MAGracing Forum

Share your MAGracing with the rest of the world, get inspired and enjoy
It is currently Mon 15. Oct 2018 18:17

All times are UTC




Post new topic Reply to topic  [ 17 posts ]  Go to page Previous  1, 2
Author Message
PostPosted: Fri 16. Aug 2013 22:17 
Offline
User avatar

Joined: Wed 16. Jan 2013 16:35
Posts: 313
Location: Helsingborg, Sweden
I have some unpacked batterys. Will test and report to forum tomorrow!
Have a little paus from MagRacing just now!


Top
 Profile  
 
PostPosted: Sat 17. Aug 2013 15:12 
Offline
User avatar

Joined: Wed 16. Jan 2013 16:35
Posts: 313
Location: Helsingborg, Sweden
No problem.
I hade two packet, one protected, that I use in the controller,
and one regular package. No missing magnetic contact!


Top
 Profile  
 
PostPosted: Wed 18. Sep 2013 00:37 
Offline
User avatar

Joined: Sun 23. Dec 2012 14:37
Posts: 160
Location: Edmonton, Alberta, Canada
Hi All, Just to follow up. The this is the best solution I have come up with so far, no mods to the cars. Just take a piece of tin can (about ten thousands thick) and cut a rectangle about 9mm x 18mm and fold it in half with a little kink on one side. Place it on the positive magnet in the car and insert the battery positive end first. This will hold a non magnetic battery in while racing. Any other ideas would be welcome. Notice in the first picture that the non magnetic battery moves over to the case and won't stick to the post. I hope we don't find any more of these batteries.

Paul


Attachments:
DSCN1542c.jpg
DSCN1542c.jpg [ 29.6 KiB | Viewed 3842 times ]
DSCN1532c.jpg
DSCN1532c.jpg [ 26.11 KiB | Viewed 3842 times ]
Top
 Profile  
 
PostPosted: Sat 28. Dec 2013 14:34 
Offline
User avatar

Joined: Sun 23. Dec 2012 14:37
Posts: 160
Location: Edmonton, Alberta, Canada
Well the clips don't work as reliably as they should, sometimes they will pop out of the car in a crash. So the next test has been to solder some 10 thousands steel plate (same as lane change plate) punched out with a paper hole punch. I soldered with flux and radio solder as quickly as possible to keep the temperature down. The batteries now stay in as designed by Wes. Of course these batteries work fine without the steel in the transmitter and the modification is not needed. So no one else has run into this problem? I think I'll go buy a lottery ticket... Paul


Attachments:
DSCN2808c.jpg
DSCN2808c.jpg [ 25.26 KiB | Viewed 3376 times ]
Top
 Profile  
 
PostPosted: Sun 4. May 2014 23:33 
Offline

Joined: Sun 13. Apr 2014 01:02
Posts: 308
Location: Sedona, AZ USA
I bought 4 UltaFire 10440 3.6V 500mAh Li-Ion rechargeable batteries from BatteryJunction.com . For all 4 batteries the the attractive force between the magnet on my battery removal tool and the steel case is much stronger than the force to the positive terminal. None of these batteries would stay put in the battery compartment of the chassis. I solved the problem by gluing a small magnet on top of the plastic battery compartment near the positive end.
Has anyone found a reliable source of batteries that work in the chassis without any modification?


Top
 Profile  
 
PostPosted: Mon 5. May 2014 19:48 
Offline

Joined: Fri 21. Dec 2012 17:37
Posts: 310
A quick search for 10440 lithium ion batteries on e bay.com showed 91 results. The first being a 4 pack of Trustfire
for $11.55, post free ( I assume to the U.S.) Worth a try I should think Ned.


Top
 Profile  
 
PostPosted: Wed 10. Dec 2014 20:00 
Offline

Joined: Fri 21. Dec 2012 17:37
Posts: 310
As most of my batteries are getting on for 2 years old I decided it was time for some new.
Ali Express had the best deal at $16 for an 8 pack but the web site didn't like my credit card.
Prefer to pay by Paypal anyway so ordered 8 pack for $18.68 from Outdoor store 168 on E-Bay.
There are Trustfire unprotected. Hopefully these will have the magnetic contacts. I still haven't
come across the non magnetic ones yet.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 17 posts ]  Go to page Previous  1, 2

All times are UTC


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group