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Old 07-04-2013, 11:29   #1
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Blitz diff steering

I have just purchased a project boat which has a steering device which is new to me - see attached pics- the PO has placed a differential from a Blitz truck bolted onto the rudder flange (inside the hull obviously) and had a chain sprocket on the drive shaft which was turned by a hydraulic pump (moved manually by helm and by autopilot.

An experienced boat-builder tells me that the arrangement is very reliable and fail-proof but it is very heavy and I am wondering if I should replace it with the usual hydraulically driven quadrant (I have acquired a spare quadrant recently). Is anyone familiar with this arrangement and prepared to offer advice one way or other?

The diff has a sort of loosely-attached arm with sprocket and I am uncertain as to its function
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Old 07-04-2013, 11:40   #2
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Re: Blitz diff steering

Quote:
Originally Posted by stillbuilding View Post
I have just purchased a project boat which has a steering device which is new to me - see attached pics- the PO has placed a differential from a Blitz truck bolted onto the rudder flange (inside the hull obviously) and had a chain sprocket on the drive shaft which was turned by a hydraulic pump (moved manually by helm and by autopilot.

An experienced boat-builder tells me that the arrangement is very reliable and fail-proof but it is very heavy and I am wondering if I should replace it with the usual hydraulically driven quadrant (I have acquired a spare quadrant recently). Is anyone familiar with this arrangement and prepared to offer advice one way or other?

The diff has a sort of loosely-attached arm with sprocket and I am uncertain as to its function
very common on bruce roberts steel boats,see his build your own book
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Old 07-04-2013, 11:52   #3
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Might be better with pic
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Old 07-04-2013, 12:11   #4
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Re: Blitz diff steering

if reliable, keep it!
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