8ight-T Spur and Pinion Help
 

Hey guys, I am slowing doing up a 8ight-T when the parts arrive from overseas and I have a couple of questions. After reading the Zippy thread I thought I better get some opinions on this Losi setup I am starting.

#1 When I use the speed calculator I am getting a speed of 52MPH using the supplied 45t spur and 15t pinion (Losi Conversion) running 5s and the 2200kv CC-Neu (I punch in the 1515/1y). Have I input the right figures if I use Front/Rear Diff ration of 4.3, the Trans of 1, spur 45, pinion 15, 18.5 volts, 2200kv for motor and input tires of LPR Bowties 5.6???? If I have, I think the Losi kit is set for their 1700kv motor because that comes in at 40MPH using the given formula.

#2 If I have inputted the correct data and I am looking at those sort of speeds with the Losi Conversion, for those that have this setup especially with the CC MMM Combo, what sort of temps are you experiencing with all individual parts, ie: motor, ESC, Lipos? Is it advisable to maybe gear down and try and find a plastic spur that will fit, maybe something in the lines of 48T or 49T? Try a 13T pinion or there abouts?

To be fair, the more info I can get with places to purchase from regarding spurs and pinions that may fit, the better for me. It can take me two weeks for something to arrive and I would rather do an order for more parts than needed and have heaps of spares so I can test different combinations all in one day, not one day every two weeks :mdr:

#3 Who loves their Losi 8ight Brushless :lol: I DO :yipi:

I know there is three questions, but the third one is the one I wanted really answered :yes: :rofl: Thanks in advance.

Do you already have the 5s batt? If not just go with that setup and 4s and you should be a slight bit lighter and slower. Your setup seems like just what I want and I think it should be about 40, maybe a slight bit over.

Yeah I already have the lipo, turned up a couple of days ago on the font doorstep, well packed from Hobbycity. I have thought about ordering a 4s aswell to play/race at the track and have the 5s just for bashing around at the park. For some reason when I put in 4s yesterday I was getting results of over 45MPH, today when I inputted my data I get 42MPH :neutral: I think it is 4s for the track and 5s to bash for me then. I will check my temps reguarly for a while against the ambient temps, running surface and batts used so I can get an idea of where the sweet spot is for gearing. I may order pinions from 13-17 and try each during all seasons.

Anyways, heres how she is sitting at the moment while I wait for some new CC 6.5 Bullets.............She be a work in progress :mdr:


http://i238.photobucket.com/albums/f...CIMG4457-1.jpg

Looks like a very nice setup. Welcome to RC Monster.

very nice, heres a link to mine LINK , Love that truck, right now i have a 1.5d and phaltlines on it (street fun) 1y on 5s was the best though, I smoke the neighborhood kids street cars with my truggy, nitro burners and nimh rollers, pathetic lot

Awesome, that's what I'm looking for. I do like the centre Alloy brace from GH racing :yes:, I may look into that when Mikes slipper comes out and someone says it's good for the 8ight, after beating on it :intello:

What body was on your 8T in those photos?

It's the Protoform Hard Drive body, there is one on eBay that I have been looking at after seeing JayJay's :yes:

Have a look here.......http://cgi.ebay.com/BODZ-CUSTOM-PAIN...QQcmdZViewItem

Pretty hot and a great price. Definately a great body though, i like it, I LIKE IT ALOT :yipi: When our dollar is better, I'm getting one of those!

Thank you for the info.....I love the stock Losi body, but my driving on the track sucks so bad that the back of the body where the bed is starts to break after a few uses at the track.

Couldn't help myself, had another look at JayJay's body (the Protoform Hard Drive one :oops:) and hit the "buy it now" option and he gave free shipping to NZ, Legend eBayer :yes: Should get it in about 10 days :yipi:


I have to say, it's one of the best bodies I have seen painted in a while. I sort of don't like the real flame look and to be fair never really liked green on truck, but this body just screams cool :mdr:

I received my CC Bullets today and soldered them into place, a bit of heat shrink later and I was ready to rock and roll. I must admit I was kind of nervous giving it a blast after seeing vids on You Tube and the likes. Well, plugged in, tested gear and walked out onto the road (we live in a small cul-de-sac)..............gave it a little finger and feathered the throttle to see how she would go, :gasp: "oh boy" I dribbled in my pants with excitement.

This thing is unreal, I cannot believe I came back to RC's a few years ago and went into Nitro. My old truck has nothing on this beast and it is an absolute BEAST :diablo: It is alot faster than what I remember electrics to be, running my Tamiya Subaru Brat around with a Technigold in it :mdr:

Here's a couple of pics of how she was sitting as I finished having fun :love:

http://i238.photobucket.com/albums/f...3/CIMG4530.jpg
http://i238.photobucket.com/albums/f...3/CIMG4527.jpg
http://i238.photobucket.com/albums/f...3/CIMG4522.jpg

A big thank you goes to alot of guys on this forum (George16 who showed me the way) for posting about your trucks and what you have done..........it has really helped this brushless noob feel confident in what I have done :great: I am not going back to nitro :whip: now, that's for sure :mdr:

You're welcome Josh. I told you once you make the switch, there's no turning back :party::party::intello::intello:.

Just make sure your next post will a video of your truck running.

I had the same lipo, but used it in a Losi Muggy with a Neu 1515 1.5D and an MGM 16018. The wheels/tires on the Muggy weigh about a pound a piece and as a whole it's just a very heavy truggy and the 1.5D motor (very similar to what you have, but 2700KV) is an amp hog. I ran mine with a 13T pinion and 46T spur the Zippy did very well, but learn from my mistakes and MAKE SURE your lipo has plenty of clearance from the spur gear. Mine came loose during a run and the spur chewed up the top cell so I disposed of the pack. I wouldn't let the thread going on in the CC forum bother you, Zippies are just fine as long as you aren't pushing them too hard (easiest way to tell is the temperature at the end of the run). If they are 110-120 at the end of the run you're OK, but any hotter than that and you'll want to put a smaller pinion on there to reduce the load on the motor.

I will get some small vids in a couple of days once I come out of hospital, I have a pinched nerve that they are going to repair in my lower back. I will be at home for another month or so, so will have plenty of time to get some vids and have a play :yipi: I will take her down to the park where I can really open it up without fear of hitting fences or parked cars...........man I love this insane power, there is NO chance of me "turning back" :yes:

Thanks for the info, every bit helps, I will def be checking out the spur clearance. I sort of came to that conclusion after reading what the Castle guys said and am now not worried at all. After the 10 mins rip around yesterday my batt 5s, 4000mah 25C was only at 85 tops where the motor was 115 and the ESC was sitting 130, outside ambient temp was around 80. I have ordered the 12,13 and 14T online and should get them in about 10 days so hopefully when I really open this thing up I will have some pinions to play around with if the temps decide to increase. I also have a 48 and 49 spur to chuck in if need be :mdr:

Sorry to hear that. Get well soon.