Model Boat Mayhem - Forum

Dry Dock / Shipyard: Builds & Questions => Pleasure boats, Sports, Race, Power and Leisure Boats: => Topic started by: fastvee on August 28, 2013, 02:20:20 PM

Title: Thunderbolt twin electric build
Post by: fastvee on August 28, 2013, 02:20:20 PM
Hi all!

Just received the new hull From Mart / Waverider mouldings today and started to work with it asap.

I like the general shape of this boat but that many air intakes makes it look a bit silly imo.
-and for electic motors the air cooling is not even needed

So 10minutes after I took the hull of the box this is what I did.

Got the dremel out and cut open 3 of the intakes and filled them with cloth.

Next I will start with the filler job on it and hoping that the end result will be good.


While the resin is curing I need to think a good way of truing the sponsons and finding the filler to do some finishing touches for the seam. -and actually the seam is pretty good compared to what I ve seen on usa made thunderbolts.



-Pate
Title: Re: Thunderbolt twin electric build
Post by: fastvee on August 28, 2013, 07:39:46 PM
Found a leftover piece of carbon and it was just correct size for the hull,   Mart installed one layer of carbon when he built this hull but I guess there is never too much reinforcement if the boat flips at speed so I added 1 more. :-))

It is still curing but here is 1 pic of the process.
Title: Re: Thunderbolt twin electric build
Post by: fastvee on August 29, 2013, 04:17:36 PM
Got the first coat of filler on the hatch, next one will make it perfect.

Pic next to the Navaho and one with 6s lipos to show the available space inside
Title: Re: Thunderbolt twin electric build
Post by: fastvee on September 06, 2013, 05:23:33 PM
Started with the motor mounts. still needs some finishing touches and motor mounting holes .  -8mm carbon so should be plenty strong. Now where is that drill...  -I also made that plate from about 25 layers of cloth and epoxy.
Title: Re: Thunderbolt twin electric build
Post by: derekwarner on September 06, 2013, 10:22:08 PM
fastvee from Finland asks........"Now where is that drill".... should we tell him it is probably with Neil's chuck key  {-) .....Derek
Title: Re: Thunderbolt twin electric build
Post by: martno1fan on September 06, 2013, 11:01:19 PM
Hi Pate funny you should mention motor mounts I just made some for a customer,mine are only 4 mm 3 layers of 650 g carbon and epoxy,plenty strong,used same method for twin rails for rcmk gas motors did those 6 mm ,pretty sure 4 mm is plenty though  :-)) .
Your 8 mm should be indestructable  :o .Heres a pic of his goodies so far.
Hes going with the 5694 1000 kv sss inrunners I sell,twin alien esc 300 amp and 8-10 s lipos so you got competition  ;) .
Mart
Title: Re: Thunderbolt twin electric build
Post by: fastvee on September 06, 2013, 11:53:02 PM
Hi Mart, wow that should fly with thous motors! 

The motors I have planned for this are the 1250kv outrunners and 4250watts each this should not be that slow neither... -I know it is just numbers but both motors combined 8500watts or 11.4 hp sounds plenty.

the 4mm would have been plenty strong for my build also , I first did 3mm mounts and they just looked a bit thin but were strong.

I did the 8mm ones just for outrunner use since they are mounted only at front so no rear support. I actually tried something new, the mounts were 6mm at first but I laminated 1mm sheet on the rough side and few layers of cloth between them to join the pieces wet/wet & make nice smooth surface on both sides.

I also started with servo mount, no pics yet will finish it first but it is something nice  :D
Title: Re: Thunderbolt twin electric build
Post by: martno1fan on September 07, 2013, 01:02:14 PM
To be honest Pate I think a single one of these would be more than enough but twins are just cool  :-)) .Yes good point about the outrunners,ill be making a cradle support for the rear of these big inrunners for him to fit when hes at that stage.
Look forward to seeing your build as it progresses,i hope to start my twin Apache build over the winter,been saying that for 2 years though  %)  lol.
Mart
Title: Re: Thunderbolt twin electric build
Post by: fastvee on September 12, 2013, 03:57:03 PM
I was thinking of better way to secure the lipos then velcro, wanted something good looking and easy to use.

here is what I tried.

