Model Boat Mayhem

Technical, Techniques, Hints, and Tips => Engineering Techniques and Materials. => Topic started by: rnli12 on November 17, 2019, 10:14:47 am

Title: Ham class - rubbing strake - ideas
Post by: rnli12 on November 17, 2019, 10:14:47 am

Hi,
Been wondering the best option to manufacture a rubbing strake for a HAM class as per the picture, any ideas?
Runs nearly the whole length of the hull.
Rich

Title: Re: Ham class - rubbing strake - ideas
Post by: gingyer on November 17, 2019, 10:22:10 am

you do get 1mtr lengths of last shapes that will do it.

Title: Re: Ham class - rubbing strake - ideas
Post by: tigertiger on November 17, 2019, 11:18:02 am

A softwood plank can bend in both directions. I would start at the bow, having shaped the front end of the rubbing strake. Pin and glue the first few inches and let it dry. Then the next few inches, dry, repeat. Finally trim to length, shape and glue the stern end. I am sure that there are other ways

Title: Re: Ham class - rubbing strake - ideas
Post by: chas on November 17, 2019, 12:36:54 pm

I did something similar quite a while ago, pretty much as Tiger said. I used mahogany mouldings from a diy store. The only thing I did different was that after steaming and shaping the wood, I let it dry and then sanded and sealed the wood before glueing it to the hull. This was in case I was heavy handed when sanding the strip after glueing it on, I might have left sanding gouges on the hull side. That was another mistake I once made.
Chas

Title: Re: Ham class - rubbing strake - ideas
Post by: coch y bonddu on November 17, 2019, 12:47:24 pm

What you should really use and is in fact far far superior to pine which in fact has a tendancy to crack is Obeche....this is so so easy to use nad work and WILL bend very easily...just use dit this morning in fact on some stringers on a Raf Rescue Launch when in FACT i grabbed some pine ramin by mistake and it split halfway round the chine...guess what Obeche didnt.....Worked for Me




Dave

Title: Re: Ham class - rubbing strake - ideas
Post by: rnli12 on November 17, 2019, 03:03:00 pm

Thank you for your replies, I worked with obeche many moons ago, where would you get that now in a half moon?

Title: Re: Ham class - rubbing strake - ideas
Post by: coch y bonddu on November 17, 2019, 03:36:47 pm

Try Ebay Obeche is being sold on there...if it is not available there as a half moon then sorry to say this but start sanding


Dave

Title: Re: Ham class - rubbing strake - ideas
Post by: Umi_Ryuzuki on November 17, 2019, 05:53:14 pm

Run both sides of a board edge with a 1/4 round router blade, then cut the half round away using a table saw.
Or use a sander to accomplish the same half round profile, and then again, use the table saw to cut it away from your board.
.
 :-))
Depending on the dimension, Raboesh, Evergreen, or Plastruct make half round stock in plastic.
.

Title: Re: Ham class - rubbing strake - ideas
Post by: ether823 on January 11, 2021, 07:38:21 pm

Where would I get some plans for a Ham class mine sweeper/hunter

Title: Re: Ham class - rubbing strake - ideas
Post by: rnli12 on January 11, 2021, 08:35:29 pm

The only place I remember is MTB Hulls based in Gibraltar http://www.mtbhulls.co.uk/

Title: Re: Ham class - rubbing strake - ideas
Post by: mudway on January 11, 2021, 09:59:56 pm

Christian definitely does a 1/72 scale Ham.

Title: Re: Ham class - rubbing strake - ideas
Post by: ether823 on January 12, 2021, 10:17:14 am

Thanks, ive looked on the site and the hull is 1/35 scale

Title: Re: Ham class - rubbing strake - ideas
Post by: rnli12 on January 12, 2021, 10:40:13 am

He may do a different scale for you, can but ask  %%