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RE: Walmart Submarine = Cool ! Part II - 1/17/2007 5:34 PM   
Captain Nemo12



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quote:

ORIGINAL: CrunchyFrog

Captain's an old hand here on the RC subs board, Subhunter; his knowledge is broad and deep...I can testify he has helped out people wanting a little push getting started in RC subs.

Wow. You've obtained a copy from this guy in your town, yet Ebay says no copies have been sold.

If I were you, I think I'd consider Nemo's response. I think the seller should take that offering of Ebay.


Crunchy,

Who are you calling old??

Besides, I've still got lots to learn myself! I'm sure there a lot of people here who are much better at RC-subs than I am...

PS.: Can anyone PM me the mod file for the Walmart Sub?

< Message edited by Captain Nemo12 -- 1/17/2007 5:56 PM >

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RE: Walmart Submarine = Cool ! Part II - 1/17/2007 9:01 PM   
CrunchyFrog



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Status: offline 		Since the prop mod was a recent topic of interest, I thought I'd add a couple of notes.

For the prop mod, I've always been blessed with a supply of parts from previously-junked subs.

If I'd had to improvise, I think that instead of adding a second shaft right behind the first as I normally do, I would have added a pen's ink tube. But I wouldn't have added the tube to the end, because the shaft's prop end has teeth at the end that are supposed to grip the prop, and the ink tube doesn't have those.

The logical next idea, then, would be to saw the shaft in the middle, so teeth on both ends are preserved (the motor end has teeth for the motor gear about 1/2 inch up the shaft). But that gives you no teeth for gripping the pen-tube joint in the middle: I once added--to the end of a stock shaft which was at the motor end--a custom-length prop shaft I'd cut, and found because I wasn't using two complete prop shafts with teeth on each end, the motor spun furiously but the prop end slipped in the smooth joint and didn't motivate the sub much. I addressed it by switching the custom-length shaft with yet another prop shaft from a Seawolf up/down thruster that was a bit longer but had the same teeth; probably you could get the same results by custom-cutting the shaft in the middle, then adding the desired length of pen tube, then using silicone or hot glue to hold the joint.

I would just hope a glued/siliconed joint would never give out when your sub was halfway across the canal: Silicone caulk does flake when you stress it. Maybe with gluing a failsafe would be in order, like the clamp I thought I remembered Gulfstream used in his prop mod, with a metal ink tube.

< Message edited by CrunchyFrog -- 1/18/2007 6:35 PM >

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RE: Walmart Submarine = Cool ! Part II - 1/18/2007 4:20 PM   
Captain Nemo12



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Status: offline 		Well SubHunter sent me the mod manual he bought on ebay and I took a look...

Guess what? It turns out that many of the pictures were from the Walmart Submarine Threads on this very forum! Then again, there were no author names listed so I have no idea if the person selling it was the one who made the original mod list that was metionned on this forum a while back... Still, I'm very suspiscious!

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RE: Walmart Submarine = Cool ! Part II - 1/18/2007 5:25 PM   
THE UNDERTAKER


 

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Status: offline 		gota agree wi u capt.not good after all the hard work & effort put in 2 these threads that sum1 shud gain from this in money after maybe no input here.

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RE: Walmart Submarine = Cool ! Part II - 1/18/2007 5:31 PM   
THE UNDERTAKER


 

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hi crunch.amazd at u speakin russian how did u manage 2 type the words?
days aproaching now wen can sail AKULA the green slime not on all parts off canal dont no what 2 make of the new walmart subs bit futuristic 4me.cud do sum good russian convertions tho methinx intrestin thread bowt yor prop mods i agree wi u n capt bowt this guy selling mods not gud keep u posted on skipjak and AKULA

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RE: Walmart Submarine = Cool ! Part II - 1/18/2007 6:28 PM   
CrunchyFrog



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Status: offline 		Hello Undertaker! I cheated typing the Russian words, I have gotten lazy in my old age. There is EZ stuff available now, as opposed to 10 years ago when I learned to type Russian at a ponderous pace. Go to the front page of http://www.freetranslation.com/, write something in English, set for English-to-Russian and click "Free Translation," and you too will transcend the language barrier. I just copied (Ctrl + C) to the message I was typing.

The translator spits out stuff that would sound very funny to a human Russian half the time, but it is mostly intelligible and not bad for cyber !

