Tamiya mini cooper
Tech Elite
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Picked up a M-05 pro and put in a Savox 1251 servo in it. I have traction roll with this car on our local carpet track (TQ Raceway). I feel like during a turn, the car is only on 3 wheels like it is rocking back and forth. Is this due to a fast servo? I am running sweep 28 premounts.
Tech Regular
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Picked up a M-05 pro and put in a Savox 1251 servo in it. I have traction roll with this car on our local carpet track (TQ Raceway). I feel like during a turn, the car is only on 3 wheels like it is rocking back and forth. Is this due to a fast servo? I am running sweep 28 premounts.
1. Add weight to your car at the front, lead shot behind the bumper helps; 1350kg is a typical weight for my cars.
2. Try lowering your ride hide at the front and slightly higher at the rear with yellow springs at the rear blue at the front.
3. I run a higher weight damper oil for indoor but start off around 50W and play with it from there.
Try doing small changes at a time and note the characteristics or the "feel" of the car from there.
John
Tech Master
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Tech Regular
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Yes Brad, you anticipated well and it aint going nowhere she's rock solid!
Infact the other handy hint is better traction up front as well
Infact the other handy hint is better traction up front as well
What works best on the M-05 as far as diff's go???
Ball diff or a gear diff that's been shimmed?
This would apply to a Tarmac setup, thanks!!!!
Ball diff or a gear diff that's been shimmed?
This would apply to a Tarmac setup, thanks!!!!
Tech Champion
iTrader: (108)
I always ran my M05L @1250g and it never traction rolled on carpet no matter how hard I threw it into the corner. And thats without swaybars as they weren't available last year. I'd start by making sure your low enough in the front. I usually run it about 3.5mm at the center up front and about 4.5mm rear. The glue on the sidewall will work...but you need to experiment with the amount of glue. A lot will sometimes take away too much steering. Id also use 40 wt oil f & r with short yellows up front and short blues out back.
Tech Fanatic
iTrader: (42)
m05
hello i run both put i perfer the ta03 ball diff also do not use balldiff grease for the diff balls use anti wear grease and make shure the diff is tight.
Picked up a M-05 pro and put in a Savox 1251 servo in it. I have traction roll with this car on our local carpet track (TQ Raceway). I feel like during a turn, the car is only on 3 wheels like it is rocking back and forth. Is this due to a fast servo? I am running sweep 28 premounts.
I am unsure of your driving style, but with the mini you need to be smooth, otherwise the car will traction roll. I also notice that you are using sweep 28's that are pre mounted, I know they make 25's, 33's and 40's but not 28's, must be another grade of tyre we do not get in Oz, however they may be part of your issue.
Have you tried other tyres or are they the gun type of tyres at your track. I would ask one of the fast guy's at the track for some tips and ask for assistance from him. They should be able to assits with some ideas. The Ca tip does work, however I have never tried it on a 55mm diameter tyre before. I think most people use it on the Tamiya M grip, Standard Kit tyre and S grip, so the side wall has less flex.
Ride height is the critical component on a mini when racing on carpet and using a tyre that will work on this surface. I have seen that Express mini tyres work well on the rear and HPI M grip fronts are good. This combination does not require the side walls to be glued as they are stiff. The use of a stiffer rim is advisable also, as the sweeps are mounted on a very flexible rim which may also be causing the issue. A stiff rim like Yeah Racing or the Tamiya Swift rim would be a better option. On asphelt or concrete surface the sweep rim would be better with a firmer fitted insert, depending on which end of the car it is fitted.
All of the information that has been offered is sound advice from experienced racers. As mentioned change one thing at a time and see if the handling changes. The extra weight works in Oz as with the BL system we have more grunt out of the corners and want more traction.
BTW
When I run on carpet, the only change I make to the car is the tyres and drop the ride height if I use 60mm Tamiya tyres. Everything else stays the same. If I use the 55mm tyre then ride height is already set.
Good luck with your racing.
Later,
Calvin.
Last edited by caltek1; 01-10-2011 at 11:01 PM. Reason: revised text
R/C Tech Elite Member
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The CA glue thing for carpet really only applies to the outside row of tread on the tire. Applying to the sidewall isn't necessary as the it won't roll under if the outside row of tread block is glued and allowed to slide a little.
How have you got your steering set? I ran my M-03 at 55-65% on sticky carpet. Made things a lot easier.
How have you got your steering set? I ran my M-03 at 55-65% on sticky carpet. Made things a lot easier.
Last edited by monkeyracing; 01-11-2011 at 06:55 AM.
Tech Master
iTrader: (55)
I was using 28's sweeps. Thanks for the tips guys. 55-65% of servo travel?
It's really interesting reading all the different opinions on Mini handling, some of which are complete opposites of one another and complete opposites of my experience!
One thing that is certain is that nothing stops grip-roll like glueing the front sidewall.
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In that case you must be running normal touring tyres on the car, because Sweep don't make a 28 for mini. 25, 33 & 40 only.
It's really interesting reading all the different opinions on Mini handling, some of which are complete opposites of one another and complete opposites of my experience!
One thing that is certain is that nothing stops grip-roll like glueing the front sidewall.
It's really interesting reading all the different opinions on Mini handling, some of which are complete opposites of one another and complete opposites of my experience!
One thing that is certain is that nothing stops grip-roll like glueing the front sidewall.
Now I run the shorter TRF mini shocks (no droop), super hard springs at the front and super soft at the rear with 40wt oil ... I'd say that's about the complete opposite
As for traction roll, throw more weight in the car, some minis get around fine weighing 1500 grams, try running wider hexes on the rear - 6mm and then 4mm on the front. Sway bar on the rear. Turn the amount of steering down, I get by with 70%.
Also try being smoother on the steering wheel, throwing full lock into the steering wheel every corner won't help ... and even braking before a corner and then powering through it can stop the traction roll.
Tech Master
iTrader: (9)
The CA glue thing for carpet really only applies to the outside row of tread on the tire. Applying to the sidewall isn't necessary as the it won't roll under if the outside row of tread block is glued and allowed to slide a little.
How have you got your steering set? I ran my M-03 at 55-65% on sticky carpet. Made things a lot easier.
How have you got your steering set? I ran my M-03 at 55-65% on sticky carpet. Made things a lot easier.