Center One way TRF501X
 

Soon to be released for DB01 and TRF501X:54051 Center One Way (18T)

Any pics or links?

I was going to start a new thread on the new center one-way but I will just ask and throw it in here....

How will a front and rear diff, standard non-center one-way equipped 501 perform/act/handle vs. a front and rear diff, center one-way equipped 501? Here is Jimmy's explanation of the center one-way from a few days ago..."The centre one way works on the front of the car but is located on the centre layshaft pulley. So the pulley itself will freewheel when off power. When on-power its just like a 'normal' 4WD car. So you get a little more steering into the corner and an easy to drive car out of the corner without the same snappy handling of a front one way."

So if I understand correctly, the pulley for the front belt will free-wheel while the rear will not? Will the front wheels still not do any of the braking (drag or intentional)? I want the aluminum center pulley(s) without drastically sacrificing my 501's current performance, but... if it does add a little more steering compared to a crazy steering full front one-way, I will likely buy and try it!

it gives a little more turn in than a fixed 4wd, but less overal steering than a front one-way plus you still get the diff action.

DCM spot on!! except the fixed one way such as the 501x doesnt have that diff action so is just a one way.

I prefer the one way on the layshaft with a diff in the front, it gives better steering and better drive to the wheels than a fixed one way. I dont like the one way diff on the 501x, it doesnt feel correct, even with the same size diff pulley all round, hence why I am going to have to come up with a solution so I can have a one way on my layshaft with 16t pulleys.

Some like the one way fixed front, but without the one way, as DCM says it makes the car very difficult to drive and horrible in and out of corners, but the one way at the front or on the layshaft (not on the rear) kindof counteracts the back pushing and the front pulling into a corner at the same time and better balances the drive train so you can go at whatever angle into and out of a corner at what ever speed suits you.

Aaron,

I would suggest you buying the standard one way and trying it first. I am also waiting for alloy pulleys, if you have seen them add a link mate as I want to buy a set and trial them as well. If they do exist then I have something to work with to trial a one way layshaft.

actually, if you re-read it, I say the center one way is inbetween a fixed and a one way pulley up front, and is a little more tame due to still having diff action....

Why are you choosing to use the 16T pulleys? Nothing wrong with that, just asking.

I do not have a link but it sounds like the aluminum pulleys are only available with the new center one-way package. We will have to see if they are removable (like the plastic pulleys) or somehow locked onto the new center layshaft.

I would guess there is a way of shimming the center one-way on the driveshaft.

Aaron - I am unsure of the larger pulleys and diffs, its more mass in my eyes and more of a strain on the motor (thats my opinion anyway) and am using the 35t pulley all round and the 16t layshaft pulleys, which should accelarate a fraction quicker. I have seen the 18t one way pulley from this web site (the worlds pics) and I intend to make one from a touring car one way and a bit of dremelling on the alloy bits for the layshaft.

DCM I am a bit confused with what you wrote, so you have not only two one way bearings on the layshaft but also a one way front diff, or do you use a diff in the front and two one way bearings on the layshaft, if thats the case what are the part numbers as I will do that instead so I have a full diff at the front as well?

The front one way only moves one way so isnt really doing the proper job, yes it doing half the job but doesnt do it for me. I need a full working diff on the front and the layshaft to have the one way.

I could see your theory... but I bet a 5.5 or 4.5 brushless motor with a strong ESC punch setting will take care of your lack of acceleration VERY quickly! :woot: :)

Possibly, but I think Im not going to up to the big pulley system as I dont agree with what they are saying. Still I have changed to an 87 spur gear and will take Dans advice and try a 5.5 in brushless, but for the mean time back to corally brushed motors and maximum punch.

Anyone had the opportunity to race with the centre one-way yet? Any feedback?

New photo but likely not available yet (at least from TamiyaUSA).
http://www.tamiyausa.com/product/ite...oduct-id=54051

Maybe Jimmy can keep a keen eye out for it at the Euro Champs.

