172LikesKyosho Ultima RB6 & RB6.6 Car Thread
12-21-2016, 08:46 AM - Wikipost
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10-07-2016, 09:33 PM
Has anyone successfully installed the new RB6.6 lay down 3 gear transmission on a RB6 chassis?
The reason I ask is I am thinking of converting my RB6 to the 3 gear lay down transmission. I have already modified the chassis and side guards to fit the batter sideways. I want to buy all the RB6.6 parts necessary except the new RB6.6 chassis. I believe I would have to drill the two holes in my RB6 chassis to mount the front portion of the 3 gear lay down transmission. This is the part that concerns me, I could see where it could be difficult to drill the holes in the right spot on the RB6 chassis so the transmission case lines up correctly.
Any thoughts?
The reason I ask is I am thinking of converting my RB6 to the 3 gear lay down transmission. I have already modified the chassis and side guards to fit the batter sideways. I want to buy all the RB6.6 parts necessary except the new RB6.6 chassis. I believe I would have to drill the two holes in my RB6 chassis to mount the front portion of the 3 gear lay down transmission. This is the part that concerns me, I could see where it could be difficult to drill the holes in the right spot on the RB6 chassis so the transmission case lines up correctly.
Any thoughts?
10-07-2016, 11:33 PM
Diff longevity & tips
Looking to build a spare diff to have one ready at the track. Running stock with a slipper eliminator.
What is the longevity of these diff's?
Also, would the diff benefit from any aftermarket parts such as a caged ceramic thrust bearing or different balls? Anything you need to do differently or quirks with these diffs? Thx much. Love this buggy
What is the longevity of these diff's?
Also, would the diff benefit from any aftermarket parts such as a caged ceramic thrust bearing or different balls? Anything you need to do differently or quirks with these diffs? Thx much. Love this buggy
10-08-2016, 12:03 AM
Looking to build a spare diff to have one ready at the track. Running stock with a slipper eliminator.
What is the longevity of these diff's?
Also, would the diff benefit from any aftermarket parts such as a caged ceramic thrust bearing or different balls? Anything you need to do differently or quirks with these diffs? Thx much. Love this buggy
What is the longevity of these diff's?
Also, would the diff benefit from any aftermarket parts such as a caged ceramic thrust bearing or different balls? Anything you need to do differently or quirks with these diffs? Thx much. Love this buggy
10-08-2016, 05:38 AM
Tech Adept
Has anyone successfully installed the new RB6.6 lay down 3 gear transmission on a RB6 chassis?
The reason I ask is I am thinking of converting my RB6 to the 3 gear lay down transmission. I have already modified the chassis and side guards to fit the batter sideways. I want to buy all the RB6.6 parts necessary except the new RB6.6 chassis. I believe I would have to drill the two holes in my RB6 chassis to mount the front portion of the 3 gear lay down transmission. This is the part that concerns me, I could see where it could be difficult to drill the holes in the right spot on the RB6 chassis so the transmission case lines up correctly.
Any thoughts?
The reason I ask is I am thinking of converting my RB6 to the 3 gear lay down transmission. I have already modified the chassis and side guards to fit the batter sideways. I want to buy all the RB6.6 parts necessary except the new RB6.6 chassis. I believe I would have to drill the two holes in my RB6 chassis to mount the front portion of the 3 gear lay down transmission. This is the part that concerns me, I could see where it could be difficult to drill the holes in the right spot on the RB6 chassis so the transmission case lines up correctly.
Any thoughts?
BTW, I spent an hour trying to figure out why the original long screw through the transmission to the motor plate wasn't long enough. Turns out, you get a new longer screw with the kit
Don't overlook that like I did.
10-08-2016, 10:07 AM
heyscottn, Thanks for the great info!
I just thought of a possible remaining issue. What holes in the chassis does the plastic water fall mount (UM723) use once the lay down trans is installed? The reason I ask is because my side ways battery butts up against the waterfall. I already grinded my chassis and side guards. If the waterfall is positioned further forward on the chassis I may have to grind some more off the chassis because the battery will now sit further forward.
Also am I correct that I really don't need the RB6.6 battery mount (UM733) because when the battery is mounted sideways there is no need for the plastic stopper?
Thanks
I just thought of a possible remaining issue. What holes in the chassis does the plastic water fall mount (UM723) use once the lay down trans is installed? The reason I ask is because my side ways battery butts up against the waterfall. I already grinded my chassis and side guards. If the waterfall is positioned further forward on the chassis I may have to grind some more off the chassis because the battery will now sit further forward.
