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Old 03-03-2014, 09:09 PM
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Originally Posted by rustyfingers View Post
Anyone know if the RX8 will fit in the B4.2?
Looking at Tekin's website the dimensions of the RX8 are 1.5x2.2x1.4 which is larger then the side pod area. Maybe if you mount it on a shelf like Avid's but then you might run into body interference.
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Old 03-06-2014, 10:37 AM
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Hi, just picked up a used B4.2 roller and trying to decide on ESC placement. If you have your ESC mounted in the back of the battery tray, can you post pics? Thanks in advance.
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Old 03-06-2014, 10:50 AM
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Originally Posted by eddiemoney13 View Post
Hi, just picked up a used B4.2 roller and trying to decide on ESC placement. If you have your ESC mounted in the back of the battery tray, can you post pics? Thanks in advance.
If you do a google images search for "B4.2 inline electronics" you will see quite a few pics.

I run mine in the back of the battery tray. I will try to post pics tonight if I can get around to it. I have to pack up tonight for club racing this weekend anyway.
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Old 03-06-2014, 11:04 AM
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Originally Posted by eddiemoney13 View Post
Hi, just picked up a used B4.2 roller and trying to decide on ESC placement. If you have your ESC mounted in the back of the battery tray, can you post pics? Thanks in advance.
Click HERE for pics. Scroll down the page for several different top of battery ESC placements.
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Old 03-06-2014, 11:06 AM
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Originally Posted by 1967Typhoon View Post
If you do a google images search for "B4.2 inline electronics" you will see quite a few pics.

I run mine in the back of the battery tray. I will try to post pics tonight if I can get around to it. I have to pack up tonight for club racing this weekend anyway.
Thanks. I saw Maifield's setup already but wanted see what others have done as well. I'll look for your pics tonight if you can post them. Thanks.
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Old 03-06-2014, 11:20 AM
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Originally Posted by clw View Post
Click HERE for pics. Scroll down the page for several different top of battery ESC placements.
Thanks!
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Old 03-07-2014, 04:03 PM
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Got a question for you guys on the b4.2. I am running a 10.5 turn motor, the car I bought has a JC Concepts 75 tooth spur gear, and it didn't have a pinion, so I bought a 30 tooth pinion just to have one to put on the car. I am going to be running this on a indoor offroad track, pretty tight track. Am I way off on the pinion gear, or pretty close. If I am way off, what would be a good starting spot on the pinion. Thanks
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Old 03-07-2014, 04:29 PM
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way off maybe 25/78
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Old 03-08-2014, 05:17 AM
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Hello!
I'm writing from Italy.

I just finished to assemble my new B4.2

I want to use a Hobbywing 13.5T and Xerun 60A v2.1 (with turbo mode)

The track is technical with a straight line of 20-25 meters.

What pinion can I use with 81 teeth spur gear?

Does anyone know a starting setup for the xerun's software with turbo timing?
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Old 03-08-2014, 08:17 AM
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I think I ran a 20 tooth when I had my 13.5. As for ESC setup, It all depends on the feel you like and what works for your track. My suggestion is run it how it is and go from there.
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Old 03-10-2014, 10:39 PM
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Thumbs up b4.2 steering problem

Hi there in the manual it says to put the servo horn 1 spline to the right why is that.
I thought you turn electrics on and centre the steering servo trims and install the horn in a straight up and down position.
Am i missing something.
Does this make sense to anyone????
thanks brett
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Old 03-10-2014, 10:45 PM
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Originally Posted by ryan73 View Post
Hi there in the manual it says to put the servo horn 1 spline to the right why is that.
I thought you turn electrics on and centre the steering servo trims and install the horn in a straight up and down position.
Am i missing something.
Does this make sense to anyone????
thanks brett
I thought it may be because if you don't do it, the servo throw will go to hard to the side when the car is off and cause it bind up till the their is power to the servo again. Not completely sure tho
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Old 03-10-2014, 10:55 PM
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turn on your car with the servo plugged in and set your trims to 0. then put the horn on 1 spline to the right and the steering should be centered or pretty close to it depending on your steering link. just a rule of thumb for the associated vehicles
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Old 03-11-2014, 02:11 AM
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Default HELP!!! B4.2 Gearing ratio

I'm new to this and just got a b4.2 buggy with a tekin rs gen 2 esc with a trinity d3.5 17.5 maxzilla motor? I run on an indoor track/clay and needing some help or opinions on the spur/pinion gear that people have found best work??? Please give me some opinions to the best for fast good stock racing! All will be much appreciated...

Thanks!
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Old 03-11-2014, 04:54 AM
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Originally Posted by ryan73 View Post
Hi there in the manual it says to put the servo horn 1 spline to the right why is that.
I thought you turn electrics on and centre the steering servo trims and install the horn in a straight up and down position.
Am i missing something.
Does this make sense to anyone????
thanks brett
It's because the servo horn end of the link is higher than the steering arm end. Turning in either direction flattens out the link and that creates some steer in the same direction, making the left/right directions steer differently. Tilting the horn over a little helps balance it out. Common situation for many off road and other steering systems.
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