Retro_Guy

how's this thing work in that grass? i do quite a bit of running on grass just like that

ChocoTaco73

iTrader: (5)

The motor gets a little warm by the end of the pack but it was also about 100 degrees out so that didn't help matters lol Scoots right along though, handles well, it's a blast!

Milkdudd

iTrader: (13)

Does anyone know if these ribbed front tires will fit on the Mini-B buggy? Thanks in advance

Mac The Knife

iTrader: (33)

No, the bearings for the front wheel are in the rim itself, not in the spindle.
If you could get the tires separately, they look like they could be mounted to the Mini-b rims.

Milkdudd

iTrader: (13)

Yes thanks, that's what I meant. Not looking forward to remove them from the rim. I don't have the buggy yet, will pick one up in about 2 weeks. Maybe by then they will sell those tires separately from the rims. It seems top secret information to find out the rim size of the Jrx2 mini compared to the mini B. You'd think they would just put it in the specs that they release

foampervert

iTrader: (5)

Why not just rere the jrx2 with the xx gearbox?
rere some retro hopups to get the fun going... like:
-Pro shocktowers and shocks
-pro h arms
-hydra drive
I would spend coin on a rere...

Retro_Guy

what did the hydra drive do, i dont think i ever new anyone that had one

Mac The Knife

iTrader: (33)

It was a fluid coupling that allowed you to run your slipper looser. The fluids were available in three different viscosities.

ChocoTaco73

iTrader: (5)

The hydra drive absorbed some drivetrain shock, it helped a good amount if you were running mod on a bumpy/rutted track. Back when ESCs didn't have throttle or torque adjustments it also would calm the throttle down a bit if you were on a low traction surface.

kufman

iTrader: (6)

I think the ultimate thing the HydraDrive did was to add rotating mass to the drive train. They were a pain to maintain and liked to leak but they were also a big flywheel which helped to smooth out the power delivery. In theory, the Hydra unit had the opposite response as the slipper. Slippers have the most friction before they slip (static coefficient of friction vs kinetic) and a fluid drive with have more drive with more slip (just think about trying to push you hand through water at different speeds). I don't know which of the things actually made it work but it was somewhat useful on slippery tracks although you paid for it with run time.

Retro_Guy

so they were like having a torque converter between the spur and slipper (?)

Mac The Knife

iTrader: (33)

More like a viscous coupling in an awd vehicle,

RogueIV

iTrader: (5)

The Topic of Hydra-drives came up a few times for me the past couple weeks so I dug this out:


And yes the added rotating mass is pretty considerable. Between the viscous coupling effect, the rotating mass and being able to loosen the slipper to comically loose it really does help smooth out the throttle on lose/rough surfaces. It was really a innovation of the times. I actually heard some folk are using these for Drag racing, not sure how effective it is for that though, I'd be afraid of melting the poor thing.

Retro_Guy

alright, things seem to be silent on the mini jrx2. are they a sales flop or are people just collecting them as shelf ornaments? whats going on?

thefnshow

iTrader: (32)

i would like some hop ups for it