First I laminated some carbon cloth to make about 2mm plate, then I took some measurements of 6s lipos and took the rotary tool out(for the carbon not lipo lol) .


The packs will be held using shrink tube(only had tape now, but I have ordered the tubing)  and this allows some cog adjustments also.

This is what they look now, should be strong enough and 1 thumbscrew is all that is needed to remove the pack.
(under the plate is 4mm stainless nut epoxied in place that the thunbscrew threads to)

The thumbscrews were only available purple (not really my fav color...) so I removed the anodizing and polished also.

-Pate
Title: Re: Thunderbolt twin electric build
Post by: w3bby on September 12, 2013, 05:05:18 PM
Neat idea, looks neat and tidy.

Here's a another version from HAB in Sweden (http://www.hab.se/cnc-faste-2-st-ackar-33005000mah-storlek-p-10889-c-613.aspx)
Title: Re: Thunderbolt twin electric build
Post by: martno1fan on September 12, 2013, 09:56:39 PM
Looking good Pate nice idea keep the pics coming  :-)) .
Mart
Title: Re: Thunderbolt twin electric build
Post by: fastvee on September 13, 2013, 10:28:36 AM
Ordered the motors

(http://www.hobbyking.com/hobbyking/store/catalog/SK3-helidrive(5).jpg)
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=42794 (http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=42794)

4250watts -and the color matches with my plans also lol

and Mart, did you notice the stingers telescoping part can be flipped by removing the grubscrews so it can be pulled out and they can be made shorter...
Title: Re: Thunderbolt twin electric build
Post by: martno1fan on September 13, 2013, 03:54:01 PM
Be interesting to see how these motors work out for you,i was looking at these a while back.Havent tried flipping the stingers as you mentioned but good to know if its needed it can be done.
Mart
Title: Re: Thunderbolt twin electric build
Post by: fastvee on September 24, 2013, 06:39:03 PM
Got the motors, they are same size as t600 but a lot stronger magnets.

Got the primer and black base coat on. Not any major issues with the paint so far, but painting with rattle cans and outdoors is a lottery...(bugs,dust ,rain,wind, cold etc crap) Will wait for few days and mask it off and spray the silver and clear next.
 
 Notice the window groove/frame and the 3 air intake holes are missing...
 
 Ordered some decals also, this boat will be known as FBRacing (fat boy racing) ,since I am not that tiny (http://forums.offshoreelectrics.com/images/smilies/set1/nopity.gif)
 
 Still trying to do the colors I planned from the beginning, black and silver paint and orange decals. Will see how this turns out.
Title: Re: Thunderbolt twin electric build
Post by: martno1fan on September 24, 2013, 09:57:23 PM
Coming along nicely,ive got some of these decals on order to see what theyre like,they made them custom size for me,have them coming in 2 sizes to see what works best.They have lots of dif designs too,heres a few samples.
Mart
Title: Re: Thunderbolt twin electric build
Post by: fastvee on September 30, 2013, 09:25:12 PM
Got the silver and clear on + some of the decals. ALOT of wetsanding and polishing done also.
 Still waiting for the orange stripes for separating the silver/black.
 
 Got the servo/esc mount done the servo will be hidden with the escīs -trying to make this really clean looking so no messy wiring etc.
 
 The transom felt a bit thin (did not see any ply?) so I added 2mm carbon "transom doubler". -just to be safe it prolly would have been fine without.
 
 Did the "hatch holding nut mounts"(thats a weird sentence lol) ,and used knurled black nylon nuts(looked for these for days...)  and stainless bolts to do the hatch holding screw thingys.
 
 Also got the couplers and connectors etc small stuff so soon I can install everything.
 
 So it is starting to look like there is a smallish chance that this will be ready for next summer...

And the deck without the 3 air vents I removed looks much longer and better now imo.
 
