Mystic 185 Twin Turbine Build by Chris "Sir File-a-Lot" Fischer

[ManuelW]

Hello Guys,

after the requests in the HPR 135 - German madness thread I decided to present Christians new build also here on OSE and translate the review.
I hope you enjoy the build, I think its very very well done and deserves respect even if its not a FE boat.

As there might be question: This boat is owned and re-built by Christian Fischer. But we work very close together and I also helped searching and purchasing parts as well as doing design work and CAD crafts....

HPR 185 - TwinTurbine project

Originally the boat was build by Chris Tonn. Beside the paint job he also did the big changes concerning the canopy of the boat. Now it features 3 independent hatches, the side hatches are scaled down from the real Mystic C5000R for the turbines. Then the boat was sold to a guy in the Netherlands.
Christian saw the boat at the annual powerboat meeting in Heilbronn and fell in love with it. As it was for sale a bit later he decided to buy it and in the middle of september last year Christian and I drove to pick it up. Both ways together were about 1530km to drive and it took us the whole day but it was worth the effort.

Basically the boat was RTR except the receiver and the two turbines were at JetCat to be checked and serviced.

Here a picture of Christian and his new beauty after returning home:


dismounting and cleaning

As some of you might already know some of his other boats he invests tons of work in little details and nice hardware of the boat. They call him "Sir File-a-lot" because of the excellent work he did with files and CF-sheets in his HPR 115 with the "2-Face" paint job. So the boat was already built but it was quite clear that he would rebuild many parts.
First of all he dismounted all the parts to clean and polish the bare hull.







one of the first little detail was to put some self-adhesive velvet round the canopy borders

BEFORE

[ManuelW]

AFTER









Here the original RC-Box, the cable harness of these turbines is quite complicated. For each turbine you have (beside the receiver, receiver battery and servo):
-LED board
-turbine ECU
-2S Lipo battery for ECU's
-fuel pump
-2x magnetic valves
-fuel filters
-bunch of cables to conne

[bruiser77]

Hello Manuel, I've been following this build on the powerboat forum using Google translate. Christians work is amazing. Everyone will really enjoy this build. I know I am. Thanks, Bruiser

[ManuelW]

rudder facelift

The original rudder is quite nice but Christian thought there are still a few things to improve. So he disassembled the rudder and built some parts again on his own little milling machine. Its a conventional one and not CNC, the fabricator is Proxxon. For the other parts he decided to polish them to perfect finish. The black screws are M4 and out of Titanium. The cover out of CF-sheet is 0.3mm thick. As its quite small, he pre-drilled the nine holes with 4mm diameter and then used some rolled sanding paper to get them to the precise final diameter of 7mm. Another change was that he changed the normal bushings of the rudder axis to ball-bearings. I think the rest is self-explained by the pictures. If any question arrives, feel free to ask.

ORIGINAL:




Machining new parts:

[ManuelW]

[ManuelW]

OLD vs. NEW


Parts polished and ready for assembling (the special "bling-bling"- factor)

[ManuelW]

Please excuse for posting quite some pictures of the mounted rudder...

[ManuelW]

To protect the rudder from scratches during transport he also sewed a little protection cover for his rudder. As material he used gore tex material from a jacket






The Turbines

A few weeks later the checked and serviced turbines arived back from JetCat. These turbines are the JetCat SPM5 marine turbines, each one can produce around 7kW output power at the shaft. Its a 2-shaft turbine like its used for a TurboProp. The first turbine runs at around 170.000rpm under full load. The generator part can run nearly at the same rpm. The second shaft is connected to a 3-step gearbox with an input of around 170.000rpm and an output shaft which runs around 28.000rpm.

Here some pictures of the babies:

[ManuelW]

So I think thats enough for today, I'll continue tomorrow!

Best regards,
Manuel

[steveo]

awww so cute he has twins

[RaceMechaniX]

Manuel,

Thanks for translating and uploading the postss here. BTW, does Jetcat still produce the SPM5's?

Tyler

[nata2run]

I already wonder, what's next. Lol, I kinda just laugh/smile when I see Christians work. What else can you do.

[ManuelW]

Hi Tyler,

yes JetCat still produces the SPM5 Marine Turbine, at the moment its also the only company I know that still produces a marine turbine. I'd say the system is well developed now and due to increased production numbers they are even available for a lower price now (decided to write lower, as I think "cheaper" is not the right word to be used).

Best regards,
Manuel

[RaceMechaniX]

Thanks Manuel,

I did not see them on the JetCat USA site and wondered if they stopped producing them.

Tyler

[graill]

Thanks Manuel,

I did not see them on the JetCat USA site and wondered if they stopped producing them.

Tyler

More masterful work by Chris. Always a pleasure to see what he comes up with. I think i may need to place an order with him. Grin.

They are making the mod 2's slightly better electronics setup wiring wise, i never liked the cable dangling from the top. I lost the warranty on both of mine due to making new second stage turbines for the tranny but they have stated they will work with me on price when it comes time to service them. Be careful how you mod them. Also if you are going to get a turbine do not use the screen type intakes they use as they are a huuuge restriction and allow heat build up in the engine due to restricted airflow, i use a couple turbo intake K&N filters rated at 50+ for air intake.