[MOC] Two Crawlers based on 9398

[ddimkin]

Hi Guys. Here are my first two 9398 based crawlers. The tracktor is my personal favorite - it is 20g lighter then the Evil Crawler with netweight of 770g. (excluding battery - 200g and balancing weights - 100g). Using a DC/DC converter to keep a constant voltage of 11.8V and a 8.4V third party Li Ion battery. A second 9398 set is on its way and I hope to be able to build more complex models then :)

1. Evil Crawler:

https://www.facebook.com/daniel.dimkin/media_set?set=a.10203101167862642.1073741830.1009723444&type=3

2. The Tracktor:

https://www.facebook.com/daniel.dimkin/media_set?set=a.10203101020698963.1073741829.1009723444&type=3

[Kierna]

Nice and fast. You have a perfect garden for rockcrawlers!

[ddimkin]

Thanks!! Thats the park nearby :) Sofia/Bulgaria.

Edited August 3, 2014 by ddimkin

[Bzroom]

Very cool. Why did you put tape around the front differential?

[ddimkin]

To block it :)

[grum64]

Very nice & pretty quick.

Edited August 3, 2014 by grum64

[nerdsforprez]

Nice. Yes, these MOCs are very quick. How did you provide power using over 11 volts? Also lithium Battery? Is there a post that explains how this is done? I have heard that the XL motors can take more than the 9 volts provided by the 6 AA batteries from the PF battery box... but how is this accomplished?

[ddimkin]

I use this battery:

http://www.ebay.co.uk/itm/NEW-6400mAh-8-4V-Battery-Pack-Pouch-For-CREE-XM-L-T6-LED-Bike-Head-Lamp-Light-/181296289459?pt=UK_ConsumerElectronics_Batteries_SM&hash=item2a3619d6b3

and such a DC Converter between battery and receiver to increase voltage and keep it constant:

http://www.ebay.co.uk/itm/350963713406?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649