Model Boat Mayhem
Mess Deck: General Section => Chit-Chat => Topic started by: RC Riviera 80 on June 01, 2009, 02:50:22 pm
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:(( Hi All
Well it was my maiden launch of my Riviera 80 over the weekend. The venue, my local park, Gunnersbury - West London.
The Riviera 80 is a electric RC boat, 2 ch radio. After adjusting the trim I shoved off! Great, she floats... now to put on some speed. Within 5 minutes I had come to a stand still in the middle of the lake. Finally with a breeze to the West my boat was blown ashore, to my suprise I had collected some Plastic tape around the prop. All cleared and off we went again! within a further 10 mins, dead stop; my new boat had cut out and was now mid lake on the way over to the swan nest. After taking my life in my hands and retrieving my boat, I found the prop fouled again; this time by a floating "Johnny".
After 30 mins of use, my engine began to smoke a little! is the right? Any ideas of how I can protect the prop from debris?
Are there any other local lakes that might be clean and "Johnny free" Anyone else in the area with the same boat?
It would great to get some feed back.
Cheers
Barry
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I'm afraid no lake is free of rubbish these days, and there's not much you can do about the prop.
Depends what motors you are using, but full on with a high speed brushed motor for half an our will most likely cause overheating, best to fit water cooling.
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come on down to perranporth cornwall our lake is always clean no trouble in 10 yrs
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Love to visit you - a bit far for the weekend though!
Cheers.
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A little bit of smoke is normal for a new motor but not much.
The motor stalling a couple of times won't have helped much either.
Once you've had a good clear run, the motor should be quite hot but not burning/sizzling hot,
if so you'll need water cooling, (do a forum search for water cooling, loads of stuff!). Or you may
just need to prop down a little.
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Thee is a pond in Barnes, I think that's quite near you but not sure if it can be used for models though.
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Fabricate yourself a cage to fit around the prop'. Fine wire mesh to keep those johnnies out. An old tea-strainer, maybe?
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Somebody with a better memory than me might remember an advert in the mags for slipping shaft couplings designed to prevent burnout. Otherwise have a look here for friction couplings. http://www.huco.com/
I assume the motor is also protected by fuses?
Barry M
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make a miniature one of these!
http://www.prop-protector.co.uk/
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Which lake in Gunnersbury did you play on? The Round Pound or the Fishing Lake?
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Cover the hull in Vaseline.......perishing thing will drop off!
Or use KY ...it should just slip off then!
Sorry......I'll get my coat.......comments may have been ill-concieved.
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Somebody with a better memory than me might remember an advert in the mags for slipping shaft couplings designed to prevent burnout. Otherwise have a look here for friction couplings. http://www.huco.com/
I assume the motor is also protected by fuses?
Barry M
Got it now - The auto slip/auto reset couplings were sold by Mobile Marine Models but now are not listed in their catalogue. Instead they list shear-pin couplings. Anyhoo, maybe worth an email or phone call?
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Hi Jonny
I used the round pond, not to bad! I was the only boat on the pond. I think Ill continue until I am asked to move. Early morning 09:00 could be a good time, no one around.
Are you afloat now with your boat?
Regards
Barry
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Thanks for the advice... The motor does not have a fuse in-line - a good idea! How do I cool an electric motor?
Barry
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you cool them by using water coils. there are different sizes depending on your motor. scroll down the link below and you will see them.
http://www.westbourne-models.com/electric-motors-drive-sets-for-model-boat-1727-0.html
these fit over your motor, one end will be linked to a water pick up pipe, these are normally placed behind the prop so water is pushed up through the coils, then another silicone pipe goes from the other end of the coils and out through the side of your boat where the water exits. you will need to drill a couple of extra holes to fit these pipes behind the prop and out the side of the hull.
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What you need and how to water cool an electric motor
(http://i124.photobucket.com/albums/p8/DickyD_photos/1428_sml.jpg)
(http://i124.photobucket.com/albums/p8/DickyD_photos/3324_0.jpg)
(http://i124.photobucket.com/albums/p8/DickyD_photos/DSCF0214.jpg)
All available from www.cornwallmodelboats.co.uk
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The tea strainer idea will work for larger debris at the cost of some performance. Finer weed will find its way through and tangle with the prop. Larger stuff might stop water flow over the prop, but stopping, or a brief burst of reverse might clear it. One of my more effective near cures was a spike pointing due down just in front of the prop. This caused weed, feathers etc to be deflected down and out of the flow through the prop. If a honed brass prop had been fitted, some mincing might have happened as well.
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Hey thanks guys..........
Lots to think about and get on with !!!
Cheers
Barry ;)
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Gerra ED racer in it, Never had "Debris" problems with a propper motor.
Regards Ian. :-)) %)
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Hi Jonny
I used the round pond, not to bad! I was the only boat on the pond. I think Ill continue until I am asked to move. Early morning 09:00 could be a good time, no one around.
Are you afloat now with your boat?
Regards
Barry
Not quite yet, but very close... :-))
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Got a tent round my prop last week.
It was the 1:1 on the Shropshire Union, near Elesmere Port.
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Got a tent round my prop last week.
It was the 1:1 on the Shropshire Union, near Elesmere Port.
I hope there wasn't anyone camping in it...
(http://i.dailymail.co.uk/i/pix/2008/05/13/article-1019346-0137D1F700000578-659_468x326.jpg)
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Got a tent round my prop last week.
It was the 1:1 on the Shropshire Union, near Elesmere Port.
A school friend on his first Broads holiday had a suicide victim - not at all funny