Redcat Racing Announces V4 Monster Truck

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designed2survive said:
Today there is indeed a market for it, the 5ive roller and Baja 5B SS are flying off the shelves.
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I looked at a Losi roller but here in Aus it actually works out cheaper to buy an RTR and change the bits you don't like (moor , pipe etc)
 
Personally the only reason id buy a roller is if i couldnt afford a rtr all at once. I don't care what engine comes in it, when that bad boy shows up at my house, i want to drive it. Then save up for upgrades.
 
Damebb75 said:
Personally the only reason id buy a roller is if i couldnt afford a rtr all at once. I don't care what engine comes in it, when that bad boy shows up at my house, i want to drive it. Then save up for upgrades.
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If you're planning on upgrading certain parts immediately (e.g. new radio or new engine) it makes sense to buy a cheaper version without those parts. The thing I don't like about rollers is that they're usually missing too many parts (e.g. the Losi 5ive roller would be interesting to me because I really don't think the 29cc is enough for that car and I would like to buy it without engine and get myself an OBR separately. However, their roller is missing a lot of other things like servos, radio, painted body which is not ideal)
 
Ice_2k said:
If you're planning on upgrading certain parts immediately (e.g. new radio or new engine) it makes sense to buy a cheaper version without those parts. The thing I don't like about rollers is that they're usually missing too many parts (e.g. the Losi 5ive roller would be interesting to me because I really don't think the 29cc is enough for that car and I would like to buy it without engine and get myself an OBR separately. However, their roller is missing a lot of other things like servos, radio, painted body which is not ideal)
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The Losi drivetrain is a lot more efficient than the Redcat so the smaller motor balances out
 
Phill said:
The Losi drivetrain is a lot more efficient than the Redcat so the smaller motor balances out
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Why the big difference? I'm not familiar with their setup, never saw one up close.
 
Ice_2k said:
Why the big difference? I'm not familiar with their setup, never saw one up close.
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Less gears in the drive line

You're looking at 10 gears on the Rampage VS 6 on the Losi 5ive..... Those gears on the Rampage's transfer plate add a lot of additional rotating mass losses.

The Losi pinion mates right up to the centre spur gear where as the Rampage has to go through 5 gears just to get the power to the centre spur gear.
 
Ah, ok. So even replacing the redcat gears with a belt drive, it would still have more gears than the Losi...
 
just a point of , dynamics of mass rotational , inertial , gear drag , certainly add to power loss, but also add to torgue from rotational mass , like flywheel power.

the 90 degree turn certainly is a loss for redcat gearplate compared to losi pinion center drive. but losi needs it! it is a heavy unit...plus the have planetary center to drive as well? not sure about that. there are plus on both , you certainly could do a belt AND 90 degree, belt drive losi!
 
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