Hello all,
Been a busy time,
So, after machining the Stern end cap up and getting to be a tight fit with "O" rings all I needed to do was to assemble the unit. This is pretty simple as the parts are at hand. All the cast pieces done, just some screws in and some silicon in place. Take the two motors and their respective 2.6mm bolts. push through with shaft extension and then bolt into place.
After this, I assemble the shaft support housings, These comprise of 5 parts mostly held together with Silicon and may be a drop of superglue. So I take an Oilite bush. I don't know Why I haven't used these before, they are fantastic. I then push this inside the cast inner seal support. Get some grey silicon onto the outside of the Seal support and press it up inside the outer ring. Press these parts up until they are just below the surface of the rim. This will make room for the u-cup seal.
I also needed to drill out the two holes on the sides of the flange where the Sheet metal plate will be affixed. At the same time I have also made up the push rod seals. The bent over push rods just make it easier to push in and out. These seals are glued in with Silicon.
An assembled motor shaft support. The base of the support meets the surface of the end cap with a rim of Silicon. The U-cup seal has been seated and then I paste a generous lathering of Silicon, making sure that it covers the outer rim of the U cup seal. Then I press down the 'shaft support housing' which is probably not the best name for it as it sounds like it does more work than it actually does. This cap simply keeps the silicon in and makes it look neat.
Hey presto, back end done. Dunk it in the water and find no leaks... happy..
Now I have to repeat this process all over again with the front End cap. YAY...
I started the process of molding the front end cap around the same time as the Stern end cap. But for the sake of clarity thought that I would show the development one after the other. I steill had to resolve how to mark out the pump mounting bracket that would attache to the front of the end cap. This pump bracket will be optional, but I one the less wanted to work out how to mark it onto the end cap in such away that would not be too obtrusive to the design is not needed but would also show exactly where to glue it if needed. I would either do this in the workshop or leave it in the kit for the customer if they want to do it.
Initially I had a go at scribing the outline on the front of the end cap, but whilst doing so the words of HWSNBN haunted me about such endeavours.... I then decided on a raised styrene section slightly smaller in area that the molded bracket so that the bracket would fit over the area. Subtle but effective. That's what I wanted... a bit like HWSNBN really... At the front can be seen the renshape profile of the bracket. The back has been hollowed out to make way for a 4mm stainless bolt that will be embedded pointing forward to take the clamp at the front.
Here you can see the final finish and shape of the styrene profile for the bracket to mount onto. Just like the previous end cap, Play- Doh is awesome for separating the mold halves with holes and the like. I then press a light layer of Play Doh all over the outer face before face planting it to the base of the plywood molding board. The large holes are for the Electrical conduits and the smaller ones the Pump silicon lines for in and out.
Press a little bit of Play-Doh into the hols in the outer tray supports, or you could pour the silicon and find that the master wont come out as its held by siliocn passing through the holes or maybe the silicon
wont make it that far because of the trapped bit of air in the middle...
Ok, Enough for now, back to writing up the instruction manual. This thing is going to be a door stopper......
Comments, thoughts..
David H
Been a busy time,
So, after machining the Stern end cap up and getting to be a tight fit with "O" rings all I needed to do was to assemble the unit. This is pretty simple as the parts are at hand. All the cast pieces done, just some screws in and some silicon in place. Take the two motors and their respective 2.6mm bolts. push through with shaft extension and then bolt into place.
After this, I assemble the shaft support housings, These comprise of 5 parts mostly held together with Silicon and may be a drop of superglue. So I take an Oilite bush. I don't know Why I haven't used these before, they are fantastic. I then push this inside the cast inner seal support. Get some grey silicon onto the outside of the Seal support and press it up inside the outer ring. Press these parts up until they are just below the surface of the rim. This will make room for the u-cup seal.
I also needed to drill out the two holes on the sides of the flange where the Sheet metal plate will be affixed. At the same time I have also made up the push rod seals. The bent over push rods just make it easier to push in and out. These seals are glued in with Silicon.
An assembled motor shaft support. The base of the support meets the surface of the end cap with a rim of Silicon. The U-cup seal has been seated and then I paste a generous lathering of Silicon, making sure that it covers the outer rim of the U cup seal. Then I press down the 'shaft support housing' which is probably not the best name for it as it sounds like it does more work than it actually does. This cap simply keeps the silicon in and makes it look neat.
Hey presto, back end done. Dunk it in the water and find no leaks... happy..
Now I have to repeat this process all over again with the front End cap. YAY...
I started the process of molding the front end cap around the same time as the Stern end cap. But for the sake of clarity thought that I would show the development one after the other. I steill had to resolve how to mark out the pump mounting bracket that would attache to the front of the end cap. This pump bracket will be optional, but I one the less wanted to work out how to mark it onto the end cap in such away that would not be too obtrusive to the design is not needed but would also show exactly where to glue it if needed. I would either do this in the workshop or leave it in the kit for the customer if they want to do it.
Initially I had a go at scribing the outline on the front of the end cap, but whilst doing so the words of HWSNBN haunted me about such endeavours.... I then decided on a raised styrene section slightly smaller in area that the molded bracket so that the bracket would fit over the area. Subtle but effective. That's what I wanted... a bit like HWSNBN really... At the front can be seen the renshape profile of the bracket. The back has been hollowed out to make way for a 4mm stainless bolt that will be embedded pointing forward to take the clamp at the front.
Here you can see the final finish and shape of the styrene profile for the bracket to mount onto. Just like the previous end cap, Play- Doh is awesome for separating the mold halves with holes and the like. I then press a light layer of Play Doh all over the outer face before face planting it to the base of the plywood molding board. The large holes are for the Electrical conduits and the smaller ones the Pump silicon lines for in and out.
Press a little bit of Play-Doh into the hols in the outer tray supports, or you could pour the silicon and find that the master wont come out as its held by siliocn passing through the holes or maybe the silicon
wont make it that far because of the trapped bit of air in the middle...
Ok, Enough for now, back to writing up the instruction manual. This thing is going to be a door stopper......
Comments, thoughts..
David H
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