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>> Home > Boat Building Blogs > Krick Police Launch
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mdlbt.com/42133
Krick Police Launch Print Booklet
Author: MouldBuilder   Posts: 2   Photos: 15   Subscribers: 1   Views: 430   Responses: 14   |   Most recent posts shown first   (Show oldest first)

mdlbt.com/42583
Seeing the light - Posted: 10th Jun 2018
It has been a busy time at work which means that I have very limited time to build at the moment. All things considered all is going well.
I have started the superstructure. The components are requiring a lot of additional work to fit them. I am glad about this as it is all good experience. My sandpaper and files are glowing due to over use.
I have found a very useful filler at my local model shop made by Red Devil. It is extremely light and sets in a very short time; ten minutes. It says that it can be painted after ten minutes. Don`t think I will test this.
I have fitted the deck and sanded down the hull sides to match. I think the weather is almost good enough to start the painting. I am still a little concerned about this particularly with the use of masking tape. I am worried that the previous layers which are covered by the tape will peel on removal. Can anybody tell me how long to allow paint to dry before applying tape and how long can the tape stay in place. I am using Tamiya tape.
I have decided to illuminate most of the lights and will make a module for flashing the blue light. I have lots of electronic components here as I enjoy making prototype circuits. Unfortunately, my love of making these boards is not matched with a knowledge of exactly how they work so I am sure I will be asking for help with the circuit diagram. I have all the components here.🤓
Well that all for now. I am currently constructing all of the deck items. This I find more difficult due to the manipulation of very small parts having `sausage fingers`. Must buy more tweezers!!😊

Attached Photos - Click To View Large

Response by MouldBuilder on the 21st Jun 2018
Hi Doug.
It is a 1M pot. This is a single turn component.
I also have 5k multi turn, 200k one turn, and 500k 1 turn.
I have loads of resistors. 1,10 and 100uf capacitors.😊
The LED`s are 20mA.
I have been reading the Tug lighting thread. Interesting.
Thanks.
Response by RNinMunich on the 22nd Jun 2018
Hi Peter,
before I do any more example calcs I need to know what flash rate you want and what duty cycle.
For example; 50% duty cycle = equal On and OFF times. Do you want one flash per second or what?
Basically I would say that trim pots more than 100KOhm make adjustments very sensitive and difficult. R2 must be of similar value to the pot to minimise that effect.
I typically use values of 4.7K, 10K and 100K.
Anything more than 1uF with R1 and R2 in the hundreds of kOhms and you'll get a flash period of around 10 seconds or more🤔
Are you still going to use an incandescent bulb 🤔 or an LED?
Cheers, Doug 😎
Response by RNinMunich on the 22nd Jun 2018
You mention LEDs (plural) so how many?
In series or parallel?
😎

mdlbt.com/42134
Krick Police Launch - Posted: 26th May 2018
I have just started to build the Police Launch that I have had for a while. Work commitments have left me with little time lately but hopefully I can get a good run on this one for a while. I hope to finish it by late July which just leaves me enough time to send it to Hungary so that I can test it.
The kit is said to be good for a beginner. This would be good as many years ago I built a Patrol Torpedo Boat which took me five years. I am currently restoring this one as well but I think that will take most of this year to complete.😁
I have started by buying the speed controller. The motor is a 400 brushed. Probably not going to be too difficult to keep up with this one.
The kit itself is not too bad considering the price, but I do feel that the ABS vacuum formed hull could be of a slightly better quality. Also I am finding the ply wood to be rather brittle. Does anybody have an idea for a good filler to use to fill the chips which will take to acrylic paint.
I have prepared the hull and added the propeller shaft and rudder holes. Care taken here to avoid splits in the plastic. Cellotape on both sides before drilling helps.🤓
I have assembled the internal parts which hold the motor, battery and rudder and also fitted the prop shaft.😲
I will start on the deck and superstructure next.
An additional note about the kit. The instructions are reasonable but they are in black and white which is not helpful considering they are photograph based with text. I found a PDF on the web which is in full colour. Why don`t Krick supply this. Surely not that expensive.🤔

Attached Photos - Click To View Large