talonxracer
Well-Known Member
- Joined
- Sep 10, 2005
- Messages
- 252
I decided I needed a tunnel for the UL1 motor I finally nabbed for a P-spec boat, and since there are no more kit's available I decided to scratch build one. I used a conglomeration of ideas for the build borrowed from my Nemesis, Villian S1, and my Drifter L cat. It has 29.5" sponsons and 6.75" wide tunnel. I will call it The Barracuda...
I drew out the sponson formers and keelsons directly on the wood and then went to town cutting and sanding. I used a 1/16" carbon plate for the last 8" of the sponson ride surface in a similar fashion to my Nemesis.
Here are the sponsons laid out to get an idea of the center section, with the 1/8" liteply airfoil end formers.
And here is the center section almost all cut out and pre-fitted, 1/16" bottom sheet, 2x 1/4" aircraft ply transom, 1/8" liteply doublers, 1/8"sq spruce airfoil spars(ladder looking pieces), 1/16" ply radio/battery box sides and 1/8" ply radiobox front former and 3/8" sq hardwood nose, she will have 1/32" top sheeting.
spoonefcrx laid up the cowl for it this week.
and here is a pic with the Sponsons laid out with the center section.
I have the center section glued up and the stringers sanded down to fit the top decking, The sponsons are have two ultra thin coats of 105/207 applied to to the ride surfaces to seal them. The top of the sponsns will get a second coat today and Keelson sides will be coated after final glueing to the center section. I apply the 105/207 with a very fine foam rubber roller so that it is ultra thin and very uniform. The first coat is almost completely absorbed by the wood and the second coat makes it glas smooth.
A overhead view
from the bow,
And the stern,
***update***
Here is the cowl I got from spoonefcrx, fitted to the airfoil along with a coat of primer. Also included is the prototype outboard cowling plug I made yesterday to get an idea of how it would look...
I drew out the sponson formers and keelsons directly on the wood and then went to town cutting and sanding. I used a 1/16" carbon plate for the last 8" of the sponson ride surface in a similar fashion to my Nemesis.
Here are the sponsons laid out to get an idea of the center section, with the 1/8" liteply airfoil end formers.
And here is the center section almost all cut out and pre-fitted, 1/16" bottom sheet, 2x 1/4" aircraft ply transom, 1/8" liteply doublers, 1/8"sq spruce airfoil spars(ladder looking pieces), 1/16" ply radio/battery box sides and 1/8" ply radiobox front former and 3/8" sq hardwood nose, she will have 1/32" top sheeting.
spoonefcrx laid up the cowl for it this week.
and here is a pic with the Sponsons laid out with the center section.
I have the center section glued up and the stringers sanded down to fit the top decking, The sponsons are have two ultra thin coats of 105/207 applied to to the ride surfaces to seal them. The top of the sponsns will get a second coat today and Keelson sides will be coated after final glueing to the center section. I apply the 105/207 with a very fine foam rubber roller so that it is ultra thin and very uniform. The first coat is almost completely absorbed by the wood and the second coat makes it glas smooth.
A overhead view
from the bow,
And the stern,
***update***
Here is the cowl I got from spoonefcrx, fitted to the airfoil along with a coat of primer. Also included is the prototype outboard cowling plug I made yesterday to get an idea of how it would look...
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