 -Pate
Title: Re: Thunderbolt twin electric build
Post by: martno1fan on October 01, 2013, 12:23:47 AM
Looks killer Pate nice job,as regards the transom it had 3 layers of glass and two of carbon no need for plywood plus as you didn't require rails and wanted the carbon look I assumed youd leave it carbon,adding the carbon doubler wont hurt though.
Mart
Title: Re: Thunderbolt twin electric build
Post by: fastvee on October 01, 2013, 04:49:04 PM
Hi Mart, yeah I thought that was it.

Not questioning the build quality just making sure this will be bullet or at least  pellet proof when done. :-))


The motor mounts are waiting for my new dremel to arrive  and then the build really starts. I may need anther project for the winter this is going together fast...
Title: Re: Thunderbolt twin electric build
Post by: martno1fan on October 01, 2013, 05:51:26 PM
Pate never thought you were just reassuring you it will be fine hehe.Im just finishing one up I did in carbon Kevlar.I also have a few planned using vinylester resin instead of poly but they will cost more  :} .
Mart
Title: Re: Thunderbolt twin electric build
Post by: gazncaz on October 21, 2013, 05:46:16 PM
Lovely looking boat  :-))
Title: Re: Thunderbolt twin electric build
Post by: fastvee on February 20, 2014, 06:02:34 PM
Been a while since I touched this project, I have 3 other builds going on and kind of lost my motivation when the new paintjob started to crack few weeks after polishing it  <:(

but now I will take a look of this one, leaving the paint stuff to last.

Today I started to fit the mounts, one is on and I need to figure out best way to get the other one to match on other side so I can use same flex cables on both side if I want to change the rotation.

few pics

(https://lh3.googleusercontent.com/-ym5jPRMB6-c/UwY_qV5TC3I/AAAAAAAAAbQ/dOHUc8TXHLk/s912/P1050637.JPG)

(https://lh4.googleusercontent.com/-46Ixn_rrT5c/UwY_rEQd9fI/AAAAAAAAAbY/_VNVY9RlMLI/s912/P1050639.JPG)

The tube angle may look a bit too curved but the shaft turns freely so it should be fine. -and it needs this angle cause I wanted to install motors some distance from bottom so water wont get to them if some liquid finds the way in.

-Pate
Title: Re: Thunderbolt twin electric build
Post by: fastvee on July 17, 2016, 11:27:05 AM
It has been really long since I last worked with this boat, sorry!

I had some great(got married and we have a daughter now)  and bad stuff (home had moisture/mold and had to move few times) happening and simply had not room or time to work with these large hulls.

Now I have room and some time to finish this.

The paint has been removed and the build is going nice speed.
(https://scontent-ams3-1.xx.fbcdn.net/v/t1.0-9/13728949_495535603950487_3073714572214193157_n.jpg?oh=675928bd2156dcb47247262de7338dd6&oe=581F0DBD)


Both motor mounts are on and after the filler/primer is on, I will install all the bits minus hardware on transom and hit the paint again.
(https://scontent-ams3-1.xx.fbcdn.net/v/t1.0-9/13599780_493353164168731_7875765274813620895_n.jpg?oh=e22b139e7b743207cc246fb74ae9083f&oe=583465C3)


Hoping this is done in few weeks, but I have 6 weeks of work starting 15th of next month so the latest this will be done then.

-Pate
Title: Re: Thunderbolt twin electric build
Post by: martno1fan on July 17, 2016, 12:02:35 PM
Welcome back Pate and congrats on the new wife and baby lol.Good to see you back on the cat build its been along time lol.What motors are those mate and what setup are you going with .
Look forward to seeing how shes comes together  mate.
Mart
Title: Re: Thunderbolt twin electric build
Post by: fastvee on July 17, 2016, 12:13:15 PM
Hi Mart! And thanks!

The motors are 8 pole 1250kv outrunners (4250 watts each  %% ) . -Better quality then T600 what I have read,and much stronger magnets.

Escīs are on their way, 2xTurnigy 180A seakings.

