210/410 heat issues??

[OneKiwi]

I have a LRP tc spec in my 210.

Geared at 83/21 there abouts and the motor (LRP x12 8.5T with 0 timing/standard insert) is coming off att 100°C the last run I did.
Do I go up pinion? 24/25 maybe?
Im struggling to get the esc up to 60°C

Anyone else running this esc? Like it? I find it a bit slow/soft/lazy and Im not sure If I should just turn up the timing on the ,motor or settings in the esc.


Also: in the 410

I have the rs pro and 2 second party caps.
Its in my v3 on a tightish/med carpet track running 0 timing 85 current limiter and rest as standard.
The esc is coming off at around 80-90°C, nearly all lights blinking geared at 87/19 motor at about 60-70°C
Losi 6.5T motor no timing
What am I doing wrong? How do I get the temps down?

[Chalkie]

Not sure on the 210 but the 410 may be undergeared, I'm running 87/23 on a X12 6.5 octa indoors at the moment and it seems ok.

[Jason A]

In my Dex210 I am running my 6.5t Novak on kit spur on 23 pinion and it's not even coming off hot :-)

Running LRP tc v2 0 timing on V3 offroad software.

:-)

[aeb4]

If my calculations are correct, your 210 is quite a lot under geared. The recommended gear ratio for that motor is 8.5:1 in a 2wd, and your currently on 10.28. I'd recommend trying a 25 on the 83 tooth spur, as that would give around 8.6.

[Chris-S]

Originally Posted by Chalkie

Not sure on the 210 but the 410 may be undergeared, I'm running 87/23 on a X12 6.5 octa indoors at the moment and it seems ok.

Running the same gear ratio on my 410. Speedo is an ORCA vritra pro with a 6.5 turn motor, running a small amount of static timing on the speedo and some turbo timing. Motor gets to 70degrees or so and the speedo 50ish, always run a fan on the speedo.
I have cut the front and rear out of the body so there is more air flow through the car, this lowered the motor/speedo temps.

My 210 has the same speedo but with a 7.5turn motor with a 24t pinion/87t spur. Speedo never gets above 40, motor not above 50.


Make sure the transmissions are running free and the pinion mesh is correct. Also check the slipper is not loose.
The Tekins will struggle in a 4wd unless you have a fan over them, tbh most speedo's will get hot in a 410. If I dont run a fan on my Orca when racing indoors it will thermal.

[OneKiwi]

FYI its not the newer LRP speedo

Thanks people Ill test the gearing tomorrow see how it goes.

Anyone know of a way to mount a fan on the tekin? I have glued one behind it once, may just have to do that again, but would be good to get some sort of case/bracket

EDIT: found a awesome looking case + fan here

How did you get the gear ratio calculations?

Here is how my 410 turned out today

[aeb4]

I used the internal gear ratio as 2.6, which I think is correct.
Then did the internal gear ratio divided by the number of tooth on the pinion, then multiplied that by the number of teeth on the spur.

Therefore 2.6/21=0.124, then 0.124*83=10.28

That's how I worked mine out anyway and its been spot on so far, coming off barely warm, quite unusual for an X12!

[OneKiwi]

Ok thanks and the recommended ratio, where do you find that?
Whats the 410 rgr anyone?

[Andrew Twigger]

The recommended ratio tends to be associated with a particular motor rather than a specific car. The motor manufacturer may recommend a ratio for 2wd or 4wd buggy which may help.

For example, LRP suggest an FDR of 10.8 for the 6.5 LRP Octa that I have in a 4wd buggy. Obviously these are only guidelines and certain tracks and conditions may suit different gearings.

[hloland]

In the Dex 410 manual page 33, you have the gear chart.

http://www.team-durango.com/pdf/manu...th%20cover.pdf

Novak brushless motor GEARING RECOMMENDATIONS: (more or less the same for most brushless systems)

http://www.teamnovak.com/tech_info/b...r_gearing.html

[gazmond]

You can also use the below link to make your own gearing charts. Just put in the transmission ratio, spur and pinion and it will generate a chart showing the ratio for the info you input as well as a whole bunch of combinaions either side of your selection.

http://www.gearchart.com/index.cfm?f...n=chart.create

You can also turn off the crap tune that plays when you first load the site as well
'

[WHITTLER555]

Hi, I would gear:

210 - 87/25

410 - 87/23

Just use the kit spur gear.

[OneKiwi]

Originally Posted by WHITTLER555

Hi, I would gear:

210 - 87/25

410 - 87/23

Just use the kit spur gear.

Have you heard them?? Im going to get a RW for the 410 soon
Does anyone use different teeth with the spur gear or always 87?

[Chris-S]

Originally Posted by OneKiwi

Have you heard them?? Im going to get a RW for the 410 soon
Does anyone use different teeth with the spur gear or always 87?

Have always used 87, you could alter the weight balance on the 210 using a smaller pinion. I think you would be hard pushed to notice the difference tbh.

[WHITTLER555]

Originally Posted by OneKiwi

Have you heard them?? Im going to get a RW for the 410 soon
Does anyone use different teeth with the spur gear or always 87?

What? heard the spur gear?

I have used them for 3 years now, meshed up correctly they are not noisey?

The noise you hear from most 410's are dry CVD's!

[OneKiwi]

I managed to get a fan in test a 17T pinion and do some body work and it did help a bit. I wasn't at the same track. Still carpet but smaller and tighter. Lacked the speed on the straight so I will test a 19T this week



The 210 it helped going to a 24/25T but the motor still got warm, not hot this time so might see if I have a 26 maybe

[Big G]

it might be worth just opening a few holes in the shell. I found mine was thermalling out when racing on hot days. after I made holes I haven't had a problem since.

[Matt Butcher]

i would recommend using the 0000 timing insert and adding alittle more boost/ timing on the speedo, the 0 insert will add alot of heat in the motor as x12 motors have alot of timing inbuilt.

HTH's

[OneKiwi]

Originally Posted by Matt Butcher

i would recommend using the 0000 timing insert and adding alittle more boost/ timing on the speedo, the 0 insert will add alot of heat in the motor as x12 motors have alot of timing inbuilt.

HTH's

Intresting I have the 00/standard now from memory 0000 is -10°

[OneKiwi]

Originally Posted by Matt Butcher

i would recommend using the 0000 timing insert and adding alittle more boost/ timing on the speedo, the 0 insert will add alot of heat in the motor as x12 motors have alot of timing inbuilt.

HTH's

Intresting I have the 00/standard now and from memory 0000 is -10°

I have opened up the side vents and made 3 holes in the front window