Today's Message Index:
----------------------
1. 10:08 AM - Belt rumble vibration (Larry McFarland)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Belt rumble vibration |
--> Stratus-List message posted by: "Larry McFarland" <larrymc@qconline.com>
Hi guys,
I've been chasing a pulse thinking the engine was missing
because it vibrates a bit when it's cold and the pulse is felt until things warm
up. After replacing the rotor, cap, plugs and checking coils and wires, it
runs well warm, but there is still a rumble, vibration band at 2500 to 2800 rpm
that seems a bit intense. Above and below that band everything sounds smooth.
Am I looking at the difference between the seasonal warm of recent and the cold
which is only 30-40 degrees cooler? It doesn't change when running off the A-distributor
ignition or B-flywheel ignition, so perhaps it's the belt or my mixture. Still
a 60-70 degree
difference in EGTs, right being higher. Belt is snug to spec and the prop is tracking
within 1/32" each blade, but there's still more vibration than I'd like to fly
with.
Any ideas on this? I feel like I've missed something here.
Larry McFarland - 601HDS - Stratus at 45 hours and holding.
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|