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HelicopterEngines Plugs Mufflers Fuel › Perry pump with Webra 91
09-02-2003 07:01 PM  14 years agoPost 1
Henke Beyers

rrNovice

South Africa

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Hi Guys

I'm experimenting with a perry pump on a webra 91. I'm struggleling a bit with the setup of the pump. The motor is already run in and I used the stock settings on the pump. The problem is that the motor runs inconsistently and then dies on a full power climb out, but with the normal setup of header tank and exhaust pressure runs fine.

Is there any sort of guide on how to setup the pump? My carburator settings is 2 full turns out on main and about 7 turns out on idle.

Plug is enya 3 and fuel contains 10% nitro.

Any help would be appreciated.

Thanks
Henke

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09-02-2003 07:11 PM  14 years agoPost 2
sharam

rrElite Veteran

Northern California - Fly at Morgan Hill Field

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search?

Have you tried a search on this site? I know that a few Webra 91 users have used the pump successfully on their engines and have posted their comments.

I don't use one on my Webra 91.

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09-02-2003 09:41 PM  14 years agoPost 3
G.Man

rrProfessor

Bristol

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webras seem to like uniflow setups maybe that would be a better bet than a perry pump?

Don't Email me as I wont reply - PM Only (spam countermeasures)

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09-02-2003 09:56 PM  14 years agoPost 4
DOKEY

rrProfessor

Northamptonshire UK

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Could be a faulty Perry Pump.

Heard there is a few duff ones about.

Have you tried altering the spring tension, either by streching the spring or taking the screw in a few turns ?

Ryan.

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HelicopterEngines Plugs Mufflers Fuel › Perry pump with Webra 91
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