[TowerTalk] Difference in TailTwister and Ham 4 torque values

[Roger (K8RI) on TT]

On 10/21/2014 2:46 AM, Ray Benny wrote:

I thought the entire series used the same bolt pattern?

I think you have a lube problem, whether in the rotator or mast bearings?
Could also be a poor electrical connection.

73

Roger (K8RI)

> I have a MA770, 70 ft telescoping mast with a Ham 4 rotator mounted at the
> base. My problem, if I have any winds over, say 10 mph, the Ham 4 stalls
> and will not rotate my Force 12 10m-17m multi element yagi, 24 ft boom, 7.2
> st.. The lack of rotation has been getting worse over the past 6 months. I
> did check the voltage at the control box across the starting cap. It seems
> to be near 24 V. I have also pumped a lot of grease into the lower bearing
> that supports the weight of the rotating mast.
>
> My question, and I have searched, what is the difference in
> starting/running torque between the Ham 4 and TailTwister? At the time the
> MA770 was designed, the Ham 4 was the largest readily available rotator. I
> do have a TailTwister that I could install, but I will have to modify the
> mounting plate hole pattern. Is it worth the effort?
>
> Any other ideas or comments?
>
> Ray,
> N6VR
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk


-- 

73

Roger (K8RI)