MHZ Mystic 1850

[triton]

Dear forum mates.
Starting a new project with this big cat. Bought the boundle box that cointains almost everything.
My goal is a moderate speed (c.a. 140kmh) with a stabile setup.
What I have:
Mystic 1850 hull with the equipments from MHZ
2X MGM 40063 ESC
2X Lehner 3060/10 motor
2x12s Lipo
Which makes it interesting that is my first Zero to End built. I have Another cat and mono boats but those are not my build totally.
I have a plan how to start the build but any input and advance I appreciate.

Peter

[triton]

[triton]

Weights
Hull CAF-k 6800g
Lehner 3060 with water jacket 1535g / piece
Esc 585g/piece

[vvviivvv]

Hi, I have a similar sized hull - little narrower but still 1.85m long, maybe also a little lighter

I have 3060/6 in star so 25rpm less / volt than you so somewhat similar

It runs very stable X465 cut to 62mm at 158km/h I borrowed friends bigger Octura and seemed to run faster but GPS came back with a 0 unfortunately…

Have experimented with ABC 2515 but not had the proper weather yet. Boat will go for paint over next week or 2 and then back to testing.

I run 14S 5000mah packs :)

[Alfa Spirit]

Only 2 x 12S?

[triton]

vvviivvv
I would be wery happy 158km/h. How you did the 14s?
Alfa Spirit
Originally yes 2x 12s 9500mah cnhl. Can that be enought?

[vvviivvv]

Hi, using 2x 7S 5000mah SLS quantum 65c packs. Edit - 2 per side so 4 7s packs in total.

https://www.stefansliposhop.de/en/ba...30c::1632.html

I have no experience with CNHL but know SLS are very good cells.

Originally they were 14s stick packs but changed to butterfly to reduce cable length.

[vvviivvv]

I am running this, on Lehner 3040, 700kv 12 Lipo - and it's heavy. haven't GPS'd but I would say 70-80mph without going silly on the propellors.

Length is approx 1.7m

[triton]

Thank you the quick response vvviivvv.
Really like this skater. As I see you need too a Big car for equipments. What is the weight?
I will check the link. I know SLS but dont have experience with it. I use cnhl 120c 2x10s in my H&M agitator xl without problems.
I will try this type with Mystic 185

[koen]

CNHL packs are not bad (i start using them now did use them twice but looks good)but if you use the 120c packs go for the 8mm connectors then you have a 8awg cable ,you need them with this big hull and motors and for the best connectors LHM 6mm are the very best in the business

[vvviivvv]

Hi Triton,

I will try and get a weight for the skater today, my 5008 is at the body shop so will be a week or two until I get it back.

[vvviivvv]

Hi skater is 15.8kg rtr

[triton]

Thanks the input. I use 8mm connectors on all of my batteries.

[triton]

Hi
Thanks.

[triton]

There was a little work today.

[triton]

[triton]

[triton]

I must to make a little spacer on lathe. I did not know put closer the bracket to the transom. The inside carbon layer is too wavy. What you think guys is this a problem?

[vvviivvv]

Never used a MHZ drive sorry,

only WD200 / HPR (which may of even been produced by Wd200 if my memory is correct at one point?)

[triton]

Thanks the response vvviivvv.
I will make a spacer from alu or teflon for safety's sake.

[Silver954]

Are you saying inside your up against the thickness of the hull? So the insert is not lining up?

[triton]

Hi Silver
Yes the inside layer is wavy and the insert is not lining up.
The outside surface and the inside surface is not parallel. Tried with Dremel but there is not enought space inside.
Will try to make a photo.

[Silver954]

I made a similar mistake on a first build. Too close to the edge and not accounting for the hull thickness + the extra corner inside.

You will have to start elongating the hole away from the edge, probably 5+mm more until the insert fits inside. The hole will end up open on one end, but that can be backfilled with epoxy.
Just a heads up, build one side at a time so you are sure everything works before attempting the other.
Once you have a few hulls built under your belt, you can do both sides at the same time.

[triton]

Thanks the reply Silver
With a little mods the insert is on its place.
If I think correctly the lenght of the driver is determines the place of the parts. So the driwer would be a bit longer. Because with this measures it is really close to the inside corners where the layers not soo straight.

[triton]

Little work today and the drive perfectly parallel.

[triton]

[triton]

[Silver954]

The drives on these usually run negative angles, how did the inside work out?

[triton]

Just a bit trimming the corners and made an angle on the edges. That was enought. I wiil drill out the threads from insert and use a 4mm screws with nut.
Can adjust a little negativ angle:)
Next step is to place the motor mount. Is there a rule for the right positions?

[triton]

A little forward.
Started to build in the flexible drives and the motor mount. Meanwhile arrived the battery.
This will be the first test with this type. 9500mah 90c would be good. I have really good experience with cnhl 120c batteries in my other cat.
I have opportunity to choose between three type of Lehners.
3040/10 12s
3060/10 12s
3060/7 10s-12s
What you think guys? I prefer the 3rd version contrary to the original notion.