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Author Topic: Saito FA 90 R technical advice needed  (Read 712 times)
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Chrisvn
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« on: June 06, 2017, 07:10:31 AM »

Hi

I am looking for some technical advice for my Saito FA 90 R3 - when I turn the engine over it make a "click" "click" sound. It is a second had motor that I bought and have not serviced it.  (I have experience a ASP 400 R5 and this motor does not make that sound when turned over ....

I am busy with a Fokker E "ish" scratch build and want to run the R3 in her.

Thanks

Chris

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Pit
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« Reply #1 on: June 06, 2017, 07:26:57 AM »

Check valve clearances.  Also the push rod to cam action - there might be some gunk in the rod covers or cam housing.
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« Reply #2 on: June 06, 2017, 07:29:02 AM »

From here, that sounds normal. My Saitos all make those valve tappet noise when the valve clearances are set to factory values.

As Pit indicated sticky cam followers are a real possibility. Take off the valve covers and look at the valve clearances. This should be part of the engine's maintenance.

All the best,
Konrad
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Chrisvn
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« Reply #3 on: June 06, 2017, 08:12:55 AM »

Take off the valve covers and look at the valve clearances. This should be part of the engine's maintenance.

Konrad

Thanks Pit /Konrad

Valve clearances as perfect ... will give feedback after I covered the frame and run the engine ... C
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« Reply #4 on: June 06, 2017, 08:21:32 AM »

Might I recommend that you bench run the engine off the airframe. I find this makes adjustments, trouble shooting easier and doesn't beat up the nice model.
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Chrisvn
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« Reply #5 on: June 06, 2017, 08:26:48 AM »

Jip ... it is only on the plane for the picture ...... !
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