REFLECTOR: XL FG Hi Temps/ Siezed Aileron Cable

[Mark Magee]

Not sure the exact place as it was somewhere inside the nylon sleeve, but the injury was inside the cockpit. I'll try and post a pic of the first cable.

Mark B. Magee
Sent from IPhone 

On Nov 9, 2011, at 11:49 AM, Patrick Sieders <pjsieders at comcast.net> wrote:

> Where is the exact point of seizing ? And what is the closest heatsource to it ? Maybe put a temp sensor inplace right there temporarily.
> 
> Gr. 
> Patrick sieders
> Nashville TN
> 
> 
> 
> -----Original Message-----
> From: Mark Magee <edjonesbrady at gmail.com>
> Sent: November 09, 2011 11:28
> To: reflector at tvbf.org <reflector at tvbf.org>
> Subject: REFLECTOR: XL FG Hi Temps/ Siezed Aileron Cable
> 
> All,
> N34XL has some overtemp issues I have been addressing for about 9 months. With previous mods I had been running acceptable Oil Temps and CHT's, when flying SOLO/Lower fuel loads. Before the overtemp probs were solved the summer of 2010 after landing from flying the bird from Livermore CA to central Texas the ailerons were frozen after shutdown. After diagnosing, the RH side aileron cable was determined to have siezed, in some way from heat. I pulled and replaced with a new cable last summer. Scary but looked at as an anomaly. After a trip this weekend to Wichita Falls TX (166NM trip) the ailerons are again seized after shutdown after getting home (Thank You Lord!). On the trip home Oil temps peaked at 257F and CHT's peakedat 445F. At level off at 12,500 MSL all temps fell back to very normal ranges. I climbed out at 120KTS getting 500ft/min up at that speed. After calling the factory John told me to look at vortex generators on the top of the fuselage for the NACA's for the !
> engine and to climb at 130KTS and 300 ft/min which he theorized would actually turn into 500 ft/min. I forgot to mention on the way back from Wichital Falls I was right at max gross weight and we had a 76F ambient temp on the runway at takeoff. Temp at 12,500FT was 53F. After landing and debarking wife and kids, hangaring the bird and unloading I tried the stick and have siezed ailerons again. Initial troubleshooting points to RH Aileron cable again. As well I lost my vacuum pump (in the CLAG of course). After discussing with my A&P IA hangar mate, he felt that that the overtemp must be related to the stuck aileron cable and failed vacuum pump: basically all heat related.
> Anyone sized aileron cables on an Xl, or any Velocity. I have now seized TWO! Fortunately it appears that it is the heat soak after taxi in & shutdown that does the melting that complete's the seizing of the cable.
> Any help appreciated.
> 
> Thanks
> Mark Magee
> Brady TX
> N34LX FG 300 HP 75 HRS
> 
> Mark B. Magee
> Sent from IPhone 
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