RC-Monster Forums - On-road BL project

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Quote:

Originally Posted by BrianG

Well, that was dumb. I got home from work and said "what the heck" and tried the Jato on 14 cells. Well, the first 50 feet or so was extremely fast and then the rear tires blew. Actually, the rim shattered which took the tire with it. Maybe it already had a hairline crack, I don't know. All I do know is that the potential speed was scary! Lesson learned here is that a perfectly balanced tire on very strong rims is a must.

I put some other spare tires I had laying around and ran it back on 2s and everything still works, so I'm OK there...

Any pictures of the carnage??????

No, no pictures, sorry. Not much to see really; the wheel and tire is torn up pretty good. Aside from that, not too much damage. Scratched up a brand new body, but that's OK. When the tire blew, the Jato did some crazy fishtail thing for a microsecond before flipping over and cartwheeling a couple times before landing on the wheels and spinning around several more times. It could have been a lot worse!

Did your teeth cringe? Mine do when that happens! But the jato seems pretty durable.

No, not really, it kinda happend so fast that it was over before I had a chance to cringe. I do know what you mean though - like when you take a jump that you just know is not going to turn out right...

Quote:

Originally Posted by BrianG

Or a curb that jumps out atcha!:005:

Been there before! LOL!

I'm running a 14 tooth pinion on my T4 and you're calculator shows it running 52mph with 3s lipo and using 1/4" growth for tires (panther step pins). With an 18 tooth pinion it says 68 mph using the same parameters

Quote:

Originally Posted by crazyjr

No wonder why you love your lipo!!!!!!!!! Glad yo like them larry:027:

with the 14, its as fast as my Jato was before i detuned it

OK, I decided to re-do the Jato layout. Wednesday nights are electric-only at the local track, but there aren't any 1/8 buggies or MT yet, so I'm stuck using the Jato or the CRT.5 (if the plastic spur would be done, I could finish it!).

Anyway, I wanted to redesign it to use the same 5Ah lipo packs that my CRT.5 uses so I only need to bring one battery type, to keep the antenna inside the body, and to get more weight on those slippery back tires! Mission accomplished.

I ran the new version tonight a bit in my driveway and am quite pleased. Still have to work on that darn driver though. :)

So, onto the new pics. The new parts are nice and clean, but the rest is still dirty.

http://scriptasylum.com/bl_conversio...s/jatov2_1.jpg

http://scriptasylum.com/bl_conversio...s/jatov2_2.jpg

http://scriptasylum.com/bl_conversio...s/jatov2_3.jpg

http://scriptasylum.com/bl_conversio...s/jatov2_4.jpg

I still have the old parts and two 2s2p emoli packs (with about 30-40 runs on them) if anyone is interested. Old parts:

http://scriptasylum.com/forumpics/old_jato_parts.jpg

nice brian!

i see you moved the mm esc to the rear, but how else did you manage to get more weight on the rear? did you fill the back battery box with something?

pretty sweet custom pieces too. i like the new position for the spektrum.

Sweet!! Looks really good. Are you running 2s on the 4600? Good luck racing!!

Thanks guys!

Well, the battery was moved back about 1/8" and it is lighter, so that affects overall weight by itself. The COG is also lower since I'm now using lipos. And yup, they are 2s. I might go with 3s eventually, but 2s is plenty fast on the small truck I'll be running on.

I did have some steel washers in the battery box, but removed them now. With all the adjustments, the whole truck is lighter now. About 1/4 lb I would say. That should help runtime as well.

FYI: I realized I posted my new Jato layout in the wrong thread. Being a mod isn't so bad. :)