Dual Elevator Thingy.

[Rcmaster199 at aol.com]

Steve, Hyde engine mounts (and Hyde type, homemade units), are  unsurpassed 
when it comes to engine vibration attenuation. I would wittle a  little and fit 
this mount in.
 
The smaller models are not as easily outfitted with dual servos at the  stab. 
There would usualy be a CG or weight  penalty. Its a great solution  for 
larger planes tho. 
 
The MK belcrank is okay, except the main pushrod will need some support to  
keep it from shaking in synchrony. This set-up is surprisingly heavy even with  
single servo driving the whole contraption. 
 
The twin carbon push rod set-up (that Nat Penton originated some 25 years  
ago, BTW) is an excellent alternate method. 
 
My favorite is pull-pull because of the 4 point independent adjustment  
available, and overall lightness of the system. The lightest around at around  1/3 
oz complete with clevises and couplers.
 
BTW, thanks for the plug. When setting up pull-pull, simulate dynamic load  
on the surfaces by using rubber bands to pull the surface back to center (from  
behind the plane) when setting up cable tension. Light tension on the cables 
is  far better than heavy tension BTW. Guitar string tightness will wear the 
servo  out prematurely. Please remember, eye bolts only for the hook ups. I've 
had  Dubro threaded couplers rip through steel cable before, so beware
 
MattK
 
In a message dated 12/27/2004 11:18:56 AM Eastern Standard Time,  
whisperingsmith at speakeasy.net writes:

Greetings,
I have need for some input. I'm running behind on my  Epsilon project so 
I bought an Excelleron to be sure I'll be able to  compete (Dist. 8 
Sportsman rookie) should the Epsilon not be ready when  the monsoon 
season ends here in the Pacific NW. I'm wondering what you  fellow 
fliers of this model (Excelleron) are doing for elevator linkage???  I 
DO NOT want to run elevator  pull-pull so it looks like either  Troy's 
DEP gizmo or an MK doo-hicky. However, upon examining the fuse it  would 
seem like dual servos are possible as well. I just picked up some JR  
DS3301's (God bless ebay) & after sending them in for inspection  
they'll be awaiting a good home - elevators?.
Power will be courtesy of  either my YS 91 or 110 because I'd rather fly 
than spend the day trying to  get a dumb-stroke to run properly  (Flame 
suit currently being mended  so be gentle).
Anyhoo, could I get some idea of any balance or other  problems I might 
incur with my engine & possible tail mount servo  choice? I'd also like 
to know what ya'll (for you guys east of me - youse  if you're real 
east) are doing for engine mounts. Will the stock mount  take a YS 110? 
I have a Hyde mount which I'd prefer to use but it looks  like some 
whiitlin' (ca'van) might be in order.
You guys are  a  TREASURE of information & fun when yer not fightin n' 
fussin like wet  hens!!!!
Steve B.

PS Anyone needing pull-pull cable (rudder or  otherwise)- Matt has the 
best stuff I've come across! Email him at  Rcmaster199 at aol.com


 
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