36LikesTLR 8IGHT-E 4.0 Kit Thread!
06-17-2016, 07:39 AM - Wikipost
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10-27-2018, 11:37 PM
#1171
Take a look at the attached photo. The aft side (left in the photo) of every tooth on the spur gear is "machined" off. This happened on just my second time out on our clubs informal outdoor dirt track.
I was driving around and started to hear a different, buzzing sort of noise. I stopped to take a look and noticed some damage to the spur gear. I kept running for a while and this is what it looked like at the end of the battery.
I am hoping this was just caused by a small rock getting into the gears which is entirely possible. I am posting about it to see if thee is some other reason for this due to the design. Are others seeing this? I noticed that there is a small pocket under the gear where the motor angle plate goes. Something could easily get stuck and there is not much clearance in general around the gear.
How do you guys set the spur to pinion clearance? I did what I have done on some helicopters; used a sheet of 20 pound paper as a clearance gauge?
I was driving around and started to hear a different, buzzing sort of noise. I stopped to take a look and noticed some damage to the spur gear. I kept running for a while and this is what it looked like at the end of the battery.
I am hoping this was just caused by a small rock getting into the gears which is entirely possible. I am posting about it to see if thee is some other reason for this due to the design. Are others seeing this? I noticed that there is a small pocket under the gear where the motor angle plate goes. Something could easily get stuck and there is not much clearance in general around the gear.
How do you guys set the spur to pinion clearance? I did what I have done on some helicopters; used a sheet of 20 pound paper as a clearance gauge?
10-28-2018, 09:42 AM
#1172
I still think it was due to a rock getting caught. When i first heard the off-normal noise, the damage didn't look that uniform. I kept running it till the end of that battery and then it looked like the photo. I ran it like that again yesterday and you really can't tell. Worked fine with the dorked-up gear.
I have new gears on order. I will replace the spur and keep an eye on things and see if the same thing happens again.
I take it from reading through the thread that damaged spur gears is a pretty common thing. Something similar happened on my Losi SCBE but the damage doesn't look so uniform.
10-28-2018, 04:56 PM
#1174
I actually ordered both types. I found some threads where most guys liked the plastic gears better as a "mechanical fuse". My plan is to try the plastic gear again but if it doesn't last long, then i will try the metal one.
10-29-2018, 08:15 PM
#1175
Tech Initiate
I recently switched to the new Losi 16mm EVO springs and I noticed that the rear spring ever so slightly rubs up against the shock body threads when being compressed. The front springs do not do this. Anyone else that has switched notice this? I purchased the different spring cups and flipped the spring collar around per Losi's recommendation.
10-30-2018, 07:18 AM
#1177
Tech Adept
iTrader: (19)
I recently switched to the new Losi 16mm EVO springs and I noticed that the rear spring ever so slightly rubs up against the shock body threads when being compressed. The front springs do not do this. Anyone else that has switched notice this? I purchased the different spring cups and flipped the spring collar around per Losi's recommendation.
10-31-2018, 12:45 PM
#1179
Good input. Thanks. I received both types yesterday. I do think I will try a plastic one at least one more time. I want to see if it was a chance event or something more systematic.
11-29-2018, 04:03 PM
#1181
Final drive ratio
How do i work out the FDR? Is there a table somewhere or are the differential ratios posted somewhere. I searched online and in the manual. I happen to have 14T pinion and everything else is stock.
11-30-2018, 06:05 PM
#1183
The reason I am asking about FDR is that my ESC mentions FDR range and you kind of need to know it if you want to play around with different KV motors and gearing. In any event, it should be in the spec. It was asked in some other threads and there is a Table floating around for the 8ight 2.0 so its hard to know if the 4.0 is the same.
12-01-2018, 09:40 AM
#1185