Mailing List flyrotary@lancaironline.net Message #63763
From: Stephen Izett stephen.izett@gmail.com <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] overheating issue
Date: Sat, 4 Nov 2017 17:02:10 +0800
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
> Hi Christian
> Not very much in the way of bubbles. Small amount of very small 0.5mm bubbles.
> Nothing compared to what Ive seen from head gasket trouble in pistons.
> Thanks
> Steve


> On 4 Nov 2017, at 4:37 pm, Christian christamarmc@gmail.com <flyrotary@lancaironline.net> wrote:
>
> Hi Steve
> Unfortunately yes, if leaking gases into the water it will get hotter,
> When it's being run can you see bubbles arising in the overflow tank, may only present itself when it warms up.
> Neil unfortunately just had this issue with a newly rebuilt motor.
> I've also had this issue, I then swapped to tracy,s seals.
>
> Hope this helps.
> Cheers
> Christian
>
> Sent from my iPad
>
>> On 4 Nov 2017, at 5:45 pm, Stephen Izett stephen.izett@gmail.com <flyrotary@lancaironline.net> wrote:
>>
>> Hi guys
>>
>> Our 4 port renesis in the Glasair has begun to get hotter.
>> We have been taxi testing and noticed temps rising higher than previously seen.
>> Unfortunately also noticed a tiny weep of water and the tiniest bubble appear between the rotor housing and rear plate yesterday.
>> So looks like o ring failure maybe beginning.
>>
>> Do rotaries overheat as a result of an o ring failure?
>> Ive pressure tested it and it will hold ~10psi for half an hour.
>> What are the important issues re overheating in rotaries?
>>
>> Thanks
>>
>> Steve Izett
>> Glasair Super II RG Renesis 4 port RD1C
>>
>>
>>
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