Can you re map a 700cc smart to 100bhp?

[FT07_AMG]

Re: Can you re map a 700cc smart to 100bhp?

What's this thing about brakes and suspention? My Mk7 will stand on it's nose under braking and handles very nicely thank you. I think everyone is hung up on Focus handling. ie. heavy and dead!

[phoenix3dfx225]

Re: Can you re map a 700cc smart to 100bhp?

I speak from experience, threw my first smart of the road 3times!! and rolled my 2nd once, until I replaced the suspension to lower and stiff. Oh the car has NO UNDERSTEER anymore and handles an infinite times better (well haven't crashed yet since).

I have been converted to the belief that handling should be improved first before going faster now.

[RoadsterMike]

Re: Can you re map a 700cc smart to 100bhp?

I'm cursing myself here but I've got a 54-plate Roadster-Coupe running 120bhp and it's just hit 34k...

[knightfall]

Re: Can you re map a 700cc smart to 100bhp?

In response to Massive about "if i need to ask then i'm reading the wrong section" all I was saying is that you don't need 100 bhp in a smart car for everyday road use - sure it's fun now and again but can you use it every day ? No I don't think so ( and in case you may think I don't know what i'm talking about, you are correct in car terms but with motorcycles, I pretty much know a great deal, and anyway a horsepower is a horsepower right especially when you've been used to 145 of them )

[Massive]

Re: Can you re map a 700cc smart to 100bhp?

a horsepower is a horsepower right

Ah, this is why you don't get it.

Hp is relative to mass, torque, areodinamics.....

100 hp on a bike is nothing like 100hp in a smart.
Power to weight etc.

[knightfall]

Re: Can you re map a 700cc smart to 100bhp?

How do you work that out ? as a bike is on the whole, lighter, faster, more aerodynamic, need I go on ? I'm just saying that a 100 bhp smart cannot be used at ten tenths of it's performance every day, it's just not practicable ( and besides, the rozzers will get ya )

[FT07_AMG]

Re: Can you re map a 700cc smart to 100bhp?

I speak from experience, threw my first smart of the road 3times!! and rolled my 2nd once, until I replaced the suspension to lower and stiff. Oh the car has NO UNDERSTEER anymore and handles an infinite times better (well haven't crashed yet since).

I have been converted to the belief that handling should be improved first before going faster now.

It sounds to me like your driving the car far beyond it's abilities. It's a city that has remarkably good handling for it's package. It isn't a ferrari or a lotus and can not be expectred to handle as such no matter what you do to it.

I suggest you need to learn to feel what the car is doing more and temper you driving to suit. You can still go quickly, just drive less agressively. Consentrate on getting the lines right and feeding the car into corners not snatching it round, which is the common reason people get understeer. Load the suspension and tyres steadily and you'll be amazed just how quickly it will actually go round corners.

[blondster1983]

Re: Can you re map a 700cc smart to 100bhp?

In response to Massive about "if i need to ask then i'm reading the wrong section" all I was saying is that you don't need 100 bhp in a smart car for everyday road use - sure it's fun now and again but can you use it every day ? No I don't think so ( and in case you may think I don't know what i'm talking about, you are correct in car terms but with motorcycles, I pretty much know a great deal, and anyway a horsepower is a horsepower right especially when you've been used to 145 of them )

I use the extra power on mine every day... Generally just for fun, but I use it to get up to speed when pulling onto bypasses etc.

It's very useful...

No, I don't use it all the time, but noone uses all the power of their engine all the time...

[Massive]

Re: Can you re map a 700cc smart to 100bhp?

I'm just saying that a 100 bhp smart cannot be used at ten tenths of it's performance every day

Full power 104 bhp is delivered at 5300 revs in 4th gear on my car.
No I do not use 104 bhp every second of the day. I do use it at least twice.

The max power is not what I use, but the increased delivery at lower revs because I have 104 bhp max. Higher max, better mid and low range.
Everyday as I pull away from my drive, its quicker to and smoother at 20mph and up. Its not whos got the highest bhp, its about driverbility day-to-day, that the higher bhp provides.

[ZorroReturns]

Re: Can you re map a 700cc smart to 100bhp?

An example of where lots of power goes wrong : motor bike engine in smart.

Lots of power,speed, revs but that produce relativly little torque.... meaning you have to thrash the thing and look like 'cunning stunt' even at slow speeds.:p

But when its in zone its very much a great idea and fun!

100bhp is possible but like the motorbike engine has very short power zone and day-to-day practical.

I would rather have a good healthy 90PS with a good torque power.
Hang on! I have ........ohh and its very day to day useable.

[Koul]

Re: Can you re map a 700cc smart to 100bhp?

If the torque figure can match the bhp figure of 100 and deliver it reasonably low down the rev range then the smoothness and pick up are very noticeable in a smart. A good remap is also essential with the fuelling being just right.
The power is very useable because there is a lot in reserve even if you don't use the full 100bhp every time.
Driving a smart with this level of power and sensible induction modifications is a real joy and makes the smart a more fun car than it already was .

[Noger]

Re: Can you re map a 700cc smart to 100bhp?

The torque figure will ALWAYS match the bhp figure - as long as the engine can rev over 5252 rpm !

In the example above, 104 bhp @ 5300 is pretty much 104 ft.lbs. Remember torque and power are the same thing viewed from different points of view (engine power is the rate at which it can deliver torque to a rotating shaft).

What makes cars "driveable" (as opposed to fast, differnt conversation that one) is how much of that torque is available lower down the rev range. That is the nice thing about turbos - they give a pretty flat torque curve from when they kick in.

What makes things like the Honda S2000 a bit of pain (but fun if you are in the mood) is that the most torque is produced so high in the rev range. You have to keep in on the boil. But this is not true of all high revving engines.

Which brings us neatly to bike engines - which although they don't produce much torque AT THE CRANK they do however produce lots (well more) of torque AT THE WHEELS due to their high revs.

My GSXR1000 engine is producing something like 80 ft.lbs - not much more than a Fortwo ! BUT it is producing it at 9000 rpm. Which means at the wheels, assuming I am gearing down by a factor of two, the same amount of torque as an engine producing 240 ft.lbs at 3000 rpm going the same speed. As much as many tirbo diesels.

And it is not peaky either, I am getting over 65 ft lbs from 4000rpm - which sounds high until you factor in that this is just over a third of the way up the rev range. That is like getting 80% of max torque @ 2000rpm in Smart.

[ZorroReturns]

Re: Can you re map a 700cc smart to 100bhp?

Which brings us neatly to bike engines

ahhhhh a moped rider. :red:

[knightfall]

Re: Can you re map a 700cc smart to 100bhp?

Noger, you wanna try a gsx 1400 like what I had - 92 ft/lbs torque @ something silly like 4000 rpm ! Talk about drivability ! now that would be a good, tractable bike lump to chuck in a fortwo

[Noger]

Re: Can you re map a 700cc smart to 100bhp?

Nice idea ! I have driven a Phoenix with a Honda Pan-European engine. Similar rpm range to a car engine and it drives like it too. Which makes it very tractable, but the downside is the low revs don't allow for that mechanical advantage at the diff. Still prefer 11,500 rpm although not perhaps for everyday use.!