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Mark,
Using the two flexplates I would sure try to put the RD1X drive plate bolts through both if at
all possible...........Would be much stronger and less likely to fail from fatique IMHO..............
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: Saturday, July 16, 2011 2:38 PM
Subject: [FlyRotary] Re: Modified 20B/RX-8 flexplate
Kelly,
...Or easier yet, we could use tapered washers, available from McMaster-Carr ( http://www.mcmaster.com/#tapered-washers/=d7djrv).
Mark
On Sat, Jul 16, 2011 at 2:32 PM, Mark Steitle <msteitle@gmail.com> wrote:
Kelly,
Following up on your previous question... With a little heat in the right spots, I could flatten spots on the 20B flexplate for the four RD1X adapter bolts, allowing the heads to sit flat on the 20B flexplate.
Mark
On Sat, Jul 16, 2011 at 2:23 PM, Kelly Troyer <keltro@att.net> wrote:
Mark,
OK I have got it in my mind now..............I have an update...........The "ACT" flywheel was just delivered and
as soon as I get my mother fed I will see how the RD1X drive plate will fit the flywheel as I just happen to have
it here with me...............Keeping my fingers crossed that all my "AS"umptions work out !!.....................<:)
Kelly Troyer
"DYKE DELTA JD2" (Eventually)
"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50 Turbo
Sent: Saturday, July 16, 2011 1:58 PM
Subject: [FlyRotary] Re: Modified 20B/RX-8 flexplate
Kelly,
No, unfortunately the backside of the 20B flexplate is not flat in that area. You would need tapered washers to make that work.
Mark
On Sat, Jul 16, 2011 at 1:50 PM, Kelly Troyer <keltro@att.net> wrote:
Mark,
In my mind the four RD!X drive plate bolts would go through both flex-plates with a spacer between
them...............Is this not the scenario ??................
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: Saturday, July 16, 2011 1:42 PM
Subject: [FlyRotary] Re: Modified 20B/RX-8 flexplate
Bill,
Not sure which bolts you're referring, there are eight (8) around the outside perimeter, and another six (6) that bolt the assy. to the e-shaft. If you're referring to the four bolts that attach the 13B plate to the 20B/RX-8 plate, then yes, definitely torqued. They would need spacers so they would bolt solid and there wouldn't be any springiness.
The trick will be with the four (4) bolts that attach the flexplate assy to the aluminum adapter. Those bolts will have to be inserted through the 13b plate from the rear, then the two plates bolted together with the other four bolts, then the assy bolted to the e-shaft, and finally, the alum adapter bolted to the flexplate assy. I am picturing a special wrench that has been heated and bent to fit in through the lightening holes on the 20b flexplate. Its tight, but workable.
Mark S.
On Sat, Jul 16, 2011 at 1:08 PM, Bill Bradburry <bbradburry@bellsouth.net> wrote:
Mark,
Don’t you think the bolts need to be torqued? If you tighten them down against two plates, there will be some springiness no matter how stiff the plates are.
Bill B
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Modified 20B/RX-8 flexplate
Kelly,
Yes, spacers will be required, approximately .250" thick, unless I decide to connect the two plates via welding, then it won't matter if they touch or not. Originally, I thought they would nest together without the need for spacers. I like the idea of bolting them so it can be disassembled if necessary.
Mark
On Sat, Jul 16, 2011 at 12:32 PM, Kelly Troyer <keltro@att.net> wrote:
Do the bolt points of both flexplates nest together without any space between both
flexplates or will spacers be needed when bolting together ??............Could not tell
from the photo.................
Kelly Troyer
"DYKE DELTA JD2" (Eventually)
"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50 Turbo
All,
Attached is a picture of my proposed solution to the cracking flexplates. I used my old 13B flexplate, removed the ring gear, and nested it inside the 20B/RX-8 flexplate. It could be held together by bolting or by welding around the outer perimeter, similar to how the ring gear is attached, although welding may cause warping. If bolted, there would be ten bolts holding the two flexplates together. I favor the bolting method as the four bolts holding the aluminum adapter will be a bit tricky to install and bolting would make it a bit easier to assemble.
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