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R/C Tech Forums Thread Wiki: Yokomo YZ-2
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Old 11-03-2015, 06:59 AM   #1621
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What's the difference between those gearboxes? I have the original one on my NIB kit I just got but the other assembled roller it has the B-Max Tranny and I can't tell the difference between them.
Besides the motor being pushed to the rear A LOT, it also changes rear roll center since the weight is also higher than the originial transmission.
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Old 11-03-2015, 08:05 AM   #1622
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[QUOTE=WillS;14249764]
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Actually I did not lose steering, I gained side bite and rear traction but lost very little steering that it had before.
In order to gain something you have to lose something. I lost a lot of initial turn in steering at 180 turns for example. It did increase rear traction and side bite. The car was able to be pushed harder through other parts of the track. But it's all relative to conditions, and setup. We get the best of both worlds with the tranny options.
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Old 11-03-2015, 10:23 AM   #1623
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How much better than the bmax2 on dirt is the y-max conversion?

Just wondering, especially if my chassis was drilled wrong, whether to keep the Yz for carpet and just keep running the bmax on dirt!?
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Old 11-03-2015, 10:28 AM   #1624
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If he was that far off, it might cause a tweak issue with the chassis.
Is my best bet to initially screw all the screws in part way and see how easily it all tightens down? Presumably the tweak will occur if it is offline and twisting as I screw it all down?

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Old 11-03-2015, 04:40 PM   #1625
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Do you guys find the car has lots of steering I used to race buggies years ago and went to on road for many years after that and came back off road last year...Finding the car is good happy what I am doing to the car but just can't get the car to rotate in the corners as fast as I would like.I am wondering if it's down to the onroad driving as don't drive with the brakes like the others do.
Can someone suggest what they would change on the car to go to a locked in rear to get one looser...,,Astro and carpet running on same tyres as everyone else...

Thanks
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Old 11-03-2015, 11:29 PM   #1626
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Is my best bet to initially screw all the screws in part way and see how easily it all tightens down? Presumably the tweak will occur if it is offline and twisting as I screw it all down?
try running without bolting down the waterfall!

I initially ran it with a shim glued to chassis only, couldn't tell the difference to be honest now that I have mine screwed in now.
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Old 11-04-2015, 07:28 PM   #1627
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Do you guys find the car has lots of steering I used to race buggies years ago and went to on road for many years after that and came back off road last year...Finding the car is good happy what I am doing to the car but just can't get the car to rotate in the corners as fast as I would like.I am wondering if it's down to the onroad driving as don't drive with the brakes like the others do.
Can someone suggest what they would change on the car to go to a locked in rear to get one looser...,,Astro and carpet running on same tyres as everyone else...

Thanks
Rear shocks front mounted.

No extra weight in the rear.

Put some weight up front.

Lengthen wheelbase.

Remove as much ackerman as possible.

Less rear toe in maybe 2.5.

1 degree or maybe slightly more front toe out..

Many things you can try but I'd do one at a time.

This car has more steering than any other 1/10th buggy I've ran so it can get to where you want it, just need to mess with the chassis settings a bit.
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Old 11-04-2015, 10:00 PM   #1628
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IDK Antimullet,

I've only drive my YZ-2 inside for a quick steering adjustment but I can say that my 4.2 definitively turns tighter. Will have to see out on track but initial comparison suggests it won't turn as tightly as a 4.2, but it's close.
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Old 11-04-2015, 10:07 PM   #1629
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IDK Antimullet,

I've only drive my YZ-2 inside for a quick steering adjustment but I can say that my 4.2 definitively turns tighter. Will have to see out on track but initial comparison suggests it won't turn as tightly as a 4.2, but it's close.
dumb question, but do you have the servo setup correctly on your yz-2?

I've noticed this car can be quite finicky when it comes to setting up the servo. I can't quite get 100% throw on one side, even with my steering epa maxed at 150. Doesnt matter if the servo is dead center, or one notch off center!!

still playing around with servo spacing, steering link length etc. but it's not bad, just not ideal. Still corners better than my B4.2 however, which I ran just a couple of days ago again
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Old 11-04-2015, 10:43 PM   #1630
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As far as I can tell, I have equal steering to both sides and am using a slightly longer horn to ensure full throw.

My DEX410, SB401, Daughters RB5, all steer similarly tight, about the same as the YZ-2. My PRS1 will turn tightly at very low speed but at medium to high rates of speed it can push but I compensate with a touch of throttle steer.
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Old 11-05-2015, 06:33 PM   #1631
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anyone remember the dude who made ymaxx cf battery plate/strap that was same shape as the stock ?
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Old 11-05-2015, 07:04 PM   #1632
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Quote:
Originally Posted by hacker View Post
dumb question, but do you have the servo setup correctly on your yz-2?

I've noticed this car can be quite finicky when it comes to setting up the servo. I can't quite get 100% throw on one side, even with my steering epa maxed at 150. Doesnt matter if the servo is dead center, or one notch off center!!

still playing around with servo spacing, steering link length etc. but it's not bad, just not ideal. Still corners better than my B4.2 however, which I ran just a couple of days ago again
Hey hacker, yea I get the same mate. I fiddled and fiddled and fiddled.
I run a BLS551 and I have the allow servo mounts. but yea pain in the to get it set up right.

Some guys up here in Sydney put a 1mm spacer in between the cups to get the servo centred and go from there. But I noticed Lee Martin doesn't
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Old 11-05-2015, 08:24 PM   #1633
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To even your steering throw: put a 2mm or 3mm washer in the short linkage between the servo horn and the bellcrank.
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Old 11-05-2015, 10:34 PM   #1634
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IDK Antimullet,

I've only drive my YZ-2 inside for a quick steering adjustment but I can say that my 4.2 definitively turns tighter. Will have to see out on track but initial comparison suggests it won't turn as tightly as a 4.2, but it's close.
Run your front axles in the high position for more steering as well.

I think you'll like it once you get it on the track and set up well!
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Old 11-06-2015, 01:19 AM   #1635
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Guys, with the y-max running battery rear it is raised due to the chassis plates slanting upwards on the sides... Is it an issue with c of g? Also, thinking maybe I need to use plenty of foam to protect the cells there, it must be easy to split a lipo case?!
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