That's neat that you have a canal out your door. Bathtubs are great for checking how she floats and balances, but open water is easier to see how she runs. You'll see things on a long run that didn't show up in the length of the tub.

New Wally subs Shark and Gator...hee hee! I'll keep buying Chicagos and Dallases. I may buy one of the new ones if I end up with a Chicago leak and need to refurbish. I like the look, it's just not my speed.

Glad you like the prop mod posts. I hope you will find them helpful. I also hope we'll get our hands on the mod manual, which I'm afraid may not have been updated in a year.

Very generous of you to offer the Skipjack as a treat ! I remember how I had trouble with that simple hull when I was eleven years old trying to get periscopes to remain standing up cemented, and not having the patience. It'll be a hoot to see how it goes together this time. I hope for a handsome result. Thanks !

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RE: Walmart Submarine = Cool ! Part II - 1/19/2007 2:08 AM   
AustinTW94


 

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Status: offline 		Hey captain,

You said you were sent the mod manual, do you think you can email it to me, or was it sent my snail mail? I am too lazy to go back through the entire forum to find all the mods. Help is appreciated thanx

(AustinTW94@hotmail.com)

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RE: Walmart Submarine = Cool ! Part II - 1/19/2007 7:13 PM   
CrunchyFrog



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Status: offline 		I just had a lake run to try the AT mod on a bit longer drive.

I had thought the excess down pitch from that one plane would be a problem, but it made the sub much easier to dive, which it does smoothly. I can’t put buoyancy at neutral/slightly negative as a military sub would practice to maximize control or speed—but it’s planing under, which has a feeling of authenticity in spite of having fixed fins. I don't need the dive prop until complete submergence starts to accelerate the sub upward. My little $20 dynamic diver really looked at-home a few feet down today, driving around.

I'm not too afraid of losing the sub to excess down-planing. It has about the right amount of buoyancy positive --for a calm day like this, at least--plus the up thruster; and I suspect weeds and/or leaks, not "reverse lift", of killing two of my subs--only on one do I half-suspect “crush depth” ...which couldn't have happened if I hadn't kept pushing the sub down.

This sub is easier to control than it's ever been before. With those fins fixed making the stern tend up during forward motion, it'll eat batteries faster if I have to run the up thruster to surface cruise, but how long do I really care to stay on the surface...heck, it's supposed to look like a nuke (and my bats are rechargeable). As long as it has its light, I can see it submerged at night. Submerged, the extra displacement of plastic above the waterline adds enough buoyancy to overcome the down-planing and make the sub want to rise when moving forward.

I think the big area where it could use more control is lateral turning. That's always been a Wally sub deficiency. I can't stay dived and turn even 30 degrees. Time for me to reconsider the rudder mod from way back in Wally subs I. I've dropped the rudder idea before because instead it's handy--when I'm bringing the toy sub in to my pickup point--to turn in-place so it can take just the right angle to come in underfoot. Navy subs have tugboats in-harbor...Wally captains have the turn-in-place! But I think with the distances I like to run now, the rudder mod is looking good, finally.

Hmmm. I've heard the new Wally boats may have radio-operated rudders, but to me the rudders look fixed. I think I see a horizontal prop in the stern prop cage. I'm curious !


< Message edited by CrunchyFrog -- 1/20/2007 5:40 AM >

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RE: Walmart Submarine = Cool ! Part II - 1/20/2007 12:05 PM   
THE UNDERTAKER


 

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Status: offline 		well crunch the big days finally arrived 4me & the AKULA.estimated sail time set at 2pm.not using recharchables as havnt ad chance 2 rebalast got 2 sets of duracell ready 2 run.beautiful day ere at mo.sunny but windy.stretch of canal chosen.not sure ov depth yet till get there. hoping 2 do vid4u.cud do with russian hat.look a bit of a jerk tho wearing that on canal bank ow often u sail in the dark? skipjak on its way 2me.ad confirmation sent by email.keep u posted.undertaker

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RE: Walmart Submarine = Cool ! Part II - 1/20/2007 4:54 PM   
THE UNDERTAKER


 