Also am I correct that I really don't need the RB6.6 battery mount (UM733) because when the battery is mounted sideways there is no need for the plastic stopper?
Thanks
10-09-2016, 10:09 AM
Tech Regular
At the end I just bought the new RB6.6 kit. I was thinking to got the B6 instead I've choose to go with Kyosho.
I hope I've done the right choice. :-)
I hope I've done the right choice. :-)
10-09-2016, 02:05 PM
@lynx: I love my RB6.6, best 2WD buggy I've driven so far. I think you will too! Please let us know if we can help you get dialed.
10-09-2016, 04:18 PM
Tech Adept
Payton34 - I don't think the waterfall location changed, same screw holes. I moved my battery further forward past where the chassis was ground down (by a previous owner, I don't have the tools). So I used spacers under the waterfall and battery mounts. Same old battery strap.
10-09-2016, 04:23 PM
Has anyone weighed their ceramic bearing kits vs the stock bearing kits? What is the weight difference? Thanks!
10-09-2016, 05:06 PM
anyone tried this car with the sway bars. a friend of mine with a different car ran both front and rear sway bars this last race day. I haven't tried them yet but i have a set on the way. curious if anyone else tried the sways?
10-09-2016, 07:09 PM
Hey guys I'm running a 17.5 Blinky in my rb6 and I'm geared 76/30 but the motor is too hot for me even after a few laps (med outdoor clay med bite) I have a 69 and 72 spur and a 32 pinion in my parts box which combo would run the coolest? I'm not poking for speed just want my temps down, thanks.
10-09-2016, 10:04 PM
Hey guys I'm running a 17.5 Blinky in my rb6 and I'm geared 76/30 but the motor is too hot for me even after a few laps (med outdoor clay med bite) I have a 69 and 72 spur and a 32 pinion in my parts box which combo would run the coolest? I'm not poking for speed just want my temps down, thanks.
Secondly how old is the motor? Take it out remove the pinion and try turning the rotor and make sure there are no binds there. If all is good there I would consider trying a 69T spur and maybe a 29t pinion for starters and see how the car feels and check the temps.
I run 69/30 in stock with motor temps around 120~130 after a main.
10-09-2016, 10:35 PM
The motor has had about 10 packs through it, everything else spins freely nothing binding also I'm not using any timing on the motor (which is an lrp x20) but I really want to be on the conservative side when it comes to top end speed.
I'll give the 69/30 a try thanks for the help
I'll give the 69/30 a try thanks for the help
10-10-2016, 05:18 AM
The motor has had about 10 packs through it, everything else spins freely nothing binding also I'm not using any timing on the motor (which is an lrp x20) but I really want to be on the conservative side when it comes to top end speed.
I'll give the 69/30 a try thanks for the help
I'll give the 69/30 a try thanks for the help
Formula for calculating Final Drive Ratio for the RB6,
(Spur Gear / Pinion Gear) x Internal Ratio = Final Drive Ratio
Example:
(76/30) x 2.6 = 6.586
For a blinky 17.5, that ratio above is already considered pretty safe and suits very technical twisty tracks. FYI, i don't run LRP X20 motors so i'm not too sure about their typical temperature range.
When you say "too hot", what is the exact temperature with a temperature gun?
10-10-2016, 06:31 AM
If you are already having motor temperature issues with 76/30, then 69/30 combo will make it worse.
Formula for calculating Final Drive Ratio for the RB6,
(Spur Gear / Pinion Gear) x Internal Ratio = Final Drive Ratio
Example:
(76/30) x 2.6 = 6.586
For a blinky 17.5, that ratio above is already considered pretty safe and suits very technical twisty tracks. FYI, i don't run LRP X20 motors so i'm not too sure about their typical temperature range.
When you say "too hot", what is the exact temperature with a temperature gun?
Formula for calculating Final Drive Ratio for the RB6,
(Spur Gear / Pinion Gear) x Internal Ratio = Final Drive Ratio
Example:
(76/30) x 2.6 = 6.586
For a blinky 17.5, that ratio above is already considered pretty safe and suits very technical twisty tracks. FYI, i don't run LRP X20 motors so i'm not too sure about their typical temperature range.
When you say "too hot", what is the exact temperature with a temperature gun?
I don't have a temp gun I was just going off my finger. After 10 laps I couldn't hold my finger on the lrp but after I put the speed passion in it was just warm not hot after another 10 laps, even the esc was cooler. Either way I found what I'm looking for anyway thanks for the help.