does the kb45 8xl need the rcm clamp
 

like it say does it need it

it will not fit. different can diameter

allright thanks oh would i need anything else to make it work in a erevo except for the single motor mount

no problem :D

alright thanks

The KB-45's bolt spacing is 30mm, and it uses 4mm screws. Standard 540 motors (36mm diameter) use a 25mm or 1in. bolt spacing, and 3mm screws. In other words, the KB-45 will not fit without modifying the motor plate, but even then there probably isn't enough material on the mount to let the motor sit properly.

It will fit in an e revo, as the side mount has a 30mm hole spacing option that will fit a m4 thread bolt. Only issue is that the kb45 has a 6mm shaft, so pinion choice is limited. Mike may be able to get the mod1 pinions made with 6mm bore...

Kershaw designs has the 6mm bore pinions... in a few different tooth choices.

I have run the L can kb45 motors with good success. Not bad temps and they sure are powerful. They do draw some amps so good batteries are required.

Check here: http://www.traxxas.com/PDF-Library/5605_manual.pdf page 31

how many amps do you think they draw

What voltage do you paln to run? I would say that a 6000mah 25c pack would be necessary for 4s.

For 5s and up a 5000mah 25c pack would be good. I would use enerland cell based packs, such as flightpower, polyquest, polyrc, thunderpower...

Stay away from maxamps, these motors will probably kill all but the 8000 packs..

i plan to run 6s on the 8xl as well i know about maxamps do you think that the zippyh 3s 5000mah 20c packs would work or are the enerland packs the only way if so where should i buy them

www.rclipos.com

Anything from there that fits the required spec.

Only is being that the erevo has limited space in the battery trays:

http://s115.photobucket.com/albums/n...atterysize.jpg

5000mah 20-25c 3s lipo that will fit will work well.

There is a youtube video of someone testing the Kb45 with a prop (bench mounted) to simulate a load- it pulled 130amps:

http://www.youtube.com/watch?v=wqN4fsWxKrU

Vids of the Kb45 in trucks:

http://youtube.com/watch?v=zxeY_ZqO504
http://youtube.com/watch?v=Mlc3gsyTQFI

is that the continous load or the bursts

I would aim for a battery that can handle at least 130amp cont....

I run the 8l kb45 in a 1/8 on road car, and it will push a pair of trakpower packs (4900mah 25c, 4s total) hard. You will run 6s, but you are also going to be spinning heavier tires, off road. These motors are great, and inexpensive, but will not like cheap bateries...

is it okay for the batts to have 125cs constant

So long as they arent from maxamps- I would treat that 125amp rating as more like 100amps otherwise. Take a look at www.cheapbatterypacks.com for the rated and real-world specs of some similar lipos.

no they aren't from maxamps they are from thunderpower

would the poly rc 3s 5000mah30c batts work and fit inside the compartments

Geogenesis, do some thinking for yourself. I'm sure you don't need your hand held to go to the toilet, so i'm sure you can figure out if the polyRC packs will fit into the e-revo.

It is indeed a matter of common sense. The dimensions above are accurate, so it will be obvious if any given pack will fit or not (a 30mm high pack will fit (just), a 31mm high pack will not).

This aint the traxxas forum anymore, a little more free- thinking and experimentation is called for to figure out ones own questions, especially when they are such simple ones.

okay i get that but i just want to know how a 3s 4500mah 30c pack is longer than the 5000mah 30pack

the 5000 is most likely taller.

Think of battery capacity like water in a bottle. You can have a liter of water in bottles with different shapes and sizes, but the volume is still 1 liter. Same thing applies to battery capacity. Lipo capacity and volume are directly proportional in most cases when talking lipos.Try to understand what i have said and it will all become clear.

So how do maxamps packs always seem to be smaller than the comparable spec enerland cell based packs? (this is sarcasm)

What you say is quite true, however reformulation can lead to smaller cells of the same capacity. Just another way that I know that maxamps specs are bogus....

allright i see what you mean so should i know about anything else