Ofna DM-One Brushless Conversion (DM-1)

[ssspconcepts]

Originally Posted by dangerwr

Nice. I will probably go with the Novak conversion kit but I really like the idea using the RCPD top diff plate. Puts the ESC out of the way and makes room for battery tray. I can not wait to do my build. I was thinking of using Novak's HV 4.5 but believe that motor is 5000Kv and may get a little hot in the old parking lot. I was hoping for a +60mph car .

5S with a 2200kv Neu can easily be geared for 60+ mph...especially with this rig because it is very light and it will be a road car.

The EL8 RCPD top plate is nice but I recommend you get the one for the Jammin because I had to drill out the mounting holes quite a bit before everything would line up perfectly. I finished the mount by using some flanged spacers/washers so it would look nice and tidy.

Originally Posted by ssspconcepts

5S with a 2200kv Neu can easily be geared for 60+ mph...especially with this rig because it is very light and it will be a road car.

The EL8 RCPD top plate is nice but I recommend you get the one for the Jammin because I had to drill out the mounting holes quite a bit before everything would line up perfectly. I finished the mount by using some flanged spacers/washers so it would look nice and tidy.

Gotcha. I will pick up the top plate for the Jammin' buggy. How light is the car compared to a 1/8th buggy? Also, it seems that you knew to upgrade the diffs--will the stock ones not hold up very long under BL?

[ssspconcepts]

Originally Posted by dangerwr

Gotcha. I will pick up the top plate for the Jammin' buggy. How light is the car compared to a 1/8th buggy? Also, it seems that you knew to upgrade the diffs--will the stock ones not hold up very long under BL?

The stock diffs were plenty robust...I had a spare set of the spiders. I figured I'd use the spiders since I had them handy and they are smoother than the stockers. Not exactly sure, but the car is probably 10-15% lighter than the Jammin buggy-IMO. It is considerably lighter than my BL Jammin CRT, which is set up with the same conversion stuff.

Originally Posted by ssspconcepts

The stock diffs were plenty robust...I had a spare set of the spiders. I figured I'd use the spiders since I had them handy and they are smoother than the stockers. Not exactly sure, but the car is probably 10-15% lighter than the Jammin buggy-IMO. It is considerably lighter than my BL Jammin CRT, which is set up with the same conversion stuff.

Are these the Spiders you are using?
http://www.amainhobbies.com/product_...ducts_id/24323

http://www.amainhobbies.com/product_...ducts_id/24324

Not exactly cheap! I think I can find them on eBay for a bit less. Not sure but will probably run the stock ones in the F/R but replace the center diff with a Spider. You mentioned there was a fit issue or is it a direct fit?

[ssspconcepts]

Originally Posted by dangerwr

Are these the Spiders you are using?
http://www.amainhobbies.com/product_...ducts_id/24323

http://www.amainhobbies.com/product_...ducts_id/24324

Not exactly cheap! I think I can find them on eBay for a bit less. Not sure but will probably run the stock ones in the F/R but replace the center diff with a Spider. You mentioned there was a fit issue or is it a direct fit?

Those are the ones. If you drop in a center diff, you will have to replace your rear center drive shaft with a different size...I have a spare if you need it.

Originally Posted by ssspconcepts

Those are the ones. If you drop in a center diff, you will have to replace your rear center drive shaft with a different size...I have a spare if you need it.

Thanks! I will let you know once I actually get down to it. I am wondering about that solid center shaft that another member posted the link on Tower or the Spider center diff. Is there an advantage to using a true differential over a solid shaft?

[ssspconcepts]

Originally Posted by dangerwr

Thanks! I will let you know once I actually get down to it. I am wondering about that solid center shaft that another member posted the link on Tower or the Spider center diff. Is there an advantage to using a true differential over a solid shaft?

I don't know yet...

My preference is to use either center diffs or trannies with a slipper. Mike's slipperential...when it is released...will do both!

To answer your question...you can simply install the collar that comes with that center solid shaft on the DM-1 stock 2-speed. It should work fine....when you get to that point there are plenty of members here that can help.

[BrianG]

Originally Posted by dangerwr

...I am wondering about that solid center shaft that another member posted the link on Tower or the Spider center diff. Is there an advantage to using a true differential over a solid shaft?

I personally like the solid shaft. A center diff unloads too much and spins the front tires unnecessarily and you lose power. Unless you put really thick oil, and then where is the benefit? Maybe on a track where cornering is vital, but these have so much power that it's easy to drift around the corner if you want to turn tight.

I don't know what benefit a torsen diff (if that's what you mean by "spider") would offer. I can see using it in the front or rear to keep one side from unloading on corners. But the combination of stiff suspension and sway bars helps that a lot. Otherwise, it kinda acts like a solid shaft if used in the center...