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After I on build saw how well heat insulation foam floated, there also a small boat came had be at me experience the ideas on that.
Beautiful treating gave in the first agency still all what problems.
To cut did not go or badly by the dimensions/cross-section of foam.
It became brokkelig and terribly harsh.
The solution was * cuts * with a warm wire.....maar how comes you to that?
For this the solution was an old its cap such as granny who uses
In this cap a heating element sits in the form of a filament.
Just as along 2e the shopshop shop and for 2 euro I had the cap in which +/- 5 meters wire sit.
For a distance of 50 cm this wire can be warmed up with 12 volts and +/- 2 amps.
The wire I elektrapijp have stretched metal in a piece 5/8.
E1n squares provide with a bit teflonisolatie, so that the clamp does not short-circuit the wire.
Below what photograph of the marsh boat which all what will give.
At cutting must be worked there, however, with a fixed hand and speed.
When the wire goes too slowly the foam will melt away and an irregular oppervlak to make.
Whereas at too rapidly the wire break and definitely will go by rail behind will leave in the foam.
If use slides of the heating wire I 2 strip trespa as a liniaal.
(one can make of course also 2 mallen of trespa and move the heating wire)
The verlijmen do I with watervaste * white * (sneldrogende) adhesive and Pu-(constructie)lijm.
In spite of that the white adhesive normally spoken within 5 minutes would not have be stuck will be the this case at foam.
The foam fume badly from, as a result of which the adhesive is not possible uitharden within the normal time.
For this reason use thus no adhesive which must and decides dry still longer none synthetic glues such as bisonkit ed!!
Pu-lijm are sticking out arranged sometimes what wide gleufjes/breaches finished to fill by its sparkling functioning.
Also I have experienced that sticking out the foam to scour is as a result of which finishing is possible still more nicely.
The result after schilderbeurtje with (jawel) concrete painting!
concrete painting is in a lot of colours available and can even oip colour be produced at the DHZ.
concrete painting solves the foam and is nevertheless rather hard and fills the pores sticking out.
Firstly the foam 1x paint with something diluted concrete painting that there filled precedes become!
Gaatjes and asperities by stoten ed are possible afgeplamuurd become with acrylaatkit.
Hereafter 1 low concrete painting is enough and covers entirely.....spuiten gives a more beautiful result.
Aflakken nicely glowing low can to obtain with e.g. parcel lake on water basis.
What details of the construction of stir.
The question was how get you those things fixed in a material where in fact total is no grip to get.
Aller I have bored gaatjes firstly and there teflonpijpjes in glued scribble of the ailerons to meddle to twist.
These pijpje has been permanently glued with Pu-lijm and is stuck wall.
To scribble of stir I have ringetjes soldered 2 of 3 mm so that do not scribble whole by the boat gone fall.
Lasdraadje RVS of 2 mm concerning ringetjes gone that stir at its place keep and very from practise down.
Scribble has been made of 2 mm brass mow wire and permanently glued with Pu-lijm to the 1 mm dikke triplex stirs.
For traction I want use of 480 and 6 or 8 warrants.
The 8 warrants are from pine boze, since the corrector cannot be cooled and sweltering hot became during doing a trial run.
6 warrants are as a matter of fact enough, the boat went there right vandoor.......over the cellar floor;o)
I still waits for 280 an engine, these something makes more nevertheless goes for a ride and can with less warrants (6) rapidly run.
Many power are not necessary, the boat has little or no capacitance because these * on * water lies by its small weight.
By means of the forum I got still a tip to use an engine from a crumb robber e.g..
Advantage: those lie with hoopjes in the refuse/2e handswikkels and costs virtually nothing.
At coming advantage - these engines uses but 3 warrants what what makes a difference weight.
Also then * low-budget are approached then still more *.
diagram scale has not been signed!
foamblok of 500x200x50 mm
engine support is 3mm triplex and sunk in the foam, Pu-lijm glue 1 cm with.
advancement has been made of the piece scooter cut out.
altitude advancement dependent on altitude servo, for this reason no half-measures.
Undermining rc-ruimte dmv a lot of insnijdingen have been done, whereupon the cube easily from the foam can be hopped.
Cuts not too deep, differently you can start.......gat in floor again are Netherlands the consequence, minimum 1 cm barrage floor.
Should there unexpected a breach nevertheless arise, fills this then with what Pu-lijm.
On the floor of rc-ruimte the blade 1 mm triplex for the strengthening and on which the servo/accumulators take place their.
Rc-ruimte where everything a beetje has been tucked away messily.
After the test speed the used accumulators prove to be nevertheless what on the heavy side.
The boat really does not want make pace, therefore to house for a another parcel.
2e the blade indicates which dimension in the first agency the gebuikte have warrants for dimension tov pennlite.
The new parcel accumulators is * but * 1700 mA, therefore, however, something less vaartijd will be, but much barge.
Unfortunately no photograph still of the maidentrip, was in all ijl the camera forgets.
Used the speedregelaar which without refrigeration easy 80 Ampere manage.
The disadvantage is that he is arranged in fact for minimum 8 warrants, therefore the engine stutters a beetje at halfly * gas *.
From left to right:
The complete clamp, Right the connection for the feeding of 12 volts.
Pay attention just as to the teflon where the bolt runs doorheen, this prevents short circuit.
Left the bolt sits simply bored by steel without heat insulation, this way also the bottom boutje at the right-hand side.
Rest follows report at progress.