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Old 07-27-2005, 10:29 AM   #1
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Default Why ep 2WD buggy design different from 4WD

hi all
not sure if this been asked b4?

why is the motor for 2WD buggy located at the rear end?
4WD used to place their motors motors but all manufacturers switch to the mid/center
& oso, there's front anti-dive (not sure if tis is called) for the 2WD. the front shocks are tilted backwards

if i were to change a 4WD buggy to 2WD by removing the front pulleys/gears/ transmission, only left with the ones needed to run the rear. will the handling be same as the conventional 2WD eg. B4?

thx
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Old 07-27-2005, 12:21 PM   #2
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For as far as I know it is a matter of weight distribution. The rear end of a 2WD buggy and truck is very slippery. With the added weight from the motor and battery it improves grip on the rear.

I had my 4WD front belt broken during a race some time ago, but it did act very weird. In no way as good as a 2WD buggy. Too less grip on the rear side made me go 6 seconds slower than I normally did with 4WD. Also the jumping was a little different. Of course you can do something with the setup, but it would never go as quick as a 2WD.

Also converting your 4WD to 2WD on purpose is something I wouldn't advice you to do. These cars are simply not meant for doing this.

Greetz,
Mike
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Old 07-27-2005, 12:49 PM   #3
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The older rear motor 4wd cars were necessary at the time for the rough tracks that most offroad racing was held on. With the smoother tracks that have been much more common the last 15 years, the 4wd has been utilized more for cornering power.

2wd needs the motor out back over the rear tires since it doesnt have the extra pull of the front tires. The kickup in the front helps to take away a little corner entry steering and really helps with bumps.
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Old 07-27-2005, 06:08 PM   #4
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What are these old 4wd's with rear motors that have done so well ? my 1985 dogfighter won the worlds (not the exact one ofcourse), 87 it was a mid motor cat, 89 mid motor yoke...
So right at the start of the 4wd class the mid motor seems to have been a winner.
Motor is out the back of a 2wd for traction and balance, it slows the steering and makes the car easier to drive
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Old 07-27-2005, 08:33 PM   #5
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i dun recall any rear end motor 4wd competing internationally back in the 80's. the first ep 1/10 offroad was held in 1985 won by yokomo 1st dog? the motor is already in mid/center.

i came to realise tat back in the old days when 4WD had their motors in their rear, they were more like toy cars. they only started to be very competitive among each other when they move the motor to mid/center
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Old 07-27-2005, 08:40 PM   #6
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I think he is referring to the original Kyosho Optimas! There were other designs as well during the time, but the most memorable was the Kyosho cars. They had the motors in the rear and were pretty popular and competative at the time.
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Old 07-28-2005, 12:52 AM   #7
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HeY!!!


hmmm this is interesting, i never even knew they had 4wd w/ motors in the rear... if possible could u post some pics of them if u can find any... thanx...
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Old 07-28-2005, 03:12 AM   #8
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kyosho optima
http://www.tamiyaclub.com/showroom_m...=33586&id=7201

kyosho optima pro
http://www.tamiyaclub.com/showroom_m...=34164&id=1607

many old skool cars can be found here http://www.tamiyaclub.com

Last edited by taz5176; 07-28-2005 at 06:22 AM.
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Old 07-31-2005, 01:30 AM   #9
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I think that they were rear motor because they were tring to compete with a different design, remember when everybody had their own design(including 4ws 4wd)
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Old 07-31-2005, 09:56 PM   #10
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HeY!!!


taz.... thanx for the links thats the bro hook up....



LaTa
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