Ofna Hyper ST Conversion!

[Arct1k]

The one that went up in smoke or a new one?

[BL_RV0]

New one. Other one (smoked as of now) will be sent into Castle in a couple days and will be for the MBX4-RR.

[Finnster]

I don't feel like starting a whole another Hyper ST thread, so I'll just throw a couple pics of mine up here. Currently it has my old 8XL and my MM from my CRT.5 currently powered by 4S 5Ah TrueRCs. Plan is to change over to a MMM and a Neu 1515 2.5D and adding a cell to the batt for 5S. I can ditch the BEC and the extra wires for the fan and the bec power supply then as well and clean up more. I have it geared 12/46. On the mashers tonite I was pulling 45-46 mph on radar. A bit too fast for the track. Here's to the MMM coming out soon.

BTW.. I don't know why the paint looks sparkly. Its insanely humid out, must be water droplets. I also already managed to lose a wheel nut and had to use a spare Lots of loctite on that one. :)

[Arct1k]

You should be closer to 38mph unless you are getting .5" ballooning...

Differential Ratio: 3.909090909090909
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 46
Pinion Tooth Count: 12
Total Voltage: 14.8
Motor KV: 2084
Tire Diameter (inches): 6.6
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0.0073
Spur/Pinion Ratio: 3.83 : 1
Total Ratio: 14.98485 : 1
Tire Circumference (inches): 20.73 inches (526.66 mm)
Total Motor Speed: 30843.2 RPM
Vehicle Speed: 40.41 mph (64.92 km/h)
Estimated Adjusted Speed: 38 mph (62 km/h) - 5% loss
Effective KV Value: 2084

[Finnster]

Originally Posted by Arct1k

You should be closer to 38mph unless you are getting .5" ballooning...

Differential Ratio: 3.909090909090909
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 46
Pinion Tooth Count: 12
Total Voltage: 14.8
Motor KV: 2084
Tire Diameter (inches): 6.6
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0.0073
Spur/Pinion Ratio: 3.83 : 1
Total Ratio: 14.98485 : 1
Tire Circumference (inches): 20.73 inches (526.66 mm)
Total Motor Speed: 30843.2 RPM
Vehicle Speed: 40.41 mph (64.92 km/h)
Estimated Adjusted Speed: 38 mph (62 km/h) - 5% loss
Effective KV Value: 2084

I prob am, def even more so in the F under WOT due to the light fluid in the diff. I admit it was much higher than I expected, but I ran it several times back to back with the radar gun and it was consistantly 45-46mph.

[Arct1k]

I went for about 20k in the middle...

[BL_RV0]

Yeah. Problem is, all I've got on hand is 7k, 5k, and 1k. I'll probably do some testing and see what i can come up with. I'm currently running 5/5/3 diffs. Going to change out the center oil tomorrow. Nice conversion Finnster! I really hope my MM gets here today, so I can test this beast! How long did it tke for you to lose your wheel nut?

[Arct1k]

5k is too light for brushless 10k is really I think the min

I would put the 2.5D in and run the 18... You will be a little faster than me but should be manageable and much better than that 8xl

[Finnster]

I got 10K in the CD and its too light. next stop was 20K and see hwo it does.

The only thing I need are more 5.5mm bullets. I meant to order w/ the 2.5D but forgot. The LHS doesn't have them, they are on backorder and won't be here till the 21st. :(

I may redo the motor, but its such a PITA. Seems like even the 14T would gimme 35mph or so would would be fine for track

[Arct1k]

I think I may have a set at home - I can post them to you if you PM your address.

You can send me a set back when you get them - Do you just need three female?

Worst case can just fit them on the 20th

[BL_RV0]

Got the MM in the mail... Castle link won't work again. I gave it a 2min run anyway and destroyed the bore reducer. Also chewed up my pinion pretty badly. Still usable, but it won't last more than ~10 runs probably. Not a very good day...

[moneybagsfor-rc]

Do any of you happen to know where I could buy a replacement (or replacements parts) center differential for this Ofna Hyper ST? I need one for a little conversion of my own.

Thanks guys

[tc3_racer_001]

same as the hyper 8 buggy im pretty sure, or very similar. just the way they are mounted. but dont trust me on this until someone confirms :)

[brushlessboy16]

BL_rv0 you might as well just ship your MM's out to people to get them programmed :D

[tc3_racer_001]

u got public libraries in your state? if you do just use one of them with a usb with castle link on it :)