Airwave

iTrader: (1)

Hi everybody, theoretical question:

Has somebody already presented the potential effects of the combination of a powerful motor and the longitudinal position of it on the behaviour of the car?

I think I really need a scientific explanation of this mystic longitudinal rotational momentum on the A700...

Thanks a lot...

bertrandsv87

iTrader: (2)

Airwave, please watch the ets videos on the redrc site , and you will see how the A700 handles the power of the latest mod motors. I think Freddy could have used a more powerful motor in Poland....

Airwave

iTrader: (1)

I've seen these videos, but I was asking for some physical explanation about the potential "torque steer effect"...

mos-leung

i saw the video too.
But i have question of : is the A700 - special damper compensate the torque steering OR the car still have the effect but the driver compenate this on video.......

daleburr

Neither; torque steer is almost zero with brushless motors due to the small-diameter, light-weight rotors (compared to the big, heavy brushed armatures that caused shaft-drive to be abandoned by the main car manufacturers).

The effect will also be minimised to some extent by the prop and spur gear which rotate in the opposite direction to the rotor.

You could totally eliminate it by adding a small flywheel to the prop-shaft (like on AEs 200mph car), but I doubt this is necessary.

hana166

iTrader: (2)

Its a non issue for A700 owners. You've got the whole internet resource on vehicle dynamics regarding full size vehicles, most use an inline engine, likely there is a really good explanation out there.

theatriks

iTrader: (8)

Can someone explain how oleg handles the orders he gets ....im not used to not receiving any order confirmations or any emails sayin payment received.....i paided friday and still nothing not even a confirmation of payment received.......everywhere else i order from would have sent me a tracking number by now????????

MDawson

iTrader: (27)

Usually the system generates an invoice after order. *I Think* payment confirmation is a manual process as it can be either bank transfer or paypal.

I would give Oleg & Co. a day or so. Perhaps the weekend + ETS race in Poland added some delay.

bertrandsv87

iTrader: (2)

Freddy's car was flying ,eventhough he made too many mistakes.. As far as torque steer in symmetrically designed shat cars, I think it's negligable, and would only be noticeable while racing in the rain with a mod car.... All I own is shaft cars, brushed/brushless/nitro, and I only loose the rear when my rear diff is too tight....

bertrandsv87

iTrader: (2)

Anybody using a 3.5t motor in the A700 yet??? If so, how does it hold up to the power ????

erchn

iTrader: (7)

I run a 4.0, no issues. The steel bushing in the rear dog bones wear, but that type of wear is expected. I have probably 10 race days on them, I just flip them over every other race day.

bertrandsv87

iTrader: (2)

Isn't a 4.0 milder than a 3.5t ??? Nobody running a 3.5t or lower(2.5t) in the A700???

bertrandsv87

iTrader: (2)

Wouldn't the increased efficiency of the A700 compared to belt cars make people want to try more powerful motors than a 4.0t ? Ie 3.5t , 3.0t , 2.5t....????

erchn

iTrader: (7)

Yes, those faster motors can and do work fine. The real question is whether that much motor gains you anything. Can you keep the car smooth and fast. As with all racing, more motor doesn't always equal faster times.

bertrandsv87

iTrader: (2)

I think the A700 can be pushed harder, but after spending nearly $1000 on the kit , people tend to baby the Car around the track rather than push it... I doubt I'll find anybody here with 3.5t + motors in their cars!!!