Webra 160 XP

[Chris Moon]

Richard:
    I'm just running Cool Power 10% with a Bolly MF590 muffler.  I ran a 
gallon of 15% Cool Power, and it seemed to be close to the same 
performance - not enough to switch. The OS F plug is the ticket too, I 
tried lots of others, and not as good as the F plug. 

Chris

Richard Strickland wrote:

> Chris,
>  
> What fuel and %, please?
>  
> Richard S.
>
>     ----- Original Message -----
>     From: Chris Moon <mailto:cjm767driver at hotmail.com>
>     To: Amram Privat <mailto:amram at leshed.com> ; discussion at nsrca.org
>     <mailto:discussion at nsrca.org>
>     Sent: Monday, October 11, 2004 8:55 AM
>     Subject: Re: Webra 160 XP
>
>     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/e9615ba4/attachment.html