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Jun 21, 2019, 04:20 PM
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Alfa Twin Spar's Avatar
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Great! Motors are ready, it' s time to cut the flex shafts. I made a custom twin motor mount, distance between motor shafts is the same than prop shafts.

Dr Mad Thrust 2960 - 2200kv - 1600 watts


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Jul 11, 2019, 12:24 AM
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Alfa Twin Spar's Avatar
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Here is the progress on the Twin Smash Shark, I have to adjust an glue copper tubes with teflons.

The COG is near the black dots on the top, where should you install the SeaKing ESCs?




I use different size of batteries, 2 x 4S (3300mAh each) in parallel and 1 x 4S (8000mAh), may be I will install the controllers next to the motors at the bottom of the hull, not on the sides.


Last edited by Alfa Twin Spar; Jul 12, 2019 at 05:21 AM.
Jul 11, 2019, 05:10 AM
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Apache Kemosabi's Avatar
You say the COG is where the dots are so where were the esc,s when you worked out the cog , put them so she balances where she needs to be also dont forget to account for the hatch as cog will change drastically when you stick that on . Good luck finding a perfect cog running twins in that small hull its not going to be easy .
Jul 11, 2019, 01:38 PM
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Alfa Twin Spar's Avatar
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The COG at 30% is a very good start point.

With the stingers adjusted at 0 - neutral the position of the batteries is enough for a very good setup

Jul 12, 2019, 05:25 AM
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Alfa Twin Spar's Avatar
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I want to buy some propellers for the twin mono, what size do you suggest ?

The setup is not a RPM Monster, 4S and 2200kv, 32650 rpm unload.
Jul 12, 2019, 01:14 PM
RELAX. You'll live longer
785boats's Avatar
A pair of 440/3 blade props is where I would start If it were mine.
Jul 13, 2019, 09:12 AM
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Alfa Twin Spar's Avatar
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Quote:
Originally Posted by 785boats
A pair of 440/3 blade props is where I would start If it were mine.
Thanks, do you know those propellers ?

https://fr.aliexpress.com/item/32860...3da26c37XArg2P


Jul 13, 2019, 09:23 AM
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Quote:
Originally Posted by Alfa Twin Spar
Thanks, do you know those propellers ?

https://fr.aliexpress.com/item/32860...3da26c37XArg2P


Hi Alfa,

I already bought this store (TILKIEA MODEL Store) very good, but propeller I prefer these here (TFL):

https://pt.aliexpress.com/item/32875...36877c83xb07FR

I already bought a lot in this store (HobbyWing Model Store) the seller is very cool, including always makes a discount on the price. They are all original TFL products.
Jul 13, 2019, 03:21 PM
RELAX. You'll live longer
785boats's Avatar
They are the same props .
TFL make them & sell them.
Tilkiea is a hobby store that sells a lot of TFL products, including the props.

They are good props I use them on some of my race boats.
Jul 15, 2019, 04:44 AM
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Alfa Twin Spar's Avatar
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Yes, TFL and Tilkiea propellers are the same, I received an order


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