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MAGracing Forum • View topic - Magracing under new management

MAGracing Forum

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It is currently Wed 14. Nov 2018 20:31

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PostPosted: Fri 27. Oct 2017 19:57 
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Posts: 7
I'm also interested in seeing how the steering works. I'm not holding my breath, but this might be a game changer for magracing


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PostPosted: Sat 28. Oct 2017 20:40 
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By the way I did not intend to be sarcastic. ​Just wondering how you did accomplish this while staying with a potential pds 60 sales chassis price. All I'm saying is if you have combined magnetic following with RC control, that would open in my mind new possibilities for magracing track build.
I looked at it and thought the only way was by translating the magnetic follower movement thru a miniature hall sensor (available but expensive at $80 or so) into an input into the software. A bit like the RealFX system which i purchased, and gave away

Martin


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PostPosted: Tue 14. Nov 2017 15:57 
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PostPosted: Fri 24. Nov 2017 20:37 
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Just wanted to give my perspective of things. I did have private E-mail with Wes (long time) before. You have an aging customer base and no new to pull in. I'm 60, and I'm one of just two potential customers I'm aware of for magracing, not the scale buidings
If you have something, consider starting a Kickstarter to decide if it works for you?

best regards,

Martin


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PostPosted: Fri 15. Dec 2017 13:22 
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Posts: 77
Hello everyone.
I thought I would update everyone on the progress we are making and the issues we are having. There are a few here trying to get a new chassis going and I would encourage everyone to show their work as it helps a lot.

I am still trying to perfect the steering mechanism. I am indeed using a servo with a magnet attached to the arm to pull the lower guide arm left and right. As others have suggested this is not as easy as it might seem as the secondary magnet can tend to pull the lower arm upwards. This makes setting the primary magnet height very tricky. My aim would be to have a magnet that doesn't need adjusting in height if possible. This is the main reason we haven't released a chassis yet.

I have also tried a small linear servo, but this also has problems. The magnetic force is great and tends to jam the arm of the servo.

I do think there is merit in using a servo this though as having some magnetic "tension" at the centre tends to shop steering shimmy at speed. You do need to increase the main track magnet size to allow you to do this.

I am now progressing another design where the magnets are back in a more conventional position on the steering cross link (similar to the original design) so we will see if this improves things. If that is another dead end, we will have to go back to the coil. I am reluctant to do this as this will mean that we wont have analog steering, just simple left and right and also the battery run time is reduced back to what it was. I have supplied one of my boards to Magracer for trials with his setup, but haven't heard back yet as to how its going. I have also tried his separate driver board for powering a coil, but it does not work as far as I can see.

If we do have to go back to the coil system I am afraid that this means another delay as I rejig the electronics control board to be able to drive the coil. In any case I think i am going to do this so we have two board designs, one for coil and one for a servo steering for people to experiment with. This shouldn't take too long as we already have the servo one done and software developed.

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PostPosted: Mon 15. Jan 2018 11:56 
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Hello Everyone
Good news at last. I have completed the design for the new chassis and all parts have been ordered so it should only be a matter of weeks now before the first cars are for sale.
The initial batch will be Porsche 908/3. The first 5 for sale will be completed and fully painted. They will probably be about £50 each. I also have a batch of Alfas in the pipeline. After that I will probably do something a bit different such as a pair of saloon cars, maybe using some purchased body shells. Your suggestions are welcome for what you want me to do.
Thank you for your patience.
Martin

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PostPosted: Thu 29. Mar 2018 18:36 
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Not sure how much battery it would cost (actually can also be a good thing cause of more pitstops ;-)) but I wondered:

did you try using a coil instead of a magnet for the guide?

That way you can disable the coil when steering and steer anywhere on the track and when not steering it would follow the wire.


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