[SPAM] Re: OS 1.4 RX Header and Pipe installation in Focus II

[Chris Moon]

Bob:
    I know that Macs has header with different rises than the OS.  I 
have a 2 1/4" rise header that I got from them that I run in my Eclipse 
(s).  Just my opinion, but I think the 23% nitro is not necessary at 
all.  I would not expect anything as far as better performance over 
15%.  Also, the 17-13 might be more load than it likes, especially when 
it is new and you are trying break in the motor.  I thought the 17-12 
was the best 2 blade prop, or a 15 3/4 - 10 or 11 3 blade APC "Lockhart" 
for an awesome combination.

Also - check out Ed Hartley's web site for lots of other OS pipe - prop 
etc combos

http://www.rcpattern.com/2cycle.htm

Chris


Robert Harden wrote:

> I would like some advise for installing a header and pipe in a Focus 
> II.  I have the OS 1.4 RX engine, the OS 72102100  Header and the OS 
> T-6010 Tuned Silencer.  My problem is that the header has interference 
> with the firewall. I don't really want to remove material from the 
> firewall to gain clearance.  Is there another header that I could 
> use?  My other question is if the OS Tuned Silencer is the best 
> choice?  I also would like to know what the length should be if the 
> tuned silencer is used.  I am planning to use an APC 17 X 13 prop and 
> Magnum # 1  2 cycle fuel (approx 23% nitro).  All suggestions are welcome.
>  
> Bob Harden

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