M-chassis 60Ds for carpet?

[TurnipJF]

With the arrival of my M-03 Suzuki Swift M-03M from Tamico, my thoughts have naturally turned to racing it. We race on a carpet surface, and I know from experience with my F1 that foams grip well while rubber tyres grip not at all. However 60D pre-mounted foam tyres seem to be non-existent. Even the smaller GQ 54mm ones are pretty rare.

 

Anyone know of a source of 60D foam pre-mounted tyres?

 

Alternatively, can anyone recommend a 60D rubber tyre and insert combo that will work on carpet?

 

Thanks!

[Backlash]

If its not against the class rules, what about just running some touring car foams trued down to a suitable size??

 

[TurnipJF]

No rules against it, but I don't own a tyre lathe. 

[Jason1145]

2 hours ago, TurnipJF said:

No rules against it, but I don't own a tyre lathe. 

I think you'll find that is ageist the rules, as is running these 3 cutie pies without some video evidence for us all to gawp at!

[Backlash]

2 hours ago, TurnipJF said:

No rules against it, but I don't own a tyre lathe. 

I used to just use my worn out touring car wheels..

You can use a drill, hacksaw blade and/or sandpaper to true foam tyres if need be..

[Kingfisher]

7 hours ago, Backlash said:

You can use a drill, hacksaw blade and/or sandpaper to true foam tyres if need be..

Got my curiosity going. How do you do that? Do you just run the car and hold the wheels against the tools to remove material?

[GooneyBird]

An M-chassis on foam is a recipe for traction rolling. On a TC they work(ish..) because most TCs have a far lower CoG than an M-chassis. Look at your TC, then look at your M03's steering servo perched up high over the front axle. Then look at your TC again. 
Exactly.

We race M-chassis on carpet, and we use either Tamiya M-grips or S-grips in 60D, or Sweep Slicks for 55D. The Sweeps have more lateral grip, but the lower diameter means slower top speeds. The M-Grips and S-grips work well on carpet, but require a bit of glue on the higher sidewalls to allow the tire to slide a bit before catching, else the car will still traction roll. 

I've raced an M05 Pro V2, used 60D M-grips up front and S-grips on the rear. This would introduce a slight understeer which was far preferable to the snap-oversteer that M-grips all around gave me. The front tires would have a coating of CA on the sidewalls, so that when (not if, when) the tire would fold under, the car would simply slide a bit, and not suddenly bite and polevault itself. (I've seen cars flip on 1 tire. Think all three in the air, one front tire on the ground, digging in and violently flipping the car)

You can't get pre-mounted M/S-grips, and they're on the pricy side. The Sweep slicks come pre-mounted on boy racer-y 5-spokes.

Cliffnotes: M-chassis have a tendency to bite and roll over. Introducing higher-grip tires will only aggravate this issue. Use either M-grips or S-grips for 60D, or Sweep slicks for 55D.

[Percymon]

There's also the Shimizu range, available in 60 size from RCMart at pretty reasonable prices

[Jason1145]

4 hours ago, GooneyBird said:

An M-chassis on foam is a recipe for traction rolling. On a TC they work(ish..) because most TCs have a far lower CoG than an M-chassis. Look at your TC, then look at your M03's steering servo perched up high over the front axle. Then look at your TC again. 
Exactly.

We race M-chassis on carpet, and we use either Tamiya M-grips or S-grips in 60D, or Sweep Slicks for 55D. The Sweeps have more lateral grip, but the lower diameter means slower top speeds. The M-Grips and S-grips work well on carpet, but require a bit of glue on the higher sidewalls to allow the tire to slide a bit before catching, else the car will still traction roll. 

I've raced an M05 Pro V2, used 60D M-grips up front and S-grips on the rear. This would introduce a slight understeer which was far preferable to the snap-oversteer that M-grips all around gave me. The front tires would have a coating of CA on the sidewalls, so that when (not if, when) the tire would fold under, the car would simply slide a bit, and not suddenly bite and polevault itself. (I've seen cars flip on 1 tire. Think all three in the air, one front tire on the ground, digging in and violently flipping the car)

You can't get pre-mounted M/S-grips, and they're on the pricy side. The Sweep slicks come pre-mounted on boy racer-y 5-spokes.

Cliffnotes: M-chassis have a tendency to bite and roll over. Introducing higher-grip tires will only aggravate this issue. Use either M-grips or S-grips for 60D, or Sweep slicks for 55D.

This is so useful for getting an idea about M chassis tyres... I'm guessing the 60D and 55D refer to the diameter of the tyre?

Which one is grippier... S or M grip?

