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View Full Version : Byebye's Porsche 906 86mm class build thread


byebye
2014.03.23, 09:19 PM
Well I received this body from Mr. Arch2b this past race weekend as we are switching to 86mm class in a few months. Everyone knows how high this body sits on the chassis and me being me I really dislike it...Anyway I chopped it up and made some chassis changes and this is what I came up with. Enjoy!

To make this work-

Grind the inside of the front of the body
Remove and modify the side mount area so that you can get it seated as high up in the body as possible
Reverse the king pins
PN Racing RM motor mount
17mm round motor by Atomic
Use the F40 carbon front body mount with the PN adapter and flip the adapter
I used the stock wheels and tires. The rears are from the asc. The fronts are Kyosho 40

I am also running the PN 90RM mount and multi-length disk damper. I used the stock kyosho plastic rear shock post mounted to the motor mount without the aluminum stand-offs. I just ran a machine screw through the top down into the motor mount.

I ran a few laps and no issues!:). I really thought the rear would rub but it doesn't. It could use a wing and the tires will need to be taped or glued.
http://mini-zracer.com/mini-zgallery/data/1454/side1.jpg
http://mini-zracer.com/mini-zgallery/data/1454/Side_profile1.jpg
http://mini-zracer.com/mini-zgallery/data/1454/top1.jpg
http://mini-zracer.com/mini-zgallery/data/1454/Chassis_flushness.jpg
http://mini-zracer.com/mini-zgallery/data/1454/bottom.jpg
http://mini-zracer.com/mini-zgallery/data/1454/front_suspension1.jpg
http://mini-zracer.com/mini-zgallery/data/1454/Chassis_top_2.jpg
http://mini-zracer.com/mini-zgallery/data/1454/Transponder.jpg

lfisminiz
2014.03.23, 10:01 PM
Sweet looking!

byebye
2014.03.23, 10:19 PM
Sweet looking!

Thank you.:)

I had to nip the kingpins and that made a huge difference in the handling. I guess it was dragging.

I did use some 30 fronts and those are the right tires for race day. The 40's give you that slight bit of understeer needed for those stock asc radial tires.

The grip at our track is pretty consistent so I imagine the 40's will work. I haven't searched yet if they make a high grip radial for the 906.

Traveler
2014.03.24, 08:34 AM
Nice! What are your thoughts on the 35T Plus?

byebye
2014.03.24, 04:22 PM
Nice! What are your thoughts on the 35T Plus?

It's smooth and not a torque monster like the regular T2. It's way too much motor for this setup. Could be better with a 70t but I haven't tried that yet.

Added some chassis and transponder pic.

arch2b
2014.03.24, 07:29 PM
What rear damper is that? I have the Kyosho oil shock on mine and that eats up space I could use for the transponder

byebye
2014.03.24, 08:15 PM
What rear damper is that? I have the Kyosho oil shock on mine and that eats up space I could use for the transponder

It's the PN damper.
http://mini-zracer.com/mini-zgallery/data/1454/motor_pod_and_damper.jpg

arch2b
2014.03.24, 10:32 PM
what other options are available for the nose clip? that seems to be the biggest stumbling block as i only use the stock plastic nose clips. i'd like to get mine down at least half as low.

what did you use to get he body clips out? mine are in there night and tight.

byebye
2014.03.25, 06:40 AM
what other options are available for the nose clip? that seems to be the biggest stumbling block as i only use the stock plastic nose clips. i'd like to get mine down at least half as low.

what did you use to get he body clips out? mine are in there night and tight.

Other options are styrene only. Styrene with the PN adapter or matching a mount dimensionally from another body and modify it.

I think you should get the adapter and a sheet of styrene and go at it:D

To get the body clips out I used a small flat tip and pried them gently. You will need to trim the mounts inside the body and don't forget to shave a little off the top of the clip(45deg cut). The body is very curved there and the clip will not seat fully if you don't trim. Just remember to dry fit everything before you glue.

arch2b
2014.03.25, 07:45 PM
well, tried to pop the mounts off very carefully and they took 90% of the fins with them so looks like that is a bust for me:( lets hope goop can hold them in. i set them 2mm down from bottom out on the body so it's at least a 2mm drop. i poured goop in the front end to make sure the buckets don't break out as well.

byebye
2014.03.25, 09:56 PM
well, tried to pop the mounts off very carefully and they took 90% of the fins with them so looks like that is a bust for me:( lets hope goop can hold them in. i set them 2mm down from bottom out on the body so it's at least a 2mm drop. i poured goop in the front end to make sure the buckets don't break out as well.

Darn...I've contemplated getting the white body and doing it right instead of trial and error. 2mm is more than before and still a significant drop.

lfisminiz
2014.03.25, 10:09 PM
well, tried to pop the mounts off very carefully and they took 90% of the fins with them so looks like that is a bust for me:( lets hope goop can hold them in. i set them 2mm down from bottom out on the body so it's at least a 2mm drop. i poured goop in the front end to make sure the buckets don't break out as well.

Ray, had that happen to me already. I gooped hot glue on clip area. Worked great.

arch2b
2014.03.27, 08:55 PM
Ray, had that happen to me already. I gooped hot glue on clip area. Worked great.

filled with goop, then a layer of shoe goo to top that off.

now a bigger problem... the body is 2-3 mm lower and the stock RM pod is hitting the read deck lid. :rolleyes: looks like i need to go back to stock, don't really want to buy another brushless motor.

byebye
2014.03.28, 05:39 AM
filled with goop, then a layer of shoe goo to top that off.

now a bigger problem... the body is 2-3 mm lower and the stock RM pod is hitting the read deck lid. :rolleyes: looks like i need to go back to stock, don't really want to buy another brushless motor.

Really? I'm running the PN rm pod and a 17mm motor. Interesting. I would not have thought it would hit. Got pics?

arch2b
2014.03.28, 07:32 PM
see the attached. zero movement between the body and body.

byebye
2014.03.28, 09:27 PM
see the attached. zero movement between the body and body.

Yeah I can see it now.

byebye
2014.03.28, 09:34 PM
see the attached. zero movement between the body and body.

That PN mount is very compact. The 17mm motor is narrower than the most narrow part of the standard D shaped motor can.

arch2b
2014.03.28, 10:32 PM
i was trying to keep mine as stock as possible but it doesn't look like i'm going to be able to avoid an aftermarket motor pod, motor and possibly damper. at least i already have the motor pod and maybe damper...

for the nose cilip, i cut the spacer off the top of the stock clip and cut a new one from a parts tree and glued to the bottom. its only about a 1mm drop this way in the front but i don't have to buy anything to make it work.

optimaforever
2014.04.03, 02:34 AM
It looks muuuuuuch better lowered like that!
Congrats!:)

byebye
2014.04.03, 08:12 PM
It looks muuuuuuch better lowered like that!
Congrats!:)

Thank you. I'm waiting to see Arch2b's now.

arch2b
2014.04.03, 08:55 PM
the change isn't as noticeable on mine. i haven't done anything with it since discovering the motor is banging on the read deck. not sure i want to change the rear pod/motor or trade the body for an unmodified one.

arch2b
2014.04.04, 07:00 PM
here is where i've left off...


the recommended PN front nose clip parts
PN N tie rod
Atomic S6 wheels
repositioned body clips about 2mm higher
all else is kyosho cup car parts on stock brushless chassis