Message-ID: <4053AD66.4070208@netdoor.com>
Date: Sat, 13 Mar 2004 18:55:02 -0600
From: Charlie & Tupper England <cengland@netdoor.com>
Reply-To: cengland@netdoor.com
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax)
MIME-Version: 1.0
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Nothing ever goes Smoothly!
References: <list-3076792@logan.com>
In-Reply-To: <list-3076792@logan.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit

Tracy Crook wrote:

>  
> In spite of all the glitches it is good to hear of all the progress on 
> rotary projects.  Snags being the norm, mine are no exceptions. 
>  
> The Renesis transplant was going smoothly after a rocky start (see 
> website for details) but I was hoping to do some minor mods to my old 
> intake manifold and stick it on the Renesis.  No Go, the secondary 
> ports are significantly wider spaced and bolt pattern is way 
> different.   So, since the new manifold is probably not going to 
> happen until after Sun 'n Fun I started on Plan B which was to put a 
> 2.85 : 1  RD-1C drive on my current 2nd gen engine along with the new 
> prop I got from Performance prop.  
>  
> Got the drive swapped out today (the B drive still looks perfect 
> inside after ~ 500 hours) but things went down hill fast.  New prop is 
> Right hand so the cutouts in the spinner & bulkheads were wrong (duh, 
> should have seen that one).  Had a new spinner on hand that I was 
> going to put on the -4 (the existing one has a slight wobble) so 
> started trimming it for the new prop.  Then did a trial fit and found 
> that the prop bolts are too short.  New prop has a monster 88" 
> pitch that required a thicker hub.  It is also lots longer (74").  
> Ordered new prop bolts.  Will spend the next few days tweaking my 
> cooling system ducts to improve the cooling enough to handle the 
> increased power I hope the engine will make at 6800 rpm which is what 
> I am guessing it will turn with the C drive & big stick.
>  
> It would have been a cinch to make the 220 mph mark to collect the 
> Everett Hatch prize in the upcoming Sun 100 race with the Renesis but 
> I might still have a shot at it.
>  
> Tracy

Probably just as well the Renesis didn't come together in time for the 
race. You would be honest & tell them that the core engine was rated at 
235 HP, right? :-) That would put you up against Dave Anders' -4 & that 
might be a pretty tough hill to climb.

Hope to see you there...

Charlie
'winging it' on an RV-7