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Sun, 6 Dec 2020 19:07:47 +0000 Date: Sun, 6 Dec 2020 19:07:40 +0000 (UTC) Reply-To: To: flyrotary@lancaironline.net Message-ID: <238811978.475315.1607281660454@mail.yahoo.com> In-Reply-To: References: Subject: Re: [FlyRotary] Re: RD1-C damper MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_475314_135511535.1607281660452" X-Mailer: WebService/1.1.17114 aolloki unknown Content-Length: 9777 ------=_Part_475314_135511535.1607281660452 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Dave, were you running a stock 13B did you P/P it or any power increasing a= dditions (or subtractions)?=C2=A0Thanks=C2=A0Rich=C2=A0In a message dated 1= 2/6/2020 12:41:30 PM Central Standard Time, flyrotary@lancaironline.net wri= tes:=C2=A0 On 12/6/2020 10:52 AM, David Leonard wdleonard@gmail.com wrote: Steve, you are right.=C2=A0 The Issue is cracking og the auto-tranny flex p= late.=C2=A0 Mine failed entirely.=C2=A0 I highly recommend making the chang= e sooner rather than later.=C2=A0Dave Leonard On Sun, Dec 6, 2020, 12:48 AM Stephen Izett stephen.izett@gmail.com wrote: Hi Charlie I thought people moved to the race flywheels because the flex plates were c= racking.=20 I hadn=E2=80=99t heard of the Engine/Drive/Prop needing a flywheel mass. I found some info on the forum archive but nothing to draw it all together. I=E2=80=99ll have a good look at the flexplate when I pull the drive and ch= eck for cracking, but unless I hear otherwise I plan to reuse the flex plat= e. Thanks Steve > On 6 Dec 2020, at 8:58 am, Charlie England ceengland7@gmail.com wrote: >=20 > On 12/5/2020 6:35 PM, Stephen Izett stephen.izett@gmail.com wrote: >> Hi team >>=20 >> Having completed phase #1 testing of the Glasair Super IIRG power by Ren= esis and RD1-C redrive, I=E2=80=99re going to pull the redrive for its 25 h= ourly initial inspection. >>=20 >> Tracy deleted the damper assembly from the last rendition of his design = and I=E2=80=99m considering removing ours by creating a new adapter plate f= rom the existing splined >> part that is currently riveted to the damper and adding some longer bolt= s and spacers. >>=20 >> Has anyone heard anything further in regard to RD receives with the damp= er removed? >> Has Tracy given any further updatess? >> All I have read was after initial tests some years ago. >>=20 >> Cheers >>=20 >> Steve. > Best I remember is that you need either an aluminum or steel racing flywh= eel, to get more mass on the engine side of the system.=C2=A0 IIRC, it's al= so limited to low mass (wood, etc) propellers. The ones he sold had a diffe= rent input shaft, but I think Dave Leonard modified his RD1-C & to use a st= eel racing flywheel which was only slightly heavier than the aluminum versi= on. Search for Dave's posts, if he doesn't chime in. I've been wondering if= Guibo/Rototflex couplers could be a viable alternative to the aluminum pla= te/rubber discs. Probably would weigh more, and definitely cost more. >=20 > Charlie I've got a flexplate from a salvage yard that is cracked (never flown). On = the other hand, I think Tracy had over a thousand hours on his without crac= king, before switching to the RD2. Here's an archived RWS page from the Wayback Machine: https://web.archive.org/web/20121230061959/http://www.rotaryaviation.com/RD= -2C.htm and https://web.archive.org/web/20121230065615/http://www.rotaryaviation.com/fa= q's.htm Charlie | | Virus-free. www.avast.com | ------=_Part_475314_135511535.1607281660452 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Dave, were you running a stock 13B did you P/P it or = any power increasing additions (or subtractions)?
 
Thanks
 
Rich
 
In a message dated 12/6/2020 12:41:30 PM Central Standard Time, flyrotary@l= ancaironline.net writes:
 


On 12/6/2020 10:52 AM, = David Leonard wdl= eonard@gmail.com wrote:
Steve, you are right.  The Issue is cracking og the auto-tranny f= lex plate.  Mine failed entirely.  I highly recommend making the = change sooner rather than later.
 
Dave Leonard

On Sun, Dec 6, 2020, 12:= 48 AM Stephen Izett stephen.izett@gmail.com <flyrotary@lancaironline.net> wrote:
Hi Charlie

I thoug= ht people moved to the race flywheels because the flex plates were cracking= .
I hadn’t heard of the Engine/Drive/Prop needing a flywheel mass= .
I found some info on the forum archive but nothing to draw it all toge= ther.
I’ll have a good look at the flexplate when I pull the drive= and check for cracking, but unless I hear otherwise I plan to reuse the fl= ex plate.

Thanks

Steve






> On 6 D= ec 2020, at 8:58 am, Charlie England ceengland7@gmail.com &l= t;flyrotary@lancaironline.net> wrote:
>
= > On 12/5/2020 6:35 PM, Stephen Izett stephen.izett@gmail.= com wrote:
>> Hi team
>>
>> Having complete= d phase #1 testing of the Glasair Super IIRG power by Renesis and RD1-C red= rive, I’re going to pull the redrive for its 25 hourly initial inspec= tion.
>>
>> Tracy deleted the damper assembly from the l= ast rendition of his design and I’m considering removing ours by crea= ting a new adapter plate from the existing splined
>> part that is= currently riveted to the damper and adding some longer bolts and spacers.<= br>>>
>> Has anyone heard anything further in regard to RD = receives with the damper removed?
>> Has Tracy given any further u= pdatess?
>> All I have read was after initial tests some years ago= .
>>
>> Cheers
>>
>> Steve.
> B= est I remember is that you need either an aluminum or steel racing flywheel= , to get more mass on the engine side of the system.  IIRC, it's also = limited to low mass (wood, etc) propellers. The ones he sold had a differen= t input shaft, but I think Dave Leonard modified his RD1-C & to use a s= teel racing flywheel which was only slightly heavier than the aluminum vers= ion. Search for Dave's posts, if he doesn't chime in. I've been wondering i= f Guibo/Rototflex couplers could be a viable alternative to the aluminum pl= ate/rubber discs. Probably would weigh more, and definitely cost more.
&= gt;
> Charlie
I've got a flexplate from a salvage yard that is cracked (never flown). On = the other hand, I think Tracy had over a thousand hours on his without crac= king, before switching to the RD2.

Here's an archived RWS page from = the Wayback Machine:
https://web.arc= hive.org/web/20121230061959/http://www.rotaryaviation.com/RD-2C.htm
= and
https://web.archive.org/web/2012= 1230065615/http://www.rotaryaviation.com/faq's.htm

Charlie

3D"" Virus-fr= ee. www.avast.com
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