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R/C Tech Forums Thread Wiki: Official Team Associated RC10 B5m Mid-Motor Thread
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Old 03-12-2014, 03:29 AM   #2011
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They are running the b5r tower with the straight arms. In the upper crossbar of the tower the b5m tower has a small like triangle while the b5r does not. At least that is what I noticed as an indicator between my 2 kits.
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Old 03-12-2014, 05:22 AM   #2012
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If anyone is looking for a B5M, P1 Hobbies has them in stock.
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Old 03-12-2014, 05:42 AM   #2013
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Do someone know if we can use old b4.1 style front wheels on the B5 ? I mean wheels with 2 inside bearings.

Is there any compatible axle out there already ?
I found AE does not sell one yet, only hex axle.
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Old 03-12-2014, 05:53 AM   #2014
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Originally Posted by MatthieuL View Post
Do someone know if we can use old b4.1 style front wheels on the B5 ? I mean wheels with 2 inside bearings.

Is there any compatible axle out there already ?
I found AE does not sell one yet, only hex axle.
Only hex, and I dont think you will find them releasing one either. Hex has been out for a while.
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Old 03-12-2014, 06:57 AM   #2015
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Originally Posted by MatthieuL View Post
Do someone know if we can use old b4.1 style front wheels on the B5 ? I mean wheels with 2 inside bearings.

Is there any compatible axle out there already ?
I found AE does not sell one yet, only hex axle.

I would suggest just switching over to hex. You don't need as many front tires as you do rear, so it isn't as expensive to switch the fronts to hex.
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Old 03-12-2014, 07:54 AM   #2016
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Too bad it has 5mm tubes. No-go for me.
Awe Clayton it's only 2 connections. If u don't want to change them Jeff from promatch will likely just make u adapters if u ask. He made me adapters both ways. 4-5mm and 5-4mm. Couldn't even get him to let me pay for them either!
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Old 03-12-2014, 08:51 AM   #2017
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I wired up my car yesterday at the track. Didn't run it in the race but I did take a few laps in practice. The car has a little bit of push but overall I'm very impressed with the handling, jumping, and the overall build go the kit was great.

I run reedy sonic 2 17.5 and have the car geared 33/72. Shocks have 32.5wt 2x1.6t front and 30wt with 3x1.5t rear. Also have no washers on ball stud the the rear brace

One thing that happened while practicing is that the ball stud on the rear hubs needs locktight on it because it turns itself out. Or replace the ball stud with the longer one and put a nut on in.
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Old 03-12-2014, 08:55 AM   #2018
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how are your temps with that gearing and how much motor timing?
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Old 03-12-2014, 09:03 AM   #2019
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how are your temps with that gearing and how much motor timing?
I haven't played with timing on it yet because it was the 1st time on the track but my temp after 6 mins of light running was 120

Keep in mind I was not pushing the car to be fast
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Old 03-12-2014, 09:06 AM   #2020
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I started the build and went straight for the transmission build first.

It went together flawlessly; the plastic parts are top notch (great job Team Associated) very solid feel when the screws are fully torqued. The only thing is I receive a rough batch of out drives. They are a little funky/corroded looking, but they work fine.
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Old 03-12-2014, 09:07 AM   #2021
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ok, one of my issues with MM in the past was temps. I am running 38 deg timing on my reedy 17.5 mach2 72/31 gearing in rear motor and it run 145. I cant afford to gain another 20 degrees because of cooling and weight issues. I really want to try the MM, but motor temps in 17.5 have me concerned.
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Old 03-12-2014, 09:31 AM   #2022
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ok, one of my issues with MM in the past was temps. I am running 38 deg timing on my reedy 17.5 mach2 72/31 gearing in rear motor and it run 145. I cant afford to gain another 20 degrees because of cooling and weight issues. I really want to try the MM, but motor temps in 17.5 have me concerned.
it might be gearing issues for track size. i run schuurspeed 17.5s in b4.2 and b5m. i was at about 135 in b5m and 125 in b4.2 but the b5m had 1 tooth less since that is all i had. 31/72 in b4,2 and 30/72 in b5m. it was a small indoor high bite track. i usually run 32/72 with 40 degrees timing at my home track,i will run the both there tonight and see what the temps are.
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Old 03-12-2014, 09:32 AM   #2023
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Soooo... Am I the only one that is having the rear end want to slide around on them pretty bad on hairpins / 180 turns? The cars feels like it has potential, and while it's not bad, it's not great either. I just cannot push it is hard as I want to drive it. It feels fairly edgy. I've tried a couple different spring and oils combinations in the rear, and I can get it a little better, but not great. Any ideas? I'm at the point where I might need to move on from the car if I cannot get it better within another week or two. I've driven my friend's Serpent mid motor, and its feels the way I think my B5m should. It just drives easier, handles the corners way better, and it's just a nice kit with a few features the B5m doesn't have, for only $40 more. I'd like to get this B5m dialed like everyone else is claiming they have theirs. Kind of confused at this point. My buddy who is a mechanical engineer and quite good with tuning cars is a little stumped how to help at this point. Both of us agree the car just feels edgy to drive and my car hooks consistently on sharp corners. Starting to bum me out.
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Old 03-12-2014, 09:45 AM   #2024
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Quote:
Originally Posted by predu View Post
it might be gearing issues for track size. i run schuurspeed 17.5s in b4.2 and b5m. i was at about 135 in b5m and 125 in b4.2 but the b5m had 1 tooth less since that is all i had. 31/72 in b4,2 and 30/72 in b5m. it was a small indoor high bite track. i usually run 32/72 with 40 degrees timing at my home track,i will run the both there tonight and see what the temps are.
If I try to run 40 deg of timing on ANY track I will get into the 170's.

@Rigor what kind of track? Maybe the wrong rear tires? And the right tires for the serpent, might not be the right tires for the B5M. Any other B5Ms having the same issues locally?
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Old 03-12-2014, 09:47 AM   #2025
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Rigor

Takes time to learn how to tune a mid motor, B5 had plenty of grip. 4 months for me so be patient and learn all the tricks to gain more traction .
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