First antweight (want to check if im on the right track)

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haz
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Re: First antweight (want to check if im on the right track)

Post by haz »

I seriously need to learn to READ before posting atm. I do apologise.
danjr1
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Re: First antweight (want to check if im on the right track)

Post by danjr1 »

Doesn't matter! I'll just have to give it a go when the motors arrive
TeamMental
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Re: First antweight (want to check if im on the right track)

Post by TeamMental »

It would be cheaper if you bought these and took the casing off:
http://www.hobbyking.com/hobbyking/stor ... eiver.html
danjr1
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Re: First antweight (want to check if im on the right track)

Post by danjr1 »

TeamMental wrote:It would be cheaper if you bought these and took the casing off:
http://www.hobbyking.com/hobbyking/stor ... eiver.html
they wouldn't fit in my design due to the dimensions and they fact they have pins! thanks for the link though anyway.

In other news, bored the wheels out to 2.9mm and they fit perfectly onto the gearmotors, really pleased with the results! tiny drop of strong Loctite during final fitting and the job should be a good'un
danjr1
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Re: First antweight (want to check if im on the right track)

Post by danjr1 »

what wall thickness do people use when creating 3d printed monocoque chassis?

id prefer to go down the CNC cut carbon route but it requires a dxf file which ive found a little difficult to create whereas I can easily make a computer model for 3d printing.
haz
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Re: First antweight (want to check if im on the right track)

Post by haz »

http://www.emachineshop.com/

Might be of use to you if you need something that can export as a dxf.
danjr1
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Joined: Fri Sep 03, 2010 11:54 am

Re: First antweight (want to check if im on the right track)

Post by danjr1 »

just had a go and seems simple enough! cheers dude!
danjr1
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Re: First antweight (want to check if im on the right track)

Post by danjr1 »

just tested the drive train and the servo boards haven't worked out. the surface resistors ive used aren't correct so the motors just spin!

does anyone know anywhere cheaper than the fingertech website to get some tinyESCs? its coming in around £62 for two delivered to the UK! Also, does anyone have any experience of using them with a DX6i with its funny mixing to get full throws? This is what puts me off the Botbitz ESCs as they cut out.

Drive train is coming in at 80g at the moment so im happy!

Cheers

Dan
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BeligerAnt
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Re: First antweight (want to check if im on the right track)

Post by BeligerAnt »

If you have no control over the motors whatsoever, then you probably have an open or short circuit somewhere. Check your soldering very carefully. Try to measure the voltages at the mid-point and at the top of the resistor chain, they will show you where the error is.

If you do have some control but can't get the trim correct, you may need some different resistor values. Try putting the original pot's back, adjust until the motors stop with the tx trims centred, then remove the pot's and measure the individual resistances of each half. You need to use a pair of resistors in the same ratio as the values you measure, although the actual values are not too critical.

Persevere with the servo boards - so much cheaper than FingerTech!
Gary, Team BeligerAnt
razerdave
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Re: First antweight (want to check if im on the right track)

Post by razerdave »

If they're the boards I gave you, I think they need different resistors anyway. I learnt a little something after I had made them and I had meant to alter them :P
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