Chasis Design/Layout Thread
03-31-2008, 06:49 PM
#1
Chasis Design/Layout Thread
What is the best chassis design or layout in the market today and why? Basically there are two main chassis configuaration:
1) Center : Type R and TME4 who like the battery/motor down the center.
2) Side: motor on one side, battery on the other side, like Xray T2, MI3, Tamiya TRF 416, Hb Cyclone, etc.
What is the advantage of one over the other? Any unique charactestics for each? Which is better for carpet, asphalt racing and why?
We want to hear from engineer minds...explain your view and share your experience with us. Give us the science behind these cars
1) Center : Type R and TME4 who like the battery/motor down the center.
2) Side: motor on one side, battery on the other side, like Xray T2, MI3, Tamiya TRF 416, Hb Cyclone, etc.
What is the advantage of one over the other? Any unique charactestics for each? Which is better for carpet, asphalt racing and why?
We want to hear from engineer minds...explain your view and share your experience with us. Give us the science behind these cars
03-31-2008, 09:14 PM
#3
It's a tough call, as each has it's own advantages and disadvantages.
Center - The centralized placement of the motor and battery are good for reducing body roll, however this usually requires really wide diffs. (Look at a HPI pro3 or Losi JRXS) I'm not convinced this is the best solution, as this causes excess rotating weight, unless built from lightweight (and potentially weak) plastics.
Side - The problem with this layout, is balancing the chassis left-to-right. Adding weight is almost always required.
My .02 - A combination of the 2 designs, will probably be the next step taken by manufacturers/designers. Imagine a battery pack sitting off-set from center. (perhaps 3/4 of battery over center line) with a single belt running between the diffs, which have the same orientation. (pulley on same side of car). Oh, and yes, I know... this design would still be susceptable to weight balance problems, depending on the battery used. It would be less severe however.
Center - The centralized placement of the motor and battery are good for reducing body roll, however this usually requires really wide diffs. (Look at a HPI pro3 or Losi JRXS) I'm not convinced this is the best solution, as this causes excess rotating weight, unless built from lightweight (and potentially weak) plastics.
Side - The problem with this layout, is balancing the chassis left-to-right. Adding weight is almost always required.
My .02 - A combination of the 2 designs, will probably be the next step taken by manufacturers/designers. Imagine a battery pack sitting off-set from center. (perhaps 3/4 of battery over center line) with a single belt running between the diffs, which have the same orientation. (pulley on same side of car). Oh, and yes, I know... this design would still be susceptable to weight balance problems, depending on the battery used. It would be less severe however.
04-01-2008, 10:00 AM
#6
It's a tough call, as each has it's own advantages and disadvantages.
Center - The centralized placement of the motor and battery are good for reducing body roll, however this usually requires really wide diffs. (Look at a HPI pro3 or Losi JRXS) I'm not convinced this is the best solution, as this causes excess rotating weight, unless built from lightweight (and potentially weak) plastics.
Side - The problem with this layout, is balancing the chassis left-to-right. Adding weight is almost always required.
My .02 - A combination of the 2 designs, will probably be the next step taken by manufacturers/designers. Imagine a battery pack sitting off-set from center. (perhaps 3/4 of battery over center line) with a single belt running between the diffs, which have the same orientation. (pulley on same side of car). Oh, and yes, I know... this design would still be susceptable to weight balance problems, depending on the battery used. It would be less severe however.
Center - The centralized placement of the motor and battery are good for reducing body roll, however this usually requires really wide diffs. (Look at a HPI pro3 or Losi JRXS) I'm not convinced this is the best solution, as this causes excess rotating weight, unless built from lightweight (and potentially weak) plastics.
Side - The problem with this layout, is balancing the chassis left-to-right. Adding weight is almost always required.
My .02 - A combination of the 2 designs, will probably be the next step taken by manufacturers/designers. Imagine a battery pack sitting off-set from center. (perhaps 3/4 of battery over center line) with a single belt running between the diffs, which have the same orientation. (pulley on same side of car). Oh, and yes, I know... this design would still be susceptable to weight balance problems, depending on the battery used. It would be less severe however.
Another option would be saddle pack style layouts like the Xray T1 cars. It would work work Lipo, and 6 cell nimh, but 5 cell would need to adjust a bit.
04-01-2008, 10:03 AM
#7
That's what the Team Magic E4 tried to accomplish somewhat. The battery is offset to the left side, and motor is down the center, and servo and electronics are on the right side.
Another option would be saddle pack style layouts like the Xray T1 cars. It would work work Lipo, and 6 cell nimh, but 5 cell would need to adjust a bit.
Another option would be saddle pack style layouts like the Xray T1 cars. It would work work Lipo, and 6 cell nimh, but 5 cell would need to adjust a bit.
Last edited by Marcos.J; 07-29-2008 at 06:26 AM.
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