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Yokomo MR-4 TC Thread

Yokomo MR-4 TC Thread

Old 01-29-2002, 04:25 PM
  #1111  
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Default common broken parts?

Since I just got a MR4TC, I don't have any spares yet. What are the most commonly broken parts? I assume suspension arms, but what else? How about belts? How do they hold up? I'm not doing much parking lot racing. Mostly carpet with some outdoor racing on a permanent track. I'm making a wide bumper out of ABS plastic for both the front and rear. I have them on all 3 of my TC3's and I haven't broken an arm since.
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Old 01-29-2002, 06:06 PM
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I think if you could carry...
A few rear belts, front and rear arms, front and rear driveshafts, Kingpins and hub carriers, Front bulkhead cap, Hinge pins, shock towers, plastic parts set for the shocks.
That would cover most emergencies.

Rcracer, Here's some pics.
Attached Thumbnails Yokomo MR-4 TC Thread-natsabove.jpg  

Last edited by Simon K; 01-29-2002 at 06:09 PM.
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Old 01-29-2002, 06:07 PM
  #1113  
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Another
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Old 01-29-2002, 06:08 PM
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Almost there..
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Old 01-29-2002, 06:10 PM
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Thats all..
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Old 01-29-2002, 06:24 PM
  #1116  
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Simon, what are those black driveshafts in the back.

Also, how much $$$ for Big Jim motors?
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Old 01-29-2002, 06:45 PM
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Kelvin didn't have any blue aluminium CVDs available as my ones had worn severely so I had to buy the steel CVDs instead.

Big Jim MVP was US$38, he does P2K, P2K2 and GM3's for US$50. http://bigjimracing.topcities.com/

Plenty more pics of the racing at www.rcracing.co.nz just go to the "Gallery" then click "Events"
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Old 01-30-2002, 12:22 AM
  #1118  
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Hi guys. Greetings from Malta.

Among the stuff I receive at the shop, almost daily, I yesterday received some interesting stuff from Orion, and some great samples from Titanium Racing.

ORION. Among the Orion stuff were some of their new tyres which are the control tyre for the forthcoming Euros. I tried some yesterday. They grip well. I'll have to see how well they wear.

Also in the parcel, anong the brushes, cells, and other exciting stuff, were a couple of their new Pro LCS timing devices. I tried that too yesterday evening at the track. It does everything the AMB does, without the need to carry tons of stuff. It gives you your time and laps in 5 minutes, individual lap times, fastest lap, average lap, etc. A great bit of kit.

TITANIUM RACING are manufacturers of high quality replacement parts for RC cars, all made in titanium. The samples they sent include out drives, stub axles, drive shafts, turnmuckles, ball joints, screws, and even titanium pinions. They are all beautifully made and worth every penny of the price quoted. And they are all so light you just wouldn't believe it. A drive shaft, complete with stub axle weighs about as much as a standard dogbone alone.Great stuff. I can't wait to receive my first order.

Stuff available for all on road and off road electric and IC cars.

SIMON. Great pics. Well done.

We race this Sunday. Will let you know reesults Monday.

Hey guys, by the way, how about Tosolini beating them all at the US Nats.

Regards

Joe from sunny Malta.
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Old 01-30-2002, 04:23 AM
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Thanks. I have the Penguin carbon chassis/shock towers, so hopefully I won't be needing shock towers. Apparently the bulkhead cap is a weak point on the car. I was asking around at the track yesterday, and everyone that has a Yokomo has broken one or two.
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Old 01-30-2002, 05:53 AM
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Johnbull,

Interesting new stuff you mentioned.

Do you know if Titanium Racing produces complete drive shafts for the MR4?
Where we race using Schumacher mini-pins the alloy drive shafts wear due to vibration caused by the min-pin tires. It's a problem that CML are aware of and they recommend using the steel shafts when using these tires.
If Someone is producing Ti replacements that would be good news.

Regards.

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Old 01-30-2002, 11:10 AM
  #1121  
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johnbull: What kind of screws does Titanium Racing make? I am looking for titanium button-head and flat head hex screws, in either 3mm or 4-40 sizes. If you find out what they make, let me know here...

One of the guys I race with got his heavy-duty Yokomo one-way in the car. It seems to increase the rotating mass by a bit, but on all but the highest levels of competition, it shouldn't be a big deal, and it's a lot sturdier. Kudos to Yokomo for coming up with a better design.
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Old 01-30-2002, 07:26 PM
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Shane, www.titaniumracing.com Looks like they don't make screws yet, according to their website,

I could not get the car to work on carpet with the front one-way. I had pink in the front and orange in the rear, but I think it is the tires. Another guy here has his one-way working awesome, and he has yoke 238G's, firm inserts front and medium rear. Yellow springs front and orange rear. Apparently that is what BBaker and Tosolini were using when they ran that setup at the carpet nats last year.

I will give the front one-way another try when I get my carbon fiber top deck, in about a week. I have a feeling I will be running heavier oils with the increased stiffness

Anyone have carpet setups for the yoke with one-ways? I am running just the center again now. Was interesting to see Tosolini go so soft, and actually promote flex!

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Old 01-31-2002, 12:07 AM
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Hi guys. Greetings from Malta.

Futureal, Yorkie, Titanium Racing are making some beautiful stuff. I have their latest catalogue with prices and am surprised to see that their prices for, say a pair of MR4 drive shafts, are no more than a set of alloy ones from Yoke.

Speedo has already given their web address, but to answer Futureal, yes they do make screws. They pack in sets for most cars, on and off road, and also sell in packs of 10, countersunk and button head.

I gave them a big order for stuff yesterday including lots of diff outdrives, CVDs drive shafts, turnbuckles, layshafts (for MR4 and TC3) screws galore, shock shafts. They will make almost anything, in fact I have already asked them to make some specialised stuff for me. The boss is Darren White.

Incidentally they also make Titanium Chassis for IC cars, and I tell you their quality and finish is superb.

I certainly recommend them.

I'm getting the hang of my Orion Pro LCS timer. it's great, especially when it rings three buzzes to tell you you have just done fastest lap. I like that bit best!

Regards

Joe from sunny Malta.
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Old 01-31-2002, 12:59 AM
  #1124  
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Hi to all,
just to let you guys know that i got my hands on a mr4tc special RS version. Browsing thru all the packaging, here are the differences as far as i can see:

1. plastic shocks
2. plastic center pulley (no one way)
3. bushings for bellcrank
4. steel universals f/r
5. steel turnbuckles
6. belt does not look like the low friction type (the teeth does not have any brown coating)
7. tires (not sure which type) with sponge inserts
8. plastic wheel adapters
9. the posts for the bellcranks looks like the normal aluminium type (not blue lightweight)
10. silver springs

the front one-way is inside, not sure if it is the new hardened type (how can I tell if it is? is the bearing bigger?)

anyone else who have this kit noted any more differences?

hope to get it up and running this weekend and do a personal evaluation compared to my totally stock xxxs.
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Old 01-31-2002, 03:52 AM
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Johnbull,

Just received a nice email from Titianium Racing and I have put them in touch wiht my local hobby shop. I'd like to see the Ti CVDs and see how they hold up. Should be fine seeing that Ti is harder and lighter than steel.

I see your interested in F1?
Schumacher seems to be having fun in testing. Crashing out at 140 mph. Renault and Toyota should spice things up in the lower ranks this year?

Regards

Yorkie
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