just finished my 1/8 BL conversion!!!

[schiarelli]

its a sportwerks meyhem pro, i got it for real cheap. im actually suprised how well its built considering ive never heard of them before i purchased this. i used the novak HV 4.5 system (stolen from my e-maxx) and 14 gp3300 cells (its all i really have to work with, im a broke college kid). i fabricated the motor mount, a sleeve to fit the MOD 1 pinion on the motor shaft, and the battery hold downs. i just used come silicon sealant for padding under the batteries. the hardest part was definately figuring out the motor mount and the gearing situation. i was sooo suprised how smooth it is (compared to my e-maxx, its smooth like butter). but i did have one problem, the batteries got REALLY hot. i was only monitoring temp for the motor, cuz i figured it was all relative. once i got inside, i touched the batteries and they were really how, they read like 185F after about 30 seconds after shutoff. i hope they are still ok. so im runnin 46t spur and 12t pinion, i thought that would be fine, but i guess not...

this is my first conversion, so i dont really know what im doing fully. if you guys could just give me your opinions/suggestions, that would be great.

oh, and here are some pics :)

http://www.uvm.edu/~schiare1/Pictures/Pictures/RC%20Pictures/1_8%20BL%20buggy/101_1036.JPG
http://www.uvm.edu/~schiare1/Pictures/Pictures/RC%20Pictures/1_8%20BL%20buggy/101_1037.JPG

[vaderbxman]

That's an awesome Mayhem! I bet it rips!
http://www.esport-racing.de/images/smilies/rally_drive.gif

[SpEEdyBL]

How is the motor plate held on there? I would be concerned because my MBX R2 has a motor plate that is similar to that (although to the side of the diff) and it is held to the diff bulk with 4 screws, then there is a plastic piece that I made, which secures the mount to the chassis near the right mud gaurd. Even still, there is some flex, and I have already broken 2 motor shafts in 4-5 cycles of my 5000 mah max amps pack possibly because of that. Your setup looks like the motor mounts a little closer to the spur than mine though.

[schiarelli]

yea, i was alittle concerned also with my motor plate being sufficient support. it flexes alittle, but its pretty solid. i was trying to think of a better idea.

[glassdoctor]

The best thing you can do is make some sort of bracing at the rear of the motor... attatched to the rear chassis brace.

At the very least, you can shim the gap between the motor and the cut-out you made in the rear brace... and pipe clamp or zip tie it to the brace.

Doesn't have to be pretty... just lock it in place so it can't moved up and down.

[kufman]

The novak 4.5 is a rather high rpm motor for your application, might be why you got your batteries so hot.

[schiarelli]

ok, so what can i do? can i just buy a smaller pinion, or will that not do anything? ive seen pics of buggies with this system

[SpEEdyBL]

you could add another capacitor in parallel. That's what Bob Novak suggested when I emailed him about the Novak HV 4.5 in a buggy.

[glassdoctor]

Century makes pinions down to a 9 tooth. I would definitely pick up a smaller pinion. Swapping out for a 6.5 motor would help too...

[schiarelli]

you could add another capacitor in parallel. That's what Bob Novak suggested when I emailed him about the Novak HV 4.5 in a buggy.

did you try this? i dont have any capacitors on my motor at all....i have one off my esc.

[schiarelli]

Century makes pinions down to a 9 tooth. I would definitely pick up a smaller pinion. Swapping out for a 6.5 motor would help too...

i couldnt find then smaller than 12t online, do you have a link? that would be great

[glassdoctor]

http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXMGY1&P=M

[SpEEdyBL]

did you try this? i dont have any capacitors on my motor at all....i have one off my esc.

The capacitors are for the esc only. I was saying to add another one on the esc in parallel with the other one. I haven't done it yet since I haven't had much chance to run it much.