90 lx prop nut  
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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> Jett Engineering Support >> 90 lx prop nut
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90 lx prop nut - 1/10/2007 2:07:54 AM   
phjoker



Posts: 361
Joined: 9/20/2005
From: Vernon, NJ, USA
Status: offline 		Hello Bob. Let me start out by saying thank you. I spoke to dubb on the phone twice
and he is the nicest person.My engine was delivered right on time like he said.(I only called
the second time to see when he shipped it)
I am putting this engine (sj90lx) in the New Cermarrk F-16 and I am using the metal spinner
and back plate that Cermark supplied with the one screw in the center. I need to get a prop
washer and nut.The spinner/nut that was supplied with the engine will not work.
What size thread is the shaft? and where can I get the nut and washer from if you know
Thank You

< Message edited by phjoker -- 1/10/2007 2:17:56 AM >

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RE: 90 lx prop nut - 1/10/2007 3:19:00 PM   
bob27s



Posts: 4821
Joined: 4/9/2002
From: Cleveland, OH, USA
Status: offline
quote:

ORIGINAL: phjoker

Hello Bob. Let me start out by saying thank you. I spoke to dubb on the phone twice
and he is the nicest person.My engine was delivered right on time like he said.(I only called
the second time to see when he shipped it)
I am putting this engine (sj90lx) in the New Cermarrk F-16 and I am using the metal spinner
and back plate that Cermark supplied with the one screw in the center. I need to get a prop
washer and nut.The spinner/nut that was supplied with the engine will not work.
What size thread is the shaft? and where can I get the nut and washer from if you know
Thank You


Thanks for writing. Always good to know folks are pleased with the service and the products

The prop stud threads are standard 5/16-24 threads ...... same as used for the OS61/91FX engines, ST60/90, and a number of other 60/90 size engines. Fairly standard hardware items. You should be able to find these at the local hobby store. And if desired Tru-Turn, Dave Brown and others offer spinners and spinner mounting kits for this size prop thread.
Examples....
http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXK236&P=0
http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXKE05&P=7
http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXB939&P=0

If I am not mistaken, doesn't the Cermark kit supplied spinner come with the spinner mounting nut and hardware?
http://www.cermark.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=C&Product_Code=SR250

It has been a while since I build my F-16. I used a Tru-Turn spinner on it eventually.

Bob


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Bob Brassell
Jett Engineering - Engine Mfg Support Forum Host

(in reply to phjoker)
       Post #: 2

RE: 90 lx prop nut - 1/10/2007 9:12:05 PM   
phjoker



Posts: 361
Joined: 9/20/2005
From: Vernon, NJ, USA
Status: offline 		thank you Bob. Yes cermark does supply the hardware but for some reason there
spinner nut does not go all the way to the prop .It get tight before it reaches


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Revver Bro #157

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RE: 90 lx prop nut - 1/10/2007 9:23:40 PM   
bob27s



Posts: 4821
Joined: 4/9/2002
From: Cleveland, OH, USA
Status: offline 		hmmmmm...

ensure that the prop shaft stud is turn in far enough. It is removable/replaceable. Turn it in until it stops, then back it out a couple of turns.

Usually the problem is folks do not have enough shaft threads exposed to put a washer and nut in place (in which case you can back the stud out a few more turns).

With an 11x8 or 12x6 prop, you should be able to use the stock spinner hardware.


_____________________________

Bob Brassell
Jett Engineering - Engine Mfg Support Forum Host

(in reply to phjoker)
       Post #: 4

RE: 90 lx prop nut - 1/11/2007 12:17:22 AM   
phjoker



Posts: 361
Joined: 9/20/2005
From: Vernon, NJ, USA
Status: offline 		i will give it a shot thanx

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Revver Bro #157

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       Post #: 5

RE: 90 lx prop nut - 1/14/2007 3:04:04 PM   
phjoker



Posts: 361
Joined: 9/20/2005
From: Vernon, NJ, USA
Status: offline 		eeeeerrrrrr uuummmmm YEA I forgot to put the washer on thanx

_____________________________

Revver Bro #157

(in reply to phjoker)
       Post #: 6

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