I have been on the forum for a few months now, one of the things I would like to do is prep the ERBE for some speed runs.
I don't have any plans to beat the speed record, but I still would like to have the advantage over a mates ERBE.
I have the black motor that comes with the ERBE, I am assuming a 1515?
Is that it? I don't have plans on changing the motor as it is 2200Kv right?
My mates ERBE has an after market 2000kv motor, So I think I have the advantage.
That being said, I have been reading the two other threads about how people have been gearing their ERBE. At the moment I have the 54tooth spur(spare one supplied in box) and the 20tooth pinion.
There has been mention of running the following gearing.
"We were running 24T 36T mod1 gearing by the way."
I have no idea what mod1 gearing is and would like to get a better understanding of what can be put on these motors. The lady at the LHS said the Traxxas part number 5963, would not work with the spur that I have.
I have no idea why, if it was quoted that 24t pinion and 36t spur was used.
Can I have this setup on my ERBE with the mxl-6 ESC?
I have 2s and 3s batteries.
If I was able to get the 24t 36 setup on my ERBE, would it work with 2s as well?
PS, I have done a search of the forum and could not find the answers. Sorry if it is out there.
Last edited by Masda74; 08-23-2015 at 04:51 AM. Reason: Spelling mistakes
Mod1 is the pitch of the gear. Mod 0.8 is the stock 32p if I remember correctly. But you wouldn't use such high gears on a stock EREB. I believe it comes with the 2200kv.
Dual 2s on a MXL-6s will get you 4s. I suggest you sticking with 2s batteries or you might be breaking your EREB every run.
All your assumptions about the motor is correct it is a 2200kv castle motor, and the esc is the mamba mxl-6s.
You can run mod1 gears if you want they are stronger and louder at the same time, if you get a mod1 spur like 36t you need a mod1 pinion too. It works with 4s or 6s it doesn't matter just watch your temps and have fun
If you know your friends gearing you can plug the info into the rc monster speed calc, and that sets your target speed. Then change the gearing (in the boxes) so you have more top end. http://www.scriptasylum.com/rc_speed/top_speed.html
Thanks to both of you for the replies. Greatly appreciated.
I have been running with 2s 7600mHa batteries for a while now and feel comfortable using them as the main source of power.
My mate allowed me to use his 3s 5000mAh batteries to do a speed run and I was hooked. They were awesome fun especially with all that power.
The badlands weren't to bad at that power, but the car was sort of skating all over the place.
I have ordered a pair of 3s batteries and they arrived last Thursday.
I am in the process of ordering what I need. I will be ordering a pinion and gear first.
Will I need to worry about the pinion fitting on the shaft of the motor?
I have the telemetry sensors and have an alarm set for the temp of the motor.
I am in the process of striping down the proline road rage tires that I have as they were not glues proper line onto the rims. I have removed all chrome bits off the rims, but the tires have cracks everywhere. I might have to order a new set of tires.
I am assuming that there is no way of repairing these cracks in the tires. Some cracks actually have a whole right through. It sounds like trouble to me, but has anyone been able to repair tires?
There is still good tread on these guys, hence the reason that I am asking.
Mod 1 is used by pretty much every 1/8 scale car out there. The nitro revo uses it too. When comparing mod 1 to .8, mod 1 is courser with fewer (but larger) teeth. Mod 1 seems to be more durable but it's also louder and not as efficient.
Revo 3.3, EMBE 6s, ERBE 6s (x2), Summit 4s
Also an infrared temp gun is a great investment. They are very handy for spot checking the electrical components. Here is an example of how I used mine yesterday. I was running my etruggy with a single 4s pack, 2200kv motor and MM2 esc. Was also running a 14t pinion. Performance was decent with lots of torque out of the corners. After the run I check temps and found the motor to be close to 200f, the esc at 110f, and the battery about 110f. The motor is at the max recommended temp so to fix that I stepped up one tooth on the pinion and after a cool down ran it again. This time the motor was at 167f, esc at 115f and the battery at 115f. You can see how a small change in gearing can have a large effect on temps. The next step for me is to jump up one more tooth on the pinion. This should hopefully get the temps balanced out between the three components and the top speed will be higher from where I started.
Revo 3.3, EMBE 6s, ERBE 6s (x2), Summit 4s
The 24/36 gearing was used for speed runs in the high 80s and low 90s on a straight, level, and smooth asphalt surface. I would guess that cool-down periods were allowed for the Neu 1515 (not Castle-Neu) motor. You shouldn't use anything close to that gearing for real-world driving.
If you're gonna be stupid, you'd better be tough.
Thanks for the link Emmax_Racer. I have tried to use that page, but never get the correct figures when I enter the details of my setup. I got 93km/h for my setup on 3s and that page said I could only hit about 60km/h.
I must have been entering incorrect data then.
I will have to stick with "mod 1" pinion and spur, if I want a 24tooth pinion and a 36tooth spur.
I am more concerned about the pinion I get won't fit the shaft of the motor.
I hope it is okay to post here this here. I have two choices.
(That is what I am planing on getting, but I have no idea if it is to small to fit on the shaft of the motor.)
Or should I get this
Last edited by Masda74; 08-23-2015 at 11:01 AM.
That first one is by gonna work. The second probably will, I dot. Work much with mod 1, but that seems like a giant gear
I tought of mod 1 gears which is arround 25.7 pitch how ever the 32 pitch are already very durable so I am stickng to it.
But definely yor choice of tyres would also help in yor quest, something with stck nicely on asphalt etc. Some use the do1 tyres, road rage and also the banditos....unfortunately I have not used any so wont be able to comment...
Good luck , competition amogst freinds are always fun..
Live life to the fullest
Cheers fellas. These gears will only ever be used on speed runs. My current setup of 20t and 54t will be put back on for bashing.
Right, with some time on my hand I went through the posts again and found that I missed a few posts.
Rock-Rod, I have already ordered my mod1 pinion and spur. I am more worried that the pinion won't fit in the motor bracket enclosure area. I did order the 24t and the 25t mod1 pinions. just got to wait now for them to arrive.
In regards to infrared temp gun, I got one. I checked my 3s batteries after a few runs and the batteries were at 31.3 degrees Celsius (88.34f) the motor was at 56 degrees Celsius (132.8f).
I forgot to measure the ESC. is it just a case of measuring the temp on the side of the heatsink for the esc?
Or does it involve removing the fan on top and then measuring the fins?
The plan with the speed runs, is to do a 1 or 2 passes and then letting the motor cool down.
I have started the process of getting the tires of the rims, by brute force.
I have cleaned all tires on the inside and have taped them up with duck tape.
I am waiting for my order to arrive with the pinions, as it has the CA glue as well to get the tires back on the rims.
Then I will be doing the fishing line trick to the tires, but I will be using braid.
Once that is all done, I will provide an update. I did try and edit the post above, but it won't let me.