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-   -   Tamiya mini cooper (https://www.rctech.net/forum/electric-road/20068-tamiya-mini-cooper.html)

eR1c 03-23-2016 10:09 AM


A little curious to know Eric how it holds up under race conditions. I have to show your pix to my Dad so we can copy your design and try it on our minis!

Yep kind of wondering if the fan would vibrate from the driving? Anyway looks good.
The photo makes the apparatus look much larger than it is, it really is quite small. Everything is very tight and rigid, -there isn't any bounce or vibration to it. The plastic is really short and thick, so it doesn't flex. I also used screws that really dug into the plastic of the apparatus I made so there wouldn't be any slipping/movement over time.
The whole thing is really solid. I've only driven it in my driveway and it appears to hold quite well. I have my first race with it not this weekend, but the following. So i'll let you know what the motor temps are w/ it this way and how it holds up. I'll have a good sense after the first race heat, -if its no help, then i'll go back to the previous set up before the 2nd heat (fan blowing down from up top) ...which I ran all last year.

My moto temps w/ no fan were about 165, my lap times were several tenths of a second slower in the last laps. W/ the fan mounted directly above my motor temps were around 155, still a little slowing in last laps, but not quite as bad. So I am hoping having the fan directed at the motor will get my temps down even more ...145??? And give consistent lap speeds for the entire 6mins. of run time.

eR1c 03-23-2016 10:11 AM

V3 of my fan mount may include an ice cube with a mister that sprays chilled air at the motor. Just pop new ice cube in before each race. ;)

eR1c 03-23-2016 10:17 AM

1 Attachment(s)
..here is a side profile of my car. Sits really low.
Using the block method that Antlockyer mentioned, my car is about 5-5.5mm in front and 4.5mm in rear.

antlockyer 03-23-2016 10:36 AM

Thanks for that. My current setup is slightly higher at the rear, but I'm hoping that will be offset by much softer spring rate and a grippier tyre. Racing on Friday night for the first time at my local club so will report back.

I've added a pic side on in my album

sakadachi 03-23-2016 10:43 AM


Originally Posted by eR1c (Post 14460728)
V3 of my fan mount may include an ice cube with a mister that sprays chilled air at the motor. Just pop new ice cube in before each race. ;)

:lol: Kind of like a Cry02 intercooler for real cars. :D Good to hear your mount is solid.

On my TBLE02 ESC where it has no factory option for a fan, I use 2 thin plastic pieces about 10mm in width (less than a mm thick) mounted on the sides of the ESC to place a fan over the ESC heat sink. I use a very soft VHB mounting tape to allow vibration to be damped within the mounts. It helps dampen the cheepo fan's imbalance too as one time without this setup, the fan was buzzing the entire chassis.. :weird: :lol:

sakadachi 03-23-2016 10:45 AM


Originally Posted by eR1c (Post 14460742)
..here is a side profile of my car. Sits really low.
Using the block method that Antlockyer mentioned, my car is about 5-5.5mm in front and 4.5mm in rear.

Huh, you have reverse rake on your V2. Interesting. My FWD's have considerable rake (front lower than rear). :)

eR1c 03-23-2016 10:47 AM


On my TBLE02 ESC where it has no factory option for a fan, I use 2 thin plastic pieces about 10mm in width (less than a mm thick) mounted on the sides of the ESC to place a fan over the ESC heat sink. I use a very soft VHB mounting tape to allow vibration to be damped within the mounts. It helps dampen the cheepo fan's imbalance too as one time without this setup, the fan was buzzing the entire chassis..
Would love to see a photo of this so I can visualize.

eR1c 03-23-2016 10:50 AM


Huh, you have reverse rake on your V2. Interesting. My FWD's have considerable rake (front lower than rear).
Yeah, I found this way works really well for me.

sakadachi 03-23-2016 10:50 AM


Originally Posted by eR1c (Post 14460779)
Would love to see a photo of this so I can visualize.

Here's an example on my M-Rage. :) This is the 105BK, but you get the idea.

http://www.rctech.net/forum/members/...bsr-m-rage.jpg

sakadachi 03-23-2016 10:54 AM


Originally Posted by eR1c (Post 14460782)
Yeah, I found this way works really well for me.


I believe that there are probably many combinations to get an M-car to handle correctly ...this one works really well for me. LIke mentioned I can whip it around turns w/o so much as minimal slide at worst. 99.9% of the time it takes turns wonderfully.

Oh yeah, I wasn't implying the setup was bad, I am sure different driving conditions, etc will dictate how the car should be set up. :)

eR1c 03-23-2016 10:58 AM


Thanks for that. My current setup is slightly higher at the rear, but I'm hoping that will be offset by much softer spring rate and a grippier tyre. Racing on Friday night for the first time at my local club so will report back.
Yeah, your car does sit a bit higher than mine. If you are having your first race w/ your mini, ...make adjustments per how it does. My first season, actually 2 seasons were all about getting my car right. I built my car w/ about 7mm of clearance, -level, also body was mounted kind of high. So many other things were off, but basically my car looked like an old stage coach going around the course. It just handled like crap. Between practicing and racing I made small tweaks and took notes. 3 or 4 years later I've come to the setup I have now.

eR1c 03-23-2016 11:00 AM


Oh yeah, I wasn't saying the setup was bad, I am sure different driving conditions, etc will dictate how the car should be set up.
I didn't take it that way. :)

Yeah, that is what makes the M05xx so fun, there are literally probably dozens if not hundreds of setups that work. Most guys run S-grips all the way around, I could never get that to work for me ...I run slicks + s-grips ...found it works great (for me).

antlockyer 03-23-2016 11:00 AM

This should work now

http://www.rctech.net/forum/members/...3-17-25-41.jpg

eR1c 03-23-2016 11:02 AM


Here's an example on my M-Rage. This is the 105BK, but you get the idea.
Ah, got it. Hey, how do you like that vented motor heat sink? I had one on my F1 it kept falling off ...I tried bending it slightly to make it tighter, etc... no luck. I couldn't get it to sit securely on my motor. Its like it needs high temp tape to keep it glued in place. -hey there is an idea, maybe I'll give it another go? My F1 currently has no fan and no heatsink ...but runs a 21.5 and timing is turned way down ...it doesn't need speed so temps are always low. ...

sakadachi 03-23-2016 11:06 AM

eR1c - Yep, completely agree that there are many different set ups for these cars.

Hey Antlockyer - how do you like those Sweeps? I bought the med and soft but neither was a good match for my track surface. I love the shape of those wheels though.

I currently only run Pit Shimizu, the classic 55mm. :) I like how they are actually radial tires inside the rubber.


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