Yusa buggy?

Originally Posted by stampedeproject

Very Nice!!


Who's CF parts are you using?

Were they direct fits?

I have the Power Racing stuff for the Katana, It looks like he has the same parts. The carbon was a direct fit, the front upper arm mount was not. I posted about it earlier in this thread.

Thanks! I got my parts from Larry's RC .. great company!!


http://www.larrysperformancercs.com/...gi?category=43

Originally Posted by stampedeproject

Very Nice!!


Who's CF parts are you using?

Were they direct fits?

[Mike_D]

Does anyone know if this chassis will fit the Yusa buggy?

http://www.larrysperformancercs.com/...004&type=store

I've trashed the stock one pretty well now and am in need of a good replacement. If not any idea's of others that may work?

it should be the one.. fits fine I think

[stampedeproject]

UPDATE - The Novak 4.5 HV Test

I finally got my butt in gear and started some testing. The results quite frankly pissed me off in more ways than one. I tracked Motor and ESC Temps, Motor RPM, Throttle Level, Voltage, and AMP draw using my with my Oracle Data Recorder.

My thought was that since the Novak HV 4.5R ripped it up pretty well on my E-Revo it should be able to handle a freaking buggy - that would be a big NO and a disappointment in so many ways. First the massive Novak motor heatsink had to be ground down on the mill to allow for driveshaft clearance and my rear support had to be moved to the other side of the driveshaft (that part was easy and required just a countersunk hole.) I fabricated a ESC mount to bolt up to the diff tower and mounted the GINORMOUS fan cooled Novak HV ESC. and spent the better part of an hour getting everything hooked up to the Oracle data recorder.

Basically I beat the hell out of the system until it thermaled and boy did it thermal a lot. Turns out that temp seems to be around 155 degrees however I would imagine if I could have mounted the temp probe inside the ESC instead of stuck in the heat sink that temp would have around 200 degrees (a typical termaling temp). RPM topped out at just over 10,000 RPM with the 3S 5000MH MaxAmps Lipo pack with current maxing at around 100 AMPs, and a 12.2V peak. The motor really wasn't the issue, it was that freaking decade old ESC. Come on, let's at least move into year 2000+ technology. It's fan cooled for God's sake, it can't even keep cool with a 1.5" fan blowing on it. The kicker was it was also pretty damn slow, not like I can gear the thing down a ton from the 16T pinion. I didn't have a GPS strapped on however, eyeballing it I would say in the high 30's.
I am going to gear down a bit if I have the clearance, otherwise I may give the 4.5R motor a spin with a Mamba Max or Tekin R1Pro and see what happens.

I would say 3s isnt enough for a 1/8 buggy at any speed, especially not for the high 30mph range. I gear my buggy on 4s for low to mid 30s. The overgearing combined with the tiny novak rotors would definitely cause your heat problems.

[lincpimp]

Originally Posted by B15

I would say 3s isnt enough for a 1/8 buggy at any speed, especially not for the high 30mph range. I gear my buggy on 4s for low to mid 30s. The overgearing combined with the tiny novak rotors would definitely cause your heat problems.

This is exactly correct. I run a 6.5 hv motor in a crt.5 on 3s, and it seems like it gould do with 4s. Those novak hv motors really need rpm to produce any power. Go up to 4s and drop to a smaller pinion.

[TDC57]

(For what it worth) Mike just sold a 5s for 170 bucks, i should get around 15 minutes of running time out of it.. http://www.rc-monster.com/proddetail...5S_3700&cat=18


Nice buggy!!, Sorry to hear your having ESC issues at the moment.

Have a great one

Shaun.

[stampedeproject]

Originally Posted by lincpimp

This is exactly correct. I run a 6.5 hv motor in a crt.5 on 3s, and it seems like it gould do with 4s. Those novak hv motors really need rpm to produce any power. Go up to 4s and drop to a smaller pinion.

I will 4S a shot and drop a couple teeth on the pinion. Never had these issues on the e-Revo even on 2S - damn thing would run all day. Just remembered, I was running a BEC on the Revo. Might try that and see if that helps also.

Novak finally started giving gearing recommendations for their motors. The do not recommend using the 4.5 for anything but a speed run, but they suggest using a 10-11t pinion for the new 5.5 (depending on model). Also, assuming you are still using the 1/8 in shaft, the old 4.5 is equivalent to the new 5.5, so a 10t or 11t should work. If you have a plastic spur, century and thunder tiger make mod1 pinions for their helis (go down to 9t) but they are not hardened. I think Novak has "hardened" pinions now in 11t, maybe even 10t.

[stampedeproject]

Originally Posted by cmcclive

Novak finally started giving gearing recommendations for their motors. The do not recommend using the 4.5 for anything but a speed run, but they suggest using a 10-11t pinion for the new 5.5 (depending on model). Also, assuming you are still using the 1/8 in shaft, the old 4.5 is equivalent to the new 5.5, so a 10t or 11t should work. If you have a plastic spur, century and thunder tiger make mod1 pinions for their helis (go down to 9t) but they are not hardened. I think Novak has "hardened" pinions now in 11t, maybe even 10t.

Wow an 11T Mod1, now that is a freaking tiny Mod 1 pinion - that might work. Just guessing here but I would say that since I am only seeing 10K RPM, I need to go way down on the gearing and since the motor didn't seem to even break a sweat, I might be able to ditch the heat sink.

Originally Posted by stampedeproject

Wow an 11T Mod1, now that is a freaking tiny Mod 1 pinion - that might work.

I have a 9t mod1 pinion. I think it was made by century.

[stampedeproject]

Wooo hooo I already have a 12T. I'll give that a try this weekend.

9T, WOW didn't even think a Mod1 could make the radius at 9T - Do you get any weird spur/pinion wear?

[bl-is-future]

WOW i am shocked, i see my LHS is mentioned. http://www.larrysperformancercs.com Does anyone else live near this HS?

[stampedeproject]

I gave the Yusa a complete tuning overhaul. I took my Losi Race Roller and matched that setup to the Yusa. Holly cow it changed the handling completely.

I will work up and post a setup sheet.