Some Q's on lst2 conversion
 

This will be my first conversion, my previous cars were rtr or bought post conversion. I got a roller decked out with rd logics for AU$200. A few things to fix as it was being sold as a parts car. Side note- nitro is gooey sticky sh:no:t.

Set up is planned to be- modded quark, 1521 1y, 5s lipo + 6s2p A123, geared to 40mph or more (depends).

Things I have already ordered- single speed spur mount, alu diff cups, ti-ni ring+spur for diffs, swaybars and wing.

Things I haven't- 59t ti-ni spur (and pinions), motor, motor mount, gear cover.

I haven't ordered the above list because I'm not overly keen on the dude racing motor mount. To me it just doesn't seem right to have so much motor hanging like that. I'm sure I would bend it with my 'driving skills'. So I wondered if a smooth can in a tekno mount could be fitted with a 59t spur. I reckon that would be more durable, but don't know if I could mount it close enough to the tranny. Of course, it needs to be mounted over the tranny mounting point so that's just a spacer of sorts, but because i don't have it in front of me, it's hard to picture in my head exactly how it will all come together.

So has anyone tried a different mount than the dude's? And is there anything I missed or should add to the list?

THIS WAS MY CONVERSION TOO......THE DUDE'S STUFF IS TUFF AS NAILS ,MY MOUNT WAS JUST A PIECE OF ALLY ANGLE AND IT HELD UP .
Upgrades as follows.
Forward only conversion
Losi sway bars
Losi black springs
Rpm arms
lundsford turnbuckles
Dynamite engine brace
New era alloy steering blocks
Mbx5t wing stay
Proline high down force wing
E-Revo body
Hd diff cases
Carbon fibre top chassis plate
Muggy shock towers
tini shock shafts
alloy shock caps
converted to single speed
(2)11kg mg995 metal geared servos
Custom made 30T Mod1 pinion gear
Medusa 36/80mm 2000kv motor
Mambo monster max esc
Large 50mm fan and heatsink.

THIS IS A VID OF IT WITH A FIEAGO 10XL ON 6S LIPO.........YEP... IT SMOKED AFTER 10 OR SO PACKS

[YOUTUBE]JZ8qDLu7MXI[/YOUTUBE]

I used to have the Finedesign motormount, and it was ok. But it limited motorchoices and gearing. Know I have the dude motormount with the MMM combo, and I am not affraid of ruining it at all. It is one solid piece of alu, and the motor fits perfect on it.

Thanks for replying guys. Great job jas21373 :great: I'm guessing you used the mugen wing mount because of the different shock towers?

I also have a medusa - 36-80-1600 with 2 of the medusa heatsinks to cover the whole motor. I was reluctant to use this motor because I don't want to be dissapointed in it's performance after running a 1515 in a rcm rc8t. A 1300w motor in a heavy lst2 and 1500w motor in a race truggy. I have a tendancy to gun it too, 160a spikes are a norm.

I forgot to ask about the diff oil too. That will need to be heavier than usual yeh? I've got some traxxas 30k, i'll see how that goes.

I have a foward only tranny on the way. I had pondered leaving the stock one in so I could utilize the high/low range to select bashing or speed runs, I think gearing for that would be difficult though.

jas your the guy who bought my e-maxx 3905 :) saw you on youtube.

Ok, the tdr mount and single speed adapter are top notch. I use both and would not hesitate to buy them both again. Nothing from tekno will fit next to the tranny.

You will have pinion issues with the 59t spur, stick with the 63t spur and you will not have clearance issues. I think a 25t pinion was the smallest that could be used with the 59t spur and the tdr motor mount. Go to the 63t and you can get down to a 22t pinion. Not alot of gearing options unless you go with the tdr colleted pinion adapter, as setscrew pinions only go up to 25t. Picking the correct motor/battery combo is very important.

I have the al cups and tin coated gears in my diffs. Never had an issue.

If you plan to run a medusa get the rcm bolt on front cover. The medusa motors have weak al front endbells and the screws strip very easily.