Batteries are 2x6S 5300mAh 65C Turnigy bolt(LIHV). 1 pack /motor (should be plenty, over 300A cont. lol)

Will start with tiny 40mm plastic props if they even work lol, to 45,51,57mm and finally  hoping it will work with stainless 5517/3īs when Iīm done.

Hoping to get  100km/h /60mph reliably.
Title: Re: Thunderbolt twin electric build
Post by: martno1fan on July 17, 2016, 12:44:15 PM
Sounds good mate i changed my mind on the large Apache twin and am now going single 5694 /1000 kv on 8 s using 240 amp hv swordfish esc. A friend is using this motor in a 72" deep vee on 8 s and it seems plenty of power but i think he needs to prop down some as hes using a large 70 mm prop lol.
Forgot to say sorry to hear about your paint issues that sounds like something that happened to me with the Apache,i didn't have the patience to remove it and start again so i covered the whole boat with a wrap apart from the deck that i redid yellow .
I also made a new sealable hatch using Plexiglas and ive made a carbon plate to sheath it with for extra strength,it will be held down with usuall pins at front and thumb screws at rear ,hopefully it will be enough to create a seal without using tape but we shall see.
Title: Re: Thunderbolt twin electric build
Post by: fastvee on July 17, 2016, 01:03:38 PM
I did look at your build earlier today.

Looking great!


I will use a window seal foam tape on the cat and m4 bolts to keep the lid on and hoping it is enough to keep the water out. I dont want to tape it shut after doing all this work to get good paint on! -and then risk of pulling the paint off with the tape...

This will have Gulf racing colors when done(allready got the paint, darn expensive to get correct color mixed in spray cans...)

-Pate
Title: Re: Thunderbolt twin electric build
Post by: martno1fan on July 17, 2016, 07:32:50 PM
Yea thats what i used for the seal ,hoping its enough just in case she does flip .
Title: Re: Thunderbolt twin electric build
Post by: fastvee on July 29, 2016, 05:23:26 PM
Small update, 1s color is on
(https://scontent-arn2-1.xx.fbcdn.net/v/t1.0-9/13882235_500266190144095_3705585694549073371_n.jpg?oh=e9422d45788bb3f123150d05ecf3ab99&oe=58267E62)
(https://scontent-arn2-1.xx.fbcdn.net/v/t1.0-9/13882490_500266206810760_5079143239639523266_n.jpg?oh=863595f0c46e035aae2e688480042e07&oe=5815A3B4)
Title: Re: Thunderbolt twin electric build
Post by: fastvee on August 06, 2016, 08:45:13 AM
the not so great update... -the masking tape melted somehow the paint under it... -did everything like instructed by the paint store owner.(other then letting the paint cure 3 days instead of 1 hour he told me... crap. I did manage to fix it 97% pics of that later.

(https://scontent-amt2-1.xx.fbcdn.net/v/t1.0-0/p526x296/13876358_503113763192671_6058867096351412465_n.jpg?oh=2c4b1719e7bbe9a75bcae93f32b7d29a&oe=585CF6D0)
Title: Re: Thunderbolt twin electric build
Post by: martno1fan on August 06, 2016, 01:17:23 PM
That sucks,hope you manage to sort it Pate .
Title: Re: Thunderbolt twin electric build
Post by: fastvee on August 07, 2016, 09:45:25 AM
After wetsanding and clear lacquer,wetsanding and polishing

(https://scontent-amt2-1.xx.fbcdn.net/v/t1.0-9/13932734_503507839819930_4543966324937177059_n.jpg?oh=2e47eb5cdbdcd05c404160d68e03df78&oe=5817AC01)

Looks better but I did not want to clear this because the black dust specs that allways find their way in :( -not too bad but from very close you can see some dust inside the clear.  -but this is ok, this is a speedboat that will get few hits Iīm sure...
Title: Re: Thunderbolt twin electric build
Post by: martno1fan on August 07, 2016, 01:39:18 PM
Looks shiny  :D .
Title: Re: Thunderbolt twin electric build
Post by: fastvee on August 10, 2016, 09:59:42 AM
Color is on, only the hatch has been varnished.

