WARNING! Losi conversion KIT

[himalaya]

I have the same problem. I replaced the steel 45T spur with a plastic to have a quiter enjoyment. I spent 2 hours trying to get the center diff spin freely, after countless assemble and disassemble the spur was still touching something. I finally figure it was the chassis! dremeled a tiny bit(0.1mm depth I guess) of chassis off right under the spur, the problem goes away. and like Mentat's picture shows, the spur was so close to the mount that I can't insert a piece of paper into the gap.

Now my center diff spins freely, but new problem comes up. This time it's the pinion's turn to touch the mount. I have to pull the pinion 1mm farther away from the motor to let it run free. WTF do they design it this way. I coundn't use the plastic spur's full teeth width, only 4/5 width is contacting the pinion.

The fact is, Losi designed the plastic spur so wide that it almost get conflict with the mount, but that extra width can NOT touch the pinion, it does not work together with the pinion, which is what it was designed so wide for. Is that logical ?

Yesterday I managed to run my 8ight 2.0 E conv, finally. It did run great but I just can't say it was a perfect design.

[DwightSchrute]

Originally Posted by himalaya

I have the same problem. I replaced the steel 45T spur with a plastic to have a quiter enjoyment. I spent 2 hours trying to get the center diff spin freely, after countless assemble and disassemble the spur was still touching something. I finally figure it was the chassis! dremeled a tiny bit(0.1mm depth I guess) of chassis off right under the spur, the problem goes away. and like Mentat's picture shows, the spur was so close to the mount that I can't insert a piece of paper into the gap.

Now my center diff spins freely, but new problem comes up. This time it's the pinion's turn to touch the mount. I have to pull the pinion 1mm farther away from the motor to let it run free. WTF do they design it this way. I coundn't use the plastic spur's full teeth width, only 4/5 width is contacting the pinion.

The fact is, Losi designed the plastic spur so wide that it almost get conflict with the mount, but that extra width can NOT touch the pinion, it does not work together with the pinion, which is what it was designed so wide for. Is that logical ?

Yesterday I managed to run my 8ight 2.0 E conv, finally. It did run great but I just can't say it was a perfect design.

after reading your post, i just went and looked at a couple of my plastic spurs.....they don't all seem to be exactly the same width. I wonder why this is?

Still, if you get the RCM mount, you'll have zero issues with rubbing on the chassis as it raises the center diff a few mm and i don't get any rubbing on the mount from the spur either. I run 45T with no problems at all. Not only that, it's an awsome mount that allows you to gear as high or low as you want. that's one thing that no other 8ight conversion seems to offer right now.







the wheel freespin i get is crazy...no binding at all. RCM mounts rule!

The plastic spur definitely does not fit. It is too wide and the only way to get it to fit is to shim it away from the mount or sand it down.

However, if you set your mesh correctly, the metal 45 tooth losi spur works GREAT. It is nearly as quiet as the plastic. I have found that the metal to metal is loud if you set your mesh too tight, but just fine if you loosen it a bit.

You also have to dremel out the plastic hole covering a little bit as the spur may rub.

Other than that, the Losi kit is pretty nice. I like it in my 8t 2.0. Very simple to install and pretty solid.

[Mentat]

Where did u get the metal diff cup?

Originally Posted by DwightSchrute

after reading your post, i just went and looked at a couple of my plastic spurs.....they don't all seem to be exactly the same width. I wonder why this is?

Still, if you get the RCM mount, you'll have zero issues with rubbing on the chassis as it raises the center diff a few mm and i don't get any rubbing on the mount from the spur either. I run 45T with no problems at all. Not only that, it's an awsome mount that allows you to gear as high or low as you want. that's one thing that no other 8ight conversion seems to offer right now.







the wheel freespin i get is crazy...no binding at all. RCM mounts rule!

[DwightSchrute]

Originally Posted by Mentat

Where did u get the metal diff cup?

here:

http://cgi.ebay.com/ws/eBayISAPI.dll...m=390015827060

i have to use them because i run my center diff almost locked....basically with putty in it.

when you have that much pressure in there, geared the way i do, i blew a dime sized hole in the stock one. these are incredibly strong. I got one for all 4 of my 8ights. a good investment imo.

