REFLECTOR: vernatherm Brian Michalk
Brian Michalk
michalk at awpi.com
Sat Nov 19 19:51:01 CST 2011
No problem I will have six left. Just looking at the spring, it's
indistinguishable from the original part. It just feels a little stiffer.
On 11/17/2011 07:31 PM, aminetech at bluefrog.com wrote:
> Brian,
> I'm interested in the spring also, although I'm not convinced I need it.
> Jeff,
> How can you tell that you're on the boarder of bypassing?
> Thanks,
> John
>
> --- michalk at awpi.com wrote:
>
> From: Brian Michalk <michalk at awpi.com>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> Subject: Re: REFLECTOR: vernatherm Brian Michalk
> Date: Thu, 17 Nov 2011 18:37:16 -0600
>
> I am checking on the springs.
>
> I found a schematic I drew up many years ago. I pulled the bypass
> assembly and figured out where all the galleys are connected.
> http://www.tvbf.org/gallery/index.php?display=engines%2Ffranklin%2Foilbypass.gif
>
>
> On 11/17/2011 05:08 PM, Jeff Howell wrote:
>
> Brian,
> Could you send me one of your stiffer springs? when my
> oil is below 120f and I am at high rpm my oil pressure is on the
> border of bypassing the oil. I believe that if you change the
> spring to a stiffer spring it will bypass at a higher pressure...
> Is this correct? if so do you have a pay pal acct. so I could pay
> you for a spring?? thanx Jeff
>
> ------------------------------------------------------------------------
> Date: Wed, 16 Nov 2011 15:30:34 -0600
> From: michalk at awpi.com <mailto:michalk at awpi.com>
> To: reflector at tvbf.org <mailto:reflector at tvbf.org>
> Subject: Re: REFLECTOR: vernatherm
>
> Do you have high CHTs as well?
> If you are aggressive on your timing, retard it to 28BTDC, and see
> if your temps go down.
>
> I don't think adding a vernatherm is going to help you. The
> Franklin has a pressure bypass, and with hot oil, all of it should
> be going through the cooler. You can try a stiffer spring on the
> bypass if you are not getting max oil through the cooler. I think
> I still have some, if you want one.
>
> Most everyone I know is running 5/8" lines to the cooler(s). What
> size are yours? Also, where are you measuring your oil temps?
> 245F is too high, and it means that in some portion of your system
> it's hotter.
>
> On 11/16/2011 2:32 PM, Grover McNair wrote:
>
> The franklin engine I have in my 173LW is running high oil
> temp, 245+. Having read recent posts, I am planning to install
> a larger oil cooler with a vernatherm. I would appreciate
> comments from those who have done this. Is there a
> modification necessary for the factory oil bypass valve?
>
> Grover McNair
>
> N832AB
>
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