Today's Message Index:
----------------------
1. 05:34 AM - Re: Lycoming Thunderbolt Engines (Archie)
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: | Re: Lycoming Thunderbolt Engines |
Not likely to happen, inasmuch as I have lost interest and sticking
to race only engines. I would be curious as to any measurable
differences on the dyno, however.
I personally have no interest in developing roller rockers for aircraft,
but if so, would go with a stainless version rather than aluminum
for a number of reasons.
Archie
----- Original Message -----
From: Red Hamilton
To: engines-list@matronics.com
Sent: Monday, June 26, 2006 12:42 AM
Subject: Re: Engines-List: Lycoming Thunderbolt Engines
Archie,
If you ever do that please let us know.
Thanks,
Red Hamilton
----- Original Message -----
From: Archie
To: engines-list@matronics.com
Sent: Saturday, June 24, 2006 6:45 AM
Subject: Re: Engines-List: Lycoming Thunderbolt Engines
Two companies tried that in aviation, and failed.
There are a series of parameters that do not directly apply to
aircraft use,
but for the most part, why re invent the wheel, when the racing
industry
has been using a variety of these for about 50 years.
They are available in extruded aluminum, forged aluminum, and
stainless,
fully rollerized, or bushed and roller tipped, and in any ratio
desired.
(After correcting the ratio on a number of aircraft rockers, it is
obvious that
the factory does not pay close attention to this)
As far as strength, no contest here: Where an aircraft may have open
pressure
of approx. 300lbs, we run open pressures of around 1000 lbs.
Another significant advantage to the roller rockers is reduced valve
guide wear.
Not sure of HP gains on a slow turning ac engine, but might be
interesting to dyno each.
Archie
----- Original Message -----
From: n801bh@netzero.com
To: engines-list@matronics.com
Sent: Saturday, June 24, 2006 2:12 AM
Subject: Re: Engines-List: Lycoming Thunderbolt Engines
Geez,,, Roller rockers are pretty easy to fabricate, test and
furnish.. Cheap HP gains from them too.. You would figure a company like
Lycoming, with 60+ years of supposable R&D would have addressed that
simple thing years ago. Now,,, if they can get their crankshafts from
breaking they might go somewhere. You can bet if one does break on this
new line of experimental engines the their response will be "_uckoff"
,,,,Their is something wrong with in installation.. They will not stand
behind their certified engines.!!!!!!!!!!!!!!!!
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! --
|