Engine stringer bedding

[Pete104]

Got myself involved in replacing the transom wood & now the engine bed in a 1983 Cruisers Inc 22' cuddy.

The transom is under control. The question is in regards to the "engine stringers" or engine bed. Do these have to be fastened with epoxy, PL or peanut butter? Or the like. The original wood was glassed solid to the transom & fully wrapped 24 oz roven the full length of each stringer. 1 layer. Once the wrap was off the stringer came right out. The good 1 came right out, the other we sucked out with the shop vac. There was some residual resin that had drizzled it's way under the wood but nothing else. We can see the red string that was used in the CFM during original lamination. I wouldn't expect to be able to, had they used an epoxy or something.

The engine bed in this particular boat is independent of the actual hull stringers. By about 10" -11".

I've searched & really found nothing about stern drive engine beds. Most everything is fastened to hull stringers or ski boats.

Thanks

 

[Woodonglass]

Re: Engine stringer bedding

I'd recommend bedding the Motor mounts in PB. It's never a good idea to set the wood directly onto the hull. Don't think anyone here on the Forum would advise it.

 

[Pete104]

Re: Engine stringer bedding

OK. Is that so they don't slide around?

 

[mrdjflores]

Re: Engine stringer bedding

+1 for WoG....

multiple reasons....so they dont move around when glassing...so they dont make hardpoint contacts to the hull...

 

[Pete104]

Re: Engine stringer bedding

So just trowel a quarter inch on both the hull & the stringer. Then set in place. Lean on it a little and that's it I take it.

 

[Woodonglass]

Re: Engine stringer bedding

Check the first link in my signature. It has drawings and details.

 

[Pete104]

Re: Engine stringer bedding

Thanks WOG.
The stringers are to be a 1/4" off the hull, bedded in PB. Regardless of the width? The engine stringers are like 5 1/2" wide by 33-34". Looking at your signature, the illustration was like 3/4" or something on end. Not exactly what I'm dealing with, so I just want to be clear.

Thanks

 

[Woodonglass]

Re: Engine stringer bedding

Yep, no matter. Stringers, Bulkheads, Motor Mounts they're all the same and the bedding and glassing technique are the same. This is to avoid Hard Spots in the hull which can cause cracking and checking in the gelcoat and glass.

 

[Pete104]

Re: Engine stringer bedding

Thanks again!

 

[Pete104]

Re: Engine stringer bedding

Each of the stringers are 36" long from the transom. How many dowel rod spacers?

 

[Woodonglass]

Re: Engine stringer bedding

one on each end is sufficient. PB will cure in about 30 mins then you can remove the dowels and finish squishing the remaining PB and making some fillets.