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

OSherman 01-18-2016 08:43 AM


Originally Posted by iti20090 (Post 14352544)
Still waiting with interest to see if anyone fits the new Tamiya Mx5 body on to the M03 chassis. My HPI version required butchering of the M03, something I care not to repeat ;)

Cheers
Dave

have yet to see one mounted on an M03.

but one of the Tamiya employees has been running a light-blue painted body on the M05 and it looks awesome!!

EricP 01-18-2016 09:11 AM


Originally Posted by OSherman (Post 14353042)
have yet to see one mounted on an M03.

but one of the Tamiya employees has been running a light-blue painted body on the M05 and it looks awesome!!

aw. you dont say :) it was nice until, :cough: Fred slid it 10 feet on its roof...

EricP 01-18-2016 09:18 AM

Here you go:
 

Originally Posted by iti20090 (Post 14352544)
Still waiting with interest to see if anyone fits the new Tamiya Mx5 body on to the M03 chassis. My HPI version required butchering of the M03, something I care not to repeat ;)

Cheers
Dave

Box stock M03
http://i142.photobucket.com/albums/r...ilds/mx5_1.jpg


Front sitting right as low as it will go on the chassis (box stock height)
http://i142.photobucket.com/albums/r...ilds/mx5_2.jpg


Pressed the chassis till it hit the ground
http://i142.photobucket.com/albums/r...ilds/mx5_3.jpg

sakadachi 01-18-2016 09:22 AM

EricP - body looks great. How did you achieve that semi-matte appearance on the canvas? :)

EricP 01-18-2016 09:28 AM


Originally Posted by sakadachi (Post 14353095)
EricP - body looks great. How did you achieve that semi-matte appearance on the canvas? :)

Thanks... this was one of two I did. The other is the blue one Osherman was talking.

Unfortunately for the general consumer, the roof was done with the (DISCONTINUED) Tamiya PS-55 Flat Clear.

sakadachi 01-18-2016 09:38 AM


Originally Posted by EricP (Post 14353116)
Thanks... this was one of two I did. The other is the blue one Osherman was talking.

Unfortunately for the general consumer, the roof was done with the (DISCONTINUED) Tamiya PS-55 Flat Clear.

Nice. :D But sorry to hear about the blue one's roof! :sweat:

Thanks for the info on the roof. I suppose we could plasti-dip the roof black then? :confused:

EricP 01-18-2016 09:44 AM


Originally Posted by sakadachi (Post 14353131)
Nice. :D But sorry to hear about the blue one's roof! :sweat:

Thanks for the info on the roof. I suppose we could plasti-dip the roof black then? :confused:

Ha! Thanks... I'd imagine plasti-dip would work, but its thick and textured and might have some weight to it... but hey, give it a shot.

howardcano 01-18-2016 10:24 AM

Okay, I know some of us might be concerned about TCS rules, but... Shouldn't a Miata have the top down, and a beautiful blonde driving it?

elecsual 01-18-2016 11:31 AM

M03 Stock Mini Challenge
 
M03 Stock Mini Challenge:
I decided to take up Ivan’s M03 Stock Mini Challenge using an old car and spare parts from mine and Adam's parts collections. I was given an old, well used M03S to work with. It had:
-bearings
-M03 C-Hubs
-M05 Aluminum Steering Blocks
-CVD axels
-Aluminum Yeah Racing shocks (that were built wrong)
-half worn S-Grip fronts with CA edges and M-Grip rears
-used Poche 911 short wheel base body.
Everything else was stock.

Modifications:
-M05 plastic C-Hubs on the car to make the suspension work. I didn’t have M03 Steering Blocks so might as well use the aluminum parts.
-Rebuilt the shocks with 3 hole pistons, 35W red front, and 30 blue rear all 57mm. This was the shortest I could go with the misc spacers I had. Was going for 55mm overall length.
-Dropped the ride height as far as I could. Its around 5mm-ish.
-Don't know the weight yet.
-I added 2 shims to the diff, MR Style.
-Added the WCICS Orca 2200kV and Hobbywing Justock ESC. Speed control got shoved in the tail section.
-Front toe is about 1.5. Didn't measure it though.
-Used a 2800mah round pack that the Paige boys lent me (Thanks Nick!)

