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View Full Version : NEW FASTECH!!! :help:



p.swiggs
11-05-2009, 09:24 PM
hey guys,i just got my fastech and wanted to here some helpful ideas of doin some stock tweakin to make the boat perform,handle,and maybe get a little more speed out of it?

any answers?:ohmy:

Doby
11-05-2009, 09:56 PM
Have you run it yet?

p.swiggs
11-05-2009, 11:31 PM
naw will in a few days when i recieve it. i know its kinda dumb to ask the question but i just wanted a few details

LiPo Power
11-06-2009, 12:00 AM
naw will in a few days when i recieve it. i know its kinda dumb to ask the question but i just wanted a few details

...check this out....

http://forums.offshoreelectrics.com/showthread.php?t=8714

http://forums.offshoreelectrics.com/showthread.php?t=8238

http://forums.offshoreelectrics.com/showthread.php?t=8314

LiPo Power
11-06-2009, 12:03 AM
naw will in a few days when i recieve it. i know its kinda dumb to ask the question but i just wanted a few details

Please let us know how it is after your first run....

Jesse J
11-06-2009, 10:35 AM
Here's a couple things I did to LipoPower's after I bought it from him:
http://forums.offshoreelectrics.com/showthread.php?t=10847

Reckon I should have the thread moved here...

p.swiggs
11-09-2009, 06:44 PM
http://www.hobbycity.com/hobbycity/store/uh_viewitem.asp?idproduct=9172
http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=9514

which one would be better?
would the 30c be alot better then 20c?
any other packs recomended?

Jesse J
11-09-2009, 07:01 PM
with that motor I doubt you would EVER notice the difference. That motor sips on the batts, very low amperage draw. I am super duper happy with my 20C $25 Rhino batts from hobbyking.

p.swiggs
11-10-2009, 01:12 AM
is yours the 4900mah?
could i ever run a single 4s if i made a special connector that leads to one plug?

so if i go two of the 20c, it wouldnt be a diff. from the two 30c batteries since the motor doesnt take much of the batt.

p.swiggs
11-12-2009, 12:49 AM
anyone? respond?

Jesse J
11-12-2009, 08:55 AM
I would use two 4S in parallel, you need the weight since you are using lipos - boat was designed for NIMHs and 1 4S is about same weight as 1 6cell pack. I ALWAYS modify the leads coming out of the ESC to one - either deans or 5.5 mm plugs to the batteries. This way if you want to run 1 or 2 you just plug it in or use a Y adapter, respectively.

Mine were 4800 - 5000 mah, not less than 4500mah though.

p.swiggs
11-12-2009, 08:53 PM
ok i got it.. what does parralel mean to is it like the wiring or what?

LiPo Power
11-12-2009, 10:32 PM
ok i got it.. what does parralel mean to is it like the wiring or what?

this is it, read please...

http://www.offshoreelectrics.com/info-pages/running-batterie.php

p.swiggs
11-12-2009, 11:30 PM
i kind of get that. what would you recommend for the fastech?
would one 5s 20c 5000mah work if i i connected a Y connector?

LiPo Power
11-13-2009, 01:08 PM
i kind of get that. what would you recommend for the fastech?
would one 5s 20c 5000mah work if i i connected a Y connector?

Why dont you just run 2 lipos 2s each using stock configuration that will give you 14.8V?

p.swiggs
11-13-2009, 05:58 PM
yeah i could. i was just wondering what my options would be.

Jesse J
11-14-2009, 05:40 PM
I have run 5S, but in parallel... you need to balance out the boat. If you go 1 5S where do you put it? This is what I was trying to explain earlier. Why not try 2S x 2 (4S1P) as Robert says and if you want to go higher voltage, swap out one of the 2S for a 3S (of same mah, c rating and preferably brand), this way you have flexibility. When going higher voltage than 4S/12cells, you should probably prop back to 42mm.

p.swiggs
11-15-2009, 06:48 PM
oh ok i got it now. if i did this would i have to change the wiring of anything from series to parallel

LiPo Power
11-15-2009, 07:19 PM
oh ok i got it now. if i did this would i have to change the wiring of anything from series to parallel

...yes you would, check here for details..

http://www.offshoreelectrics.com/info-pages/running-batterie.php

p.swiggs
11-15-2009, 10:39 PM
yeah i saw that u posted that up top. do u have any pics of what it would look like?

