Big Rock Just to see what it will do

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, and others.

DetroitSS

Member
Messages
67
Reaction score
117
Location
Michigan
Arrma RC's
  1. BigRock 4x4
  2. Infraction
  3. Limitless
  4. Typhon 3s
I decided to put some 17mm hubs from my parts typhon. A metal spur, 24t pinion, Hobbywing 150amp esc, 2100kv motor and Gens 5000mah 60c 6s lipo just out of curiosity to speed run this weekend. I did put in a spektrum sr6100at to pair with my green DX5 rugged for the avc as I"m asuming with these little hoons I will need some help with stability.

IMG_20210511_182954.jpg
 
I decided to put some 17mm hubs from my parts typhon. A metal spur, 24t pinion, Hobbywing 150amp esc, 2100kv motor and Gens 5000mah 60c 6s lipo just out of curiosity to speed run this weekend. I did put in a spektrum sr6100at to pair with my green DX5 rugged for the avc as I"m asuming with these little hoons I will need some help with stability.

View attachment 145130
I hope your punch is set at the lowest. Can't wait to see the results. I have a 1700 kv and 20 tooth pinion in my Typhon 3s. I'm going to be ordering probably a 24. A 27 doesn't fit in the stock Arrma aluminum motor mount unless I Dremel out the screw holes. I know the M2c mount holes are larger but I'm not investing in that right now. The HR mount may actually work though. I think, though, 24 tooth is probably the largest size I can fit on the stock mount. I'm only going to run mine on 4s. If I had to guess, the speed is probably around 50-55mph. But I have no way of checking it. There's also no heat issues with it. I am worried about pushing it too hard and stripping the diffs or input gears. One thing is for sure, I need to make sure the steering and alignment is dialed in and driving straight before I go up in a pinion size.
 
I set the punch on all my speed runs to 1. I have the hot racing motor mount with the 24t pinion and theres still a little room to spare. I recently had the spektrum 130 amp smart esc in mine with a 4c lipo with a 22t pinion on Duratrax lockup mt tires and hit 56 before I ran out of room and didnt hit full trigger yet so you are close with the speed. I am quit sure I would have cleared 60mph. Today the now 6s big rock hit 70 and again I live on a narrow and not so long street and didnt hit full trigger. Tomorrow I am going to head to a better area and see what it will do. All the 4s stuff is going into my typhon. I printed some limiters for the inside of my shocks so I lowered the big rock and stiffened up the suspension a bit so well see. It has the power of my Infraction with half the weight. It should be pretty fast. I am sure I will have to replace the driveshaft and axle with metal ones on the big rock. The tpu wing I printed for it worked great on 4s but flails in the wind on 6s when it hit 70 so Ima print a carbon fiber one like I did with my Infraction.
 
Old Thread: Hello . There have been no replies in this thread for 90 days.
Content in this thread may no longer be relevant.
Perhaps it would be better to start a new thread instead.
Back
Top