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Status: offline 		Hello crunchy. a very disapointing day,walked 1 mile after leaving the car.picked a great spot near a bridge clear n bowt 4ft deep that lead 2 a part 5ft deep.got the sub in the water workd 4 2secs then nothing. thot it was the duracells at 1st.came home & rebalast the sub 4 the recharchables which took a good 40mins opening n closin refitting with more styrene n taking the weights out of the front fins.didnt realise just how heavy those recharchbles are.after saying goodbye agen 2 the wife and asking her 2 notify the coastgaurd if i didnt return .got bak 2 the chosen spot.same agen i put the end of the antenna in2 the water next 2the receiver &it workd. i new i had 2 give up at that.got back home & the bath was full still after rebalasting.same sort of thing.only workd wen put the ariel in2 the water it workd perfect in the bath in the trials,even when i walkd downstairs i cud still hear the sub working in the tub.whats happening crunch? do i need 2 redoo the reciver mod so that the antenna is on the sub protruding out of the water a good foot or 2?the radio waves not pennetrating the canal water. HELP!

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RE: Walmart Submarine = Cool ! Part II - 1/20/2007 4:58 PM   
THE UNDERTAKER


 

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Status: offline 		4got 2 say.even the sonar dome has come off. gotta refit it. feel as down as the kursk.......rock bottom BUT NOT GIVING UP!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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RE: Walmart Submarine = Cool ! Part II - 1/20/2007 7:07 PM   
Captain Nemo12



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Status: offline 		Could it be that the transmitter battery has gone low? Or maybe some water got in the receiver... If possible, open up the sub and check for moisture in the electronics compartments.

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RE: Walmart Submarine = Cool ! Part II - 1/20/2007 10:34 PM   
CrunchyFrog



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Status: offline 		A mile walk! That's a lot of anticipation built into your canal trip. Sorry to hear it was a big two-time disappointment.

Sounds like a leak or poor batteries. But you say it reacted when you controlled it from another part of the house...batteries should have been okay as long as they weren't run down in the test phase before you set out for the canal. New rechargeables do need an initial charge to be fully up-to-snuff, so maybe they gave out earlier than would be expected on a full charge ?

Worked for 2 seconds after hitting the water...suggests a leak. But very strange that it worked fine in the bathtub. It does seem to suggest something different about the water.

>the radio waves not pennetrating the canal water.
So it really does seem to be the water ? Salt water?

Yes, lots of antenna may be a really good thing--my boat has four to six inches of antenna running out the top of the periscope, the antenna inside the sub being a total of 3 times stock length. And this is for non-salt water... Are you pressing buttons when the sub antenna's submerged in the canal, or is there a problem when the sub antenna's still above water? Does the sub still work okay now when it's immersed in the bath tub?

Regarding float level: Indeed, those rechargeables will cause a sub that has been tested with regulars to plunge straight to the bottom.

I don't know what to say about that canal water--salt, mineral, or whatever may be in it...except if that's really the problem, you might want to look for a different ocean. In 2005 with Mapquest.com I found a pond close to the job I held that year, and the pond was so secluded and undiscovered, I felt like I had my own private ocean. Alternately, I had the apartment pools. But usually my oceans are public bodies of water all the locals know about--I just visit at off-peak times.


< Message edited by CrunchyFrog -- 1/21/2007 7:15 AM >

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RE: Walmart Submarine = Cool ! Part II - 1/21/2007 12:55 AM   
sirnumskull



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Status: offline 		Greetings to all Bubbleheads!

I see much has happened on the thread even an extension!

EXCELLANT!!! ARRRH!!!

Best Regards to Everyone,
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RE: Walmart Submarine = Cool ! Part II - 1/21/2007 1:48 AM   
CrunchyFrog



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Status: offline 		Welcome back, Sirnumskull

By the way, guys--there are now TWO tiny nuclear subs at the bottom of Town Lake, Austin.

Not sure what happened after it slid down out of sight. Sub had reserve buoyancy last time I set it in motion. Lots of debris in the water today from the ice storm; maybe some of it snared my boat.

< Message edited by CrunchyFrog -- 1/21/2007 5:58 AM >

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RE: Walmart Submarine = Cool ! Part II - 1/21/2007 3:33 AM   
Auslide


 

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Status: offline 		If You can Walk around the Shores.. Sometimes Subs can Turn up months later..

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RE: Walmart Submarine = Cool ! Part II - 1/21/2007 5:19 AM   
CrunchyFrog



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Status: offline 		Well, if it does, my phone number is etched on four surfaces of the pot-metal weights, and written in marker a few places in the battery box. I may get to find out whether anybody scuba-dives that attractive lake.

