Webra 160 XP

[Chris Moon]

Amram:
    I think the best answer to all of the Webra problems...pump, 
overheating etc is called the OS140RX.  I cannot say enough good things 
about this motor.  All season (almost 40 gallons) it has been fuel and 
fly - no fuss no fiddling no reliability problems. (Ok, I did change 1 
bearing)

Chris
 (my opinion is worth what you pay for it)



Amram Privat wrote:

>Hello Ed.
>This is a great help. I am not a Webra Guru at all. In fact, if I go for it
>it will be my first expiriance with Webra.
>I don't know - I will have to reconsider the Webra. Maybe OS140RX or back to
>YS140L
>Thanks
>Amram
>
>
>----- Original Message ----- 
>From: "Ed Alt" <Ed_Alt at hotmail.com>
>To: "Amram Privat" <amram at leshed.com>; <discussion at nsrca.org>
>Sent: Monday, October 11, 2004 1:11 PM
>Subject: Re: Webra 160 XP
>
>
>  
>
>>Amram:
>>The Webra 1.60 seems to do a poor job of transferring heat to the fins and
>>head.  I learned that the Webra 1.60 really needs attention to ducting
>>plenty of air to keep the bottom of the engine cool.  I had problems with
>>the main bearing loosening up and allowing the crankshaft to shift
>>    
>>
>backwards
>  
>
>>enough to cause the prop thrust washer to dig into the crankcase.  This
>>happened twice on two almost new engines.  I also had problems with the
>>    
>>
>pump
>  
>
>>going flakey, also most likely attributable to excessive heat buildup.
>>    
>>
>The
>  
>
>>other thing is that it is somewhat touchy to adjust.  It runs wonderful
>>    
>>
>when
>  
>
>>everything is just right.  However, you get it right for one temperature,
>>humidity and field elevation and it completely changes on a different day
>>    
>>
>or
>  
>
>>location.  Some change is expected, but you have to really learn what the
>>engine wants if you plan to be able to fly it competetively.
>>
>>Some guys have great luck with the engine.  Locally, one top flyer has
>>    
>>
>been
>  
>
>>getting better results after switching to the VP30 pump with his Webra.
>>    
>>
>The
>  
>
>>best I can say for it as a competition motor is that it is delicate.  I
>>    
>>
>just
>  
>
>>got tired of fussing with the engine all the time, figuring it would be
>>better to be able to concentrate on flying instead of being a mechanic all
>>the time.
>>
>>Unless you are already at Webra guru status or have a local Webra guru to
>>commiserate with, I would suggest looking into an OS 1.40 RX or OS 1.60 FX
>>instead.  Since I could not locate a 1.40 at the time, I dropped the OS
>>    
>>
>1.60
>  
>
>>FX  with a VP30 pump in to replace my Webra in mid season and have had no
>>problems whatsoever.  I quickly got over the fact that it's side exhaust
>>    
>>
>and
>  
>
>>that it is a few ounces heavier.  The wrap around header is no big deal.
>>You can get one custom made from Karl Mueller or else you can buy a Hatori
>>header.  The Mueller headers are very nice.  You should plan on replacing
>>the main bearing with a stainless steel version.  If you stick with the
>>Webra, there are now SS bearings available for them too.
>>
>>BTW, the Webra 1.45 that I owned and flew in the same airplane during the
>>frequent 1.60 downtimes never had a problem with the main bearing shifting
>>around.  I accumulated about twice as much flight time on the 1.45, but it
>>had all the other issues that the 1.60 had, i.e., being touchy, having
>>    
>>
>pump
>  
>
>>problems etc.  I hope this helps.
>>
>>Ed
>>
>>
>>
>>----- Original Message ----- 
>>From: "Amram Privat" <amram at leshed.com>
>>To: <discussion at nsrca.org>
>>Sent: Monday, October 11, 2004 3:40 AM
>>Subject: Webra 160 XP
>>
>>
>>    
>>
>>>Hello
>>>I am about to order the Onyx140 (Protech) and my plan is to use Webra
>>>      
>>>
>160
>  
>
>>>XP.
>>>Any tips ideas or recommendations as to the Webra 160 XP will be highly
>>>appreciated.
>>>Thanks
>>>Amram Leshed.
>>>http://www.f3a-israel.com
>>>
>>>=====================================
>>># To be removed from this list, go to
>>>      
>>>
>http://www.nsrca.org/discussionA.htm
>  
>
>>>and follow the instructions.
>>>
>>>
>>>      
>>>
>>=====================================
>># To be removed from this list, go to http://www.nsrca.org/discussionA.htm
>>and follow the instructions.
>>
>>
>>
>>    
>>
>
>=====================================
># To be removed from this list, go to http://www.nsrca.org/discussionA.htm
>and follow the instructions.
>
>
>.
>
>  
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.f3a.us/pipermail/nsrca-discussion/attachments/20041011/9071a4ea/attachment.html