Thanks Ed.
But I've not been running AvGas at all. Only 87 10% ethanol pump
gas.
I bought the AR2592 plugs as recommended replacements.
Now having watched some youtube videos I may try cleaning the
stock plugs in my ultrasound cleaner.
Found one site that claims the RX-8 gap is 1.2mm. So now I don't
know why the AR2592 plugs with their 0.6mm gap are recommended.
Finn
On 5/25/2023 3:25 PM,
eanderson@carolina.rr.com wrote:
Finn,
That sounds a lot like the onset of rpm drop caused by lead
fouled plugs. I used to get around 100 hrs and then would
start getting Sparkplug SAG (engine rpm dropping off). It
seem to get worst during high power (such as take off) engine
regimes.
Regapping did not help and I never found a way of removing
the lead suspected of providing a grounding path inside the
plug.
I would recommend a new set of plugs.
Ed
------ Original Message ------
Date 5/25/2023 9:13:07 AM
Subject [FlyRotary] AR2592 gap
For those of you who use the AR2592
spark plug in the Renesis, do you use the 0.6mm gap the
plug comes with? I bought 8 of them some years ago.
I've been using the stock plugs
(RE7A and RE9B) for maybe 100 hours by now. Experienced a
brief 200 RPM drop on last takeoff Wondering if it's time
to change plugs. Or re-gap the stock plugs to what?
What can I learn by looking at
plugs?
Best way to clean them?
Finn