Another 8ight-T 2.0 conversion

[Shark413]

Ok, I have seen a couple of 8ight-T conversion on this forum and they are very well done and inspired me to convert my T. I started with the Losi 8ight-T race roller and the Losi conversion kit. I added a MMM 2200 combo and a NeuEnergy 5s lipo. First a review of the roller, I opened the box and noticed the tie wraps holding it down were broken, I have heard others say this was due to rough handling and could also damage the shocks, I disassembled the shocks and they seem ok. I removed all the nitro gear and both the front and rear bulks. I noticed the rear diif had a serious bind in part of the rotation so I took the diff apart, both to check the fluid level and to see if the diff was put together right, sometime the guys at the factory don't tighten the screws holding the bevel gear properly which can cause binding. I reassembled the diffs and the bind was gone. I wanted to use a Robinson wide spur so I cut a small channel in the chassis for clearence and everything bolted together without any issues. I ground down the Losi rear motor support so it would fit the thicker MMM motor.

[Shark413]

Part 2:

I added the Losi optional aluminum steering plate and servo saver arm as I heard this could be a weak spot. The wide Robinson (48T) gives me gearing closer to the stock truggy and because it is wider the wear on the pinion/spur is reduced. I am using a Losi Smart Diff in the center, I have one in my buggy and it works great. I did a quick paint job using Parma Faskolor paint and I covered the nitro motor hole with a lexan plug.

[Overkill]

Very nice build, so far

I am real interested in how your temps are with the setup you are going to run and how hot the MMM combo gets in the Truggy, as I was following your Buggy build and only now noticed that you had to change motor to get the temps down from your original setup.

Are you also running the 47t Spur form Robinson Racing on this truggy (same as buggy) or are you using a 48t spur (I can sort of make out in the first pic a number of 48 on the center diff)???? Answered this in part two, I'm a bit slow at typing ;)

I do like the all black look of the 2.0, would look really hot with either the Flux motor or the Revo black motor, not saying there is anything wrong with the green, that's what I have

[Shark413]

Part 3:

I added a strip of 3M Dual Loc velcro to the battery tray and some foam padding. This helps keep the batteries from sliding forward and helps prevent the lipos from getting dents and battery tray breakage. I installed front and rear Sumo skids to help protect the bottom of the chassis and I added some homemade rear mud guards. I have been running a converted Kyosho ST-RR which I have been very pleased with, but I love the way my convert losi buggy handles and I hope the truggy handles the same. Without tires, body and a battery it weighted in at 6 lbs 9.2 oz.

[Shark413]

Originally Posted by Overkill

Very nice build, so far

I am real interested in how your temps are with the setup you are going to run and how hot the MMM combo gets in the Truggy, as I was following your Buggy build and only now noticed that you had to change motor to get the temps down from your original setup.

Are you also running the 47t Spur form Robinson Racing on this truggy (same as buggy) or are you using a 48t spur (I can sort of make out in the first pic a number of 48 on the center diff)???? Answered this in part two, I'm a bit slow at typing ;)

I do like the all black look of the 2.0, would look really hot with either the Flux motor or the Revo black motor, not saying there is anything wrong with the green, that's what I have

Hi, I am running the Robinson 47T spur in my buggy and the 48T spur in the truggy. Both are closer to the stock setup.

[Shark413]

Originally Posted by Overkill

Very nice build, so far

I am real interested in how your temps are with the setup you are going to run and how hot the MMM combo gets in the Truggy, as I was following your Buggy build and only now noticed that you had to change motor to get the temps down from your original setup.

Are you also running the 47t Spur form Robinson Racing on this truggy (same as buggy) or are you using a 48t spur (I can sort of make out in the first pic a number of 48 on the center diff)???? Answered this in part two, I'm a bit slow at typing ;)

I do like the all black look of the 2.0, would look really hot with either the Flux motor or the Revo black motor, not saying there is anything wrong with the green, that's what I have

OverKill, I am not sure what is causing my temps to get so high (170 degrees) using the MMM 2650kv motor in my buggy. I used a similar motor (Neu 1512/2D) in my Kyosho buggy and it ran cool. I sold the Neu motor so I could not try it in my Losi buggy, may be I just got a lemon. I ran the 1515/1.5D in another buggy and it was solid, so I am hoping for the same results in my Losi buggy.