I run a 1521 1y on 6s lipo with a MMM. With 23/63 gearing, swapped single speed internal gears, and 6" tall tires I do about 40mph. 5s will not be enough, and I doubt the quark will like you much either. Unless you go with 2p on the a123 cells they will not work well either.

The Dude mount is Bomb, super tough and well engineered. You will NOT BEND it !

Using spur lower than 63 and a pinion 22T on down the mount will need a small mod to allow gearing varietys. It's a simple mod requireing a hack saw and metal file to allow the mount to be slid forward more. Takes 10 minutes and is super easy.
I'm running 64/18 with 4s and 5s and works great w/no heat issues with M.M.M.-2200kv
http://i88.photobucket.com/albums/k1...z/P4290003.jpg
http://i88.photobucket.com/albums/k1...z/P4290005.jpg

Another "the TDR mount is awesome" vote here.

You will not bend the mount, I guarantee. I highly recommend the colleted pinion adapter too because it just makes things much easier on the LST2.

How well does your truck balance with you lipo like that ?.

Very I would say... The batts up front improve driveability, keeping the nose planted :)

I would think it would be better up FR as well . Not in the RR like the FD one . It's a lot eaiser to blip the throttle to bring up the FR end if it's to low with the battery up FR . Rather than having the lipo in the back as i have seen before .

These 18 nimh cells still lifted the front with no trouble in my truck... I definately recommend mounting further forward =)

http://ace-cars.de/DE%20AC/Umbaus%E4...si/LST%205.JPG

Thats alot of cells you have there :lol:. I spot a lehner in there . what size is it ?.

I have been saving for some 6S lipos for a couple years now - i get sidetracked with other stuff WAY to easily -lmao-
Lehner 2230 11t - so much power even with the nimh - i really wanna run it on 7S (3S+4S in series hehehe) Havent driven this in a long time tho - got rid of the nimh packs and have no lipos to suit it -lol-

Forgive my ignorance, but what is the "TDR" mount, and where do you get it? Is "The Dude Mount" the same thing orr?

Those huge packs I (had) were CrampAmps packs 4s 8000mah and weighed 24oz's and the nose still reached for the sky if the slipper wasn't adjusted to perfection. Since I ditched them and run smaller 5000mah 4s I had to loosen the slipper all the more but the truck jumps and drives better as a result of less weight.

Td racing (the dude) is the mount you want. It is kick ass! Here is my conversion.

-Full HD chassis and plates
-HP center plate
-FOC
-TDR mount
-TDR single speed adapter
-RPM arms
-Lunsford turnbuckles (arms and steering)
-Hard coated shocks
-Al shock caps
-40 series Big Joes
-TL Sway bars
-TL Wing kit
-TiN diff gears and spur gear
-MMM 2200
-6s lipo
-TRX MMM mount
-DX3R
-Dynamite steering setup
-Custom lexan battery tray
-Custom lexan ESC tray

http://usera.ImageCave.com/jailbird1...ELST2-FULL.jpg
http://usera.ImageCave.com/jailbird1...LST2-CLOSE.jpg

-JB

Thats a nice truck :smile:.

I will probably go to 6s lipo eventually. Depends if the quark gives out on 5s. If it does then hopefully the ICE hv 160 will be out by then.

So it's settled, I'll get the tdr mount and colleted adapter, 63 spur and a variety of pinions.

I had an idea these things were popular. Thanks guys.

ahh the e-lst, it's kind of like a rcm rite of passage! Here's mine, another big ups on the dude mount. I cheaped out and just jbwelded instead of buying the single speed, I'll get around to it one day. mmm, dusa 36/70/1600, run it on 5s, tons of power, stays cool, just needs to be a tad faster, I'll get a 26 or 27t pinion one of these days.

http://img.photobucket.com/albums/v6...9upload508.jpg

THe Dude motor mount for life. I use a Neu 1521 1600 KV with 23/66 (not in the photo) at 6S.

http://i361.photobucket.com/albums/o...y/DSCN4348.jpg

Everyone seems to have roughly the same setup. That's reassuring for me :tongue:

Although I hav seen some running 4s and I think that might be pushing the limits. I thought the idea of this conversion is to make it as fun as possible with out the worry of breaking as much, electronics included.

