Losi Steering mod design

[84yoda]

No you can't drill the housing for pinion. You might be able to rig up 2 halfs with pinion on both sides (like what you would do on a scx housing). Yes they need grease added every run, they eat grease like crazy but it will last 1-2 hour. Might wanna check out john deere hd moly grease. Axial uni's need added material to the end to fit a losi locker.

 

[CODYBOY]

All my rigs already run 4s. :lol:

That doesn't answer the question about being able to reverse them though. I'm also assuming an axial type axle shaft slips into the locker with some mods?

Yes, the axial unis are modified a couple different ways depending if it is for scale width or Xr width. "thumbsup"
Ernie

 

[Robbob]

I dont recall ever having or seeing torque twist in the 2 seasons I ran my old LCC. ;-)

But I dont think you could flip the worm gear with out problems. The spool is cut on an angle so the teeth wouldnt mesh squarely. You would end up wearing the corners of the spool teeth and not the center where the contact is suppose to be.

You could slip an axial tang into the locker if you file the rounded edges square but the two existing flat spots are too skinny. They would end up walking around and probably round the corners off.

The grease is the easy part. Tap a small 4-40 hole in the cases and use a plastic syringe. I use to use paintball gun grease, very low fling property so it stayed on the gears with out dragging them down. Shoot some in the night before any comp and I was good to go. Never had a problem either of it melting down and oozing out the seams either.

The biggest maintenance part of a Losi was the motors. If you didnt take the easy route of brushless then you were rebuilding your motors once a month. Thats if you were a smooth driver, like binding things up and torquing your way out then it was more often. Brushless was a better way all around it but took a bigger bite out of truck space with the ESC and the motor.

Wasnt a truck you could throw a big mah battery in and run it dry or run batteries back to back and not expect to cook something. But def was a truck you could win with.

 

[WHITE-TRASH]

So having all that reduction in the axles eliminates the torque twist. That makes sense for sure.

I'm still pondering the future but the more info I gather on all avenues the better. Thanks. :mrgreen:

 

[goobs]

That doesn't answer the question about being able to reverse them though. I'm also assuming an axial type axle shaft slips into the locker with some mods?

why do you need to flip reverse them?
if you could find a worm with an extended rear shaft, you can use two front sections of housing (with minor mods) and just go to the the third axle.

iirc someone did this...i could be wrong though.

 

[WHITE-TRASH]

why do you need to flip reverse them?
if you could find a worm with an extended rear shaft, you can use two front sections of housing (with minor mods) and just go to the the third axle.

iirc someone did this...i could be wrong though.

I currently run one axle in reverse rotation to cut down on torque twist which isn't needed with these axles. I also have built in overdrive on the front output which is something I don't want to give up. Maybe I'll have to build another trans with just offset gearing to run losi axles.

 

[EeePee]

Losi has/had two different worm/spool gear combos. 21:1 and 25:1

 

[84yoda]

The eagle has landed! :mrgreen:

But rain starts again tomorrow so testing won't happen for probably another week.

 

[CODYBOY]

The eagle has landed! :mrgreen:

But rain starts again tomorrow so testing won't happen for probably another week.

Glad it made it to you ok. I'm looking forward to hearing how it holds up."thumbsup"


After working on these axles for a couple weeks I decided it was time to dust off my old comp crawler. It spent a couple years in some one else's shop, but it came back home a few months ago. Here is how it looked when I opened it.



So having said that, this came in the mail from Robbob today. It will surly help with the build.



Also got this today, I said I was going to show you some cool additions to your axles, Erik at Dlux makes some nice products. I think white trash was talking about doing something like this. So I went right to the scale with these and the tubes for a axle, 11+oz of non rotating weight for the front of your rig.



Here is how I'm doing the XR unis to fit in the losi spool.



Maybe more tomorrow, thanks for looking!"thumbsup"
Ernie

 

[snapon boy]

Now that is what I'm talking about!..... If money was no object. The unstuck is a solid performer! Pm me if you need (don't think so tho) any chassis tuning help. I've got Jr's as close as I can.

149 r/c worx Team Driver

 

[WHITE-TRASH]

Good chassis choice for sure. Brass knuckles are bad ass too. I started with a set of them and ended up putting them on my rental and getting aluminum knuckles with loaded dice for the main rig. It's a slippery slope you're on... :lol: only problem I see is you didn't do 8mm stubs, they're the cats ass.

I wonder if it'd be easier to make a new spool to fit axial shafts?

 

[84yoda]

Its way easier to modify the tangs over a new spool.

 

[WHITE-TRASH]

Its way easier to modify the tangs over a new spool.

Not when you have friends with access to super fancy machine tools. :mrgreen:

 

[eric113]

Wouldn't be easier to have inner shafts made to fit the spools.

 

[WHITE-TRASH]

When there are already many options on the market that are bomb proof like FBA's why make yet another batch of shafts with such a limited market? A simple locker would allow for any similar tang shaft to be used.

 

[eric113]

A simple locker would allow for any similar tang shaft to be used.

You do know that ring gear is machined into spool right? I don't think making a simple locker would work unless your machine friend is good and can cut gears also.

Wasn't talking about doing huge run shafts. I'm talking about making inner shaft to fit the spool properly and use the wraith universal stub. Making it bolt in thing somewhat. Instead of having the tig weld new pieces on.

What is FBA's?

 

[WHITE-TRASH]

Ahh I've never had a set of losi axles in my hand so no, I didn't realize the gear is cut into the locker. I wonder if a sleeve that fit the locker on the outside and axial type tang on the inside would be a better option? Make it a press fit on the ID so it can be reversed or reused in the event of axle breakage.

These are dlux's FBA shafts. 70* turning and damned tough. As far as I know only 1 has been broken and that was without a steering stop being used so they over rotated and broke.

 

[CODYBOY]

You do know that ring gear is machined into spool right? I don't think making a simple locker would work unless your machine friend is good and can cut gears also.

Wasn't talking about doing huge run shafts. I'm talking about making inner shaft to fit the spool properly and use the wraith universal stub. Making it bolt in thing somewhat. Instead of having the tig weld new pieces on.

What is FBA's?

It is the unis that Erik modifies with a stronger tang shaft. They are also machine to reach the 70 degrees. A set is in the above photo with the brass knuckle."thumbsup"
Ernie

I suppose you could mod the spool similar to what Robbob did in his build, but the tang mod only takes 1/2 hour and a little patience!

 

[eric113]

The sleeve would be a maybe. My guess on designing it would be complex because of going from losi square tang to 2 side axial tang.

Erik does make some badass shafts. He did at one point long time ago make some chromoly worm gear.

 

[CODYBOY]

You do know that ring gear is machined into spool right? I don't think making a simple locker would work unless your machine friend is good and can cut gears also.

Wasn't talking about doing huge run shafts. I'm talking about making inner shaft to fit the spool properly and use the wraith universal stub. Making it bolt in thing somewhat. Instead of having the tig weld new pieces on.

What is FBA's?

The sleeve would be a maybe. My guess on designing it would be complex because of going from losi square tang to 2 side axial tang.

Erik does make some badass shafts. He did at one point long time ago make some chromoly worm gear.

I still have a set!!"thumbsup""thumbsup""thumbsup"