[NSRCA-discussion] Servos suggestions for a 90 size pattern plane

[Vicente "Vince" Bortone]

High vibration levels will require more power to compensate.  Yes, more torque will be required in strong vibration environment .  It is like you have an unbalance prop.  The power output is less since some is been use by the vibration.  It is difficult to explain but for sure is there.  Another example is the effect of the soft mounts.  It is well know that large gasoline planes required several servos per surface to compensate the additional vibration.  If we use soft mount (I do in 100 cc planes) in those large planes we can reduce the number or servos per surface.  Currently I am using one servo in 100 cc plane with soft mount.  I have seen the same plane with 3 servos without the soft mount. 



VB  


----- Original Message ----- 
From: "Jay Marshall" < lightfoot @ sc . rr .com> 
To: "General pattern discussion" < nsrca -discussion at lists. nsrca .org> 
Sent: Friday, June 12, 2009 10:29:03 AM GMT -06:00 US/Canada Central 
Subject: Re: [NSRCA-discussion] Servos suggestions for a 90 size pattern plane 




Are you confusing torque and current drain? The additional current drain is probably due to more corrections due to vibration. The torque requirements shouldn ’t differ and therefore the required size of the servo should be the same – or am I missing something? 




Jay Marshall 

-----Original Message----- 
From: nsrca -discussion-bounces at lists. nsrca .org [mailto: nsrca -discussion-bounces at lists. nsrca .org] On Behalf Of Vicente "Vince" Bortone 
Sent: Friday, June 12, 2009 10:51 AM 
To: General pattern discussion 
Subject: Re: [NSRCA-discussion] Servos suggestions for a 90 size pattern plane 




Mike, 



I agree.  I am flying the same plane electric and glow (Abbra).  The electric uses around 50-60 mah and the glow 150-200 mah per each Master round.  This is about 1/3 of the power.  For sure, electric planes can use smaller servos. 



VB 
----- Original Message ----- 
From: "mike mueller" <mups1953 at yahoo.com> 
To: "General pattern discussion" < nsrca -discussion at lists. nsrca .org> 
Sent: Friday, June 12, 2009 9:24:59 AM GMT -06:00 US/Canada Central 
Subject: Re: [NSRCA-discussion] Servos suggestions for a 90 size pattern plane 


 Tommy I worried about the 3421's until I looked at the size servo's that QQ was running on his Euphoria. He runs dual ailerons on 1 small servo. I'm running 3421 metals on my ailerons on my new Sickle so far so good. It was because of weight and also because I really think an E. plane can get away with less servo. I run it on a 6volt regulated 2 cell lipo. I think everyone is in to the security that overkill allows and that's great if your not worried about the weight. Mike 

--- On Fri, 6/12/09, Tommy Scarmardo <tretas513 at yahoo.com> wrote: 

> From: Tommy Scarmardo <tretas513 at yahoo.com> 
> Subject: Re: [NSRCA-discussion] Servos suggestions for a 90 size pattern plane 
> To: "General pattern discussion" < nsrca -discussion at lists. nsrca .org> 
> Date: Friday, June 12, 2009, 9:13 AM 
> The 3421sa's are great little 
> servos, I have two on elevator on my new ship, but you 
> should be careful where you use them. The motor is 
> stronger than the nylon gear 
> train and is easily stripped under certain conditions. 
> The gears are tiny. 
>   
> tommy s 
> 
> --- On Fri, 6/12/09, mike mueller 
> <mups1953 at yahoo.com> wrote: 
> 
> 
> From: mike mueller <mups1953 at yahoo.com> 
> Subject: Re: [NSRCA-discussion] Servos suggestions for a 90 
> size pattern plane 
> To: "General pattern discussion" 
> < nsrca -discussion at lists. nsrca .org> 
> Date: Friday, June 12, 2009, 7:47 AM 
> 
> 
> 
> How about JR 3421SA on everything but the rudder which 
> would work well with a JR 8321. Mike 
> 
> --- On Fri, 6/12/09, Dean & Melissa Williams <DMWILLIAMS at bigpond.com> 
> wrote: 
> 
> > From: Dean & Melissa Williams <DMWILLIAMS at bigpond.com> 
> > Subject: [NSRCA-discussion] Servos suggestions for a 
> 90 size pattern plane 
> > To: nsrca -discussion at lists. nsrca .org 
> > Date: Friday, June 12, 2009, 7:40 AM 
> > 
> > 
> >  
> >  
> > 
> > 
> >  
> > Hi 
> > Which servos 
>  (brand and #) 
> > would you use for a 90 
> > size pattern plane like the ESM Adrenaline 90 and 
> which 
> > ones on what surfaces 
> > ? 
> > Thanking you for your 
> > sugestions 
> > 
>                                                
> > 
> > Dean (Outback OZ) 
> > 
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