Explain please ?
I've ben running 4s in both my ELST's for several years with zero issues ?
4s is definitely enough voltage, I still break a diff or axle now and again and runs nice and cool.

yeh...the standard wing sat to high for the revo body so modded the mugen wing to fit...30k diff oil was what I use in mine.With the forward only ,do the gear flip mod for a bit more top-end ,the mod is (fit the gears opposite to what is in the instructions) you also need to dremel a bit out of the gearbox case to allow the gears to turn freely.I was also running 30/63 gearing.....yeh mate its me....Emaxx is a killer and heaps of fun,few hop ups on it now ,got a 36-70-2000 Medusa and mamba max in it now.

I don't know how hot it gets where you are Bondo but I live Oz and will expect 40C / 100F in the comming summer. So I would like to keep the volts up and amps/heat down.

When running good batteries and good electronics you can get by with 4s. But once you go with a lower kv motor and 6s you will never go back.

Lower kv and 6s lipo will provide the best temps. With the availability of the MMM there is no reason to not run 6s. Especially when the 1717 CC motor on the horizon. I gave up 4s in heavier vehicles, too many amps and the power reserve is so much better with 6s.

Jailbird, what spur gear are you running?

95degrees are normal temps w/95% humidity.

Linc clarified.

I'm running 22/63 for gearing (the TL TiN spur). I saw a link for a speed calculator here somewhere, and with this gearing the truck has 1:1 rollout. I figured that was a pretty good place to start.

-JB

Here is my new LST2 conversion.....

Nice truck jzemaxx. Are you using the stock drive shafts from the gearbox? Is the gearbox from 3905? I like how it removes the spur and slipper from hanging over the side. It doesn't look like it would be to difficult to do either.
Good one :yes:

My main issue with ditching the stock lst tranny for the 3905 unit is that you then introduce torque twist from the motor perpendicular to the tire axis. Maybe a minor concern but i like how the chassis does not lean under hard acceleration and braking. Plus i think the lst tranny is stronger than the emaxx. I do not like the long input shaft end that sticks out when using the tdr hub and spacer, so I plan to thread the shaft and find a larger thrust bearing so I can eliminate 1" or so of it. I also plan to modify the gear cover to fit back on as well. That is my only issue with the driveline on the lst, the rest is great!

The tranny is from the E-revo. As for the shafts...they are stock.

No problem with torque twist so far with the setup. Ran its first race this past weekend, and TQ'ed and won the main. Went faster first time out then my Revo did all year. The Revo won many races this year and I still love it, but this thing flat out outhandles, out turns and out jumps the revo. As for the E-revo trans, I have yet to see one break. I have ran alot more power through these tranmissions then I currently am running now.


The Revo.... http://www.rc-monster.com/forum/showthread.php?t=19479

Glad you are having good racing success with the LST. Those big shocks sure do smooth out rough areas. I have been much more impressed with the lst handling than the revo, which is surprising to me as the revo is lighter and has "super extra gangster" suspension design. I guess the big shocks and losi geometry just works better, huh!

My LST2 is .2lbs lighter then my Revo. If you look closely, my LST2 is not using stock shocks. They are 8T 2.0 shocks, Carbon Fiber 8T shock towers and swapping to the E-revo tranny saved ALOT of weight. Also I have droop screws on mine which makes a HUGE difference in handling as I can alter droop for different tracks. Essentially this truck is nothing more then a MT truggy...lol

Nice mods to the LST, glad it's working well.
I have a Carbon fiber chassised LST as well thinking of incorperating a CD in with RCM motor mount. One of my many "next" builds.

This truck is set on the XXL wheelbase. The guy I bought the truck from did a extensive build on it. The entire truck is Carbon Fiber.

Droop screws?

Yes it lets you limit suspension travel downward for tuning turn in, rough sections of the track and rotation of the truck. All your pro truggy's and buggys's have them. No MT that I know of has them.

I had to look that up- interesting for sure.

Probably one of, if not the first CF XXl then ? Cool.:great: