Brushless LST2 conversion - This is how to do it!!!

[rchippie]

Originally Posted by lincpimp

Yep. I did the gear swap. Worst part was that the small screw holing the bevel gear on the idler shaft was tighter than a dick's hat. Had to file the sides flat (it was a button head) and clamp it in the vise to get it out. After that the case has to be slightly modded, about 30 seconds with the dremel. Not a huge gearing difference, but enough to help the limited spur selection for the lst.

I may have to hit you up for some kydex, but i have a few sheets left. I actually used one to make the chassis for my 2.2 crawler, and all of my buddies use the scraps to make mount brakets and such for their trucks. You kydex is all over Slidel!!!



No prob, I will search it out and snal a few pics. Just used a piece of 2x3 6061 angle and trimmed it to fit. It adjusts using the stock slotted holes on the chassis, which can be a paint in the ass to set the mesh. But it held the hacker motor fine, maybe a touch of up and down flex at the un-supported end of the motor.



Yeah, yeah, yeah, whatchya gonna do to me, huh?

I has a similar problem with that screw on my lst2 . Did you get the BAC drag link for the steering ?. I have thicker kydek if you need it . But it is cream in color & not black . I also have very thin kydex in light gray & drak gray if you need some .

[lincpimp]

Originally Posted by rchippie

I has a similar problem with that screw on my lst2 . Did you get the BAC drag link for the steering ?. I have thicker kydek if you need it . But it is cream in color & not black . I also have very thin kydex in light gray & drak gray if you need some .

I have not found a bac link yet, was looking for that and the al bellcranks for the steering. They seem to be the popular way to fix the steering slop (not much in mine), along with the mixture of Ar and losi servo saver parts.

How much thicker is the cream kydex? I may have you send me some of that and the thin stuff, as i am always making something, and it is good to have a variety of materials. Wonder if kydex can be dyed like other plastic?

[rchippie]

Originally Posted by lincpimp

I have not found a bac link yet, was looking for that and the al bellcranks for the steering. They seem to be the popular way to fix the steering slop (not much in mine), along with the mixture of Ar and losi servo saver parts.

How much thicker is the cream kydex? I may have you send me some of that and the thin stuff, as i am always making something, and it is good to have a variety of materials. Wonder if kydex can be dyed like other plastic?

I just measured it it's .186 in or 4.7mm .

I liked the ones without the bushings were the link mounts . these were the only one's i found . But they have the bushings .

http://integy.com/cgi-bin/webc.cgi/s...340&p_catid=75

[jayjay283]

Nice James, good stuff, looks like he has the mounts now. Now my only excuse for not finishing this is that Im broke lol. Easily solved, Thanks for posting all that up. Ill get mine rolling soon after the new year. .. BTW what gearing are you running (pinion). I have the FOC, Ti 54 spur. I think. (smallest Ti i could find) and some 23 gear that goes in the tranny to make it a little higher geared. (havent put it all together yet still in bags) Just copied off what you all recommended. Thx

[lincpimp]

Originally Posted by rchippie

I just measured it it's .186 in or 4.7mm .

I liked the ones without the bushings were the link mounts . these were the only one's i found . But they have the bushings .

http://integy.com/cgi-bin/webc.cgi/s...340&p_catid=75

Hmm, that kydex sounds just what I need.... Whats a sheet of that and some of the thin going to run me? Hopefully you charge a bit more than you usually do I don;t want to take advantage of you, buddy!

I saw those integy cranks... Maybe i will pick up a set, and have the machinist make me some stainless bushings for them... Where do you get the bac link? I had no luck finding it on the site everyone linked to, looked like that site stopped selling alot of stuff...

Originally Posted by jayjay283

Nice James, good stuff, looks like he has the mounts now. Now my only excuse for not finishing this is that Im broke lol. Easily solved, Thanks for posting all that up. Ill get mine rolling soon after the new year. .. BTW what gearing are you running (pinion). I have the FOC, Ti 54 spur. I think. (smallest Ti i could find) and some 23 gear that goes in the tranny to make it a little higher geared. (havent put it all together yet still in bags) Just copied off what you all recommended. Thx

Thanks Jay, appreciate the thumbs up!

The motor mount is nice, but I had some issues with setting up my gearing with it. I think you must have the TiN 59t spur, as that was the smallest I could find. Looks like you may need a 26t pinion to get the 59t spur to mesh, the tdr mount just does not quite get close enough to the tranny to mesh the 24/59 gearing I planned to run (my homemade mount was designed just for that gearing, with little adjustment). I am currently running 24/63, as the 24t pinion is the largest I have. Bit slower than I wanted, going about 38mph with that gearing, I like mid 40's.

24/59 gearing is 2.458:1
to get the same ratio with a 63t spur I would need a 26t pinion

But a 26t pinion with the 59t spur is 2.269:1 so maybe I will try that with the 1521 1y and see if the 4500 6s lipo can keep up...

Either way I need a 26t pinion, so time to give Mike a ring... Need to check my other projects and see if I need anything else form him before I order...

With the 23t gear for the tranny you mentioned... Not sure what you mean? the swap mod for the tranny just swaps the upper and lower gears so the larger of the two is the top gear. There is a write up on the lst forum under general info or tricks, good pics of the dremel work. Good luck getting the screw off that holds the bevel gear on... My was a PITA...

Heres the speed calc, the motor must be a bit more than 1500kv as the truck is a bit faster than 36...

Differential Ratio: 3.3076923076923075
Transmission Ratio: 1.9130434782608696
Spur Tooth Count: 63
Pinion Tooth Count: 24
Total Voltage: 22.2
Motor KV: 1500
Tire Diameter (inches): 6
Tire Ballooning (inches): .1
Spur/Pinion Ratio: 2.63 : 1
Total Ratio: 16.61037 : 1
Tire Circumference (inches): 19.48 inches (494.74 mm)
Total Motor Speed: 33300 RPM
Vehicle Speed: 36.98 mph (59.4 km/h)

I also have a c50 10xl, may swap that in for some more speed... This truck will have the 1521, just want to test these hackers first!