Things to be fixed:
The stock servo saver is toast and is giving me huge deflection (10-15degress)so I was wandering down the straight. Also, the shock caps were cracked so the shocks kept popping off the ball. Usually pushed past the ball so I could keep racing. Going to replace those broken parts this week. Going to put a $10metal gear servo in it that was given to me.

Results:
I qualified 6th out of 23 at our club race. I was pretty happy with that and could have done better with a few less board taps. I ran my M05VII for the last qualifier and moved up to 4th and finished 3rd in the main.

My Assessment:
For an average racer with a couple seasons under their belt, a pimped out M05VII will be faster. On our track with 10s lap times, that equated to about 0.3s/lap for me which is not huge considering the cost difference of the cars and the 10s-13s/lap spread in the field. Put that M03S in the hands of a really, really, good driver and the difference will be less for sure. You can buy speed with upgraded diffs, lower CG’s, adjustable roll center, Aluminum shocks, lighter overall weigh, etc only if you can handle the car.

However, a basic car with a drivable set up can get you into the A Main with good driving. You probably can’t outdrive a very well setup and driven M05VII, but you might be surprised.

Verdict:
Either way, the key is controlling the car you have. Not chasing down setup perfection. Without spending a ton of money, a new racer can take a ready to run car, add bearings, two shims, S-Grips, oil dampers and let their skill dictate their finish, not their equipment.

I did this because I wanted to see how a newer racer could do with an old car and spare parts. We don't all have 10/15+ years behind the radio either. It was fun and I'm looking forward to racing it again next week with a fixed servo saver and shock caps.


Originally Posted by BoneCrusher (Post 14218772)
Decided to try something different this coming indoor carpet season. I wanted to see if it is it possible to have a competitive mini with the least amount of upgrades / hop-ups possible.

So I rebuilt my first mini: M03M. There's no aluminum hopups, no CVDs, no TRF shocks, stock gear diff, friction dampers and swift body.

https://www.tamiyausa.com/product/it...oduct-id=58368

http://www.tamiya.com/english/rc/rcm...8swift1600.pdf

So everything is rebuilt according to the manual except the following. Only new part is the 2 chassis halves. Everything else is original. Race ready at 1240 grams.

1. Extra washer on both sides in the stock gear diff and the 3 screws tighten as much and as evenly as possible. Added a hole in the chassis (thanks Monkeyracing) for future tightening.

2. Removed the rubber tubings inside the friction dampers. Yes, there is no dampening. Because the stock silver springs are so long (I can't get ride height low) and I didn't have the tools to cut them down, I ended up using short blue (hard) springs in the rear and short red (soft) springs in the front. I used those little horseshoe spacers to get the ride height around 5mm but a little lower in the front.

3. S Grip tires with the hard inserts front and rear with a bead of CA only in the outer front corner of the front tires. Didn't glue the sidewalls.

I ran the car twice at 2 different local clubs recently and also got to run it against 2 very good drivers at both clubs too. Unfortunately they both used their "B" cars. One a M03 and the other M05v1. Both race days my car were on par with both of them and in fact I think it looked amazing. Even the gear diff held up fine and stayed somewhat tight.

Compared to the M03 I've raced regularly for the last 5 years, the only weaknesses on this M03M I would say are:

- does not track exactly straight on the straightway.
- lack of high speed steering but really good in the slower technical parts of the track
- hard braking the rear slides to the right
- apparently lots of body roll reported by many at trackside which I can't see on the drivers stand.

I have 1 more club race before a big series race the weekend after to see how it really works. Based on the last 2 club races, I would say it's a top 10 car even if I used this car the last few years. I just need to solve a few little problems to make if a top 3 car.