FOR ANYONE: Is anyone else driving a 501 at the Euros besides Hupo?

The big question for me is if anyone knows whether or not this layshaft oneway is adjustable for more or less freewheel like the Yokomo unit or is it full freewheel all the time, set it and forget it!

I know this is coming out soon, but will it affect if you are using a front
one way as well? "IT ADDS MORE STEERING" like the car doesnt need anymore
steering as it is.
Well, most people wont need it, but I'm sure people wanting every upgrade for the car will buy it.
I ran the car myself without the front one-way and it drove like no other, super easy to drive.
I dont see what else Id need for it.
I have a front-one way, Aluminim steering bridge etc..
I still dunno what the aluminum steering bridge is gonna do,
I havent installed it yet, or do I even need to?

Not yet, but when it is out i will get one. However its going to be just like the Yokomo or schumacher or Kyosho one ways that have been on their past cars (YZ10, Cat, Lazer ZX/ZXR), so I guess its down to prederence. Me I want a full working front diff instead of a half working unit which should slow the tyre wear rate a bit on the front, as well as giving you whatever slip (if you want that) setting you desire.

The centre one-way is out if you look in the right places.

Thats exactly what I want, im not a big fan of the front one ways as its a bit too brutal and even just a completely free center one way, i've always prefered a bit of braking to the front wheels but not a 50:50 split.

The system I had in my Cat was awesome basically a one way slipper clutch to the front.

Where?

The alu steering bridge gives you some extra ackerman options.

I never saw much use for a centre oneway. You loose 4 wheel braking and don't have the drive out of corners like you would have with a front oneway, and this with only marginally more steering.

And sure the TRF501X can use some more steering. I run a front oneway 90% of the time. Only on really rutted tracks do I use a front diff. I can only advice you to try the front oneway : for most people it makes the TRF a much faster car.

Alway remember (I think it was Andretti who said it) : "If you have everything under controll, you're not going fast enough." :)

Anywhere in the Far East.

I've been looking at these and I was wondering if there is anyway to lock so I dont have to rebuild the center transmission if i want to switch to a fixed 4wd. Also is there any way to make it adjustable so I can adjust the amount of braking to the front wheels ?

I might get it myself to play around with as im not that big of a fan of front one ways I much prefer there to still be a diff in the front. I miss the Cat 3k's adjustable front braking!

I see that Stella Models has these listed on Ebay at this time. It says for use with the 501X worlds or DB01 cars but not for use with 501X/original 501X. Is there a difference between the layshafts of the standard 501X and worlds 501X, I didn't think they had any diferences between the two except for the larger pulleys in this area! Can anyone confirm this? Does anyone here own both the regular and worlds 501X. Also I notice that there doesn't appear to be any other pulley in the kit for drive to the rear of the car, being that the standard car has both pulleys mounted to the keyed piece of aluminum it would seem that the car would require a seperate pulley to drive the rear wheels with this oneway unit in place. Has anyone obtained one of these units as of late?

I assume it comes with a metal 18t pulley - requiring a words car, db01 or original 501X with big pulley conversion. I also guess the 'other' pulley which isn't included (your own 18t pulley) mounts onto its own smaller mounting, which is pinned to the shaft leaving the oneway pulley to spin on its own.

I guess one of the larger aluminum looking spacers in the pic may be the keyed part for one of the pulleys for the rear, now that you mention it. It's hard to tell because you can't see any notches in either of them so they just look like spacers. Maybe it has a flange on one side which is the side facing us in the pic and thats why I can't see the notches! I guess it's a time will tell dilema, still wondering if this can be adjusted, it doesn't look like it can but if I recall the yokomo just uses some sort of cone washers to put tension on the pulley, no springs and such.

I purchased the center one-way last night on eBay. Should have it in a week or so, but my trial run/testing won't happen until mid-September.

Racing Factory should have two center one-way sets in stock. I bought mine few weeks ago.
http://www.racingfactory.fi/shop2/ca...ils.php?p=2333