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Irvine 53 Mounting Footprint

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Braddock, VC25/09/2017 21:58:14
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1464 forum posts
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Does anyone know if the mounting footprint for the irvine 53 is the same as the OS AX series 46/55?

Martin Harris25/09/2017 23:06:47
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7560 forum posts
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Comparing a 46 AX (rear needle) with a British Irvine 53 visually, the mounting hole pattern seems identical but the OS is 1/16 of an inch or so longer to the prop driver. The Irvine is maybe 3/16 of an inch higher but the exhaust flanges line up - and have the same hole spacing so could use each other's silencers if required. My only 55 is in a model so I can't check but the data from OS should be available on line...although I have noted that there are later versions of the 46/55 now...

Edited By Martin Harris on 25/09/2017 23:13:30

cymaz26/09/2017 05:26:26
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7589 forum posts
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THIS link should help. From what I can see the entire manual is on the thread....first few postings down

 

Edited By cymaz on 26/09/2017 05:27:54

Denis Watkins26/09/2017 07:47:39
2715 forum posts
137 photos

Yes the AX, SC, OS, ASP and Irvine are on 17.5mm mounting hole centres

And 44mm beam mount centres

Edited By Denis Watkins on 26/09/2017 07:49:39

Braddock, VC26/09/2017 08:29:53
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1464 forum posts
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Thanks all for the info, had hoped to fit a 4 stroke but will try the model out as is before changing the engine, can't decide which engine to put in it, I have a choice of a laser 70 which will require major firewall surgery, an OS 52 fs and, favourite for the moment, a Saito 82 which will allow me to swing a scale size prop.

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