|Braddock, VC||25/09/2017 21:58:14|
1464 forum posts
Does anyone know if the mounting footprint for the irvine 53 is the same as the OS AX series 46/55?
|Martin Harris||25/09/2017 23:06:47|
7198 forum posts
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
7100 forum posts
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 Watkins||26/09/2017 07:47:39|
|2123 forum posts|
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, VC||26/09/2017 08:29:53|
1464 forum posts
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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