I'm planning to try a few different things for the next club race:

- reinstall the shorten stock silver springs on all 4 corners
- take away the rear damper spacer inside both rear dampers which I think increases rear droop so more weight transfer forward off power and more grip to turn in the high speed corners
- maybe more toe out (originally eyeballed I'm guessing 1 degree out)
- maybe test the kit tires (tires are harder) in the rear so the car rotates better into the corner.

Wish I knew this 6-7 years ago that you actually don't need to spend much to make a mini "competitive".

Ivan


monkeyracing 01-18-2016 12:00 PM

Very cool to see this, Trevor. Did you try driving Ivan's bouncy clown car? (No damping at all!) I love watching that thing corner.

EDIT: If you eliminate the CVDs and the oil filled shocks, then you'll be on about equal ground with Ivan's car. Pretty sure we can scrounge up the right parts between all of us.

elecsual 01-18-2016 05:00 PM


Originally Posted by monkeyracing (Post 14353286)
Very cool to see this, Trevor. Did you try driving Ivan's bouncy clown car? (No damping at all!) I love watching that thing corner.

EDIT: If you eliminate the CVDs and the oil filled shocks, then you'll be on about equal ground with Ivan's car. Pretty sure we can scrounge up the right parts between all of us.

Thanks.
I'm not trying be on equal ground with Ivan. I wanted to see how I could do as a novice/intermediate with a similar car. I do want to get the CVA clear dampers though.

BoneCrusher 01-18-2016 09:32 PM


Originally Posted by elecsual (Post 14353724)
Thanks.
I'm not trying be on equal ground with Ivan. I wanted to see how I could do as a novice/intermediate with a similar car. I do want to get the CVA clear dampers though.

Good for you for experimenting and having fun doing so. I would still say try the Friction Dampers and Dogbones and see how that compares to what you have just tried.

For me, my mini is fun like crazy cause it's close racing with almost anyone yet frustrating as hell cause the timing to turn in a corner is completely different due to the massive understeer as the weight transfer from rear to front and vice versa is crap. I miss time a corner and I overshoot it like crazy and watch the car I'm racing with drive out of the corner and take off in front of me. Sucks but really forcing me to work on my push braking as I come up to a corner. Oil shocks would solve this problem but what's the fun in that other than making up 0.2 secs to 0.4 secs for around a 10 second lap. :D

Still a caution on the clear dampers. Fragile to say the least....mostly not from crashing into the boards but from someone t-boning you and snapping that top cap. Epoxy works. Have fun with that.

Ivan

monkeyracing 01-18-2016 10:00 PM

It proves a great point, in any case. With minimal hop ups, any mini can compete. A few items for performance and a few for durability and you're ready to go.

If you want to run plastic shocks, I've got a set of the black plastic super mini CVAs. Run side by side with regular shocks, there's no difference. Then again, it's hard to tell with only a few mm of travel. Threaded shocks are a lot more convenient. That's the big difference.

iti20090 01-19-2016 02:35 AM

Mx5 on M03
 
Rats, thanks Eric, unfortunately I got a here a bit late and missed the pics so still clueless - did it work?

Cheers
Dave

[QUOTE=EricP;14353089]Box stock M0

Front sitting right as low as it will go on the chassis (box stock height)

Pressed the chassis till it hit the ground

iti20090 01-19-2016 02:55 AM

Low shells on M03
 
I also ended up with TL01 or TB01 posts at the rear, to fit the Blue Groove Audi TT. With the Tamiya Alfa and HPI Mazda it was the steering servo mount that fouled and had to be butchered.

Much tut tutting about a FWD Alfa GTV but it did give me my first provincial TQ - till the mob found how easy it was to spin with a gentle tap from the rear ;-)

http://i189.photobucket.com/albums/z...TQ1forblog.jpg

http://i189.photobucket.com/albums/z...ue2publish.jpg



Originally Posted by monkeyracing (Post 14352630)
Hint for mounting low slung shells. Using m03 front body mounts at the rear makes things easy. Still hard to get that on an 03 though.



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