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Author Topic: baby Severn  (Read 26177 times)

J.beazley

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baby Severn
« on: November 05, 2006, 07:31:21 PM »

here we go then finally got my baby severn on the water at long last.

for a little bit ive been modding a little severn and heres a few pics of it on the water at long last.









Jay
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J.beazley

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Re: baby Severn
« Reply #1 on: November 05, 2006, 08:53:18 PM »

i guess i best show people whats been done to the insides of my little friend.

with the grateful help of Shipmate60 (bob) this is what we have done to my Severn
ive used 2 x 380 type race motors with a sea rover 15amp ESC and a hitec 2channel reciever, using 35mm props and a pair of groupner small rudders to assist steering.
the whole lot running on a 7.2volt 1800mah buggy pack for the time being, but that will change when i have the money to upgrade packs.








and i think thats about it for the time being, will post more details if people want more info.

Jay
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maninthestreet

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Re: baby Severn
« Reply #2 on: November 06, 2006, 02:30:23 PM »

Is this a modified version of one of those RTR kits that are available on Ebay?
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J.beazley

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Re: baby Severn
« Reply #3 on: November 06, 2006, 03:02:13 PM »

yes this was one of the RTR models founded by the RNLI selling all over the place for around 50

as you can see ive changed a few bits and pieces  ;D
looks good on the water aswell with the extra bit of power from the bigger motors.

Jay
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neilthebus

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Re: baby Severn
« Reply #4 on: November 06, 2006, 07:31:15 PM »

Good to see these pics of your conversion of the Severn. I for one would like more details. I also have a modelof a U.S. coastguard patrol boat based on a Vosper Thorneycroft design that has a very similar set up to the Severn.

One of the motors packed up (rusted to hell) and I have stripped it down to its component bits in order to decide how best to modify it so any info on the Severn conversion would be appreciated.

Thanks for the PM by the way

Neil
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Aston

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Re: baby Severn
« Reply #5 on: November 07, 2006, 12:26:56 AM »

for what it's worth, Model Boats magazine are publishing a kit special this month in addition to the normal magazine.  There will be  a full article in there on converting the Severn - I know, I wrote it !!

Aston
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J.beazley

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Re: baby Severn
« Reply #6 on: November 08, 2006, 05:38:22 PM »

will be interesting to read that aston, whens the mag due out?

lots of people have lots of different set-ups in there Severn's, it will be nice to see what others have done and compare differences.

still got plenty of things i want to do with my severn to make it less "toy" like but it all takes time.

Jay
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johno 52-11

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Re: baby Severn
« Reply #7 on: November 09, 2006, 09:43:15 PM »

Hi Jay

Your boat looks like its got a good turn of speed there. Having been involved in getting a 1/12 Severn to perform I have one small observation. With the power your putting out you might consider adding some trim tabs like the real boat. On a 1/12 boat they do make a difference from the up position (bow lifts just like yours in the picture) to the down position bow stays down.

Regards

John
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J.beazley

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Re: baby Severn
« Reply #8 on: November 10, 2006, 08:28:09 AM »

Cheers for the observation johno  ;D

already got some trim tabs on order just waiting for them to get here so i can pop rivet them on.
then all i need to do is adjust the trim to where i think it should be.

will post a pic when they get here

Jay
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Shipmate60

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Re: baby Severn
« Reply #9 on: November 13, 2006, 07:03:50 PM »

Are you happy with her now Jay?

Bob
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J.beazley

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Re: baby Severn
« Reply #10 on: November 13, 2006, 09:12:17 PM »

yes bob ;D

the only thing that lets it down now is the "play" time, new battery pack will be on the way shortly giving me longer times on the water.

the only other thing im in the process of doing is fitting a set of trim tabs, hopefully she will sit a little more level and this may or may not raise her out the water a little more.

apart from all that aside im more then happy with the little toy.

Jay
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J.beazley

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Re: baby Severn
« Reply #11 on: November 21, 2006, 09:37:23 PM »

just an update on my little "toy" ive added a set of trim tabs.

using 2 pieces of brass sheet at 50mm long they are perfect and now she sits lovely on the water at full throttle.
i havent noticed any "drag effect" so to speak as she still gets up on the plain easy and cruises at a far speed.



will post pics of her on the water when i have someone to control her while i snap away ;D

Jay
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Aston

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Re: baby Severn
« Reply #12 on: November 21, 2006, 11:43:48 PM »

Hi Jay,  sorry for the delay in replying  - computer went into meltdown mode, and I only got it back today  :-\

The article is in the Model Boats kits special which came out earlier this month.

After all these years building and sailing model boats, and with my excellent command of the English language, I am now at last a publisht auther  ;D

Cheers

Aston
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J.beazley

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Re: baby Severn
« Reply #13 on: November 22, 2006, 06:11:08 PM »

i read the article in model boats aston, good right up by the way.

when i get time im going to make a new superstructure out of thin plasticard, 1 because it will be lighter and 2 i can add some more detail.

