Yokomo MR-4TC SD

Reply

Old 05-19-2003, 03:18 AM
  #1381  
Tech Master
 
johnbull's Avatar
 
Join Date: Aug 2001
Location: Malta. G.C.
Posts: 1,762
Default

Hi guys. Greetings from Malta.

KENNETH TAN.

Quite right. I would have thought that the SD would be a light car but in fact it is much heavier than the BD car.

My SD has the Special alluminium battery hold down, and an aluminium motor heat sink extra. However I have alloy drive shafts as opposed to steel, and titanium screws all round, and still it weighs 1520 grams with a very thinly sprayed bodyshell.

The BD Special needs some 40 grams of lead to bring it up to the mandatory 1500 gram weight limit.

I don't know where to start making the BD lighter. Well I do actually. That centre shaft alone is stupidly heavy. I must try modifying a carbon TC3 unit till Yoke can supply theirs.

regards

Joe from sunny Malta.
johnbull is offline  
Reply With Quote
Old 05-19-2003, 03:18 AM
  #1382  
Tech Elite
 
sosidge's Avatar
 
Join Date: Dec 2001
Location: Bristol, UK
Posts: 3,900
Default

Originally posted by CSF0623
Matt Howard: Are you folks up north having any problems w/ the shocks leaking oil?
I'm getting a little oil around the bottom of the shock shafts, but I'm not getting any squeaks in the shock. It could be the oil that I coated the o-ring with in the first place when assembling the shock.
sosidge is offline  
Reply With Quote
Old 05-19-2003, 03:34 AM
  #1383  
Tech Adept
 
Join Date: Sep 2001
Location: Europe
Posts: 177
Default

johnbull

How much lighter is the sd with the titanium screws?
moonman is offline  
Reply With Quote
Old 05-19-2003, 03:44 AM
  #1384  
Tech Master
iTrader: (1)
 
Kenneth Tan's Avatar
 
Join Date: Aug 2001
Location: Singapore
Posts: 1,123
Trader Rating: 1 (100%+)
Default

Originally posted by johnbull

I don't know where to start making the BD lighter. Well I do actually. That centre shaft alone is stupidly heavy. I must try modifying a carbon TC3 unit till Yoke can supply theirs.
Yeah. That shaft is impossibly heavy.
Kenneth Tan is offline  
Reply With Quote
Old 05-19-2003, 07:18 AM
  #1385  
Tech Fanatic
 
Join Date: Aug 2001
Location: Washington state
Posts: 962
Default

Heavy? Out of the box, with motor, electronics and body it was .6 ounce over ROAR minimum. Titanium screws saved an ounce.
coolrcdad is offline  
Reply With Quote
Old 05-19-2003, 09:04 AM
  #1386  
Tech Prophet
iTrader: (47)
 
Randy Caster's Avatar
 
Join Date: Mar 2003
Location: Costa Mesa, CA
Posts: 16,702
Trader Rating: 47 (100%+)
Default

Does anyone have a clue when Yokomo is going to release the aluminum pivot blocks, and possibly some graphite suspension parts? I was thinking of getting the Barracuda which I hear is extremely strong, just hoping I did make the right choice.
I am hearing how free the drivetrain is on this car, but thinking of getting ceramic bearings still, does anyone think there is a need for them?
Randy Caster is offline  
Reply With Quote
Old 05-19-2003, 09:38 AM
  #1387  
Tech Regular
iTrader: (2)
 
Join Date: Oct 2001
Location: Paris - France
Posts: 399
Trader Rating: 2 (100%+)
Default

Randman,

I heard that the graphite suspension parts will be available end of May.

I asked myself if I should buy the ceramic bearings but they are way too expensive 129.99 for the SD, I think I 'll stick with regular bearings and clean them regularly.

A friend of mine has bought ceramic bearings for his TRF 414 and he regrets because they are not better overally speaking, they are just lighter...

I would buy some spare parts instead of ceramic bearings, think about aluminum dogbones and option parts to come...