[bdebde]

As far as your buggy motor temps, have you tried running without the smart diff?

[Shark413]

Originally Posted by bdebde

As far as your buggy motor temps, have you tried running without the smart diff?

bdebde, I ran the first day with a standard diff the second time out was with the Smart Diff and both times I had temps that I felt were a little high. Some runs would be fine, then there would be a run where the temps started out fine then they shot up into the 170+ degree range. I never had temps like this using my 1512/2D or 1515/1.5D in my other buggies. So yeah may be it has something to do with the SD, I'll try the 1515/1.5D which I know runs cool and see how it works in my Losi using the SD.

my temps have also been high in my 1.0 with 1515/2.5d, 6s, MMM. I have been running my ESC timing @10, I have since lowered to 0, I havnt run the truggy since I lowered the timing I will report how it did after I run again

[Shark413]

Originally Posted by azjc

my temps have also been high in my 1.0 with 1515/2.5d, 6s, MMM. I have been running my ESC timing @10, I have since lowered to 0, I havnt run the truggy since I lowered the timing I will report how it did after I run again

azjc, I also read in another post about how timing even @10 could impact temps. I checked all my MMM ESC and they were all set to the default Timing of 10, so I back them all down to zero. Yeah let us know if there is a difference in your temps. I will wait to hear from you before I reinstall and try my MMM 2650kv motor with the new timings.

I got a 20 min run in today, ran it like I was racing quick accelerating and doing med speed doughnuts and it did run cooler, motor , esc and battery..and it was noticable. 48/16 gearing, and after 20 mins my 6s 5000 pack still had 20% capacity left. When I was running the timing @ 10 I wouldnt even get to 20 mins before the pack dumped and the LVC kicked in

[Shark413]

Update:

Added some of the new KingHeadz rear carriers that use the larger (16x8) bearing.

I would really like to see RPM make arms and bearing carriers for the Truggies I love
the RPM upgrades for the Revo, did you notice any improvements with the KingHeadz?

[Shark413]

Originally Posted by azjc

I would really like to see RPM make arms and bearing carriers for the Truggies I love
the RPM upgrades for the Revo, did you notice any improvements with the KingHeadz?

The truggy hasn't been on the track yet, I just read a bunch of post on another forum where several racers mentioned problems with the smaller rear 14x8mm bearings not holding up. So it is more for preventative maintenance.

Yeah I don't understand why RPM doesn't make more stuff for truggies/buggies. Plastic is much lighter (and cheaper) than aluminum. The pros use plastic because it is light, but they can afford to get new parts everytime they run, so they don't have to worry about durability.

[Shark413]

Update:

I Finally got my Losi 8ight-T on the track today. The track has been completely redone since the last time I was there, very technical with lots of quads, offcamber, elevations, etc. Very difficult track for a truggy. At first the truggy was a handful to control, very inconsistant, then I remembered Losi recommends a break in period. After two packs the truggy felt much better and I was able to put in some hot laps. I have a Smart diff in the center but under power it still seemed to send more power to the front, my front tires were ballooning and I even popped a few wheelies when I really nailed it and that is a major no-no for a truggy. I blew both front stock Losi tires off the rims and then I switched to some new AKA's, these wheels/tires were dialed for this track (blue groove). I was happy with the handling, it turned much better than I expected and pivoted perfectly. Jumping was good and controlling altitude was a piece of cake tapping the brakes or when I stabbed the throttle. But not all was roses, one of the rear shock ends pulled off (I heard that the factory sometimes over tigthens the ends and messes up the internal threads), I lost a screw and lock nut holding the front inside upper toelink pivot ball, I blew off two of the factory glues tires and the inside of the rims rubbed on the spindle. But on the other hand I took a couple of big hits when I was getting used to the new track and darted a few of my double double attempts over the quads and nothing broke (except for the shock end). The Motor performed well and was faster than all the other truggies/buggies on the track. Temps on the motor were great (118 max, with ambient temps in the 80's).


Eagle Tree data (motor and battery temps)