Today's Message Index:
----------------------
1. 02:21 PM - WARNING NSI Subaru EA81 accessory failure causing smoke in cockpiot and engine failure. (Belinda Glover)
2. 07:40 PM - DeltaHawk Diesel and RV's (Martin Sobel)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | WARNING NSI Subaru EA81 accessory failure causing smoke |
in cockpiot and engine failure.
Hello,
I have just experienced an alternator bearing seize in a British Europa
with the NSI engine although at the time I had no idea of the cause. The
aircraft was damaged in the forced landing over small fields and that
was a reasonable outcome under the trying circumstances.
The cockpit filled with smoke and the engine stopped. The dual v-belts
are strong enough to create a lot of smoke and stop the crankshaft drive
pulley creating enough heat to change the black anodisation to a reddish
colour. The belts vulcanised and stripped and stuck to the crankshaft
pulley.
In the standard Dual belt NSI installation, if either the water pump
(also driven off the v-belts) or alternator seizes you have a single
point failure mode which, possibly due to the sprag clutch gearbox
allowing the prop to freewheel, does not provide enough flywheel effect
to break both belts. As a glider the freewheeling prop has much
increased drag over engine at idle during practice forced landings which
means that the practice is incomparable to the real event.
This is the second time this alternator seizure and forced landing with
smoke in the cockpit has happened to an NSI EA81 to my knowledge. The
other was also a U.K. Europa NSI combination which was never properly
investigated at the time.
After much searching I cannot find any other example of this engine
failure anywhere including in the U.S.
If anyone knows of such a failure please let me know as soon as
possible.
Regards
Gary McKirdy
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | DeltaHawk Diesel and RV's |
--> Engines-List message posted by: Martin Sobel <rv8vator@comcast.net>
I just returned from OSH.
I have been looking at the 180 hp DeltaHawk Diesel over the past several
years.
See: http://www.deltahawkengines.com
Despite the difficulty of a brand new engine, I feel the benefits of this
diesel are too numerous to overlook. It will pay for itself by the time a
Lycoming is due for an overhaul. This forecast was made with last years fuel
prices.
I spoke with both DeltaHawk and Curt LoPresti of LoPresti Speed Merchants
<http://www.speedmods.com> about LoPresti designing both an engine mount and
cowl for the RV-8. If I can get a sufficient number of builders interested
in the DeltaHawk engine, LoPresti has agreed to design an engine mount and
Cowl.
One of LoPrestis concerns about getting into the homebuilt market is that
it is very easy to rip off a design for a cowl or fairing. A production
engine would need an STCd design. Selling only firewall forward kits might
help solve this problem. Any other ideas?
MT has a constant speed propeller on the DeltaHawk Velocity. Aero Composites
<http://www.aerocomposites.com> will be supplying a test propeller shortly.
I am hoping to get some support from Vans in identifying builders who might
be interested in taking the plunge, but as you may know, Van has not been
too supportive of alternative engines.
I have also spoken with DeltaHawk about starting a Yahoo Group for their
engines.
Should there be sufficient interest to proceed with this program I will
visit DeltaHawk for a first hand view of their engine and its progress. The
180 hp engine will be perfect for the RV-8/A. A properly designed cowl
should yield additional speed or economies. I dont think that there is a
better design company than LoPresti.
As a back up, I also spoke with Sam James. He said that they were very busy,
but he would talk with me. His location is not too far from me, nor is
LoPresti for that matter.
Id also appreciate any ideas in getting this word out to RV builders. I may
be that RV 7 and 9 builders could also benefit from this program.
Martin Sobel
7040 Treymore Court
Sarasota, FL 34243-5500
941-359-8693
941-539-4806 (Cell)
941-355-7732 (Fax)
614-789-4325 (thru 8/23/06)
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|