[Mentat]

I am running 50,000 weight in my 8ight-t what do you think about that? that be ok? not sure what weight to run being brushless

Originally Posted by DwightSchrute

here:

http://cgi.ebay.com/ws/eBayISAPI.dll...m=390015827060

i have to use them because i run my center diff almost locked....basically with putty in it.

when you have that much pressure in there, geared the way i do, i blew a dime sized hole in the stock one. these are incredibly strong. I got one for all 4 of my 8ights. a good investment imo.

[DwightSchrute]

Originally Posted by Mentat

I am running 50,000 weight in my 8ight-t what do you think about that? that be ok? not sure what weight to run being brushless

It depends on what you're doing. i'm all about high speed, high acceleration street runnin' so 50K weight didn't do anything but make my front differential "diff" out constantly. it felt like i was running a loose slipper is the best way i can describe it.

i went all the way up to 350,000wt and it still wasn't doing crap for my front diff, so i started using playdough in the center and leaving the front and back at the stock weight...that got me the results i wanted.

if you're gonna be doing alot of dirt track/off-road racing, just follow what the manual says and you'll be fine. if yomu're gonna be doing alot of parking lot stuff, i recommend using putty or playdough in the center or it's gonna feel like you're just spinning your wheels with no power.

[himalaya]

Originally Posted by DwightSchrute

after reading your post, i just went and looked at a couple of my plastic spurs.....they don't all seem to be exactly the same width. I wonder why this is?

Still, if you get the RCM mount, you'll have zero issues with rubbing on the chassis as it raises the center diff a few mm and i don't get any rubbing on the mount from the spur either. I run 45T with no problems at all. Not only that, it's an awsome mount that allows you to gear as high or low as you want. that's one thing that no other 8ight conversion seems to offer right now.

the wheel freespin i get is crazy...no binding at all. RCM mounts rule!

Yes, the RCM mount is what I am planning to invest.

Losi's mount is so thick that I can NEVER install my pinion like the way you did in you picture.
the Losi mount's center hole is so small that most of my mod 1 pinions can not be used because they have bigger bore(the untoothed section), like this one:

Also, the RCM mount allows the motor to move horizontally when adjusting mesh, making it much easier to make a motor rear end brace.

DwightSchrute from this pic it looks like you are using the Losi motor brace, how did you make it work together with RCM mount when adjusting mesh ? the mount moves the motor horizontally but the brace supposes the motor to move in a slope according to the losi mount ?

[DwightSchrute]

Originally Posted by himalaya

DwightSchrute from this pic it looks like you are using the Losi motor brace, how did you make it work together with RCM mount when adjusting mesh ? the mount moves the motor horizontally but the brace supposes the motor to move in a slope according to the losi mount ?

i'm not sure i'm understanding your question. are you asking how the top brace that is over the spur gear still fits with the RCM mount?

if so, the rcm mount has a spacer that goes under the front mount so it levels out the front and rear mounts to be the same height so it really dosen't have any effect on how the motor is moved when meshing. it also raises the center diff some because the rcm mount is a bit taller than the losi mount. i hope that answered your question.

or are you referring to the black "L" shaped plastic that goes under the losi mount? if so, you don't need that piece anymore when you use the rcm mount because their taller and allow for more clearance for the gear. i have since taken them all out of my 8ights. I imagine if you used both you might manage a 48t spur, but i'm not sure.

[himalaya]

Originally Posted by DwightSchrute

i'm not sure i'm understanding your question. are you asking how the top brace that is over the spur gear still fits with the RCM mount?

if so, the rcm mount has a spacer that goes under the front mount so it levels out the front and rear mounts to be the same height so it really dosen't have any effect on how the motor is moved when meshing. it also raises the center diff some because the rcm mount is a bit taller than the losi mount. i hope that answered your question.

or are you referring to the black "L" shaped plastic that goes under the losi mount? if so, you don't need that piece anymore when you use the rcm mount because their taller and allow for more clearance for the gear. i have since taken them all out of my 8ights. I imagine if you used both you might manage a 48t spur, but i'm not sure.

Sorry for the confusion, English is my second language.

I was talking about the motor brace that lays underneath the motor can to support the motor body during hard landing. This component:


It is arc shaped, when you move your motor horizontally, this plastic brace will get in the way. The brace was designed for Losi's 39mm motor, thinner 36mm motors may have less problem here, but will have no support on the rear end of the motor.