TT Pro 1.20 Question

[Rcmaster199 at aol.com]

Yes.  Not like a vacuum pump would produce of course, but it is sufficient 
reduction in pressure to actuate the check valve


MattK

> Subj:Re: TT Pro 1.20 Question 
> Date:6/29/2004 7:53:20 PM Eastern Daylight Time
> From:tph1 at bellsouth.net
> Reply-to:discussion at nsrca.org
> To:discussion at nsrca.org
> Sent from the Internet 
> 
> 
> 
> Does the pump create enough of a vacuum to use a one way valve?
> 
> >> ----- Original Message ----- 
>> From: Rcmaster199 at aol.com 
>> To: discussion at nsrca.org 
>> Sent: Tuesday, June 29, 2004 7:35 PM
>> Subject: Re: TT Pro 1.20 Question
>> 
>> 
>> It sounds like a pumped set-up. The tank vent should be left open during 
>> operation, to allow air to enter as the fuel is used up. The caveat is that 
>> the vent will often syphon fuel out if the vent is out in the slip stream. I 
>> use a YS check valve to allow air in but no fuel out.
>> 
>> The 2 stroke 120 engine type should be able to turn a 16x10-11;  17x9-10 
>> fairly well in the usable rpm range we need.
>> 
>> Why such a large engine on such a small model?
>> 
>> MattK
> 

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