Jay
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modeliggy

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Re: baby Severn
« Reply #14 on: January 07, 2007, 09:40:50 AM »

Hi,
I am a new owner of a baby severn thanks to a Xmas present and am interested in upgrading motors etc. I have tried to obtain a copy of the Model boats magazine article but cannot find a copy. Can anyone help with a copy of the article to get me started on the rebuild.

Thanks,

Ian
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barriew

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Re: baby Severn
« Reply #15 on: January 07, 2007, 01:48:39 PM »

You should be able to get a copy of the 'Kits Special' Model Boats Issue here 01689 899200 or customer.services@encanta.co.uk.

Barrie
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J.beazley

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Re: baby Severn
« Reply #16 on: January 07, 2007, 02:04:44 PM »

you could always wait until the end of this month and get a copy of Marine Modelling Magazine, there featuring the conversion in next months mag.

if you want any info just shout i shall try my best to inform  ;D

Jay
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ofat1

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Re: baby Severn
« Reply #17 on: February 04, 2007, 03:25:14 PM »

Hi, Just finished this project,the Life boat looks great, same set up as J Beazley as I am a novice and no idea how to R/c boats, other than Sail winches and rudders!
Great article, it has helped me in understanding motors, engines etc.
I have 2 x 380 motors, a viper 15a esc and a dodgy 9v 1800mAh rechargable battery from an old r/c car,she ran fine for 3 mins, cutting out 30 metres away, a short range i thought, as my r/c yachts will cover over 150 metres using the 2 channel Futaba gear, possible esc interference? but she ambled along for 10 mins at a medium slow pace until dying completely.

My questions are, is there any way to increase range, (re-siting esc?)
and you have said you may upgrade your battery, what would you be looking at, more V or mAh, i have seen 7.2 2100mAh batts on ebay but am unsure if the esc can handle it.
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DickyD

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Re: baby Severn
« Reply #18 on: February 04, 2007, 04:53:39 PM »

Hi
Afraid I dont know the answer to your problem, but if you are after a new battery try these people first

http://www.component-shop.co.uk

Some of the chaps on here have used them and they apparently give good service and cheap prices.
Sorry , that sounds like an ad for an escort agency. ???

Richard ;)
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J.beazley

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Re: baby Severn
« Reply #19 on: February 04, 2007, 06:18:22 PM »

glad to see im not the only one playing with these litle "toys".
the way i overcome my trouble with volts and running times was to go up in volts to 8.4volts 2700mah and im using a light weight pack.

the key is to keep the weight down, your ESC can take upto 12volts so i would suggest using a 9.6volt AA cell pack as there light and you have the power.

Jay
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ofat1

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Re: baby Severn
« Reply #20 on: February 04, 2007, 06:49:23 PM »

Thank you both, i have now ordered battery packs 9.6 v 2200mAh from the component shop suggested, good price too I thought, compared to e bay.

So to clarify the Esc amp rating, this is for a full amp and not the mAh I thought?
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ofat1

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Re: baby Severn
« Reply #21 on: February 06, 2007, 06:15:55 PM »

Me again, attatched pic of myBaby Severn on the water, lovely turn & speed,the batteries lasted a good 20 mins on 3/4 speeds around the pond, good choice, thanks, just a quickie on electrics on this thread, let me know if i need to ask else where?

I may be over cautious, but i fitted a 10 amp in line fuse in the setup to protect the esc, this blew nearly straight away, i then fitted 15 amp fuse which was ok until i attempted full speed, as i said before i was all overr the pond @ 75-80% power, but the last notch proved too much! Am i being over cautious with the fuse ,although i would rather blow the 25p fuse than 20 esc?
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J.beazley

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Re: baby Severn
« Reply #22 on: February 06, 2007, 06:27:53 PM »

looks like you get good speed with your Severn.
better off blowing fuses at least there cheap to replace.

dont think i have ever taken my Severn to full throttle so wouldnt know if it might blow my in-line fuse.
could only suggest going upto a 20amp ESC and use a 15amp fuse.

Jay
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ofat1

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Re: baby Severn
« Reply #23 on: February 06, 2007, 06:59:04 PM »

Cheers Jay,
Didnt know if you were going to say the esc should handle the amp or not, i might just have to keep to 75% for the time being,do you not think that even with a 20 amp esc i still might blow the 15 a fuse? and also does the esc draw more current the larger it gets? therefore negating any pwer improvements.
regards Steve
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Stavros

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Re: baby Severn
« Reply #24 on: February 06, 2007, 11:35:28 PM »

Have done a conversion myself using MFA300 motors will post piccies asap and let you know what it goes like Stavros
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