Webra Problem

[Joe Lachowski]

Randy,

Make sure you check your fuel filter. In the Spring especially, it can get 
plugged up from pollen.


>From: "Randy" <randy10926 at comcast.net>
>Reply-To: discussion at nsrca.org
>To: <discussion at nsrca.org>
>Subject: Re: Webra Problem
>Date: Thu, 10 Jun 2004 23:06:24 -0400
>
>MessageIt sounds like I may have a pump problem.  I may need to send it in 
>to get it fixed.  Do not seem to be able to get is too rich; even after 
>turning puimp pressure in one turn.
>
>But it does seem to be somewhat better.  Low to mid-range seems to work 
>just fine.  Just going past mod-range on a upline seems to be a problem.
>
>Randy
>   ----- Original Message -----
>   From: Lee Davis
>   To: discussion at nsrca.org
>   Sent: Wednesday, June 09, 2004 6:22 PM
>   Subject: RE: Webra Problem
>
>
>   Check the high end mix on the ground.  If you can set it so the engine 
>is obviously too rich then you do not have a pump problem.  If you cannot, 
>then replace the pump diaphrams.  They can distort if the pump gets 
>overheated which is not uncommon.
>
>   If you have a lot of time on the engine you might be due for a rebuild.  
>Replace the rear bearing, con rod (it tends to get sloppy on the wrist pin) 
>and ring.  Assuming you have an AAR the sleeve will outlast several ring 
>replacements.
>
>   The 1.60's are cool and all, but the truth is a solid 1.45 will yank an 
>even overweight pattern plane around like a toy.  IMO, stick with it.  If 
>you have a few bucks to spare buy it one of the mixture control carbs - 
>sweet setup.
>
>   Lee Davis
>   Piedmont Models
>     -----Original Message-----
>     From: discussion-request at nsrca.org 
>[mailto:discussion-request at nsrca.org] On Behalf Of Randy
>     Sent: Wednesday, June 09, 2004 1:56 PM
>     To: discussion at nsrca.org
>     Subject: Webra Problem
>
>
>     My webra 145 with a normal carbo seems to be losing power on the up 
>lines.  It seems to me that the pump should delive a near constant flow of 
>fuel.  So I should not need to have is real rich on the high end to handle 
>the up lines.  But still losing power on uplines, so have been richening 
>it.
>
>     Low end seems fine.

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