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R/C Tech Forums Thread Wiki: Yokomo YZ-2
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Old 06-02-2016, 12:14 PM   #2251
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Ive got the old yz2 4 gear that i race in 17.5 on high bite clay. I havnt raced in a year. I loved the car but wanted just a little more forward bite. Will the 3 gear give me that extra forward bite?

I drove my buddies dt tonight. Had great grip but didnt quite have the corner speed im used to.
The physics suggests, yes, you would get more forward momentum, however if its the wheels spinning thats causing poor forward bite, it wont help. The trouble is that it will be such a small difference it would be hard to detect especially run 17.5.
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Old 06-02-2016, 12:31 PM   #2252
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Ive got the old yz2 4 gear that i race in 17.5 on high bite clay. I havnt raced in a year. I loved the car but wanted just a little more forward bite. Will the 3 gear give me that extra forward bite?

I drove my buddies dt tonight. Had great grip but didnt quite have the corner speed im used to.
It can help. The trick on the "old" car is to run softer rear springs to allow the weight to transfer while you get on the gas. Too often I see cars that don't move at all. I was running as low as a 1.8 lb spring in the rear.

High bite clay is also where I race, so take a look at my latest Yz2 3 gear setup.
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Old 06-02-2016, 08:06 PM   #2253
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Randy - what is your front spring rate and weight oil you are using front and rear? Thx
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It can help. The trick on the "old" car is to run softer rear springs to allow the weight to transfer while you get on the gas. Too often I see cars that don't move at all. I was running as low as a 1.8 lb spring in the rear.

High bite clay is also where I race, so take a look at my latest Yz2 3 gear setup.
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Old 06-03-2016, 12:15 AM   #2254
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If you buy the 3 gear DT version car, yes! If you buy the 3 gear CA car, no, I guess it will be even worse than the old 4 gear car then.
If the grip is there, the corner speed can be dialed in.

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Will the 3 gear give me that extra forward bite?

I drove my buddies dt tonight. Had great grip but didnt quite have the corner speed im used to.
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Old 06-03-2016, 12:29 AM   #2255
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MM3 – Mid Motor, 3-Gear
This was the first orientation for most early Mid Motor conversions. It is still suitable for cars running on a high grip surface eg. artificial turf and carpet style tracks.

The rotation of the motor is in the opposite direction to the rotation of the wheels. The torque of the motor is in opposition to the rotation of the motor and is ‘aimed’ in front of the motor. This causes the rear end to squat very little under acceleration and provides very little mechanical grip unless there is already sufficient grip from the tyres. Thus forward traction is not as high as MM4. The car’s weight distribution is also more biased towards the front than in RM configurations. The car will also tend to jump with a more level attitude than in RM configurations.
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Old 06-03-2016, 04:29 PM   #2256
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Apologies if this has been asked before...

I just ordered the DT to run at my local track, SDRC. A lot of people seem to be doing the lay down transmissions in the B5 and Losi 3.0. Can the CA lay down transmission be installed in the DT? If so, what parts are needed?

Thanks!
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Old 06-03-2016, 08:31 PM   #2257
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MM3 Ė Mid Motor, 3-Gear
This was the first orientation for most early Mid Motor conversions. It is still suitable for cars running on a high grip surface eg. artificial turf and carpet style tracks.

The rotation of the motor is in the opposite direction to the rotation of the wheels. The torque of the motor is in opposition to the rotation of the motor and is Ďaimedí in front of the motor. This causes the rear end to squat very little under acceleration and provides very little mechanical grip unless there is already sufficient grip from the tyres. Thus forward traction is not as high as MM4. The carís weight distribution is also more biased towards the front than in RM configurations. The car will also tend to jump with a more level attitude than in RM configurations.

That is correct. Four gear will always have more grip than three. The weight transfer is to the rear with four gear on power
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Old 06-08-2016, 04:22 AM   #2258
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I've just bought a used original YZ-2 and I've been searching the thread for setup info. I'm already planning to get a ball diff to run on clay and the machined shock pistons. Anything else to consider? What gearing are people going with for 17.5t Is the Exotek direct spur mount a good upgrade for 17.5t? Thanks.
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Old 06-08-2016, 10:13 AM   #2259
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Quote:
Originally Posted by JAE View Post
Randy - what is your front spring rate and weight oil you are using front and rear? Thx
Check it out.
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Yokomo YZ-2-randy-pike-yz2-3-gear-track-time-hobies-setup.jpg  
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Old 06-08-2016, 10:15 AM   #2260
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Quote:
Originally Posted by rbk1115 View Post
Apologies if this has been asked before...

I just ordered the DT to run at my local track, SDRC. A lot of people seem to be doing the lay down transmissions in the B5 and Losi 3.0. Can the CA lay down transmission be installed in the DT? If so, what parts are needed?

Thanks!
IT should be able to, yes. You'll need the trans, idler, shock tower, and shock tower spacer I believe.
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Old 06-08-2016, 10:17 AM   #2261
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Quote:
Originally Posted by HYPA View Post
I've just bought a used original YZ-2 and I've been searching the thread for setup info. I'm already planning to get a ball diff to run on clay and the machined shock pistons. Anything else to consider? What gearing are people going with for 17.5t Is the Exotek direct spur mount a good upgrade for 17.5t? Thanks.
I'd suggest a few sets of the Yatabe springs to be ready to adjust to your track conditions.

I run the Factory RC Avid/Sheele slipper eliminator on mine and it works well in 17.5 no issue.
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Old 06-08-2016, 05:17 PM   #2262
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Originally Posted by Randy_Pike View Post
I'd suggest a few sets of the Yatabe springs to be ready to adjust to your track conditions.

I run the Factory RC Avid/Sheele slipper eliminator on mine and it works well in 17.5 no issue.
Thanks! I was looking at the Kyosho springs but damn they're expensive. Anyone know what Yokomo spring is similar to the Kyosho white?
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Old 06-08-2016, 07:10 PM   #2263
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I believe it is Orange.
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Old 06-08-2016, 07:32 PM   #2264
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Kraig is correct
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Old 06-08-2016, 10:13 PM   #2265
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I believe it is Orange.
Thanks. Is there any reason why I should go for the Kyosho over the Yok/AE springs? Are they worth the cost?
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