- #Transom protector for outboard mounting wood runabout how to
- #Transom protector for outboard mounting wood runabout cracked
- #Transom protector for outboard mounting wood runabout series
Provided there are no other factors affecting the readings for example anti-foul coatings, metal, residue salt:Ģ0-30% – Transom has deteriorated and is letting water in What percentage of moisture is too high for a wet timber cored transom? For instance it’s not uncommon to find the water has tracked further into the stringer system (if timber cored too), compromising the hull further and adding additional costs. On a larger boat, you could be looking anywhere from $5000-$15,000. It’s important to remember that any major transom work is going to require the motor removed, and the hull taken back to bare to allow access to cutting the entire timber core section out (without damaging the outer skin). On a small outboard driven boat with easy access, you may be looking around $4000-$6000. How much does it cost to replace a transom? Chris Austin from FibreFinish has a good article about it here. Ultimately, the most complete and thorough repair to a transom is a transom replacement. However these spot repairs should be noted to be a repair of temporary nature, as the integrity of the remainder of the transom is unknown. Sterndrive or anode mounting holes could be over bored to eliminate areas of wet, corefilled and re-glassed. This could include core samples to be extracted and examined, to various areas of the transom to determine the extent of moisture spread. The decision on whether a transom can be repaired should be decided by a shipwright or boat builder willing to complete and warrant the work. As a result, the migration of this water causes timber core shredding, further areas of delamination and eventually an irreversible complete core failure and the entire transom must be replaced. This is known as water migration and hydraulic erosion. In addition, this pushes water with extreme pressures further into the transom. If you can imagine, with every gear change, and the boat thrusting forward and aft every time you speed up and slow down, the water between these layers has a hydraulic effect. Yes, once water has entered a timber-cored transom it travels between these layers that create the integrity of your transom.
#Transom protector for outboard mounting wood runabout cracked
Engine mounting bolt showing cracked and compressed transom Cracked transom Exposed rotten transom coring Elevated moisture readings next to exposed transom coring Compressed transom bolt Rust stain below engine mount bolt, indicating wet transom Does it matter that there is water in the transom?
#Transom protector for outboard mounting wood runabout series
These are a series of indicators we look out for at BoatBuy when completing a Pre-Purchase Inspection. Remove a screw an observe for corrosion and water entry to the transom.
Elevated moisture readings in a particular area (water, salt, metals and ablative coatings can interfere with the accuracy of moisture meter testing, results should be achieved on a dry transom and from the inside wherever possible).An audibly tinny (delamination) note when performing a percussion test of a transom.An audibly dull note and feeling a lack of rebound when doing a percussion test of a transom.Gelcoat cracks around upper transom and splash well corners (suggests compromised integrity and flexing to the transom).Visible compression or cracks noted to an inner transom around the sterndrive transom assembly.
Visible compression of the transom where mounting bolts secure an outboard.Rust/brown stains below screws or bolts.Some telltale signs your transom has been affected by water ingress and needs attention could include:
#Transom protector for outboard mounting wood runabout how to
Cracking to a wet transom How to determine if my transom is wet?
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