Today's Message Index:
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1. 01:10 PM - Carb rebuild - Xtra credit question (Roger Lee)
2. 01:16 PM - Rotax 912 gearbox pictures (Roger Lee)
3. 02:44 PM - Re: Rotax 912 gearbox pictures (Richard Girard)
4. 03:28 PM - Re: Rotax 912 gearbox pictures (Roger Lee)
5. 03:34 PM - Water in the fuel question (Roger Lee)
6. 06:21 PM - Re: Water in the fuel question (Richard Girard)
7. 07:24 PM - Re: Water in the fuel question (Roger Lee)
Message 1
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| Subject: | Carb rebuild - Xtra credit question |
Hi Guys,
I think this might light another fire, but here goes.
Lucien,
As a retired fireman I have thick skin, extra water and hose to
extinguish those fires. (Thick skin mostly) LOL
Is there a difference between the 200 hr carb inspection and a rebuild?
If so who can do the work, i.e. what Rotax rating is required to do one or either?
Note***
If your are experimental I know you are not required to follow the Rotax regs.
but SLSA do and I would recommend from what I have seen come across my bench
that you find someone with training. It can save you money down the line.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=311282#311282
Message 2
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| Subject: | Rotax 912 gearbox pictures |
Hi Guys,
I don't remember if I posted these pictures? If I did disregard.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=311283#311283
Attachments:
http://forums.matronics.com//files/binder3_621.pdf
Message 3
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| Subject: | Re: Rotax 912 gearbox pictures |
Okay, Roger, I'll bite. I don't see any evidence that there is lead packing
in the clutch teeth and the interior of the gearbox housing appears clean,
BUT, it also appears to not have had any oil in it. From all the rust on
bearings, prop shaft, and gears it seems this was a gearbox stored
improperly.
Rick Girard
On Fri, Sep 3, 2010 at 3:16 PM, Roger Lee <ssadiver1@yahoo.com> wrote:
>
> Hi Guys,
>
> I don't remember if I posted these pictures? If I did disregard.
>
> --------
> Roger Lee
> Tucson, Az.
> Light Sport Repairman - Maintenance Rated
> Rotax Repair Center
> 520-574-1080
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=311283#311283
>
>
> Attachments:
>
> http://forums.matronics.com//files/binder3_621.pdf
>
>
--
Zulu Delta
Kolb Mk IIIC
582 Gray head
4.00 C gearbox
3 blade WD
Thanks, Homer GBYM
It is not bigotry to be certain we are right; but it is bigotry to be unable
to imagine how we might possibly have gone wrong.
- G.K. Chesterton
Message 4
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| Subject: | Re: Rotax 912 gearbox pictures |
Hi Rick,
This gearbox has 30 minutes on it. It was a prop strike on a new plane and sent
in for inspection and a dye test. The rust looking areas are actually Rotax factory
use of Copper anti-seize for a lube during assembly.
When I get one in with a lot of 100LL use at about 800+ hrs. I'll try and remember
to post a picture.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=311300#311300
Message 5
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| Subject: | Water in the fuel question |
Hi Guys,,
Question:
Which fuel are you more likely to see water in, 100LL or our present day 91 Oct
when you catch your sample down at the gascolator? Why?
p.s.
If you find it in one verses the other what should yo do?
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=311301#311301
Message 6
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| Subject: | Re: Water in the fuel question |
Roger, you didn't say whether the 91 octane mogas has ethanol in it or not,
but I'm going to assume it has. Ethanol is hygroscopic, so it is the more
likely to have water. If you find water in 100LL you drain it. Water in 91
means it has fallen out of solution in the gas so the best bet is to drain
the tanks and lines and get new gas.
I say that although I have just gone to the store and bought a can of Heet
(pure ethanol gas line deicer) and dumped it in to put the water back in
solution. In that case the gas was new, we were suffering from extremely
high humidity (above 80%) for about 12 hours out of the day, and the
aircraft had no fuel drain, just a clear filter where I could see the little
bead of water. The HKS ran fine on it. The extra ethanol would have
increased the octane of the fuel slightly and with a compression ratio of
11.3 to 1 it can use all the octane it can get.
Rick Girard
On Fri, Sep 3, 2010 at 5:34 PM, Roger Lee <ssadiver1@yahoo.com> wrote:
>
> Hi Guys,,
>
> Question:
>
> Which fuel are you more likely to see water in, 100LL or our present day 91
> Oct when you catch your sample down at the gascolator? Why?
>
> p.s.
> If you find it in one verses the other what should yo do?
>
> --------
> Roger Lee
> Tucson, Az.
> Light Sport Repairman - Maintenance Rated
> Rotax Repair Center
> 520-574-1080
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=311301#311301
>
>
--
Zulu Delta
Kolb Mk IIIC
582 Gray head
4.00 C gearbox
3 blade WD
Thanks, Homer GBYM
It is not bigotry to be certain we are right; but it is bigotry to be unable
to imagine how we might possibly have gone wrong.
- G.K. Chesterton
Message 7
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| Subject: | Re: Water in the fuel question |
Hi Rick,
Your exactly right. The water in 100LL doesn't go into solution so you see it show
up quick and the fuel is not H2O saturated. So if there was only a small amount
in your sample tube then you shouldn't have any issues with the fuel retaining
any water and the 100LL is ok to use.
The 91 Oct. with the ethanol that most of us have to use will suspend the water
which isn't a big deal because the Rotax will just burn it through. If you see
water in 91 Oct. with the ethanol then it's time to drain your tanks because
that means the fuel is saturated to the point that it can't hold anymore and
now the water is accumulating in quantity. So when 91 Oct gets that saturated
with H2O that you can visibly see it at your drain point it's time to dump that
fuel.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=311326#311326
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