***__ The 1/8 Onroad Think-tank __***

[jhautz]

how do you change the batteries in that thing? Looks like you have to take the drive belt off to get to the battery.

[jahno30]

Hey guys....
I too am doing a 1/8 conversion..

I have the power racing X8and was considerring the CC 2650 combo , but am unsure as to where to get a single gear conversion and also if a 4S 25c 4000 zippy rhino will be enough to push the car to some decent speeds

heres a link to the battery it's weight looks really good for a 1/8 onroad project. Just not sure if It'll be enough
http://www.hobbycity.com/hobbycity/s...idproduct=7656
let me know what you think

Originally Posted by jahno30

Hey guys....
I too am doing a 1/8 conversion..

I have the power racing X8and was considerring the CC 2650 combo , but am unsure as to where to get a single gear conversion and also if a 4S 25c 4000 zippy rhino will be enough to push the car to some decent speeds

heres a link to the battery it's weight looks really good for a 1/8 onroad project. Just not sure if It'll be enough
http://www.hobbycity.com/hobbycity/s...idproduct=7656
let me know what you think

I think you will have good speed with that combo of motor and battery. Where were you thinking of mounting the battery? Most 1/8th chassis have a clearance of 30mm between the top and bottom decks (yours maybe different).
Keep us updated with some pics as you progress.

P.S.
For those interested, I took some new video footage of my car last weekend. I have to edit up a clip as I used 2 cameras at the one time.

[jahno30]

Originally Posted by Countryhick

I think you will have good speed with that combo of motor and battery. Where were you thinking of mounting the battery? Most 1/8th chassis have a clearance of 30mm between the top and bottom decks (yours maybe different).
Keep us updated with some pics as you progress.

P.S.
For those interested, I took some new video footage of my car last weekend. I have to edit up a clip as I used 2 cameras at the one time.

I was thinking about using some 6mm carbonfiber, plastic, or plaxiglass flat spacers under the 5xscrews that hold the radio plate to give the additional height required and use plastic spacers on the chassis to possition the battery... I was even considering going with the 6S 4000 http://www.hobbycity.com/hobbycity/s...idproduct=7657 and switch the steering servo to lay on top of the radio tray to get the battery in but using a different kv motor.. My thoughts were the 2650kv combo maybe the better option if I could keep the weight low enough, but not sure if the run time will be any good........what do you think will work out better?

[Romster]

Soooo it makes me wonder if they will have an update version since the New serpent 966 is coming out. Time to go on Flea--bay for serpent 960 roller.

[samwong]

Originally Posted by Romster

Soooo it makes me wonder if they will have an update version since the New serpent 966 is coming out. Time to go on Flea--bay for serpent 960 roller.

Seems the brake mount block in 966 lays more forward than 960... which need to think a bit more on how to mount the motor....

Originally Posted by samwong

Seems the brake mount block in 966 lays more forward than 960... which need to think a bit more on how to mount the motor....

For anyone interested in doing one of these conversions, forget about doing them to Mugen's or Serpents. What you want to get is a Shepperd racing VeloX (click here) If you look closely they have done away with the disc brake on the transmission shaft and incorporated the brake into the rear axle/diff. What this all means is there is a huge amount of room to fit your motor and still keep the mechanical brakes.

[samwong]

Originally Posted by Countryhick

For anyone interested in doing one of these conversions, forget about doing them to Mugen's or Serpents. What you want to get is a Shepperd racing VeloX (click here) If you look closely they have done away with the disc brake on the transmission shaft and incorporated the brake into the rear axle/diff. What this all means is there is a huge amount of room to fit your motor and still keep the mechanical brakes.

What benefit (or problems) of using mechanical brake vs. motor braking ?
As I still testing the motor direct drive (45S/18P), braking to the car seems no problem up-to-now...

Shepperd design is great for conversion, but the drawback is lack of support and parts in Asia region.....

Originally Posted by samwong

What benefit (or problems) of using mechanical brake vs. motor braking ?

Mainly heat build up in the ESC. as the kinetic energy of the car is transferred to heat via the ESC FET's. (some energy does however also go back into the battery)

Originally Posted by samwong

As I still testing the motor direct drive (45S/18P), braking to the car seems no problem up-to-now...

I think there are pro and cons to both ways of braking.

Originally Posted by samwong

Shepperd design is great for conversion, but the drawback is lack of support and parts in Asia region.....

That would be a problem.


Have you got any video yet Sam?

[Romster]

Nice vid thanks. :)
I want a conversion for racing.
Shepperd new kit is like $800.
Just looking for a roller right now.
It would be really kool if Mike made a conversion.

[strodedawg]

what run time would a 1200 mah battery give you? i am looking at a 2500mah pack and i am worried about run time? i would be running 6s and trying reach around 60mph - what controller and motor do you guys recommend?

Originally Posted by strodedawg

what run time would a 1200 mah battery give you?

I would be running 12 1200 cells total, 6 in series and then 2 parellel, giving me 6S 2400 mAh.

Originally Posted by strodedawg

i would be running 6s and trying reach around 60mph - what controller and motor do you guys recommend?

Use a MMM and a high quality motor around the 2000-2200 KV. range.

[strodedawg]

i plan on running 6s 2500mah, mmm v3 and for the motor a neu 1515 (2050kv or a medusa 2000 kv 36-70 or 36-80. which motor should ichoose?

I use a NEU in my car. It's all I've ever had and has never given any trouble.

[strodedawg]

i have two 3s packs rated at 25c/30-35c and 2500 mah, will run in series for a 6s set-up. can these packs handle the amp draw? also what is a quick way to estimate amp draw on a system?