RC-Monster Forums - View Single Post - Losi LST1.5 - Brushless LST2: Bigmaxximum, Quark 125B, 5S

03:29 PM

Now that I’ve got your attention with my topic title "Flux & Revo killer" I can introduce my LST E-conversion

. (If you don’t want to read a sad biography of my journey into RC or of my LST than skip the first post and start reading at the NOW part)

Since the day I’ve been born I’ve been driving with quality RC cars, but about my 14th it really started to itch and I started buying one car after another… It’s near the end of 2008 and I have three cars, a Blazing Star, an E-Firestorm and a Rustler VXL. At that time Joram (he's also on here) had the first 1:8 E-conversion car in the car part of a Dutch forum (MBF) if I remember correctly. I immediately loved the idea of building a 1:8 MT to brushless. The Savage of Joram was very nice (well, it had to be after all the money he spend on it) but I wanted something different. I started browsing the internet and after a while I came across the Losi LST. It was one of the largest and heaviest 1:8 MT available; exactly what I wanted!! So I started searching for materials that I need to start my E-conversion, it turned out I needed quite a lot and it was going to cost me a lot. My idea was to drop in a NEU 1521/1.5D 1900kv paired with a MMM and a NeuEnergy 5000mAh 5S 30C LiPo. I would than produce my own motor mount, lipo and ESC tray.

It’s the 11th of October 2008 and I just bought a Losi LST on eBay. After I got it I felt like a little boy and I kept on playing with the car, it was so huge and heavy, I loved it!

As time went by I adjusted my wanted setup a little. I bought a Castle/Neu 2200kv with MMM from America (when the Euro still had some value) and I took the LST completely apart. But back than the MMM ESC was experiencing a lot of troubles, since I didn’t want to have that I decided to sell the set. After that I bought myself a sexy Plettenberg BigMaxximum, a 4 pole 2300kv brushless powerhouse. In the mean time I had some good experiences with Quark, they were so smooth with no noticeable cogging and I loved that. So I went online and bought myself a Quark Airmaster 125B - originally build for airplanes - but also suited for my LST since I planned on using a 2-speed, thus eliminating reverse.

In the mean time I bought a Zippy 5S 5000mAh 30C LiPo and a TDRacing 2-speed pinion adapter, it now was Mid 2009. Together with my dad I build a motor mount and a LiPo tray.

After the LST was done I took it out for it’s maiden voyage, it was an awesome feeling! I actually got Goosebumps after the first few meters/feet. Unfortunately there also were some downsides … to make things short: the motor mount, battery and ESC tray were badly designed and build. Because of the bad LiPo tray my LiPo was dented during a crash which made the LiPo unusable. Besides this the LST broke down time after time after time; hexes, dogbones and other small stuff.

I was nearing the end of 2009 and I’ve totally had it with this car. Altough I bought some good electronics for this car it broke down again and again and again. I didn’t even empty one LiPo in total!! I decided that this wasn’t working so I decided to make the car as bulletproof as possible, so I started ordering parts; aluminium, carbon fiber, fans, wheels, tires, upgrades for the car and a lot of braided sleeving (see pictures later on

) and other stuff. The most important part was the LST1 to LST2 upgrade kit. When I bought the LST I didn’t realize that there were so many differences between the two, I found this out after my car had broken down several times.
I insisted on making several part on my own, it was supposed to be "my" thing and no one else could help. Unfortunately the most expensive tool I had at my disposal was a Dremel, you can image it took me some while to manufacture the parts I wanted. I started making the ESC mount out of carbon fiber and some aluminum 7075, two additional fans would also be placed to keep the ESC even cooler. After this it was motor mount’s turn, this was made from a 90degree piece of 6065 aluminum measuring 4mm in thickness. In the meanwhile I had someone annoying me every single day because progress was slow according to him, this person was called Cox (

). Next in line was the LiPo tray, made from some 7075 aluminium of 5mm. This was a LOT of work and consumed a LOT of time. Every CNC artist will laugh his ass off but I don’t care, I build this myself with a very limited availability of machinery, it’s very rigid and I’m very pleased with it :)!

I started building the LST again, piece by piece bit by bit. Every part had been thoroughly cleaned and lubricated when needed. I decided to solder some massive 8mm bullet connectors for the power and all cables on the car were braided sleeved. Especially that sleeving costed me hours and hours of work. While I was working on this that same annoying person was still screaming on the background asking when I would be done because he wanted to see it badly…

NOW I will start to show you some pictures of my precious ride, otherwise it might get boring

. Well before I go to that first some specs of my LST1.5:[list]
- Plettenberg Bigmaxximum 2300KV Brushless Motor
- Quark Airmaster 125B
- Flightmax 5S 5000mAh 40C LiPo
- Futaba 3PKS 2.4GHz Fasst
- Home made motor mount out of 4mm thick 6065 aluminium
- Home made ESC mount existing out of 2.5mm thick carbon fiber and some aluminium 7075, plus a "Dual fan" setup

- Home made LiPo tray made out of 5mm thick 7075 aluminium
- Braided sleeving: on every single cable on this car
- 8mm bullet connectors
- Some other stuff I forgot...

