11LikesAny modern TC with a front differential or one-way
04-28-2018, 01:57 PM
#16
See, like I said: Tamiya. 
But a simple, non-sealed diff with greased gears (at least per manual), not quite like the silicone oil filled ones of today. Tamiya had used these for many years earlier, but that design, as of that of pretty much all Tamiya cars wasn't exactly considered race-worthy back then. I turned my back at Tamiya after the TA03 (TRF).
Of course all that changed with the famous 404/414 design, with which they started kicking some major ass - but that car was rarer than unicorns over here - so I'd consider it more an exotic than an average car of that time. Thinking back at the Corallys, Yokomos, HPIs, Associateds, etc. I saw around me, I cannot remember (though I might be wrong) any of them coming with gear diffs. One-ways were available as options for most cars, as I recall, but people here weren't all that excited about them, since braking got very hairy, so most stuck to (ball) diffs all around. I still have a working one-way diff for my Yokomo SD SSG from 2003 - in fact I have all options (well, except a gear diff) for that car: spool, one-way and ball diff). Haven't driven it for 10+ years though, but as soon as get some Lipo holder 3D-printed, I'm lokking forward to seeing how much life that vintage RC still has left (of course only for lower power, slow class, VTA-like).
But a simple, non-sealed diff with greased gears (at least per manual), not quite like the silicone oil filled ones of today. Tamiya had used these for many years earlier, but that design, as of that of pretty much all Tamiya cars wasn't exactly considered race-worthy back then. I turned my back at Tamiya after the TA03 (TRF).Of course all that changed with the famous 404/414 design, with which they started kicking some major ass - but that car was rarer than unicorns over here - so I'd consider it more an exotic than an average car of that time. Thinking back at the Corallys, Yokomos, HPIs, Associateds, etc. I saw around me, I cannot remember (though I might be wrong) any of them coming with gear diffs. One-ways were available as options for most cars, as I recall, but people here weren't all that excited about them, since braking got very hairy, so most stuck to (ball) diffs all around. I still have a working one-way diff for my Yokomo SD SSG from 2003 - in fact I have all options (well, except a gear diff) for that car: spool, one-way and ball diff). Haven't driven it for 10+ years though, but as soon as get some Lipo holder 3D-printed, I'm lokking forward to seeing how much life that vintage RC still has left (of course only for lower power, slow class, VTA-like).
04-28-2018, 02:09 PM
#17
One-way Tamiya (54726)
Ball Diff Tamiya (54689)
TA07 Pro Kit Tamiya (58636)
...sorry, bored at work and no one to chat with besides these forums, hahah
04-28-2018, 02:10 PM
#18
But B44? The buggy? Thought we were talking touring cars here?
Anyway, I can understand the OP for being a little surprised after the long break from the hobby, from when one was used to cars coming with ball diff /one-way in front and ball diff (mostly
) in the back, to now with spools front and gear diff in the back. But wait until you discover 2.4GHz radios, brushless systems and lipos, if the drivetrain already amazes you...
04-28-2018, 03:45 PM
#19
I'm still running an old xray with front one way, won the winter club championship in the lower 17.5T blinky class. It's so much more rewarding to drive and can be extremely quick when you get it right. I guess they fell out of favour cos you just cant hammer on the controls and expect the car to stay on line, also the lack of front brakes is no good for modern day mod speeds on tracks with hairpins. After all, 1/8th scale cars still run front one ways and rear spools and they are very quick.
04-28-2018, 08:08 PM
#20
i read somewhere awhile back that one ways were not allowed at many major events, said something about the drastic differences in driving styles it creates vs spool drivers braking into turns and acceleration differences.
i have run in the past front oneways on two different 4wd 1/10 buggies, they used to fail alot but i still ran them. i tried one instead of a ball diff on a TC3 around 2004. in the buggies it gave the feel of a 2wd on straights and when braking into turns since only rear tires grab, came into play at lower speeds when front steering was needed out of turns. on my TC3 since TC tracks could be rather subpar, outside, lacking prep with a possible blow off only i ended up going back to front ball diff. i tried a oneway again when a carpet track opened. was rather brutal on front end parts due to the insta snap you get with a one way, ended up back with front ball diff. with todays brushless motors, i would not imagine a one way being reliable
i have run in the past front oneways on two different 4wd 1/10 buggies, they used to fail alot but i still ran them. i tried one instead of a ball diff on a TC3 around 2004. in the buggies it gave the feel of a 2wd on straights and when braking into turns since only rear tires grab, came into play at lower speeds when front steering was needed out of turns. on my TC3 since TC tracks could be rather subpar, outside, lacking prep with a possible blow off only i ended up going back to front ball diff. i tried a oneway again when a carpet track opened. was rather brutal on front end parts due to the insta snap you get with a one way, ended up back with front ball diff. with todays brushless motors, i would not imagine a one way being reliable
04-28-2018, 08:09 PM
#21
Thank you very much!!!!! This looks like a kit i'm after!
04-30-2018, 09:38 AM
#22
04-30-2018, 09:51 AM
#23
I prefer front diffs instead of spools , I think the spools are in kits so its cheaper for them not better for you.
I think I'm in the minority on that .
I think I'm in the minority on that .
04-30-2018, 12:26 PM
#24
I find that hard to believe. Tamiya kits come with diffs at both ends, unless you get an advanced kit. Then sometimes, they come with a spool. In the case of the TA07, the pro comes with two diffs, the R comes with a spool and a diff.
Spools also require more expensive outdrives and drive shafts.
Now, I am also in the group that believe diffs at both ends is "faster". I believe the spool obsession is for "simplicity" and "stability" as opposed to outright performance.
Spools also require more expensive outdrives and drive shafts.
Now, I am also in the group that believe diffs at both ends is "faster". I believe the spool obsession is for "simplicity" and "stability" as opposed to outright performance.
04-30-2018, 01:08 PM
#25
In the past I ran an Xray T4 14 with the Xray 3-way diff up front and the car was ballistic. This diff gave you the option of making it a one-way or a spool, or a hybrid of both. This was on a very large and open asphalt track. You certainly have to adjust your driving style. It's worth a look if you can find the diff.
04-30-2018, 01:50 PM
#26
...most TC cars will allow you to install a diff up front if you want, -its not really a bid deal to do so.
04-30-2018, 03:56 PM
#27
To the O.P.: I say run a diff up front and see if you like it, you can fit a rear diff to the front of most major brands of cars.
04-30-2018, 05:43 PM
#28
Tech Master
iTrader: (15)
Back in early 2000's, Some big events required four wheel braking so out went the one way. It made for fewer wrecks and better racing as drivers were able to slow the cars down without unsettling the car. With todays cars, the geometry is so much better, a one way isn't needed or even offered. I like the spool/diff better as it forced you to use your brakes for certain track layouts.
05-01-2018, 04:03 AM
#29
In the past I ran an Xray T4 14 with the Xray 3-way diff up front and the car was ballistic. This diff gave you the option of making it a one-way or a spool, or a hybrid of both. This was on a very large and open asphalt track. You certainly have to adjust your driving style. It's worth a look if you can find the diff.
05-01-2018, 08:28 AM
#30
The multi-diff worked well because you could simply pin it to go from a one-way to a spool. It was very innovative.
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