Webra problems - Page 2 - RCCanada - Canada Radio Controlled Hobby Forum
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Old 07-05-2008, 10:17 AM   #11
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I am: George S
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Re: Webra problems

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I purchased this engine for about $40. Given that it is a used engine and I'm putting it on a spad I think I've got a pretty good solution worked out. (restricting the muffler) I think you guys are right is saying that this engine has poor draw in the carb. This whole experience has me thinking that in the future I will probably spend the extra 30 or 40 when buying a new engine to get something in the high end.
Regardless of tank location you still have to climb. Which puts the carb in a position higher than the tank and thus giving you the same problem. My restricter I am using does not seem to create a great loss of power and has made this engine one of the most consistant running engines I have.
I brought this up because I had never seen a posting in reguards to this problem and it would seem to me that that a lot of people would have run into this situation. Thanks to all who commented. It is much appreciated

Cheers. George
I keep having the same mechanical problem. I've got a loose nut on the transmitter!

G-manz35 AKA. George St.Amant MAAC#75084
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Old 07-05-2008, 10:26 AM   #12
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I am: John Davidson
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Re: Webra problems

I have a Webra 40 Q500 version but also have a couple of Webra Speed's that are NS that I have been keeping for parts. Not that I will use them. (Ha) The problem with Webra especially there 40's was that they had different parts for there engines. They had a regular timed crankshaft and a high performance one. They also had a regular carb and some came with the Dynamix carb. I think the spelling may be wrong but it was a slide plate with a large bore.
If you had either part with a large bore muffler you start having idle problems. If you have the full HP setup then the problem gets worse. Closing up the exhaust and changing to a smaller bore carb will help but sometimes it will need some of the parts changed to get a reliable idle.
John Davidson
Keep the shiny side up and the wheels down
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