Kelly,
I wasn't going to go there, but since you mentioned it, here goes. I wanted to go with the Renesis CAS, so needed a CAS timing wheel. I bought this new, and in order to get a CAS timing wheel, I had to buy the entire hub/pulley/wheel assy. I figured why not go with the Renesis WP also, which is what I did. The Renesis pulley is different and would have messed up the eccentric end-play setting if not modified. So, lots of careful measuring later, I visited my machinist friend and made the necessary mods to the Renesis hub. Also, made a thin precision spacer. When all was done, the hub was installed on the 20b, but without the Renesis front cover. I could not see any benefit to using the lower portion of the Renesis front cover, so I cut off the WP and threw the rest away.
I messed around for 2 years trying to get the Renesis CAS to work with the EC-2 and finally gave up and reinstalled the original 20B CAS, which is what I'm currently using. (It is working well now.) However, I never removed the Renesis hub, so I don't know what would be necessary to get the pulleys to line up with the stock 20B hub. Someone else will have to go down that road. For now mine is running good, cooling well, and I'm not going to touch anything for a long time.
Mark
On Wed, May 4, 2011 at 1:00 PM, Kelly Troyer <keltro@att.net> wrote:
Mark,
Thanks for the "Real World Info"................I was fairly confident the Renesis front cover could be
bolted to the 13BREW and Cosmo 13B/20B but I was not aware of the counterweight interference
on the 20B not having seen inside one...............This is the kind of information this group is famous
for.............The sharing of knowledge to help each other over the hurdles of adapting the Rotarys
for aircraft use.............One reason I suggested the use of the complete Renesis front cover was to
allow the use of the stock eccentric hub/trigger wheel/pulleys without the need for any spacers to
align the pump,alternator and eccentric pulleys.................The Renesis front cover is approx 1 inch
shorter from gasket surface to front of the eccentric shaft oil seal than the 13B/20B covers..........
Mark did your Renesis pump installation require any pulley adjustments for belt alignment and did
you use a Renesis eccentric shaft pulley ??...............
Kelly Troyer
"DYKE DELTA JD2" (Eventually)
"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50 Turbo
From: Mark Steitle <msteitle@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Wed, May 4, 2011 11:42:40 AM
Subject: [FlyRotary] Re: water pump housing
Kelly/Tom,
You are correct that the Renesis front cover can be made to fit on a 13B/20B, but the pan bolts are a different pattern which will require modification to your oil pan. Also, the 20B front counterweight is larger than the Renesis causing the cover to interfere with the 20B's front counterweight. Material will need to be milled out for the cover to fit, but in doing that, you will end up cutting through the cover which will require tig welding the holes. Finally, the RX-8 front cover is heavier than the 13B/20B front cover with Renesis water pump. Personally, I don't see an advantage to using the Renesis front cover.
Mark S.
(Been there, done that.)
On Wed, May 4, 2011 at 11:11 AM, Kelly Troyer <keltro@att.net> wrote:
Tom,
One additional thing comes to my mind...........I do not have a RX8 Renesis front side
housing (cast iron) but from all of my research of photos I am fairly confident that the
RX8 front housing (aluminum) will bolt directly to the 93-95 13BREW and Cosmo 13B
and 20B with some minor mods (to possibly clear bolt heads on the 20B front side hsg)
and the drilling and threading of 1 to 3 existing bosses for 8 mm x 1.25 studs or bolts..
Kelly Troyer
"DYKE DELTA JD2" (Eventually)
"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50 Turbo
From: Kelly Troyer <keltro@att.net>
Sent: Wed, May 4, 2011 10:32:44 AM
Subject: [FlyRotary] Re: water pump housing
Tom,
Source for pump with improved impeller...........They also have used pump and eccentric shaft pulleys......
"Mazmart" is located in Atlanta, GA............
Kelly Troyer
"DYKE DELTA JD2" (Eventually)
"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50 Turbo
From: Tom Giddings <tom@midwestaviation.net>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Wed, May 4, 2011 10:17:50 AM
Subject: [FlyRotary] Re: water pump housing
Thanks Again!! Kind Regards
Tom Giddings
VP Avionics Sales
Midwest Avionics
200 Hardy Roberts Drive
Paducah, KY 42086-0219
Online Store
Tom,
Try these two RX8 recyclers............
Kelly Troyer
"DYKE DELTA JD2" (Eventually)
"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50 Turbo
From: Thomas Giddings <tom@midwestaviation.net>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Wed, May 4, 2011 9:02:53 AM
Subject: [FlyRotary] Re: water pump housing
Mark: Thanks again....I must be getting old.. I remember now that you did tell me that in one of our phone conversations...just now sinking in...as matter of fact i just found the photo's you sent of your pump housing and engine set -up. Kelly...you are a very helpful resource as well..I will try to find this after market pump. The question is does anyone have a RX8 water pump housing they would sell?
Tom Giddings
VP Avionics Sales
<Midwest>
On May 4, 2011, at 9:52 AM, Mark Steitle wrote:
Tom,
I'm running a modified Renesis water pump housing. As you know, the 20B WP housing is very tall with the thermostat section protruding up above the engine. The Renesis WP housing uses a side intake/discharge but is integrated with the front cover. The WP section must be cut away from the remainder of the Renesis front cover to be used on a non-Renesis application.
The Renesis WP cartridge is much lighter than the cast iron 20B cartridge, but the impellor is very cheaply made. In the stock configuration, it may not pump enough coolant to cool a 3-rotor. I went with an aftermarket WP cartridge which has a SS impellor similar to that of the 20B. I'll have to look for the info on that. Pump was a bit pricey at $265.
You may also need a custom WP pulley to run a Renesis pump on a non-renesis engine.
Mark
<20B_WP_Picture 002 small.JPG>--
Homepage: http://www.flyrotary.com/
Archive and UnSub: http://mail.lancaironline.net:81/lists/flyrotary/List.html
|