64LikesTA07MSX
10-05-2020, 09:32 AM
#4
I dig it!
10-07-2020, 07:25 AM
#7
Pure speculation at this point and could be wrong, but I suspect that the flex of this car would be somewhere between the original TA07MS and say a TRF420 (all in carbon spec). The major issue I had with the carbon chassis TA07MS on carpet was too much flex from the long and slender upper decks, even with all the aluminum posts/stiffeners attached it didn't help stiffen the car much. Most of it's flex was around the attachment points on the bulkhead.
Although the MSX has only a single vertical upper deck, they have a much shorter span than the MS. In addition, the upper deck being fixed by two screws on the motor side should further reduce the flex, the bulkhead side is also fixed by posts of much larger surface area than the button head screws which also help in this regard. I'm curious how the decks are fastened on the bulkhead side, whether the posts are threaded against each other with the deck sandwiched between to form a rigid connection, or if the upper deck is only held by some sort of key or dowel between the posts (I certainly hope this is not the case as it allows flex, almost floating).
I also wonder what the screw hole on the end of the lower bulkhead is intended for (the ones next to the upper deck fixing points), maybe for some kind of horizontal upper deck? (although it is uncommon for Tamiya to release chassis specific option parts for these TA/TB evolution chassis)
And about the aluminum chassis, is it 2mm or 3mm? The official text mentions both thicknesses so it's either a typo and comes with a conventional 2mm, or a 3mm chassis to compensate the extra flex from a single upper deck if my theory above is wrong?
The car would cost more than the TRF420 but hey it comes with both chassis in the kit.
Although the MSX has only a single vertical upper deck, they have a much shorter span than the MS. In addition, the upper deck being fixed by two screws on the motor side should further reduce the flex, the bulkhead side is also fixed by posts of much larger surface area than the button head screws which also help in this regard. I'm curious how the decks are fastened on the bulkhead side, whether the posts are threaded against each other with the deck sandwiched between to form a rigid connection, or if the upper deck is only held by some sort of key or dowel between the posts (I certainly hope this is not the case as it allows flex, almost floating).
I also wonder what the screw hole on the end of the lower bulkhead is intended for (the ones next to the upper deck fixing points), maybe for some kind of horizontal upper deck? (although it is uncommon for Tamiya to release chassis specific option parts for these TA/TB evolution chassis)
And about the aluminum chassis, is it 2mm or 3mm? The official text mentions both thicknesses so it's either a typo and comes with a conventional 2mm, or a 3mm chassis to compensate the extra flex from a single upper deck if my theory above is wrong?
The car would cost more than the TRF420 but hey it comes with both chassis in the kit.
10-10-2020, 03:03 PM
#8
Tech Initiate
Looks good!
10-10-2020, 08:34 PM
#9
Tech Master
Looks good but the price isn't. Would this be the flagship on-road car for IFMAR, ROAR, TITC, ETS, etc? What will happen to the TRF420?
10-10-2020, 08:49 PM
#10
Tech Adept
TRF420 will stay and besides, I don't think TRF has any international drivers. Tamiya just releases MS models, then forgets about supporting them. However, TRF420 parts supply is surprisingly better compared to past TRF cars
10-10-2020, 11:17 PM
#11
Tech Master
Originally Posted by herrokero
TRF420 will stay and besides, I don't think TRF has any international drivers. Tamiya just releases MS models, then forgets about supporting them. However, TRF420 parts supply is surprisingly better compared to past TRF cars
Which car will be better in performance/handling? TRF420 or TA-07 MSX?
Someone has to make honest, unbiased comparison and review between the two on asphalt and carpet tracks.
10-12-2020, 01:38 AM
#13
Tech Master
I can’t answer your question. But I can tell you that my TA07MS is faster and more consistent on asphalt tracks or my 419xr.
Originally Posted by Nicadrauspro4
Now the next question is...
Which car will be better in performance/handling? TRF420 or TA-07 MSX?
Someone has to make honest, unbiased comparison and review between the two on asphalt and carpet tracks.
Which car will be better in performance/handling? TRF420 or TA-07 MSX?
Someone has to make honest, unbiased comparison and review between the two on asphalt and carpet tracks.
10-13-2020, 04:24 PM
#14
Even in rear-motor mode?
10-13-2020, 08:45 PM
#15
Tech Master
Originally Posted by Airwave
Even in rear-motor mode?