(https://scontent-amt2-1.xx.fbcdn.net/t31.0-8/13913935_504649473039100_8049155648624018500_o.jpg)


More to come soon...
Title: Re: Thunderbolt twin electric build
Post by: martno1fan on August 10, 2016, 01:11:06 PM
Looking good Pate  :-))
Title: Re: Thunderbolt twin electric build
Post by: fastvee on August 11, 2016, 02:20:57 PM
Thanks Mart. Just cant wait to slap the decals on and hit 2k clear on....  %%   the paint shold be done saturday or sunday. Then the assembly begins and hopefully will get this wet in about a week.

-Pate
Title: Re: Thunderbolt twin electric build
Post by: martno1fan on August 11, 2016, 10:39:23 PM
Look forward to seeing her when shes done mate and cant wait to see how she runs  :-)) .
Title: Re: Thunderbolt twin electric build
Post by: fastvee on August 11, 2016, 10:59:57 PM
(https://scontent-arn2-1.xx.fbcdn.net/v/t1.0-0/cp0/e15/q65/p320x320/13912579_505326456304735_8757683300325484154_n.jpg?efg=eyJpIjoiYiJ9&oh=d0458e86668679dfbb5c95a3b6f2b2d6&oe=581076D8)

(https://scontent-arn2-1.xx.fbcdn.net/v/t1.0-0/cp0/e15/q65/p240x240/13886343_505326436304737_5356473466077029488_n.jpg?efg=eyJpIjoiYiJ9&oh=b23430d749a3fb5105752d2d5622134b&oe=5815B2DC)

wetsanded,polishing left to do,then it is hardware install time.
Title: Re: Thunderbolt twin electric build
Post by: martno1fan on August 12, 2016, 08:21:24 AM
She looks great Pate,should buff up nice  :-)) .
Title: Re: Thunderbolt twin electric build
Post by: fastvee on August 17, 2016, 08:23:56 PM
(https://scontent-amt2-1.xx.fbcdn.net/v/t1.0-9/13882604_507756826061698_3007969049675391562_n.jpg?oh=72f643fb5cb30220ceedb3fdd8371ff6&oe=5855F38F)
(https://scontent-amt2-1.xx.fbcdn.net/v/t1.0-9/14068275_507757159394998_6722154138565430308_n.jpg?oh=6869ca551d158abec0e6675eb66d48a3&oe=585EDFFD)

Big boat but there is also alot of stuff inside.

The prop shafts are really long so I needed to make spacers between the props and nuts. -this should not be a problem?
Maiden this weekend if the weather allows.

Still not polished the paint, will do that later.
Title: Re: Thunderbolt twin electric build
Post by: martno1fan on August 18, 2016, 05:27:39 PM
What size props are you using mate ,wouldnt worry too much about the length of that thread ,its because those shafts are made for gas props which are much bigger but as you say use some spacers,you could use some silicone tubing maybe ?.
Title: Re: Thunderbolt twin electric build
Post by: fastvee on August 19, 2016, 06:46:05 PM
The props in pic are 45mm .tested 45 and 51mm props, temps after 1 minute , 25-28c 😃

I guess I can try the 57mm next...

the hatch seal was worst try ever... 20sec and boat was half full with sea.

glad the electrics were fine after ri sing and drying...

https://www.youtube.com/watch?v=8n0-X5J7ppI

 test with 45mm and tAped hatch.

https://www.youtube.com/watch?v=-hI-hWAnuBc
test with 51 and taped hatch. some water was in but nothing bad.



