David Williams 2 Posted June 25, 2008 Share Posted June 25, 2008 I have a new SC46A engine and the manufacturer says run it on fuel with a minimum 20% castor oil . Will Model Technics GN-5 be ok ? Quote Link to comment Share on other sites More sharing options...
Andy Green Posted June 25, 2008 Share Posted June 25, 2008 Hi DavidA quick Google found this on the JPerkins Site, which states that GN5 has 20% castor.I've an SC 46 and have only ever run it on Prosynth 5%, and it runs a treat in my Weston Cougar 2000.Andy Quote Link to comment Share on other sites More sharing options...
David Williams 2 Posted June 25, 2008 Author Share Posted June 25, 2008 Cheers for the info Andy . One less worry ! Quote Link to comment Share on other sites More sharing options...
Alex Hasell Posted June 29, 2008 Share Posted June 29, 2008 David i have just got the exact same engine and fuel which is running for first time today ill let you know how i go and would be interested on hearing what you find to be the optimum settings Quote Link to comment Share on other sites More sharing options...
Former Member Posted July 7, 2008 Share Posted July 7, 2008 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Former Member Posted July 7, 2008 Share Posted July 7, 2008 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Simon Chaddock Posted July 7, 2008 Share Posted July 7, 2008 HiWD40 (it used to be called Rocket WD40 supposedly as used by rocket engineers!) is great stuff but its main purpose is as a penetrating oil rather than for a long term protection. Great for freeing things up but it evaporates quite quickly and eventually leaves behind a sticky film, not nearly as bad as castor but it can mark the surface. 3in1 is much kinder for long term storage. I have restored a number of antique (over 100 years old) sewing machines and you wouldn't believe how troublesome really old oil deposits can be.One final point if you store in the loft you can get quite extreme temperature and humidity conditions, far from ideal, so liberal oil and wrap (preferably seal) in polythene. It will then last longer than you! Quote Link to comment Share on other sites More sharing options...
Former Member Posted July 8, 2008 Share Posted July 8, 2008 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Phil Claridge Posted July 9, 2008 Share Posted July 9, 2008 was advised by a very experienced engine guru not to use wd40 ,as it aslo loosens rust on any bearings Quote Link to comment Share on other sites More sharing options...
Former Member Posted July 10, 2008 Share Posted July 10, 2008 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Alex Hasell Posted July 10, 2008 Share Posted July 10, 2008 dont think i would use any engine that had rusty bearings a you say only place that should fly is its self straight ito thenearest bin!!!!!!!!!!! Quote Link to comment Share on other sites More sharing options...
flytilbroke Posted July 10, 2008 Share Posted July 10, 2008 I am wary of using WD40 or alternative equivelents after experience of seal damage in an industrial environement. This was highlighted after extreemly expensive seals failed in weeks when they should have lasted years. It is designed as a penetrating and releasing agent, not as a lubricant.After run oil is advised with good reason by a number of model engine manufacturers. In the quantities we would use, it is not expensive.I have had engines treated after use with it, then left for quite a long time, still turn freely and on inspection show little corrosion which was not there before storage. Quote Link to comment Share on other sites More sharing options...
Engine Doctor Posted July 10, 2008 Share Posted July 10, 2008 Hi Be very wary if you use WD40 for freeing up gummed engines. I have experienced enines firing when flicked over with wd 40 in them and it can be very painful .Beware.E.D Quote Link to comment Share on other sites More sharing options...
001 Posted July 11, 2008 Share Posted July 11, 2008 I would not use WD 40, as a number of members have mentioned, as for after-run oil I always use Automatic Transmission Fluid, one 500 ml. bottle will last you a lifetime. Quote Link to comment Share on other sites More sharing options...
Phil Claridge Posted July 11, 2008 Share Posted July 11, 2008 you would not know if had rusty bearings if you just used wd40 to free off an engine then ran it, without stripping it down. the engine guru used to soak engines in parafin for afew days to loosen them up. iknow he reads this forum so he may reply sometime with his reasons for doing it his way, regards phil Quote Link to comment Share on other sites More sharing options...
Alex Hasell Posted July 11, 2008 Share Posted July 11, 2008 Vegtable or olive sir??? Quote Link to comment Share on other sites More sharing options...
Alex Hasell Posted July 11, 2008 Share Posted July 11, 2008 Phil,I think the fact that trying to turn an engine over by hand during pre run checks would produce interesting results, certainly sounds at least if it had been left or abused to the extent that the bearings had rusted, therefore internal investigation would be the norm surley before you tried to run such an engine not least for safety's sake! upon which you would discover the "rusted" bearings you would then know the problem and therefore i for one would not use such an engine unless the problem was rectified. .Alex Quote Link to comment Share on other sites More sharing options...
Former Member Posted July 12, 2008 Share Posted July 12, 2008 [This posting has been removed] Quote Link to comment Share on other sites More sharing options...
Alex Hasell Posted July 12, 2008 Share Posted July 12, 2008 Glad you got it EricYeah have a good'n Rocket.... Quote Link to comment Share on other sites More sharing options...
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