Jesse J
11-15-2009, 11:09 PM
actually the diagrams tell the story. Here's what i did:

1) take a big pair of diagonal side cutters and clip the battery wires coming out of the ESC about 2"
2) solder on 5.5 mm bullets (male on the positive and female on the negative - that's my convention)
3) make a parallel adapter - 2 Y adapters. 1 where two males go to one female and the other where two females go to one male.
4) plug in the adapters to the ESC and then batteries to the adapters.
5) give boat a toss and grin big.

p.swiggs
11-17-2009, 09:13 PM
finally got my boat and set it up tonight..YAY!! shipping took for ever. but now i have recieved so much helpful info from you GREAT guys i can strt doing some tweaking. i still wanna run though all stock to see how it is.

LiPo Power
11-18-2009, 12:26 AM
finally got my boat and set it up tonight..YAY!! shipping took for ever. but now i have recieved so much helpful info from you GREAT guys i can strt doing some tweaking. i still wanna run though all stock to see how it is.

make sure to use good tape to seal your hatch and spent some extra time in corners of it, you need to keep your boat dry inside. Oooo, if your boat will be too heavy front, too wet ride, cut the battery trays such a way that you can move your lipos back a little. That will help in tweeking it.... Lovely boat for sure...
We need to see pictures please.....
Robert

p.swiggs
11-18-2009, 01:29 AM
thanks for the heads up. i will be going soon i just need to grease the shaft and ill be ready to go!. I was also wondering where i could get a LIPO programming card?

LiPo Power
11-18-2009, 01:28 PM
thanks for the heads up. i will be going soon i just need to grease the shaft and ill be ready to go!. I was also wondering where i could get a LIPO programming card?

Hi
Just post your request under SWAP SHOP for it and I am sure someone will respond to you with it or here:

http://www.offshoreelectrics.com/proddetail.php?prod=dh-prb3311&cat=75

p.swiggs
11-18-2009, 03:52 PM
ok thanks..

Jesse J
11-19-2009, 09:16 PM
Hey, I have several and I only need one!! I will ship you one for $15 if interested. they really are the only way to reprogram the ESC

Paypal me tonight and it goes out in tomorrows mail - should be there by TGD for sure. PM me and I give you my addy.
J

p.swiggs
11-19-2009, 10:52 PM
ok thanks. i will let you know when i have the money for that.most likely in a few days. ill buy it if you still have it.

Jesse J
11-19-2009, 11:07 PM
Your name is written on it and it is waiting. It was just hoping somebody would be looking. Not really something that sells unless somebody wants one. Let me know when you want it.

p.swiggs
11-19-2009, 11:27 PM
ohhhhhhh ok. thanks i will let you know in a couple days.

p.swiggs
11-23-2009, 12:20 AM
hey would it be bad to run my boat in like 100 degree weather?

Jesse J
11-23-2009, 11:58 PM
Not if you had a cooler full of frosties. Just keep an eye on motor/esc temp. batts should love it.

p.swiggs
11-24-2009, 12:01 AM
aight awesome....

Jesse J
11-24-2009, 09:32 AM
I wish I had the same problem here...... might help the frozen ponds problem

p.swiggs
11-25-2009, 12:09 AM
yeah its always like 75 here but in lake havasu in arizona its like 115 and the waters like 65. my dad said it would be fine. he i pretty smart about boats cause we also have a deep vee in real life and they are pretty similar. he might try to make some custom trim tabs for the funtech.

p.swiggs
12-01-2009, 01:42 AM
hey so how would i buy the card off you. i have the money...

LiPo Power
12-01-2009, 05:24 PM
hey so how would i buy the card off you. i have the money...

You have to sent paypal to Jesse. Sent him PM and he will respond with details...
Robert

p.swiggs
12-07-2009, 05:37 PM
Hey guys is my turnfin supposed to shake a lil by hand? Is the props seal supposed to have a lil gap inbetween the outer side of the shaft?

p.swiggs
12-08-2009, 01:31 AM
like by the rubber washer and the prop? i dont think so cause i bath tested it woth no shaft grease and water got in, i think thats what the problem was but im still waiting on grease

Jesse J
12-08-2009, 08:24 AM
Did you want to buy the card?

p.swiggs
12-09-2009, 01:32 AM
Yeah and can u answer my question too

Jesse J
12-09-2009, 09:56 AM
I think you are describing the weakness of the stock hardware. Did you look at my Fastech mods thread? I replaced the stock strut and all those silly linkages with a more traditional strut where you can remove the drive line very easily. I would recommend replacing your hardware with a bearingized strut and .150 cable drive with 3/16" stub. this will solve the majority of your problems you are observing. see rcraceboat.com and Jeff Wohlt has what you need.

p.swiggs
12-09-2009, 04:10 PM
So I lil shakage is ok? I realized the gap problem too

Jesse J
12-09-2009, 04:56 PM
probably normal. I know Dad's boat has some vibration.

