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Freeing up rc car

Freeing up rc car

Old 06-26-2015, 12:33 AM
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Default Freeing up rc car

Anybody got any tips to free up belt drive cars? I replace bearings often (every 4 race meets or so) and re oil them every meet. I make sure nothing is binding etc but still have trouble getting my car to spin as freely as some others... and its a problem in stock especially since power is limited...
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Old 06-26-2015, 02:39 AM
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Is the friction quite noticeable? Are the belts too tight?

My experience with my BD7-13' drivetrain.

When ever I screwed down the upper bulkhead to the lower bulkhead the bearings in the cam-holders would squish a little. This was putting pressure on the bearings and was causing unwanted friction. I ended up putting 0.1 mm shims under each screw hole location between the lower and upper bulkhead. This eliminated the unwanted friction and my drivetrain is super free. However, you own a BD7-15'. They might have eliminated this issue.
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Old 06-26-2015, 03:39 AM
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Lubricate and clean the belts.

Rubber particles from the track will stick on to the belt making the belt stiffer.
And I always spray the teeth of the belt with a teflon spray what will make the belt run smooth over the pulleys.
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Old 06-26-2015, 04:43 AM
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Originally Posted by EDWARD2003 View Post
Is the friction quite noticeable? Are the belts too tight?

My experience with my BD7-13' drivetrain.

When ever I screwed down the upper bulkhead to the lower bulkhead the bearings in the cam-holders would squish a little. This was putting pressure on the bearings and was causing unwanted friction. I ended up putting 0.1 mm shims under each screw hole location between the lower and upper bulkhead. This eliminated the unwanted friction and my drivetrain is super free. However, you own a BD7-15'. They might have eliminated this issue.
Ah i've seen people do this before... now i know why. Thanks i'll give it a go
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Old 06-26-2015, 07:43 AM
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Originally Posted by Roelof View Post
Lubricate and clean the belts.

Rubber particles from the track will stick on to the belt making the belt stiffer.
And I always spray the teeth of the belt with a teflon spray what will make the belt run smooth over the pulleys.
What brand of teflon spray do you use sir?
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Old 06-26-2015, 07:57 AM
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Are you running the aluminum cams/bearing holders? I ran these on my BD7 2014 and it free'd it up a bit. On my Tamiya's I ran the .1mm shims under the bulkhead caps via Jilles tips. Belt tension also plays a bit roll in free'ness.
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Old 06-26-2015, 02:46 PM
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I keep my belt dry. just use a brush, maintenance periodically. Too loose on tension small pebbles get into the cogged belt sometime stretching or breaking the belt. I use a military spec on belts, grab the belt, turn it 90deg its tight enough.
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Old 06-26-2015, 05:09 PM
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Default Flourine

Use Flourine on all the ball ends, pulleys, sus blocks. This really helps free the car up. Below is the link of what I am talking about.
http://www.tqrcracing.com/shop/produ...asp?p_id=10100
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Old 06-27-2015, 10:33 AM
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Originally Posted by VegasGator View Post
Use Flourine on all the ball ends, pulleys, sus blocks. This really helps free the car up. Below is the link of what I am talking about.
http://www.tqrcracing.com/shop/produ...asp?p_id=10100
Where do u apply the fluorine on the pulleys and suspension blocks?
The holes in the suspension blocks and the teeth of the pulley?
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