Caldercraft Northlight Clyde Puffer.
Anyway, I had sold a boat and a kit out of my stash to supplement my slice of the Christmas budget when a club mate offered to sell me his unbuilt Portgarth tug. I thought about it, but the expense and size of the boat was a little more than I wanted to deal with. That and that brass mast! Well, long story short, after I politely turned down the Portgarth, my buddy said he had a Caldercraft Clyde Puffer he’d part with. It’s and older kit, looks like it’s all there…and the price of entry was about half of a new one. Sold!!
He was very honest about this kit. It’s an older kit, some wood parts machine cut with part numbers inked on, the upper decks are printwood. It’s missing a few nuts and bolts, and the molded hatch cover, but everything else is there , including about a half million white metal fittings, which came carded and shrink wrapped. The fittings are of pretty good quality, better than the last Deans kit I built. The hull had taken a “set” due to lying around for 20 years or so, but some tape in tension and slight heat from a heat gun and an overnight rest cured that. So, it’s time to build!!
First thing I did was to build up my stuffing box. The one in the kit is fine, but I wanted one a little longer and unplated so I could solder on a lube tube. I wanted a good mechanical fit, so instead of soldering on a tube then drilling the stuffing box, I drilled the box first, and selected a brass tube that would just fit in the hole. I pressed it in, making sure I cleared the shaft, and silver soldered it in place. I use a mini grease gun from Pro Boat that will give enough pressure to have grease squeeze out between the ends of the tube and the shaft, so a good mechanical fit and silver solder are a must.
I then cleaned the interior of the hull with a paper towel dampened with lacquer thinner, and gave it a quick sanding once dry. Caldercraft made sure the builder knew that the hull is a polyester resin hull, not epoxyglass, so I wanted to make sure the glues I use would work.Stabilit works well, and I read that epoxy will work with some prep. I made a very small batch of 5 minute and microballoons, and pick a place in the hull to experiment. Once my sample dried I tried to peel it off but it’s on there for good. Cool!! I have Stabilit, epoxy and ca, we’re good!!
I installed the front and aft bulkheads next, I drilled a large hole for the stuffing box in the aft bulkhead before the install. Once I had the aft hole drilled ( and fixed🤣), I was able to move the tube to its proper height. I then cut 2 thin ply scab patches and drilled them to fit the tube. I installed the tube with one patch aft and one forward of the bulkhead. Once I had the shaft where I wanted it, I packed up the tube with scrap, tacked it at the aft of the hull and the bulkhead with ca, and once satisfied with the fit installed the scab patches with a liberal dose of epoxy, sandwiching the tube and bulkhead together. I then filled the aft end with filled epoxy.
I built up a motor mount from 3mm abs sheet and ply, and once everything was lined up, installed the mount and a Zippkits 650kv motor.
I won’t go into too many specifics about the rudder, if you look at the pics you can see it’s a bit of work. The lower skeg is bolted to the hull by 3 screws, those were missing so I used socket headed servo mounting screws, 2 from one side and 1 from the other. I then added the rudder post and rudder, the post has a screw built in that goes thru the hull and is secured by a nut inside the hull, it’s supposed to be joined to the skeg with a small nut and bolt, but I used a brass pin glued in place. It works pretty good! Looks finicky but came out better than I expected.
The last thing I did was to add the aft deck. Now, the plans show servo bearers installed and the servo is mounted to the bottom of the bearers, with the screws coming up from the bottom. Unfortunately once the assembly is glued in place…you’ll never be able to replace the servo without major surgery. What I did was I made spacers to drop the bearers, and once I had that assembly epoxied in place I installed the deck. I can now install the servo at the right height and can replace or service the servo if needed.
That’s all for now. My next steps are the stringers for the hatch, main deck, and fwd deck.
Cash
- GaryLC🇬🇧SilverCaptain·Hi Cash, I am very interested in your puffer build, and thought I would share this with you as an alternative rudder servo arrangement. As the original was chain-driven and this is a bit more convincing, plus you don't have a servo linkage running across the rear decking. At the rate you are progressing, yours will probably be finished before mine which has come to a grinding halt. Regards, Gary.Liked by craigG and AlessandroSPQR and
- Doogle🇬🇧Vice Admiral·Going to be following with interest 😊Liked by GaryLC and Wolle and