain would be a long time coming, never mind
the monumental task of dealing with the pfa (I have some exp. of
doing a mandatory pfa mod. & getting caa approval of a long
established mod to my Maule) both of these issues were v.hard work.

I know this is a lot of negativity but it could make operating the
aircraft very tedious. I think it's fair to say that the WAM needs a
lot more test data before it's viable & that should come from WAM not
from homebuilders.

--- In RV-9A@yahoogroups.com, "rv9builder" <mschrimmer@p...> wrote:
> --- In RV-9A@yahoogroups.com, "dave_boxall" <dcboxall@b...>
> wrote:
> >
> > Is it for real? Yes. It became a lot more real in May with the
first
> > customer engine.
>
> Dave,
>
> Thanks for all the info on Wilksch. Please keep us posted on
> your progress.
>
> Mark Schrimmer


Author: "Steve Sampson" <SSampson.SLN21@...> Time: Fri Sep 12, 2003 11:08 am PDT Link

Mark - when I started my -9a back in early 2001 I was pretty committed to
putting a WAM in it and Mark Wilksch was adamant he would have a unit flying
in a -9 by late 2001. By early 2003 I needed to start ordering the finish
kit and the idea of having to delay my project for engine development seemed
to be wrong for me so I now have an O-0320 sitting on the frame.

I hope the WAM engine works well, and the fuel price advantage here in the
UK is massive, but a slippage (so far) of 2 years, in a bit less than 3,
would not have suited me. One other point, I could not own an RV that looked
like the Wilksch engined one at the PFA rally. Because of the high crank
shaft, making elegent cowlings looks difficult.

All these problems will get solved in the end, but my project is for fun
(not frustration).

Steve.



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