CRT.5 - My first conversion

[slow-stampede]

Yeah, it's a nice piece of art. Pretty light too.

[Jon]

I thought the century pinions were not hardened...

Here is the link to the prop adapter
http://www.maxxprod.com/mpi/mpi-291....op.%20Adapters
I was thinking the ACC391 would work out nicely.
However, I like your adapter better. Let's see the picture when you ge that bad boy mounted.

Later
Jon

[Jon]

okay.... any updates on the new spur option? My car looks so lonely waiting for a plastic spur. Any news at all???? Are we going to be looking at days or weeks?

Jon

[Jon]

I'm thinking for now, I'll buy the prop adapter and century non-hardened pinions and use the stock spur. Now the magic question... what pinion range should I try to start? I have to buy them, so I want to start out at least close. I'll be using the 3300 matched 6 cell packs and the Novak SS5800 for now. Thoughts?
Jon

[IBJAMMIN]

I'm running a 13/46 right now in the CRT.5 with good temps on everything with the MM5700 and 3s lipo. The century pinions say there hardened on towers site?

I would go ahead and do the conversion and when the plastic spur comes out you can swap it out why wait it could be a week or a month away. :)

[Jon]

Quick update....

Got the car running Friday night. Pretty ghetto with my Century pinion (14 tooth). Ran 1 pack through, pretty high temps So I think I am over geared, but this is the only pinion I could find locally. Anyway, I took it to the track Saturday night to get a feel for the car. Loved it. Another guy was running his nitro version and this was just as fast down the straight. Easily took him in the technical spots. Anyway, the pinion lasted two packs till it got all chewed up. Now, it is dead on the table. Really like the car, lots of potential.

Issue 1: pinon gear is garbage. Still waiting on the plastic gear option. Went to Hobby Town to look at what options I can come up with. Nothing promising, so I went home.

Issue 2: I think I toasted my Novak Super Spot 5800 motor. The rotor shaft moves in and out about 1/8". No good. Thinking I blew a bearing, I took it apart and find nothing too unusual. After playing with it for a while, I figure the bearing in the endbell somehow moved outward the 1/8" causing the play. I removed the bearing and reset it in the endbell, but I think I really screwed something up now. Can't get it together again correctly... totally hosed. If I can' fix it, I will send back to Novak for help. Since it is the original Novak brushless system (discontinued) I figure I will see if I can get a replacement for soemthing else. They have a program where an out of warrenty product can be replaced with an upgrade to anything else. I am too tired to try and figure it out tonight (I also am a bit foggy from the Tylonel Cold and Flu meds I have ben popping like candy). If I replace this with soemthing else, what do you all recommend for a new Novak system? I want controllable speeds for racing, not nuts high speed runs. However, I would like about 150% of what the 5800 did for me. Thinking the GTB/Velociti 5.5R....

or...

I may just grab a Mamba Max System (4600 or 5700 ) and go two or three cell 5000 mah lipo.

Thoughts???

Issue three : Back to issue 1... I was thinking about replacing the center diff completely... maybe going to a gearbox from a 1/10 scale buggy. I have lots of those from the olden days, and could ghetto somehing together. Now I could run 48 pitch gears with all the options in the world available. Slipper clutch and a ball diff.... hmmmmm. Or... somhow replace the stock diff with the ball diff from the buggy gearbox and somehow use that.

Another thought.... "fix" a stock clutch bell and make it fit my motor. The hardened bell will be nasty I think to cut without a lathe. Maybe I can cut it with my sawsall. - off to the garage to make some noise.

Too many options for so late at night.

Later,
Jon

[Jon]

Clutchbell cutting update:

Success.... I managed to ruin two blades (Jigsaw and sawsall). Made a nice little "scratch" in the endbell though. I figure ten more blades and I may make it halfway through. :035: :007:

Time for another approach. Going to bed.

Jon

[IBJAMMIN]

A dremel with a abrasive cut off wheel will cut the hardened CB like butter.

Was the 14t century pinion black? I dont think the 14t is hardened the 9-13t pinions are I think? there the black color pinions.

With the MM the 5700 is great on 2s for the dirt and if you want some sick speeds drop in a 3s for some on road fun. If your looking for longer runtimes and mostly drive on dirt then the 4600 might be a better choice.

If your going lipo get a pack rated at 100amps constant the 4000mah Maxamps pack I have rated at 80amps constant gets a little warm with the 5700 motor.:)

[Jon]

Originally Posted by IBJAMMIN

A dremel with a abrasive cut off wheel will cut the hardened CB like butter.

Was the 14t century pinion black? I dont think the 14t is hardened the 9-13t pinions are I think? there the black color pinions.

With the MM the 5700 is great on 2s for the dirt and if you want some sick speeds drop in a 3s for some on road fun. If your looking for longer runtimes and mostly drive on dirt then the 4600 might be a better choice.

If your going lipo get a pack rated at 100amps constant the 4000mah Maxamps pack I have rated at 80amps constant gets a little warm with the 5700 motor.:)

Good call on the dremel.... worked like a charm.

Indeed the century pinion was black... the 9-13 are different colors?

I still am leaning toward replacing the Novak with another Novak.... gotta send it in anyway, so I'll see what my options are.

I'll need 20 minutes plus runtime for racing against the nitro boys. Leaning toward that nice Max amps 5000....

Jon

[IBJAMMIN]

Originally Posted by Jon

Indeed the century pinion was black... the 9-13 are different colors?
Jon

The picks of the Century pinions on Towers web site show the 14t in natural steel color and the 9-13t pinions are black? They say there hardened but if it only lasted 2 packs maybe they are not hardened? Could you post a pic of the pinion? I'm curious to see if it was flex that killed it or just soft metal.:032:

[MetalMan]

The 14t Century pinion I have is black (black oxide coated or whatever).

I was running those century pinions in my first buggy conversion with the metal spur gear. I know that the problem wasn't mount flex or jammed gears. I got an average of 10 minutes per pinion running hard on 4S with a 7XL, geared 14/46. Anything after 10 minutes was iffy.

[Jon]

Got my parts to adapt the hacked clutch bell to the prop adapter I have. I'll post my results with pictures ASAP.

In the meantime... just an FYI. Thought this was interesting. If I should not post this on this site, please PM me and I'll edit this post and remove the link.

http://forums.radiocontrolzone.com/s...42#post2242242

Trying to share the knowledge...
Later,
Jon