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R/C Tech Forums Thread Wiki: Yokomo YZ-2
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Old 02-06-2015, 08:57 AM   #436
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Default Set up

http://www.petitrc.com/setup/yokomo/...sCity20150131/
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Old 02-06-2015, 09:57 AM   #437
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Joe.........thanks for the help via pm in regards to the Yokomo product line....your car looks good!
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Old 02-06-2015, 11:21 AM   #438
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Originally Posted by joehundy View Post
Joe,

Can you suggest other springs than the XGears? Also, can you post pictures of exactly where you placed the weights?
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Old 02-07-2015, 08:09 AM   #439
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And as for springs I only have xgear's ...they are the same as kyosho
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Old 02-07-2015, 03:09 PM   #440
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So 50g total under the tranny?
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Old 02-07-2015, 06:11 PM   #441
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So 50g total under the tranny?


25
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Old 02-07-2015, 08:13 PM   #442
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Jake, his picture cleared up my confusion. Joe is saying he used 25g total under the trans and it was two 10g pieces right up against the RF holder and one 5g piece on top of those. It appears he is using the JConcepts weights which come in 5 and 10g pieces. I use the Losi which are 7g each.
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Old 02-07-2015, 11:04 PM   #443
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Pretty Impressed with the car. Had a rough night qualifying with my RB6 and decided to practice with the YZ-2 and it was awesome. A little track info. Tight indoor clay fresh build usually not high bite for 1-2 weeks so we run SS tires until it starts to groove.

So I ran it our main and was 7th on the grid. Halfway through the race got into first and had fast lap of the race which was .8 faster than the RB6 in the 3 quals. Ended 3rd when I went stupid into the face of the jump but was very happy and always had catch up ability because it was so smooth and easy to drive.

The only changes I did from the kit build was flat 1.6 pistons 35,30 oil and 3.5 toe and middle hole on the rear tower.

Reedy shorty battery, Orion motor/ESC, Sanwa servo I weigh in at 1530 ish.
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Old 02-08-2015, 12:46 AM   #444
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After 3 days on testing and changing a bunch of things this is the set up I feel gave me the best results and should be able to be duplicated for others and other tracks. I tested different pistons, oil, and springs. Kyosho springs seem to be the go to spring so I ran it with good results. Both whites front and rear and golds. For tacky moist tracks the golds are the ticket. When it's sorta wet but starting to dry out the whites are the way to go. My personal belief on these springs is no matter how good they are they aren't worth $20 a pair. With that in mind I am a racers racer and I wanted to offer a setup that many could run and have no problems getting the items used.

I then switched to the AE springs which after talking with a few very trustworthy local racers we figured that maybe gray might be close to the Kyosho golds. The car was pretty good on the grays and the car jumped pretty well with a stiffer spring. One issue I had with these springs is that when the bite came up the car got twitcy and was a little harder to control if you needed to push the pace. I then switched to whites all around and boy did the car really feel planted to the track. I could put it anywhere on the track and it was stuck. Perfect amount of steering and it jumped pretty good as well. (stiffer springs felt like it jumped just a hair better) I experienced one issue that a couple of others have experienced and that's the eclipe popping off inside the shock. It's a tighter fit than on the Bmax shocks. Keep a close eye on how you snap them into place. Having extras won't hurt.

A variety of pistons and oils were also tried yet I feel that the 1.6's were the more consistent feeling IMO Feel free to try the setup out and I welcome your thoughts on it. Hope to have it on Petit soon
Attached Files
File Type: pdf YZ-2 LSR SETUP.pdf (415.3 KB, 125 views)
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Old 02-08-2015, 05:22 AM   #445
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You forgot your shock mounting positions on the arms, otherwise looks good!
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Old 02-08-2015, 10:11 AM   #446
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Quote:
Originally Posted by pumpkinfish View Post
You forgot your shock mounting positions on the arms, otherwise looks good!
Setup corrected. Thanks for pointing that out.
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Last edited by STLNLST; 02-08-2015 at 10:28 AM. Reason: I made a boo boo......lol
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Old 02-08-2015, 04:13 PM   #447
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I'm a newbie here but started building RC cars when the RC10 was the hot new buggy.

I got back into it late last year, some sort of mid-life crisis I suppose, and when the YZ-2 was announced, I jumped at the chance to be one of the cool kids with the latest hotness.

Anyway... great kit, smooth build other than having to clearance the front bulkhead to get full right steering lock. I haven't seen anyone else mention that issue.

Well today was the first day I took it to a track, and when i got there I noticed the drivetrain/motor was weirdly loud. I ran the car some in my house and don't recall hearing anything like the noise it made today. I recorded a quick video of it if anyone wants to give their 2 cents worth.

youtu.be/ifk2Yrhtbug (just put the http etc, in front)

Sorry in advance for bending the rules a bit with that link.

Thanks,

Tim
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Old 02-08-2015, 06:56 PM   #448
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That gear mesh is horribly tight. That spur gear is trashed. Pull the pinion off the motor and make sure the driveline spins freely without any binding.
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Old 02-08-2015, 07:30 PM   #449
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Quote:
Originally Posted by Nottom View Post
I'm a newbie here but started building RC cars when the RC10 was the hot new buggy.

I got back into it late last year, some sort of mid-life crisis I suppose, and when the YZ-2 was announced, I jumped at the chance to be one of the cool kids with the latest hotness.

Anyway... great kit, smooth build other than having to clearance the front bulkhead to get full right steering lock. I haven't seen anyone else mention that issue.

Well today was the first day I took it to a track, and when i got there I noticed the drivetrain/motor was weirdly loud. I ran the car some in my house and don't recall hearing anything like the noise it made today. I recorded a quick video of it if anyone wants to give their 2 cents worth.

youtu.be/ifk2Yrhtbug (just put the http etc, in front)

Sorry in advance for bending the rules a bit with that link.

Thanks,

Tim
The kit comes with a tall and a short servo arm. Which one do you have on?
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Old 02-08-2015, 07:34 PM   #450
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Quote:
Originally Posted by Socket View Post
That gear mesh is horribly tight. That spur gear is trashed. Pull the pinion off the motor and make sure the driveline spins freely without any binding.
Thanks for the reply.

I can understand why you might think that, but it's a brand new pinion gear I put on 5 minutes before I made the video, and the spur looks brand new but has just been run around the house a bit. It was probably a little tight, but loosening it makes no meaningful difference. When I swapped pinions I spun the spur and it's very smooth.

I'm concerned more with the motor. It seems to have an odd sound when I run it off the car, but I don't know what normal sounds like.

I also think the gearbox needs to be lubed. I followed the instructions to the letter and it doesn't say anything about lubing the idler gears, so against my better judgement I didn't lube them.

I think I need to start there.
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