Yokomo MR-4TC SD
#5717
Tech Adept
Thanks I'll try them out!
Originally posted by 2Tenths
I've found that, when the car is louder than normal, it usually means there is some binding in the drivetrain. You may want to take the motor out of gear and rotate the drivetrain very slowly by hand, feeling for any sticky spots. If you find one, take the center shaft out so you can tell whether the problem is in the front or rear diff case. Once you know, redo the shimming until the problem is fixed. Also, if you do not find a sticky spot, twist the diffs and try again. The diffs are not perfectly round, and so, in a certain position they may bind more than normal. This happened on my car, and I had to simply loosen the shimming.
I've found that, when the car is louder than normal, it usually means there is some binding in the drivetrain. You may want to take the motor out of gear and rotate the drivetrain very slowly by hand, feeling for any sticky spots. If you find one, take the center shaft out so you can tell whether the problem is in the front or rear diff case. Once you know, redo the shimming until the problem is fixed. Also, if you do not find a sticky spot, twist the diffs and try again. The diffs are not perfectly round, and so, in a certain position they may bind more than normal. This happened on my car, and I had to simply loosen the shimming.
#5718
ceramic bearing set...
What cermaic bearing set for the SD would you prefer? Yokomo, Acer, ??? .
Has anyone tried the ceramic diff balls from acer. 19.99$ is alot of money for 8 balls
Thanks,
IH
Has anyone tried the ceramic diff balls from acer. 19.99$ is alot of money for 8 balls
Thanks,
IH
#5719
Originally posted by Randman
H is just a hard material block, dont think the mold is different.
H is just a hard material block, dont think the mold is different.
#5720
It's good to see Yokomo responding to these design flaws - flaws which have been highlighted to CML by numerous people, myself included. These obvious problems have been apparent to many racers using the the first examples of the SD SSG available here in the UK.
Let's hope the revised parts have arrived in time - unfortunately the SD SSG has already earnt itself a poor reputation as a very fragile car that lives up to it's nickname - brokeomo. This is a real shame as the car, when it holds together, is extremely quick when correctly set-up.
Hopefully the driveshaft issues have been dealt with too - cos they weren't right either!
I have been running the new Graphite arms and I find them to be lasting much better than the old style plastic arms. Is the reason for this the new material? Or have the arm moulds been improved as well? You'd have thought that the Graphite arms would be less durable! Are the new graphite carriers mouldings thicker too?
On a more positive note, I recently attended a 1000 lap endurance race and My Yok SD was not only on the winning team - it didn't break a single part during the event!! It was the ONLY SD that didn't break during the meeting All the other SD drivers emptied my spares box though
Let's hope the revised parts have arrived in time - unfortunately the SD SSG has already earnt itself a poor reputation as a very fragile car that lives up to it's nickname - brokeomo. This is a real shame as the car, when it holds together, is extremely quick when correctly set-up.
Hopefully the driveshaft issues have been dealt with too - cos they weren't right either!
I have been running the new Graphite arms and I find them to be lasting much better than the old style plastic arms. Is the reason for this the new material? Or have the arm moulds been improved as well? You'd have thought that the Graphite arms would be less durable! Are the new graphite carriers mouldings thicker too?
On a more positive note, I recently attended a 1000 lap endurance race and My Yok SD was not only on the winning team - it didn't break a single part during the event!! It was the ONLY SD that didn't break during the meeting All the other SD drivers emptied my spares box though
#5721
Tech Regular
I've found a really simple solution on breaking diff screws I used this on my YZ. I went to the hobby shop and actually got some same size mm screws that were for Model R/C Airplanes. Haven't broken one since. And that would be in years. Remember cars aren't the only RC things that need screws.
#5722
What cermaic bearing set for the SD would you prefer? Yokomo, Acer, ??? .
#5723
R/C Tech Elite Member
iTrader: (47)
Re: ceramic bearing set...
Originally posted by IH
What cermaic bearing set for the SD would you prefer? Yokomo, Acer, ??? .
Has anyone tried the ceramic diff balls from acer. 19.99$ is alot of money for 8 balls
Thanks,
IH
What cermaic bearing set for the SD would you prefer? Yokomo, Acer, ??? .
Has anyone tried the ceramic diff balls from acer. 19.99$ is alot of money for 8 balls
Thanks,
IH
#5724
R/C Tech Elite Member
iTrader: (47)
Originally posted by sosidge
H is a different mould, as Matt described, with more material around where the driveshaft threads through. Material actually looks the same, but may be stronger as well. Newer SD's probably come with the H blocks as standard, I would guess it's a running change in the parts (modifying the old mould). G I haven't seen but since they are new out I would assume they are the H mould in Graphite.
H is a different mould, as Matt described, with more material around where the driveshaft threads through. Material actually looks the same, but may be stronger as well. Newer SD's probably come with the H blocks as standard, I would guess it's a running change in the parts (modifying the old mould). G I haven't seen but since they are new out I would assume they are the H mould in Graphite.
#5725
Originally posted by Horatio
Hopefully the driveshaft issues have been dealt with too - cos they weren't right either!
I
Hopefully the driveshaft issues have been dealt with too - cos they weren't right either!
I
Sleighty
#5727
Originally posted by Randman
I'll get some pics of my graphite C Hubs when I get my car back together, but they did have more material than the ones I pulled off when I broke..
I'll get some pics of my graphite C Hubs when I get my car back together, but they did have more material than the ones I pulled off when I broke..
#5728
Originally posted by Randman
What was wrong with the origional driveshafts?
What was wrong with the origional driveshafts?
It strikes me that you were fortunate enough never to have witnessed the 'shit-ness' first hand because you may not have had the same batch as the ones us Brits had to endure. Same goes for the c-hubs, steering arms etc.
#5729
R/C Tech Elite Member
iTrader: (47)
Originally posted by Horatio
So what you're saying is that the G versions appear to come from the same mould as the new H versions, just as sosidge speculated? This is very good news!!
So what you're saying is that the G versions appear to come from the same mould as the new H versions, just as sosidge speculated? This is very good news!!
#5730
Originally posted by Sleighty
If they have then i dont know about it!
Sleighty
If they have then i dont know about it!
Sleighty
In the meantime, remove the 'black crap' off the barrel that goes through the CVD end and open out the hole slighty with either a dremmel OR some fine wet n dry. If you're feeling clever you can also use some heat shrink to ensure the pin never comes out too - the grub screw has alot to do holding that shiny polished pin in place. Thread lock alone isn't enough - and I might add that any thread lock used has to be applied with surgical precision. If it gets onto the barrel, it will seize straight away. This can lead to the hubs, arms etc failing for no apparent reason.
BTW - I've witnessed first hand the friction welding thing that these shafts can do It's true.