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Tekno NB48 2.0

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Old 09-11-2019, 05:44 PM
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Originally Posted by fiveoboy01 View Post
Don't see why it would matter, you still have the same sealing o-ring on the inside. They don't leak now, can't imagine a bearing there will change that. As for the bearings failing, it's just another maintenance item. You should be in your diffs fairly often anyways. Diff bearings usually don't fail as often as say hub or clutch bearings. They're not subjected to the same abuse.

Based on what I read in the article it appears that bearing supported outdrives, are trying to achieve longer diff life between rebuilds. Less metal to metal contact will result in less friction, which means less heat, which means diffs being cooler and not cooking your diff fluid as quick.

Thatís my best guess. Maybe it will be fairly innovative and might be the new standard for Diffs, we havenít always had bearings in every part of our cars but the more places they have added them. The better they seem to work for us

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Old 09-12-2019, 12:30 AM
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Double bearings only in the center diff..

By the way, did anyone notice, the engine mounts some 12 to 16 mm more to the rear against the .4 ?

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Old 09-12-2019, 01:19 AM
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Originally Posted by fiveoboy01 View Post
Don't see why it would matter, you still have the same sealing o-ring on the inside. They don't leak now, can't imagine a bearing there will change that. As for the bearings failing, it's just another maintenance item. You should be in your diffs fairly often anyways. Diff bearings usually don't fail as often as say hub or clutch bearings. They're not subjected to the same abuse.
I know, but the grease we use also helps with sealing.
The bearing for the outdrives are small bearing and are more likely to fail.

But weíll see. Iím looking forward to seeing one the track.
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Old 09-12-2019, 10:06 AM
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Originally Posted by speedy2 View Post
Double bearings only in the center diff..

By the way, did anyone notice, the engine mounts some 12 to 16 mm more to the rear against the .4 ?
There's a few reasons we did this. If we had the diff flipped we wouldn't have been able to have both the double bearing center diff and a split center diff mount. (Maybe if the whole mount was machined aluminum but that would be very expensive and add weight.) Also having the engine back allowed for a lower profile fuel tank. We did a lot of other things to move weight forward on the 2.0. On the scales the 2.0 kit actually has a slightly better forward weight balance than the .4 despite the engine placement.

Originally Posted by morgoth View Post

I know, but the grease we use also helps with sealing.
The bearing for the outdrives are small bearing and are more likely to fail.

But weíll see. Iím looking forward to seeing one the track.
For the center diff - the inner bearings are 6x5x13's and the outers are 15x21x4's, both extremely durable bearings. We haven't had a single failure in either one of those in a year of testing. I've broken the outer one once because I forgot to slide it off before removing the screws to remove the spur gear but that's my fault.
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Old 09-12-2019, 10:32 AM
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Originally Posted by Matthew_Armeni View Post
For the center diff - the inner bearings are 6x5x13's and the outers are 15x21x4's, both extremely durable bearings. We haven't had a single failure in either one of those in a year of testing. I've broken the outer one once because I forgot to slide it off before removing the screws to remove the spur gear but that's my fault.
Thanks for the info. The small bearings are the ones that support the pinions in my mbx8 buggy and I haven't had a failure yet, so they are indeed strong enough. I though they were going to be clutch bearing judging by the picture.
I'm looking forward to part 3 to see what else is new :-)
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Old 09-13-2019, 11:40 AM
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Old 09-13-2019, 06:31 PM
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The new pictures Tekno put on their website today look great ! I’m really liking the idea of easy access front and rear diffs, changing them on previous versions was kinda a pain but this looks remarkable ! Even the center diff setup looks great. I like the design of having the brake pads and cams come off with the linkages attached so you don’t loose any settings when serving the diffs. Tekno really knocked this one out of the park, has anyone got their kit yet ?


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Old 09-13-2019, 07:28 PM
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Originally Posted by Shady3275 View Post
The new pictures Tekno put on their website today look great ! Iím really liking the idea of easy access front and rear diffs, changing them on previous versions was kinda a pain but this looks remarkable ! Even the center diff setup looks great. I like the design of having the brake pads and cams come off with the linkages attached so you donít loose any settings when serving the diffs. Tekno really knocked this one out of the park, has anyone got their kit yet ?



Hopefully soon, they said shipping by next week with them. Also liked how they did the preview and preorder at the same time. So many times you see companies show a new rc and then say will ship a month from now or team drivers will get thereís first then release to public. Really like how they opened it up to everyone.
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Old 09-14-2019, 03:14 AM
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Old 09-14-2019, 03:15 AM
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Old 09-14-2019, 03:16 AM
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Old 09-14-2019, 03:16 AM
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Old 09-14-2019, 03:18 AM
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Old 09-14-2019, 03:20 AM
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Old 09-14-2019, 08:44 AM
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anyone else getting an O'Donnell Z01b vibe here? New buggy looks good.
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