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  #21  
Old 05-03-2016, 10:03 AM
tomhanaway tomhanaway is offline
 
Join Date: Aug 2006
Posts: 313
Default

My aerosport IO-375 came with the updated dipstick. You might be able to contact them to purchase.
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  #22  
Old 05-11-2016, 12:58 PM
Berchmans Berchmans is offline
 
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Location: Anchorage, Alaska
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Default Complied

I picked up my replace stick today...it's about 3/8ths of an inch longer than the original and the markings have been move that corresponding difference. Wow, this seems like a tempest in a teapot as I must say I don't read mine that close when I pull it...needs to be off by a whole quart before I add...well, $167 later I hope Lycoming covers under warranty...
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  #23  
Old 05-11-2016, 07:43 PM
spatsch spatsch is offline
 
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Location: Plano, TX
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Quote:
Originally Posted by Berchmans View Post
I picked up my replace stick today...it's about 3/8ths of an inch longer than the original and the markings have been move that corresponding difference. Wow, this seems like a tempest in a teapot as I must say I don't read mine that close when I pull it...needs to be off by a whole quart before I add...well, $167 later I hope Lycoming covers under warranty...
Do you think you could post a photo showing both of them side by side?

I think I am confused. If the new one is longer then the old one with the same spacing of the markings starting at the bottom the old one should show a lower oil level indication then there actually exists. That would be a safe but potentially wasteful condition. However, the SB says the old one gives a higher oil level reading then there actually exists which is an unsafe condition so I am confused.

Would also be good to know how the warranty claim works out for you. I certainly won't spend 167$ for a new dip stick out of my pocket if I can just recalibrate the old one at my next oil change for free... . After all mandatory SBs have little legal meaning for an experimental engine... .

Oliver
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  #24  
Old 05-12-2016, 06:06 AM
BillL BillL is offline
 
Join Date: Sep 2007
Location: Central IL
Posts: 5,516
Default What if I do nothing? i.e. do not comply.

The SB says "5 quarts (5 liters)" like that is the same. Granted .28qt would seem like a minor difference, but 3/8" is probably less than that.


So - what happens with my new M1B, if I do nothing with this? Not to the engine, that is not relevant - it is the paperwork that counts to lawyers, FAA, and insurance.
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Lord Kelvin:
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and express it in numbers, you know something about it; but when you
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  #25  
Old 05-12-2016, 06:45 PM
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rzbill rzbill is offline
 
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Location: Asheville, NC
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I think I may just stamp "ish" next to each of the numbers on my dipstick......

Previous post about the new stick being longer has really got me curious.
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ME/AE '82
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  #26  
Old 05-13-2016, 05:39 AM
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grubbat grubbat is offline
 
Join Date: May 2012
Location: Ga
Posts: 662
Default Twin Comanche Oil Level has been off for 50 years

My 50 year old Twin Comanche has identical dipsticks on the Lycoming IO-320-C1A engines. However, the engines are not level due to the dihedral of the wings. What this means is that the left engine dipstick will indicate 1 qt more than actual and the right engine dipstick will indicate 1 qt less than actual. Its been this way for 50 years without a SB or AD.

Those of us with tail-draggers will also have an indication issue when parked no matter what dipstick you use. Sounds like this SB was issued without a lot of thought of reality or actual use. Maybe there is a market for custom made dip sticks for the newbie who has no knowledge of these matters. Who knows.
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  #27  
Old 05-13-2016, 07:22 AM
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airguy airguy is offline
 
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Location: Garden City, Tx
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When I changed the sump on my IO360 from Lyc standard to Superior forward facing, I simply made the *assumption* that the sump levels might be different, buffed out the marks on the dipstick and remarked it by pouring in a quart at a time. The new marks are almost exactly on top of the old ones...
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  #28  
Old 05-14-2016, 11:22 AM
Lux Wrangler Lux Wrangler is offline
 
Join Date: Feb 2005
Posts: 110
Default Much can be ascertained by finding out

Quote:
I think I am confused. If the new one is longer then the old one with the same spacing of the markings starting at the bottom the old one should show a lower oil level indication then there actually exists. That would be a safe but potentially wasteful condition. However, the SB says the old one gives a higher oil level reading then there actually exists which is an unsafe condition so I am confused. - Oliver
The dip stick is longer, but the 4 quart mark is higher up than before.
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  #29  
Old 05-28-2016, 06:52 PM
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rzbill rzbill is offline
 
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Quote:
Originally Posted by Lux Wrangler View Post
The dip stick is longer, but the 4 quart mark is higher up than before.
I did an oil change on my M1B today and the above note agrees with what I read on the "bad" 16783-18 dipstick. I put in 4 quarts and the oil level read well above the 4Q mark (I did not measure but it looked like 3/8 to 1/2"). Put in 5 quarts and did measure it. The level showed 3/8" higher than the midpoint between the 4Q and 6Q mark. Hmmm, does that mean I have been slack for 4 years? Not so fast, I don't run that low plus..........

I put in another quart to make it six and what do you know but the dipstick read 6Q dead on.

The upshot is, now I know. I may change the stick if I get around to it but it is no emergency for me personally. YMMV.

On a separate note I installed a Fumoto 202 oil drain valve today. No more fooling with the pipe plug. Only took 10 oil changes to make me get around to it.
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ME/AE '82
RV-7A: Flying since April 15, 2012. 850 hrs
YIO-360-M1B, mags, CS, GRT EX and WS H1s & A/P, Navworx
Unpainted, polished....kinda'... Eyeballin' vinyl really hard.
Yeah. The boss got a Silhouette Cameo 4 Xmas 2019.
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  #30  
Old 05-28-2016, 07:28 PM
BillL BillL is offline
 
Join Date: Sep 2007
Location: Central IL
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Quote:
Originally Posted by rzbill View Post
On a separate note I installed a Fumoto 202 oil drain valve today. No more fooling with the pipe plug. Only took 10 oil changes to make me get around to it.
Interesting, data usually is. On the off-topic: I installed the same valve with the nipple for attaching a hose. Will you be safety wiring the handle? How?
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RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
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