p.swiggs
12-13-2009, 04:48 PM
ok alright.http://www.funrcboats.com/images/products/PRB3800_md.jpg, the prop should be all the way against the the end of the shaft where it goes through and out of the shaft holder. sorry if this is hard to understand im still a newb

p.swiggs
12-29-2009, 03:19 PM
hey i ran my boat for the first time yesterday and it was not what i expected. :(.. dont get me wrong,it was fun but look only about 15mph.... some water got in so i put some sealant on anything i thught would let water in...yet again i was running realy old 3300 mah 7.4 volts. it was running wet to so that lost speed. im thinkin if i do the trim tabs do make the front ride higher and bend the turn fins out and run some good batts. and a x642 prop i will be about 34mph

p.swiggs
01-02-2010, 10:38 PM
???????

BHChieftain
01-03-2010, 12:13 AM
15mph stock? Something is not right. I have two fastechs, the stock one runs around 30MPH on two 6cell NiMh packs...

Are you running the battery packs in parallel or serial? Parallel would be pretty pokey... but you would have needed to modify the wiring to run it that way.

Be sure that your prop has 1-2mm gap at the strut, as the flex drive will compress under load, and if you don't have that gap, you could be binding the cable.

-Chief

LiPo Power
01-03-2010, 12:19 PM
hey i ran my boat for the first time yesterday and it was not what i expected. :(.. dont get me wrong,it was fun but look only about 15mph.... some water got in so i put some sealant on anything i thught would let water in...yet again i was running realy old 3300 mah 7.4 volts. it was running wet to so that lost speed. im thinkin if i do the trim tabs do make the front ride higher and bend the turn fins out and run some good batts. and a x642 prop i will be about 34mph

You need LiPo batteries. Your problem is your old batteries. If you did not change your battery wires and still have stock this boat will get you close to 30 for sure. When you get LiPos than you can swich to x642, for now you need to find out why you not where you should be just on stock. How did you get water in? Was your hatch taped properly? Check for other remarks you got from BHChieftain also.
Robert
PS
Here was my stock with LiPo upgrade only:
http://www.youtube.com/watch?v=ZfpqdsTSASE

p.swiggs
01-04-2010, 01:10 AM
hatch wasnt taped all the way..barely any water in in though. im not worried about that... how do i attach pics?

Justiniousrowe
01-04-2010, 10:58 PM
hey, Jesse J
In one of your earlier posts about the 5c for the fastech, how would you balance out the boat? I was thinking of doing this but a 3s weighs quite a bit more than a 2s battery. Where would you place the batteries?
Thnx

p.swiggs
01-07-2010, 12:47 AM
kk how do i attach photos to show u guys?

bwells
01-07-2010, 01:01 AM
Go to the forums home page and click on the first post, I think it is fast electrics question and answer forum, scroll down to "how to post a picture" and you should be good to go

p.swiggs
01-24-2010, 10:32 PM
Hey guys I tried my boat again with some lipos n nicads some good ones. That boat was doing 30+ n it's all stock. Basically as fast as my buddies sv27 with brass prop. This boat is awesome but it doesn't turn that well even with the steering sharpness adjustment thing all the way

BHChieftain
01-24-2010, 10:52 PM
Hey guys I tried my boat again with some lipos n nicads some good ones. That boat was doing 30+ n it's all stock. Basically as fast as my buddies sv27 with brass prop. This boat is awesome but it doesn't turn that well even with the steering sharpness adjustment thing all the way

Read this thread-- my boat turns on a dime now...

http://forums.offshoreelectrics.com/showthread.php?t=12302



-Chief

Jesse J
01-25-2010, 11:32 AM
hey, Jesse J
In one of your earlier posts about the 5c for the fastech, how would you balance out the boat? I was thinking of doing this but a 3s weighs quite a bit more than a 2s battery. Where would you place the batteries?
Thnx

Take a look at my thread on the Fastech let the mods begin. You will see why I removed the bulky framing in the aft of the boat. You will probably need to put them in sideways or remove some clutter.

p.swiggs
03-11-2010, 05:43 PM
so around the same speed as a sv27 mean my boat is performing good right?

BHChieftain
03-11-2010, 09:07 PM
so around the same speed as a sv27 mean my boat is performing good right?

If you can keep pace with an SV27, you are doing good.

My son's fastech is about 5-10mhp slower than my friend's SV, but the SV is running lipos and the proboat is on nimh (heavier and lower voltage...). On the same batteries I think they would be darn close.

I also think the proboat is more stable than the sv (but the SV is a lot easier to seal up for when it does flip over).

-Chief