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Thanks guys. Appreciated.
As far as the MT I’m looking at, I’ll need to reduce the spinner diameter from 13 inch to 12 inch. Id this likely to present problems or substantive cost?
Steve
> On 24 Oct 2020, at 12:47 am, Charlie England ceengland7@gmail.com <flyrotary@lancaironline.net> wrote:
>
> From Bobby:
>
> Deployed a new exchange server this week and can’t post.
>
>
>
> Flange is SAE-2 And will need new bushings / drive lugs for an MT prop. I don’t remember how many of the bolts are drive lugs.
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> Bobby
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>
> On Fri, Oct 23, 2020 at 11:29 AM Charlie England ceengland7@gmail.com <flyrotary@lancaironline.net> wrote:
> It would be a good idea to verify the bushing outside diameter for that particular model, and also verify whether all 6 bushings can remain in place. Some Hartzell constant speed props only have counterbores for 4 out of the 6 bushings. Perhaps Bobby can tell you whether the MT props do the same thing. For an example, see this link:
> http://mstewart.net/super8/propclock/index.htm
>
> Charlie
>
> On Fri, Oct 23, 2020 at 10:46 AM Stephen Izett stephen.izett@gmail.com <flyrotary@lancaironline.net> wrote:
> Thanks Charlie
>
> I’m interested in a MTV-7-C 183-51 and wondered if it would fit the RD1-C flange.
> My main reason is to increase the diameter out to 72inch to get increased prop tip speed.
> When I ordered the RD1C all these years ago I didn’t understand that Tracy only recommended the C version for larger props.
>
> The MT documentation suggests that a C version has SAE No. 2 mod. bolts 7/16"-20 UNF
> So sounds like you think it could fit with a change to the bushings.
>
> Thanks
>
> Steve
>
>
> > On 23 Oct 2020, at 11:33 pm, Charlie England ceengland7@gmail.com <flyrotary@lancaironline.net> wrote:
> >
> > On 10/23/2020 10:13 AM, Stephen Izett stephen.izett@gmail.com wrote:
> >> Hi Guys
> >>
> >> I’m considering a prop change and wanting to confirm the flange type on the RD1-C
> >> Does anyone know the type of flange? and do most Lycoming 360 series engines have that same bolt pattern and flange dimension?
> >>
> >> Cheers
> >>
> >> Steve Izett
> >> Glasair SIISRG Renesis 4 port RD1-C
> >>
> > Tracy's flange in stock condition uses 3/8" dia bolts. The bushings (drive lugs) are 5/8" in diameter.
> >
> > Most Lyc 360s I'm aware of use 1/2" bolts, and the bushings are 3/4" in diameter. Some Lyc 320s use 7/16" bolts with the same 5/8" bushing diameter; there may be some 360s using 7/16" bolts but I've never seen one.
> >
> > I know that Mark S and Bobby modified their hubs to the larger bushings/bolts, to fit their MT electric props.
> >
> > Bolt circle diameter is the same for all bolt sizes; 320s & 360s.
> >
> > Charlie
> >
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