Today's Message Index:
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1. 04:23 AM - Re: Re: How many gallons per hour with VW Redrive (Richard Girard)
2. 06:16 AM - Re: Repairmen Inspection (ropermike)
3. 06:29 AM - Re: Repairmen Inspection (cristalclear13)
4. 09:42 AM - Re: Re: How many gallons per hour with VW Redrive (Dana Hague)
5. 05:00 PM - Re: Repairmen Inspection (Beauford T)
Message 1
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| Subject: | Re: How many gallons per hour with VW Redrive |
The answer is weight. A built up crankshaft weighs less. It also allows the
use of a "folded" (Eric Tucker's terminology) design of the crank throws,
which makes the crank shorter, which makes a smaller, shorter crankcase
which also reduces weight. Incidentally, the folded crank throw doesn't
allow room for rod bolts, so no after market rods are likely.Okay, Dana,
jump in and tell every one weight has absolutely nothing to do with it. :-}
Rick
On Mon, Mar 16, 2009 at 4:15 PM, John Hauck <jhauck@elmore.rr.com> wrote:
>
>
> > Interesting concept...not sure that I have seen that
>
>> before? Makes me think that at 4k or so for the assy the after market
>> could make money rebuilding them with different rods with split big
>> ends.. Herb
>>
>
>
> Does anyone know why Rotax when the same route with cranks for 4 strokes as
> they did for 2 strokes?
>
> Not being an engineer, I have to rely on what little bit of good ole common
> sense I inherited. A cursory glance at the crank tells me it may be lighter
> and cleaner for turning higher speeds. Might reduce drag, increase
> performance.
>
> Just guessing. I don't know.
>
> I do know that the only problem Rotax has experienced with a 912 crank was
> oil starvation. A few seconds of oil starvation and the engine is toast.
> What is the primary cause of oil starvation? Losing an oil line. Jim Lee,
> Sharon, PA, lost his life near Lakeland, FL, when he was flying a Kolb MKIII
> with floats. Lost an oil line on a 912, stalled and crashed.
>
> Losing an oil line on a 912 should not happen. The intake line is under
> vacuum, pump is pulling oil. The outlet line is under 3 to 5 psi (crankcase
> pressure) to push oil out of the crankcase, back to the oil tank.
>
>
> john h
> mkIII
>
>
Message 2
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| Subject: | Re: Repairmen Inspection |
Thanks Cristal and Scott. My instructors will be Carol and Brian Carpenter. I am
looking forward to the class.
--------
The next best thing to playing and winning is playing and losing!...Mike Hillger
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=234961#234961
Message 3
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| Subject: | Re: Repairmen Inspection |
ropermike wrote:
> Thanks Cristal and Scott. My instructors will be Carol and Brian Carpenter. I
am looking forward to the class.
Oops, sorry Mike. I was thinking Sport Aviation Specialties, not Rainbow Aviation.
Hopefully it'll be as good. :)
--------
Cristal Waters
Kolb Mark II Twinstar
Rotax 503 DCSI
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=234962#234962
Message 4
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| Subject: | Re: How many gallons per hour with VW Redrive |
At 07:23 AM 3/17/2009, Richard Girard wrote:
>Okay, Dana, jump in and tell every one weight has absolutely nothing to do
>with it. :-}
Are you kidding? Weight is EVERYTHING! :)
-Dana
--
The first rule of intelligent tinkering is to save all the parts.
Message 5
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| Subject: | Re: Repairmen Inspection |
I thought the Carpenters were very good indeed... I won't dare to speak for Mr.
George T. Alexander, eminent member of this list, who sat next to me and managed
to
keep me conscious for most of the class,
(and allowed me to copy from his final exam paper to prevent my total humiliation)
but I thought they were competent and skilled presenters. Time well spent.
beauford
FF-076
Brandon, FL
----- Original Message -----
From: "cristalclear13" <cristalclearwaters@gmail.com>
Sent: Tuesday, March 17, 2009 9:29 AM
Subject: Kolb-List: Re: Repairmen Inspection
ropermike wrote:
> Thanks Cristal and Scott. My instructors will be Carol and Brian Carpenter. I
am
> looking forward to the class.
Oops, sorry Mike. I was thinking Sport Aviation Specialties, not Rainbow Aviation.
Hopefully it'll be as good. :)
--------
Cristal Waters
Kolb Mark II Twinstar
Rotax 503 DCSI
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=234962#234962
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