Baffle or no baffle, that is the question

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3 years 4 months ago - 3 years 4 months ago #23975 by Phil Ford
Replied by Phil Ford on topic Baffle or no baffle, that is the question

Jon Tappin wrote:

Jeff Hobby wrote: Poor Dave, bit harsh


I did it for you Jeff, payback for the finger incident :)

:lol: Another roasting for poor Dave. I am "baffled" as to why Dave gets reminded of "classic fails" :unsure:
Last edit: 3 years 4 months ago by Phil Ford.

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3 years 4 months ago #23976 by Phil Ford
Replied by Phil Ford on topic Baffle or no baffle, that is the question
Speaking of baffles Jon, would foam board cope glued into a grp baffle. I think you said it was fine.:unsure:

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3 years 4 months ago #23978 by JonTappin
Replied by JonTappin on topic Baffle or no baffle, that is the question
I have used card faced foam board for baffling around flat twins and it's fine, I'm not certain it would be as good for a radial baffle as the air would be hitting it on its flat face, so may not be strong enough to cope with the pressure
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3 years 4 months ago #23979 by kevinross
Replied by kevinross on topic Baffle or no baffle, that is the question
I remember reading an article by Brian Winch about the Saito engines in which he emphasised the need to cool the crankcase. Note that the FG 84 & 90 have additional cooling fins attached to the crankcase in between the cylinders for good reason. So a simple flat baffle might not be ideal. This link has some useful info on Saito baffle construction. note that provision is made to cool the crankcase fins.

www.modelairplanenews.com/make-cooling-b...-engine/#outer-popup

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3 years 4 months ago #23981 by Hobby1964
Replied by Hobby1964 on topic Baffle or no baffle, that is the question
Thanks Kevin, I saw that article and like you say the larger engines have those cooling fins on the crankcase. Not sure if similar is required on the 60. Pictures are where I’m at up to now.
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3 years 4 months ago #23982 by Hobby1964
Replied by Hobby1964 on topic Baffle or no baffle, that is the question
Comments/criticism gladly received please

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