Aquadrives on propshaft couplings

[mad_boater]

Has any one fitted aquadrive or simillar anti -vibration units to propshafts. I have been looking at some by Halyards and at £850.00 +vat each I am wondering if they are worth fitting.My set up an aft cabin 35ft grp boat with 2- 150hp-6 cylinder fords on shafts with Borg warner velvet drives. It is connected with 5" metal to metal flanges straight on to the propshafts. Neadless to say the vibration is awfull.These units from halyards have to be glassed in and the shafts cut down, expensive and time consuming if it only makes a marginal difference

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[hlb]

You can get a flexible coupling for much much less than that. I've just had a new one fitted. Cant tell you the cost yet.

<hr width=100% size=1> <font color=blue>It's flog a flag day.<font color=red> Today.<font color=blue>

Haydn

 

[omega2]

Ring A.S.AP, and request price of R&D COUPLINGS, 01502 716993, Or go to website www.asap-supplies.com.

<hr width=100% size=1>J HAMER

 

[JerryHawkins]

Look at R&D web site (http://www.randdmarine.co.uk/flexiblesc.asp) for details. I have one of these and it removed nearly all the vibration I previously had. Are your shafts tapered at engine end? If plain (with clamp-type coupling) may not need them shortened - just move further into coupling to allow for thickness of R&D flexible.

Cheers,

Jerry

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[DavidJ]

Better to solve at source. Prop experts will balance your props or maybe the problem is with the shaft. IMHO vibration dampers are the iceing on the cake and not to be used to dampen out problems.
David

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[Duncan_Hamble]

If your props, cutlass bearings and engine mounts are in good condition and your engine alignment is correct you should not expect much vibration.

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