Ive only got stock Tamiya tyres ( no letter like M or S) and some S-Grip tyres... the S grip are like glue compared to the stockers... where do the M-Grip tyres  fit in for grip in comparison?

For example, one of my M03M has S-Grip all round and traction Rolls a lot messing about on tarmac.. what can fix this? Less grippy tyres on the rear??

[TurnipJF]

Traction rolling... Hmm... Not a phenomenon I am familiar with. Until the arrival of the Yellow Peril (as I have christened it) my fleet consisted of a Mad Bull, an Aqroshot on Mad Bull wheels and a F103 - all cars with wide stances and relatively low CoGs. The M-03 is a new type of vehicle, at least for me.

 

I was concerned about lack of grip after trying my F1 on rubber tyres, and seeing my mate's M-05 sliding around on some sort of treaded Tamiya 60Ds (not sure of the compound), so I was hesitant to rely on rubber tyres for my purposes. These M-grips and S-grips - do they need inserts? If so, which ones? And what about traction compound? And are they better new or do they need to be worn in? Any and all tips appreciated!

[ncpantherfan71]

8 hours ago, TurnipJF said:

I was concerned about lack of grip after trying my F1 on rubber tyres, and seeing my mate's M-05 sliding around on some sort of treaded Tamiya 60Ds (not sure of the compound), so I was hesitant to rely on rubber tyres for my purposes. These M-grips and S-grips - do they need inserts? If so, which ones? And what about traction compound? And are they better new or do they need to be worn in? Any and all tips appreciated!

Yes they all will need inserts.  I have used the hard and regular Tamiya inserts and really didn't see a huge change in how it drove.  If I remember right the S grips are softer than m grips and the m grips are softer than the kit tires.   Tire sauce will really depend on what surface you are on,  kind of hard to give you annanswer there. All I ever did to new tires is remove the mold seam and go,  and sometimes I just left it and let it wear off.  I mainly ran on carpet and low traction was never a problem.   However too much was the norm,  if the outside edges were not glued it would roll in almost every corner unless you slowed way down. 

[ncpantherfan71]

8 hours ago, Jason1145 said:

 

For example, one of my M03M has S-Grip all round and traction Rolls a lot messing about on tarmac.. what can fix this? Less grippy tyres on the rear??

Next time you drive try to see if it is the front tires rolling over and causing it to almost flip up over the outside front tire or if it is rolling over both front and rear tires on the outside.   If it's flipping on the front,  try the kit tires on the front and see if that helps.   If it does,  try gluing the sidewalls of the S grips and put those on the front and see how it reacts. 

[GooneyBird]

22 hours ago, Jason1145 said:

This is so useful for getting an idea about M chassis tyres... I'm guessing the 60D and 55D refer to the diameter of the tyre?

Which one is grippier... S or M grip?

Ive only got stock Tamiya tyres ( no letter like M or S) and some S-Grip tyres... the S grip are like glue compared to the stockers... where do the M-Grip tyres  fit in for grip in comparison?

For example, one of my M03M has S-Grip all round and traction Rolls a lot messing about on tarmac.. what can fix this? Less grippy tyres on the rear??

S-grips are the grippiest of the two. You can feel the compound being softer than M-grip, which in turn is softer than the regular kit-tires. Though I would say there's a bigger gap between the M-grips and kit tires than there is between the S-grips and the M-grips. 

S-grip all around is asking for trouble, at least in my experience. On asphalt the fast guys tend to run M-grips all-around, and demi-gods run the kit tires up front. This makes the car understeer slightly, but when combined with a spool up front makes the car perfectly manageable. 

For on asphalt I'd start out with the kit-tires all around. This might make the car slide a bit more, but is way better than a car that's upside-down all the time. You can always combat the slidey-ness with either traction fluid or softer springs.

[Jason1145]

These are how the stock tyres can act...  full speed then letting off the throttle and immediately throwing the steering one way... a nice skid.... if I was to do this with those S grips I'm sure it would flip as you guys know.

 

[TurnipJF]

Aye, the kit tyres seem fine for tarmac, but we race on carpet. I think I'll try M-grips up front and S-grips at the rear, and hope for the best. Thanks for the advice!

[GooneyBird]

Usually with M-chassis it's not about a lack of grip, it's too much grip causing them to flip. Especially with an M03 with a high CoG this can get quite annoying. 

If you're in need of more grip on carpet you can always try to apply traction fluid to the tires. This softens up the rubber, upping the grip. In a pinch you can use WD40 if you don't have any specific traction fluid, but your fellow racers won't like the smell. 

[TurnipJF]

I have approved traction compounds for my F1 foam tyres. I presume these would work with rubber too?