Shaun Walsh
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Posts posted by Shaun Walsh
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The daughter of a friend of my wife purchased an electric Ford a couple of weeks ago. A few days after she bought it her next door neighbour phoned her to say "the bonnet of your car is smoking" as she left the house there was a loud bang and the bonnet flew up followed by the car bursting into flames. It took the fire brigade 3 hours to extinguish the fire.
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Running the numbers through propCalc shows very little difference between fixed and folding blade props so a 12x6 folding Graupner or Aeronaut prop would be a good place to start.
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1 hour ago, Simon Chaddock said:
Trevor
At the Hawker factory when they were making the Sea Hawk the bifurcated exhaust duct was apparently referred to as "the trousers" by shop floor!
Was the point where the exhaust duct bifurcated referred to as "the flies".
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19 minutes ago, Brian Cooper said:
A look that only J.R.Hartley could love.
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The Bigfoot looks a reasonable model to learn on but, as JD8 said, join a club and get advice and assistance.
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9 minutes ago, Martin Harris - Moderator said:
Good thing your observations can be read in context!
It might be better not to push the boundaries though - we made a simple request to keep things clean and non-offensive and it doesn't require comment or discussion on this thread...
Completely agree, the point was that context is important. I was commenting on the Ofcom publication.
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3 hours ago, EvilC57 said:
Ofcom have already done it in their ‘Offensive Language Quick Reference Guide’. I won’t link it directly here, ‘cos we’re not supposed to.
Makes interesting reading though 😱🤐🤫!
Gosh chaps, if I read that correctly I can never tell anyone that I "grabbed my tranny" or "had to drop the flaps for a close approach"!
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Assuming a 2s battery, given the weight something like this should be perfectly adequate.
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9 minutes ago, Hunter said:
Hi Shaun
thanks for getting back to me.
The finished model weight is approx 6.25 ozs, 175 grams, and the recommended prop is a GWS 7”* 5”, the original battery was a 350 mah lipo
hope that helps with your recommendation
cheers
Mark
Regarding the lipo, is it 2s?
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Perhaps it would be useful if the moderators could post an exhaustive list of unacceptable words............
Oh, hold on
😉
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Alternatively a small direct drive motor should do the job, what is the weight of the model and what size prop do you want to use?
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Hacker a10 with 4.4:1 gearbox perhaps? Available in 3 different Kv ratings to suite the battery/prop combination required. Just make sure that cooling is adequate as, over time, excessive heat breaks down the adhesive holding the pinion onto the motor shaft and you lose drive. Easy enough to fix, the gearbox unscrews easily and you just have to reattach the pinion with permanent loctite and reassemble.
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5 minutes ago, Fly Boy 3 said:
Hi Shaun, the Horizan Artizan foamy is first in line with loads of space. Then there is the Pushycat ( lately on forum)
Not quite ready is Peter Millars “Easter Eagle, a glider. Cheers
The Atrizan recommends 1800 to 2200 mAh and the Easter Eagle power system on 4-Max uses a 1000mAh 3s. the 2200 would probably bo OK for the Pushy Cat too.
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5 minutes ago, Fly Boy 3 said:
Hi all, not knowing enough info on pairing a battery to a model, I would like to know the following.
What 3s mah lipo for 48 span foam models flown sedately lol. Thank you.
Any particular model in mind? Space and CoG also need to be considered.
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30 minutes ago, EvilC57 said:
This beer is giving me a sense of déjà vu!
Many years ago a manager I worked with would often feel ill on a Thursday, phone in sick on Friday and return, miraculously cured, on the following Tuesday. We referred to his mystery illness as "Deja 'Flu".
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You will need either a dongle or a wired USB interface regardless of the transmitter you choose.
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Refit the 4-Max motor with a few degrees of downthrust and try again, repeat until happy. You can always limit the power by throttling down or reducing the throttle range in settings.
I have one model which climbs on full throttle and it wasn't possible to increase the downthrust so I mixed in some down elevator to the throttle which keeps it level as you wind the power up. Mix can be turned on and off as required.
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10 minutes ago, Zflyer said:
Have you heard that the new Medical Series on TV are doing one on Diarrhoea they expect it to run and run...
So more like Dysentery than Dynasty?
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33 minutes ago, leccyflyer said:
In that case I guess he's not under any pressure!
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Lidl sell a digital hot air gun, fully adjustable temperature and fan speed, it's very good.
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Hobbyking's latest 32 bit Aerostar and the equivalent Beatles ESC are my preferred choice.
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If you use the stabilised versions make sure that the BEC can supply enough current. I had a few brown outs using an ESC with a low spec bec and digital servos.
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I have several Lemon 6 channel receivers and the non stabilised versions are in a number of gliders. They have out of sight range. Don't ask me how I know.
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Electric Cars.
in Chit-chat
Posted
It doesn't quote the figures as fires per 100,000 vehicles or fires per 100,000 miles driven (I chose 100,000 as an example, any number will do). The figures quoted are therefore ambiguous at best and no meaningful comparison can be made. The problem isn't just the number of vehicles catching fire, its the difficulty in extinguishing the fire when it does happen. Firefighters have years of experience of tackling petrol fires(and the equipment to do so) but very little experience in coping with lithium battery fires.