[TowerTalk] Orion 2800 mast clamp redux

[Ken K6MR]

We always found the spline/sockets at wrecking yards.  At least at that time there wasn’t much call for them and the one yard we used always had a good supply.  And the exact model isn’t critical as long as the spline and socket match.

I like the idea of a new one that’s easy to find.  Have to look at them next time I’m at Tractor Supply.  Tnx!

Ken K6MR

From: Steve Bookout<mailto:steve at nr4m.com>
Sent: Friday, June 25, 2021 10:17
To: towertalk at contesting.com<mailto:towertalk at contesting.com>
Cc: steve at nr4m.com<mailto:steve at nr4m.com>
Subject: Re: [TowerTalk] Orion 2800 mast clamp redux

Along those lines...

I use a male/female 1 3/8 inch (?) splined shaft from agricultural
tractors.  Tractor Supply has a shaft approx 8 inches long that has a
male spline on one end and a female on the other. You can split it and
use both pieces to make a good drive joint.

I would think it would be less expensive and easier to find than a truck
part.

73 de Steve, NR4M

On 6/25/2021 12:02 PM, Ken K6MR wrote:
>
> The best way to couple a mast to a prop motor is to use a spline and socket from a truck driveshaft.  Weld the spline to the bottom of the mast, and make an adapter to attach the socket to the prop motor bevel gear.  Easy to separate if you need to, but guaranteed no slip.
>
> Ken K6MR
>
> tinfo/towertalk
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