Title: Re: Thunderbolt twin electric build
Post by: martno1fan on August 20, 2016, 11:45:46 AM
Wohoo shes alive  :-)) ,congrats on the maiden .Sorry to hear your hatch seal idea didnt work any idea why ?.
She looks to run well even with those smallish props,good turn of speed and trim seemed spot on congrats .
Title: Re: Thunderbolt twin electric build
Post by: fastvee on August 21, 2016, 10:56:19 AM
i dont know what went wrong with the seal.

but the boat still collects water,looks like ghe stuffing tube leaks .thinking what to do. tried shrink tubing the end but no help.

looks like the flex shaft just sucks water...
Title: Re: Thunderbolt twin electric build
Post by: martno1fan on August 21, 2016, 12:23:57 PM
Try a rubber boot pushrod seal over the end or maybe you can buy and fit two of these ?.

http://www.ebay.co.uk/itm/ROTATING-SHAFT-SEAL-3-16-4-75mm-for-flexishaft-rc-model-boat-brushless-nitro-/391448318191?hash=item5b242350ef:g:wpIAAOSwMmBVpgl~ (http://www.ebay.co.uk/itm/ROTATING-SHAFT-SEAL-3-16-4-75mm-for-flexishaft-rc-model-boat-brushless-nitro-/391448318191?hash=item5b242350ef:g:wpIAAOSwMmBVpgl~)
Title: Re: Thunderbolt twin electric build
Post by: fastvee on August 22, 2016, 05:57:07 PM
thanks Mart,i ordered 1/4 versions of the seal units.

will try some home grown sealing for now,looks like the boating season is soon ending and dont know how long it takes to get the parts.hoping less then a week...
Title: Re: Thunderbolt twin electric build
Post by: fastvee on September 08, 2016, 07:22:45 PM
Video shows yesterdays run first and todays next.

Did try today again with better cog.

https://youtu.be/tdd-e8w3wHg

After few minutes, the motors were really hot(77c after 3 minutes of cooling,forgot the temp gun to shore). Escīs cool 37c and lipos 35c

There was some smoke when I opened the hatch,but it looked like burned oil not electricity.
The new shaft seals looked a bit burned so bearing update is soon to follow (smoke visible on video.)


thinking this needs watercooled motors and bigger props since the escs were cool?  motors are salt water dunked few times so they may be going poof soon.

Gps 93kph not bad imo.
Title: Re: Thunderbolt twin electric build
Post by: martno1fan on September 09, 2016, 08:18:08 AM
Looks to be going well Pate,maybe water cooled mounts will help the motors ,also maybe rig up the oilers on those shaft seals might help too.93 kph or 57 mph is fast considering you didnt really keep the hammer down for long due to conditions,cog more forward will help when its rough,even a little weight added forward when its choppy thats removable for when its flatter would work.
Title: Re: Thunderbolt twin electric build
Post by: fastvee on September 17, 2016, 08:52:02 AM
Last run of the season

https://www.youtube.com/watch?v=veLDws6bc24&feature=youtu.be

51mm plastic props, 76kph
Title: Re: Thunderbolt twin electric build
Post by: martno1fan on September 17, 2016, 01:23:07 PM
Nice video ,she still wants to get airborne maybe a touch down angle on the props needed.Did you change the cog forward yet or not Pate.
Video makes me wanna build one for me lol ,i have two brand new 4092 1600 kv inrunners i could try.
Saw a guy using similar motors in a Conquest cat and she went quite well .
https://www.youtube.com/watch?v=ZQjqpdpdFNI&list=FLBvMrXd-byRavNCBWuCxqHg (https://www.youtube.com/watch?v=ZQjqpdpdFNI&list=FLBvMrXd-byRavNCBWuCxqHg)
Title: Re: Thunderbolt twin electric build
Post by: fastvee on September 27, 2016, 01:05:11 PM
Mart, I did move the batts all the way forward(completely under deck now) ,also removed the rx pack and used the escīs bec so that moved the cog a bit back .

Thinking inward props is again what makes it a bit floaty.

The boat is in winter storage now, next test in the summer 2017!

holy crapola that conquest moves!
Title: Re: Thunderbolt twin electric build
Post by: martno1fan on September 27, 2016, 09:22:09 PM
Yea maybe try the props outwards next season  :-)) .
That Conquest has had me thinking for over a year as i have two 4092 inrunners here and i might try them in the Thunderbolt.
Ive made a promise to myself that next year i will get the FE Apache build done and try and get a cat done too .