Last edited by Ralf; 05-19-2003 at 10:12 AM.
Ralf is offline  
Reply With Quote
Old 05-19-2003, 10:03 AM
  #1388  
Tech Champion
iTrader: (8)
 
rc-zombies's Avatar
 
Join Date: Aug 2001
Location: NorCal. Napa area
Posts: 7,212
Trader Rating: 8 (100%+)
Default

Randman:

I was able to get a full set of Teflon sealed bearings for $26.00 shipped. it's a comprimise between the stock and the Acer bearings. $130.00 for bearings is way too much...I think on the track you won't be able to tell the difference between expensive and cheap bearings...
rc-zombies is offline  
Reply With Quote
Old 05-19-2003, 10:38 AM
  #1389  
Tech Fanatic
iTrader: (12)
 
CSF0623's Avatar
 
Join Date: Aug 2002
Location: Los Angeles, Ca
Posts: 869
Trader Rating: 12 (100%+)
Default

Originally posted by sosidge
I'm getting a little oil around the bottom of the shock shafts, but I'm not getting any squeaks in the shock. It could be the oil that I coated the o-ring with in the first place when assembling the shock.
Thanx Sosidge! I'm getting the same towards the bottom.
CSF0623 is offline  
Reply With Quote
Old 05-19-2003, 10:42 AM
  #1390  
Tech Champion
iTrader: (6)
 
Matt Howard's Avatar
 
Join Date: Aug 2001
Location: Abilene TX
Posts: 5,952
Trader Rating: 6 (100%+)
Default

csf0623- I was getting a little oil by the top cap but by the second or third run it stopped and the shock still felt fine. The only thing I can figure is that I built the shock with too much oil and it forced it's way out because I still can't feel any air in the shock.
Matt Howard is offline  
Reply With Quote
Old 05-19-2003, 10:47 AM
  #1391  
Regional Moderator
iTrader: (8)
 
Darkseid's Avatar
 
Join Date: Aug 2001
Location: At my computer, duh...
Posts: 9,033
Trader Rating: 8 (100%+)
Default

It amazes me to see people worry so much over bearings. The kits bearings are very good. I got to see a fellow board member's car yesterday(CIVIC91) and he could spin the tires and his drive train would spin for what seemed like forever, much longer than his 'Cuda. All he did to them was clean them out with a ultrasonic jewelery cleaner, then re-lube them with light bearing fluids. Thats it!

My car spun for half as long as his, and I haven't even cleaned the original fluid out of the bearings yet(although, after seeing his car, I'll be doing that today ).

I would think that there has to be more cost effective stuff to buy, than a $130 set of ceramic bearings.
Darkseid is offline  
Reply With Quote
Old 05-19-2003, 10:49 AM
  #1392  
Tech Champion
iTrader: (8)
 
rc-zombies's Avatar
 
Join Date: Aug 2001
Location: NorCal. Napa area
Posts: 7,212
Trader Rating: 8 (100%+)
Default

Matt/Mo..

Can we get your setups from the Norrca race?
And David Goss's setup too if possible..
rc-zombies is offline  
Reply With Quote
Old 05-19-2003, 10:54 AM
  #1393  
Tech Fanatic
iTrader: (12)
 
CSF0623's Avatar
 
Join Date: Aug 2002
Location: Los Angeles, Ca
Posts: 869
Trader Rating: 12 (100%+)
Default

Originally posted by Matt Howard
csf0623- I was getting a little oil by the top cap but by the second or third run it stopped and the shock still felt fine. The only thing I can figure is that I built the shock with too much oil and it forced it's way out because I still can't feel any air in the shock.
Thanx for the input Matt.
CSF0623 is offline  
Reply With Quote
Old 05-19-2003, 11:28 AM
  #1394  
mo
Tech Master
iTrader: (7)
 
mo's Avatar
 
Join Date: Aug 2001
Location: Sacramento, CA
Posts: 1,362
Trader Rating: 7 (100%+)
Default

I should have Matt and Davids setups on my website tonight sometime. I was too tired and sunburnt to do them last night. Especially after my crappy weekend, in sedan. First heat, car stopped on the straight, didn't know why. Second heat, broken caster block on lap 2 after bouncing off a car that crashed in front of me, into the boards. Third heat, car stopped again, found out it was my ESC overheating (GM SX9). Forth heat, car was extremely loose and pulled it off so I didn't break anything else. I hope the Reed Race doesn't go like this.
mo is offline  
Reply With Quote
Old 05-19-2003, 11:34 AM
  #1395  
Tech Fanatic
iTrader: (3)
 
utieh's Avatar
 
Join Date: Dec 2002
Location: paris
Posts: 941
Trader Rating: 3 (100%+)
Default graphite parts

I noticed that the servo horn was made of carbon plastic, it looks pretty stiff and rigid .
will the future carbon parts will be made with the same material?
will they have a different design? the shock screw holes are placed at their weakest point.
utieh is offline  
Reply With Quote

Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service