	(#1)
Byte Guest Posts: n/a	Losi LST1.5 - Brushless LST2: Bigmaxximum, Quark 125B, 5S - Flux & Revo killer - 05.30.2010, 12:09 PM Now that I’ve got your attention with my topic title "Flux & Revo killer" I can introduce my LST E-conversion . (If you don’t want to read a sad biography of my journey into RC or of my LST than skip the first post and start reading at the NOW part) Since the day I’ve been born I’ve been driving with quality RC cars, but about my 14th it really started to itch and I started buying one car after another… It’s near the end of 2008 and I have three cars, a Blazing Star, an E-Firestorm and a Rustler VXL. At that time Joram (he's also on here) had the first 1:8 E-conversion car in the car part of a Dutch forum (MBF) if I remember correctly. I immediately loved the idea of building a 1:8 MT to brushless. The Savage of Joram was very nice (well, it had to be after all the money he spend on it) but I wanted something different. I started browsing the internet and after a while I came across the Losi LST. It was one of the largest and heaviest 1:8 MT available; exactly what I wanted!! So I started searching for materials that I need to start my E-conversion, it turned out I needed quite a lot and it was going to cost me a lot. My idea was to drop in a NEU 1521/1.5D 1900kv paired with a MMM and a NeuEnergy 5000mAh 5S 30C LiPo. I would than produce my own motor mount, lipo and ESC tray. It’s the 11th of October 2008 and I just bought a Losi LST on eBay. After I got it I felt like a little boy and I kept on playing with the car, it was so huge and heavy, I loved it! As time went by I adjusted my wanted setup a little. I bought a Castle/Neu 2200kv with MMM from America (when the Euro still had some value) and I took the LST completely apart. But back than the MMM ESC was experiencing a lot of troubles, since I didn’t want to have that I decided to sell the set. After that I bought myself a sexy Plettenberg BigMaxximum, a 4 pole 2300kv brushless powerhouse. In the mean time I had some good experiences with Quark, they were so smooth with no noticeable cogging and I loved that. So I went online and bought myself a Quark Airmaster 125B - originally build for airplanes - but also suited for my LST since I planned on using a 2-speed, thus eliminating reverse. In the mean time I bought a Zippy 5S 5000mAh 30C LiPo and a TDRacing 2-speed pinion adapter, it now was Mid 2009. Together with my dad I build a motor mount and a LiPo tray. After the LST was done I took it out for it’s maiden voyage, it was an awesome feeling! I actually got Goosebumps after the first few meters/feet. Unfortunately there also were some downsides … to make things short: the motor mount, battery and ESC tray were badly designed and build. Because of the bad LiPo tray my LiPo was dented during a crash which made the LiPo unusable. Besides this the LST broke down time after time after time; hexes, dogbones and other small stuff. I was nearing the end of 2009 and I’ve totally had it with this car. Altough I bought some good electronics for this car it broke down again and again and again. I didn’t even empty one LiPo in total!! I decided that this wasn’t working so I decided to make the car as bulletproof as possible, so I started ordering parts; aluminium, carbon fiber, fans, wheels, tires, upgrades for the car and a lot of braided sleeving (see pictures later on ) and other stuff. The most important part was the LST1 to LST2 upgrade kit. When I bought the LST I didn’t realize that there were so many differences between the two, I found this out after my car had broken down several times. I insisted on making several part on my own, it was supposed to be "my" thing and no one else could help. Unfortunately the most expensive tool I had at my disposal was a Dremel, you can image it took me some while to manufacture the parts I wanted. I started making the ESC mount out of carbon fiber and some aluminum 7075, two additional fans would also be placed to keep the ESC even cooler. After this it was motor mount’s turn, this was made from a 90degree piece of 6065 aluminum measuring 4mm in thickness. In the meanwhile I had someone annoying me every single day because progress was slow according to him, this person was called Cox (). Next in line was the LiPo tray, made from some 7075 aluminium of 5mm. This was a LOT of work and consumed a LOT of time. Every CNC artist will laugh his ass off but I don’t care, I build this myself with a very limited availability of machinery, it’s very rigid and I’m very pleased with it :)! I started building the LST again, piece by piece bit by bit. Every part had been thoroughly cleaned and lubricated when needed. I decided to solder some massive 8mm bullet connectors for the power and all cables on the car were braided sleeved. Especially that sleeving costed me hours and hours of work. While I was working on this that same annoying person was still screaming on the background asking when I would be done because he wanted to see it badly… NOW I will start to show you some pictures of my precious ride, otherwise it might get boring . Well before I go to that first some specs of my LST1.5:[list] - Plettenberg Bigmaxximum 2300KV Brushless Motor - Quark Airmaster 125B - Flightmax 5S 5000mAh 40C LiPo - Futaba 3PKS 2.4GHz Fasst - Home made motor mount out of 4mm thick 6065 aluminium - Home made ESC mount existing out of 2.5mm thick carbon fiber and some aluminium 7075, plus a "Dual fan" setup - Home made LiPo tray made out of 5mm thick 7075 aluminium - Braided sleeving: on every single cable on this car - 8mm bullet connectors - Some other stuff I forgot... Last edited by Byte; 05.30.2010 at 03:29 PM.