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florianz · 05:00 AM

Just recently I've got myself an ofna torsen diff for the center.
pics

I've added some high pressure grease and some oil like that it works smoothly. A brushless-setup is just perfect for the torsen (balooning of front tires). there must be a solid reason that a "hummer" or a "audi quattro" have torsen diffs. and when it's ok for a hummer, it's ok for my buggy...

from my point of view, driving with the torsen is very different, you just can't compare it with a 100k-oil-center-differential. The torsen puts up to 80 % of the power to the axle with grip. That means you can't pull the throttle like before, this ends up in backflips. U must be much more sensitive with the trottle... in curves I think handling is also better than wtih a 100k diff. what can I say, It's just amazing, when bashing, acceleration is far better (being careful with the throttle!), you can get more power to the ground. almost NO pizzawheels in the front wow. I had to reduce the timing of the motor down to zero, just too much power...

as it is a buggy-chassis I have put some weight to the front. somehow reminds me of a quote I've read here: like an electric screwdriver on stereoids...

As my plane esc finally died from a bad soldering, I have time for a makeover of the buggy and to have a look at the torsen. There is NO wear after about 8 lipos. I've cleaned it, greased it and have put a bit of 15w40 engine motor oil into it. Like that, the grease is thinner and gets everywhere. just some normal oil would not be sufficient. Now the torsen works even smoother than before.

I increased the space of the "middle deck" above the steering servo, so I can place the new esc there (jamara flash, but not working on 5s yet...). the motor mount is super stiff. It's good when the chassis can flex a bit (torsion-wise), but NOT around the center diff.

My kind-of battery tray works great for many months now. Just once after a bad crash I lost the battery. I made it like that 'cos I like it simple. I dont't want to add a tray, some more scews etc, which is just weight. like that it's safe and simple. I know it has less "bling"-factor then e.g. a tekno kit, but, it's all self made, based on own ideas and, most important, it works well. the self made center bar is doing a great job, and the self-made front and back shock towers are just rock solid. aluminium is not always the first choice.

I have redone the Motormount a litte bit:

the motor mount is super stiff. It's good when the chassis can flex a bit (torsion-wise), but NOT around the center diff.

I am still very impressed of the losi motor, great torque; I have sealed the unused holes of the front endbell; sand and dirt are no good for the kevlar-bonding of the rotor.
These losi motors would deserve more attention.

florian

	(#6)
florianz RC-Monster Carbon Fiber Offline Posts: 354 Join Date: Sep 2008 Location: Hamburg, Germany	Torsen Diff & makeover - 07.10.2009, 04:34 AM Just recently I've got myself an ofna torsen diff for the center. pics I've added some high pressure grease and some oil like that it works smoothly. A brushless-setup is just perfect for the torsen (balooning of front tires). there must be a solid reason that a "hummer" or a "audi quattro" have torsen diffs. and when it's ok for a hummer, it's ok for my buggy... from my point of view, driving with the torsen is very different, you just can't compare it with a 100k-oil-center-differential. The torsen puts up to 80 % of the power to the axle with grip. That means you can't pull the throttle like before, this ends up in backflips. U must be much more sensitive with the trottle... in curves I think handling is also better than wtih a 100k diff. what can I say, It's just amazing, when bashing, acceleration is far better (being careful with the throttle!), you can get more power to the ground. almost NO pizzawheels in the front wow. I had to reduce the timing of the motor down to zero, just too much power... as it is a buggy-chassis I have put some weight to the front. somehow reminds me of a quote I've read here: like an electric screwdriver on stereoids... As my plane esc finally died from a bad soldering, I have time for a makeover of the buggy and to have a look at the torsen. There is NO wear after about 8 lipos. I've cleaned it, greased it and have put a bit of 15w40 engine motor oil into it. Like that, the grease is thinner and gets everywhere. just some normal oil would not be sufficient. Now the torsen works even smoother than before. I increased the space of the "middle deck" above the steering servo, so I can place the new esc there (jamara flash, but not working on 5s yet...). the motor mount is super stiff. It's good when the chassis can flex a bit (torsion-wise), but NOT around the center diff. My kind-of battery tray works great for many months now. Just once after a bad crash I lost the battery. I made it like that 'cos I like it simple. I dont't want to add a tray, some more scews etc, which is just weight. like that it's safe and simple. I know it has less "bling"-factor then e.g. a tekno kit, but, it's all self made, based on own ideas and, most important, it works well. the self made center bar is doing a great job, and the self-made front and back shock towers are just rock solid. aluminium is not always the first choice. I have redone the Motormount a litte bit: the motor mount is super stiff. It's good when the chassis can flex a bit (torsion-wise), but NOT around the center diff. I am still very impressed of the losi motor, great torque; I have sealed the unused holes of the front endbell; sand and dirt are no good for the kevlar-bonding of the rotor. These losi motors would deserve more attention. florian Last edited by florianz; 07.10.2009 at 05:00 AM.