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Old 05-05-2012, 11:40 PM   #1
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Default Larger Pinion for OFNA DM-1 Spec E

Just finished building my DM-1 Spec E, and am disappointed that I can only get a small pinion with the stock motor mount. Have done some searching and cannot figure out what people are doing to get a larger pinion in this car. Any advice would be appreciated. Different motor mount? Different chassis? something completely different???

Thanks in advance.
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Old 05-06-2012, 07:35 AM   #2
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A bunch of guys in the Chicago area are using smaller spur gears. They have a local machinist mill down a center diff hub and are running as small as 36t mod1 spurs.
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Old 05-06-2012, 10:35 PM   #3
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Thanks Mooby64. I will check out options for smaller spurs as well.

I noticed on another thread that there is a carbon fiber chassis that appears to accomodate larger pinions. There is also an alternative motor mount, but I am not sure it will work. Anyone with experience with these options?
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Old 05-07-2012, 10:50 AM   #4
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mike @ rc-monster.com makes a single speed adapter for it you can use down to a 34 t revo spur (or whatever the smallest for the nitro revo) you go to http://www.rc-monster.com/rcm.php?pg=4 and order the 8mm and specify in the notes when you check out that its the traxxas revo spur edition. Good luck with the speed runs

You can fit the 46t ofna 2nd gear spur and a 19 tooth pinion stock im hitting 50+ with 4s and a 2700 kv motor

Mike @ rc monster also makes a dm-1 motor mount that would give more pinion options. The dm-1 mount is for the 1/7th but they are the same for 1/8th spec
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Old 05-09-2012, 03:30 PM   #5
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Thanks jayjay283. I really appreciate the information.
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Old 05-16-2012, 02:49 PM   #6
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I've used an hpi 42t spur on the stock spool. I recently swapped the locked spool for a kyosho center diff using 100wt oil and running a kyosho 44t spur. I also have a losi 43t and 40t spur option.

I'm currently geared at 27-44
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Old 04-20-2014, 01:25 AM   #7
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Default Ofn Dm-1 machined motor mount for huge pinion gears castle 1717

Hello just view this thread and want to share with you a new motor mount that i made for the dm-1.

This is a 10mm thickness 7075 aluminum motor-diff mount that accepts a huge variety of pinion gears from very small to huge ( 34t +).
It is made for the castle 1717 motor


but there is also another version for 1/8 bl motors (42mm dia)



As jayjay283 said, because of the compatibile parts that dm-1 1/8 and dm-1 1/7 has, these motor mounts is attachable to all the dm-1 series cars nitro and electric.

Soon it ll be ready a single speed spur gear adaptor and a battery-esc tray for 8s lipo aplications .

You can find more details at http://brushlessmaniac.blogspot.gr/2...brushless.html
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