My LST and Muggy Conversion Thread

[JThiessen]

Just a small update: I finally got around to starting some of the assembly.
Got the Diff's rebuilt and installed in new aluminum cups. Used Muggy ring and pinion in them to get the ratio down a bit more to help with spur/pinion choices later on. One thing I noticed is that the gear mesh (ring/pinion)changes rather significantly as I spun the gear. I've never experienced this with the Traxxas and Savage diff's that I have rebuilt.

Installed the diff's into the Hot Racing Aluminum bulks and rear bulk support. Also used Hardcore Racing titanium upper plate, and hinge pin retainers. And of course the Lunsford Ti hinge pins. One of the bulks did not get the holes tapped very well - every one of the fasteners on it was damn tight - even the hinge pins took some extra work to get in. The other side was fine. Also installed the Ti Arms and Dynamite carriers, and the Losi hardened skid plate.

Remember - I'm converting an original LST, so I wasn't prepared for the carrier pins to be too short. Luckily I had two new Muggy A-arms sets, and stole the pins out of those. But after installing them - it looks like they are too long. I used all the shims they gave me, but looks like there should still be more. I'm also not certain that I installed them correctly - should the shims be used on the inside, or the outside? I also did very little shimming on the hinge pins. Should these be kinda loose, or nice and snug (but still allowing the arms to rotate freely)??

[JThiessen]

Those Flextek's sure look nice. Will be interesting to see how the hold up to heavy bashing.
I'm putting this part together so I can get more measurements for the design part - gonna need to get some custom shafts made. Anyone know if mike can do shafts that will mount to the LST style center drive cups?

Gotta order some additional carrier pins for the front, and some XXL carrier bearings. Just about done spending bucks on this thing - I'd hate to add up all that I've spent on it so far - gotta be over a grand so far. Kinda wondering why I even bought the roller in the first place - I think I'll only end up using the shock towers, bumpers, and a couple bearings off it!!!

Couple more pics...

[JAILBIRD]

Originally Posted by JThiessen

Those Flextek's sure look nice. Will be interesting to see how the hold up to heavy bashing.
I'm putting this part together so I can get more measurements for the design part - gonna need to get some custom shafts made. Anyone know if mike can do shafts that will mount to the LST style center drive cups?

Gotta order some additional carrier pins for the front, and some XXL carrier bearings. Just about done spending bucks on this thing - I'd hate to add up all that I've spent on it so far - gotta be over a grand so far. Kinda wondering why I even bought the roller in the first place - I think I'll only end up using the shock towers, bumpers, and a couple bearings off it!!!

Couple more pics...

I ran into the same thing when I put the Dynamite knuckles and carriers on my LST project. The best thing I found were some plastic washers at my local hardware store.

On a side note with the pins, I once saw some that didn't use the e-clips. They were like a shoulder screw and used a nyloc nut. I haven't had any luck finding them again though.

-JB

[JThiessen]

Originally Posted by JAILBIRD

I ran into the same thing when I put the Dynamite knuckles and carriers on my LST project. The best thing I found were some plastic washers at my local hardware store.

On a side note with the pins, I once saw some that didn't use the e-clips. They were like a shoulder screw and used a nyloc nut. I haven't had any luck finding them again though.

-JB

I saw that once too - but can't remember where at.
I actually looked through our shoulder bolts here at work, and none of them in that diameter were long enough.

[JAILBIRD]

Originally Posted by JThiessen

I saw that once too - but can't remember where at.
I actually looked through our shoulder bolts here at work, and none of them in that diameter were long enough.

I ran into the same thing. I even tried McMaster Carr without success. One of my vendors at work makes us custom screws but they have a design fee and a 20k piece minimum order, so that option is out.

-JB

[JThiessen]

Made some decent progress this week. Got the prototype upper and lower plates cut. Had to make the upper plate twice as I found that some of my hole locations were off a bit, and had to reduce the taper on the front by 1/2 a degree. Still have one set of holes that are off by about 1mm.
First I had to finish up the front end and get some shocks put together for the rear (still waiting on a pair of Ti shafts for the front). I had originally purchased Dynamite Red bodied shocks, then changed my mind and bought a set of Losi threaded hard anodized ones. Only issue at first was that I would have to get the shock ring re-anodized red to match the truck. I was going to use the red caps off the Dynamites, and hopefully end up with a decent looking shock. Well, the cap wouldn't thread on to the Losi's. I then tried the stock blue caps, and they threaded onto both shock bodies fine, and the red caps threaded onto the stock blue bodies.....don't have a clue what could be happening here, but it's fairly obvious I'm not going to be able to use the hard anodized ones.

Also added some Dynamite red chassis braces.

[JThiessen]

Next up was assembling the RCM Slipperential, and installing the RCM Muggy motor mount. Had to do a little filing of the slipper pads on this one, other than that it went together a little better than the first one. For those that are going to get a slipperential - just prior to mounting the small end cap, screw the tightening ring down. It will help to make sure you dont get the cap on slightly crooked. I thought I had it all together and went to adjust the ring to the initial setting, and it wouldn't budge. I think I may have stripped out the threads on the ring as I was attempting to tighten it. Anyway, I pulled the cap off, screwed the ring down, and replaced the cap and it went together correctly this time.

The new Muggy motor mount is anodized black - unfortunatley, I dont think they oversized the bearing hole to account for the anodizing. I had to use my dremel and a sanding drum to remove the anodizing to get it to fit the bearing. Its got a tad bit more "slop" than I really want, but I dont think it will be bad.

[JAILBIRD]

Originally Posted by JThiessen

I saw that once too - but can't remember where at.
I actually looked through our shoulder bolts here at work, and none of them in that diameter were long enough.

I know this is from a while back, but I finally found those threaded outer pins. STRC makes them.


http://www.teamstrc.com/ebproductdet...mainid=3&id=68

-JB