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Old 12-18-2008, 05:28 AM   #1
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Default Can I put a larger spur in Losi Conversion Kit?

I have a losi 8ight that I converted and got a great deal on a 1512 1.5d 3300kv motor. My question/concern is, that I wont get the gearing ratio low enough to get good temps/runtimes.

The losi conversion kit comes with 45t spur a 15t and 16t pinions. So can I fit a larger pinion instead of the 45T? I've heard of people using the kyosho 46t nylon, thats about it and prefer to stay metal for durability reasons. I've done a bunch of searches, so I apoligize if this is covered somewhere else already.

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Old 12-18-2008, 05:40 AM   #2
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You can run the stock 48 tooth, but you will have to put sapcers under the diff to raise it up and cut a clearance hole in the chassis.
You can get a 9 or 10 tooth pinion to work with your 45 tooth spur.
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Old 12-18-2008, 06:14 AM   #3
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If this is the original 8ight you have converted, you may need to buy the 8ight 2.0 rear CVD shaft to get the proper length. My friends 8ight-E (factory built that way) has a problem where the rear CVD shaft barely extends into the center diff cup. This is because the center diff is raised and that makes the required length of the CVD to be longer. Just something to look for when you convert.
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Old 12-18-2008, 08:09 AM   #4
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The nylon Kyosho 46 tooth spur gear works fine. It is quieter and has no durability issues and they are only 4-5 bucks each.
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Old 12-18-2008, 09:33 PM   #5
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You can gear down the diffs by using the Losi 8T diffs in your Losi 8ight buggy. I did this with my MBX5R. I am running the MBx5T ring & pinions in it and the gearing options are much better now.

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Old 12-19-2008, 05:02 AM   #6
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I love this forum, all great ideas. I think I'll go the diff route since I need to rebuild them anyway. Thanks a bunch fellas.

Dave
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Old 12-19-2008, 08:00 AM   #7
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If you rebuild your Losi 8ight diffs with the 8T ring & pinion (43/10T) gears and use the Neu 1512 1.5D motor, then use a 13T pinion with the 46T spur gear. That'll have a calculated top speed of about 41 mph which is perfect for that motor.
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Old 12-19-2008, 08:27 AM   #8
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He will have to run the 45tooth that came with the conversion unless he wants to mod stuff.
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Old 12-19-2008, 03:41 PM   #9
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Oh, ok so then a 13T pinion with the 45T spur gear would be @ 42.6 mph top speed which is still very good.
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