Official Revised Arrma Granite 4X4 Thread
10-10-2017, 09:01 AM
#1
Official Revised Arrma Granite 4X4 Thread
https://www.arrma-rc.com/4x4/mega/
Looks like an all new chassis design and diff layout. This is the "mega" series of vehicles so I'm sure they have a BLX series coming that includes BL power/other upgrade measures.
Also, it looks like the Senton will be moved from 1/8th scale to 1/10th scale from this revision based on Fury no longer being included in this refresh. The price of the Senton on Tower dropped to $350 so that might support the strategy to sell them off and move the SCT business to 1/10th.
Interesting.
Looks like an all new chassis design and diff layout. This is the "mega" series of vehicles so I'm sure they have a BLX series coming that includes BL power/other upgrade measures.
Also, it looks like the Senton will be moved from 1/8th scale to 1/10th scale from this revision based on Fury no longer being included in this refresh. The price of the Senton on Tower dropped to $350 so that might support the strategy to sell them off and move the SCT business to 1/10th.
Interesting.
10-16-2017, 01:43 PM
#2
https://www.arrma-rc.com/4x4/mega/
Looks like an all new chassis design and diff layout. This is the "mega" series of vehicles so I'm sure they have a BLX series coming that includes BL power/other upgrade measures.
Also, it looks like the Senton will be moved from 1/8th scale to 1/10th scale from this revision based on Fury no longer being included in this refresh. The price of the Senton on Tower dropped to $350 so that might support the strategy to sell them off and move the SCT business to 1/10th.
Interesting.
Looks like an all new chassis design and diff layout. This is the "mega" series of vehicles so I'm sure they have a BLX series coming that includes BL power/other upgrade measures.
Also, it looks like the Senton will be moved from 1/8th scale to 1/10th scale from this revision based on Fury no longer being included in this refresh. The price of the Senton on Tower dropped to $350 so that might support the strategy to sell them off and move the SCT business to 1/10th.
Interesting.
11-15-2017, 08:35 AM
#5
Tech Fanatic
11-15-2017, 09:17 AM
#6
My personal opinion is plastic should never be used for bevel gears and that’s exactly what Arrma did here and on another truck. That other truck was an entry level vehicle that would likely stay brushed so it wasn’t a big deal. Because unless this is some new kind of plastic I seriously doubt it can hold up to brushless.
Also have a look at the housing for the diff in the exploded views. There’s a carrier that holds the gears and the other part is just a cover that doesn’t offer much if any additional strength. The gear carrier does have reinforcement ribbing but in my opinion doesn’t offer the best resistance to flex. If the carrier flexes the mesh between the ring and pinion changes shredding gears. Likely not much of an issue here as the plastic ring gear would likely let go before the carrier flexes and chews the gears that way. But if you somehow get metal gears in there then the gear carrier will be the next weak link.
I’d wait for user reviews to come in on this if you’re thinking about brushless.
Also have a look at the housing for the diff in the exploded views. There’s a carrier that holds the gears and the other part is just a cover that doesn’t offer much if any additional strength. The gear carrier does have reinforcement ribbing but in my opinion doesn’t offer the best resistance to flex. If the carrier flexes the mesh between the ring and pinion changes shredding gears. Likely not much of an issue here as the plastic ring gear would likely let go before the carrier flexes and chews the gears that way. But if you somehow get metal gears in there then the gear carrier will be the next weak link.
I’d wait for user reviews to come in on this if you’re thinking about brushless.
11-15-2017, 09:37 AM
#7
My personal opinion is plastic should never be used for bevel gears and that’s exactly what Arrma did here and on another truck. That other truck was an entry level vehicle that would likely stay brushed so it wasn’t a big deal. Because unless this is some new kind of plastic I seriously doubt it can hold up to brushless.
Also have a look at the housing for the diff in the exploded views. There’s a carrier that holds the gears and the other part is just a cover that doesn’t offer much if any additional strength. The gear carrier does have reinforcement ribbing but in my opinion doesn’t offer the best resistance to flex. If the carrier flexes the mesh between the ring and pinion changes shredding gears. Likely not much of an issue here as the plastic ring gear would likely let go before the carrier flexes and chews the gears that way. But if you somehow get metal gears in there then the gear carrier will be the next weak link.
I’d wait for user reviews to come in on this if you’re thinking about brushless.
Also have a look at the housing for the diff in the exploded views. There’s a carrier that holds the gears and the other part is just a cover that doesn’t offer much if any additional strength. The gear carrier does have reinforcement ribbing but in my opinion doesn’t offer the best resistance to flex. If the carrier flexes the mesh between the ring and pinion changes shredding gears. Likely not much of an issue here as the plastic ring gear would likely let go before the carrier flexes and chews the gears that way. But if you somehow get metal gears in there then the gear carrier will be the next weak link.
I’d wait for user reviews to come in on this if you’re thinking about brushless.
"Experience is what you get, when you don't get want."
Knowing Arrma, I'm sure they DID think about this and will change up the diffs for the brushless version.
Here's to finding out first.
12-18-2017, 07:03 AM
#9
See the attached pictures. With a 27t pinion, you need to modify the bearing plate/gear cover so the pinion sleeve can clear the plastic. Not my best dremel job, but you get the picture.
12-19-2017, 07:04 AM
#10
I decided to try this guy on 3s yesterday evening. It's got so much power, it's not even possible to pull the trigger to full throttle, even at close to top speed. I removed the the front/rear diffs and checked the spur and pinion...no damaged teeth or cracked gears. The driveshaft also is holding up. It's important to note I have the punch and start power settings on low using the Castle Link software.
I didn't GPS it, but I'd ball park the speed in the high 50, low 60 MPH range. I will say this chassis is very balanced and feels very much like a small MT-410 while using a 3s pack. I'm pretty certain this will outrun my Proline Pro MT 4x4 and that's equipped with a 1/8th 1515 Castle setup running 4s.
Nutty.
I didn't GPS it, but I'd ball park the speed in the high 50, low 60 MPH range. I will say this chassis is very balanced and feels very much like a small MT-410 while using a 3s pack. I'm pretty certain this will outrun my Proline Pro MT 4x4 and that's equipped with a 1/8th 1515 Castle setup running 4s.
Nutty.
12-26-2017, 06:25 AM
#13
Yes, it's the 1410, 3800kv 4-pole sensored setup.