Last night I'd meant to find my old ID card, a nice non-water-soluble source of my name and address, and also put it in the battery box or silicone it to the keel. Too bad I didn't remember to look for it before I set out this morning.

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RE: Walmart Submarine = Cool ! Part II - 1/21/2007 6:16 AM   
CrunchyFrog



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Status: offline 		>ow often u sail in the dark?

I was starting to get out maybe once every week or two after dark, before the spate of unusually cold weather here. The lights always let me know where my sub was on a night run.

I've found tiny LED lights aren't a help, though, when a sub disappears on a day run. Plus I think the light had less than 5 hours left on its current batteries when my sub disappeared around 1 pm, so I doubt it would have been helpful waiting to spot it after dark.

I've lost three Chicagos and broken another. I think I'll start naming them so I (and whomever unfortunates I keep yakking to about them) can tell them apart: Chicago Auditorium Shores (lost today), Chicago Town-Lake Deep, Chicago Koi-Pond , Chicago Car-Trunk . I thought about being more positive and naming each after the place where it had launched--but two were christened in the same place

< Message edited by CrunchyFrog -- 1/21/2007 6:18 AM >

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RE: Walmart Submarine = Cool ! Part II - 1/21/2007 9:05 PM   
THE UNDERTAKER


 

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Status: offline 		hi crunch bear wi me we avin probs wi pc crashing on us gota b quik.sorry u lost another sub how do u cope with yor losses? id or or get very wet

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RE: Walmart Submarine = Cool ! Part II - 1/21/2007 9:09 PM   
THE UNDERTAKER


 

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Status: offline 		hi crunch gota sen short quik uns. the sub workd in bath so didnt chek 4 leaks.it only workd wen put arial in2 water workd great in trials.workd in canal only with arial in water next 2 sub

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RE: Walmart Submarine = Cool ! Part II - 1/21/2007 9:13 PM   
THE UNDERTAKER


 

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Status: offline 		shud i do the metal recever antenna mod on rear ov the sub leaving a good 2ft stikin up out of the water so 2 get more out of water transmission? the recever wire at mo is glued 2 the outide ov the hull bowt 5inch long. i only used ordinary electric cable 4this wud that effect it?

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RE: Walmart Submarine = Cool ! Part II - 1/21/2007 9:19 PM   
THE UNDERTAKER


 

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Status: offline 		as u can c the recever is constantly under the water.can the water travel down the cable in2 the reciever? it workd great in trials till it went in canal.didnt even get any depth as didnt get it below surface.went down in bath at home tho.the batts were real cold wich causd slite condensatn wen they hit warm indoor air.

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RE: Walmart Submarine = Cool ! Part II - 1/21/2007 9:22 PM   
THE UNDERTAKER


 

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Status: offline 		does anybody know if the more xpensive subs (ie shearline range) av the same trouble with radio waves penetrating difficult waters or do they cope better.?

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RE: Walmart Submarine = Cool ! Part II - 1/21/2007 9:32 PM   
THE UNDERTAKER


 

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Status: offline 		hi crunch.sorry bowt so many short threads,but better 4 me now wi pc playing up.
if its a yes 2 the metal antena mod.were can i get a real long thin 1?its not gonna look as realistic with this but if i can get it going with it then wot the heck cheers bro

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RE: Walmart Submarine = Cool ! Part II - 1/21/2007 9:56 PM   
CrunchyFrog



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Status: offline 		Undertaker,

Sorry about your compounded troubles with sub and PC ! I'd say run that antenna up and get some altitude. Doubt the aerial end of your receiver antenna will be responsible for any leakage, I don't think anyone's ever had it come in that way (maybe at the black-box end of the antenna, but from not the end that's in the air, or from any joins outside the black box).

Have you tested the sub since bringing it back from the canal? Just wanted to make sure I understood right--sub behaves like you expect in the tub (and still does), it's just the water in the canal playing tricks.

Losses or ...depends on whether I still had something I wanted to work on, and whether I thought the family budget could take on a new sub for Daddy. Right now I was in no hurry to do the next mod, and I think I can get a new Chicago or Dallas; I got to test out my anti-torque mod and found it worked rather well, even captured a little video. This was the best sub I ever lost, yet I'm kind of OK about it ! It happens.

< Message edited by CrunchyFrog -- 1/21/2007 10:00 PM >

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