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-   -   SC10 4x4 Thread (https://www.rctech.net/forum/electric-off-road/511493-sc10-4x4-thread.html)

fastrc64 10-18-2011 06:38 PM

don't give up just yet
 

Originally Posted by tony montana (Post 9798808)
Im starting to question my choice on this truck. Thinking I should have maybe went with the losi. I hear the losi drives more like a 1/8 buggy which is what I race normally. I did run the truck on a track for the first time this past weekend and made one lap. Yeah one lap, truck was so twitchy and seemed to handle so bad I pulled it off the track. Plus this pin mod thing, I would think if I did that mod it would make the truck worse for me. May have this truck in the for sale section soon

i bought my truck when they first came out . yes it was a little twitchy but very fast i ran the stock diff setup and such for awhile and just drove it and won a lot of races . made changes as i saw fit that would make the truck do more of what i wanted . and here are the changes as i made them .
1 ----- 2 mills shim of bump steer
2 ------5 mills shim to C hub on the camber rod end
3------sway bars medium front and rear
4------bought and installed FT shock bodies and FT shock shafts and the shocks i run the small hole pistons front and rear and installed track star O rings . the front is AE 30 wt and the the rear is AE 25 wt oil (really keeps the truck settled down)
5------bought and installed MTK slipper basket
6------front diff fluid 12,000 rear 7000
7------moved the rear outer camber rod to the outer most hole on the hub
and shimmed the rear shock tower ball stud by 2 mills
8-----installed the front over drive pulley
equipment installed in the truck are tekin RX8 pro4 4000 540 geared at 62 13 10% timing , currant limiter set at 75% brakes at 50% with the radio adjustments for forward percentage down to 110 from 150% drive
FWI the losi trucks at the last race i was at was turning fast laps of 13.2 and i was turning 12.6 second laps
the next thing i am changing is pinning the front slipper :nod:


6------

Divey 10-18-2011 06:40 PM

Thanks CraigMBA, that would make sense.

Now I got to finally drive it and while it performs awesome the esc got to 200*F within the first 5-7 minutes of driving. Ambient temp was cool around 70-70*F. My setup is a Castle MMP esc and a Tekin 550 4.5 motor geared 14/62. Motor never got past 175*F. I thought my gearing was pretty safe being a 14 tooth pinion but it looks like I may have to drop it down to 12 or so. Other than that and maybe tweaking my steering expo a little this thing is awesome. My wife just drove the Losi SCTE the first time as well and for her she loved it. We swapped half way through the run and before we finished a lap we swapped back. The Losi to me feels more solid and can be driven pretty hard while the SC10 feels more nimble like it's tippy toeing around the track. Since my wife loves driving her truggy I figured the Losi would be best for her and it was. Anyways what do you guys think about my heat issue because usually we drive during the day and being in San Diego the temps are usually hotter.
Thanks

Terry

EDIT: I have no fan on the esc because I switched sides for the battery and electronics due to fitment issues so I cut the top of the esc off to fit.

Slotmachine 10-18-2011 06:42 PM


Originally Posted by tony montana (Post 9798960)
yeah really. When it would almost spin out in every corner and just plain suck to drive yeah I pulled it off. And I had the correct tire for the track. So yeah. I have been racing for 10 years and this by far was the worst handling vehicle I have ever ran out of the box to date. Not saying it wont get better, but not impressed to say the least so far.

I guess I was lucky.....I had the opportunity to see a stock truck in action before I built mine. The first thing I did was shorten the shock travel, that was a big improvement on super high bite.

I have not had a chance to try the pined shaft yet, but I will.

symmetricon 10-18-2011 06:43 PM

Ryans' setup is up at AE.... WOOOOO
http://teamassociated.com/pdf/cars_a..._Cavalieri.pdf

Sofa King 10-18-2011 06:54 PM


Originally Posted by Divey (Post 9799735)
Thanks CraigMBA, that would make sense.

Now I got to finally drive it and while it performs awesome the esc got to 200*F within the first 5-7 minutes of driving. Ambient temp was cool around 70-70*F. My setup is a Castle MMP esc and a Tekin 550 4.5 motor geared 14/62. Motor never got past 175*F. I thought my gearing was pretty safe being a 14 tooth pinion but it looks like I may have to drop it down to 12 or so. Other than that and maybe tweaking my steering expo a little this thing is awesome. My wife just drove the Losi SCTE the first time as well and for her she loved it. We swapped half way through the run and before we finished a lap we swapped back. The Losi to me feels more solid and can be driven pretty hard while the SC10 feels more nimble like it's tippy toeing around the track. Since my wife loves driving her truggy I figured the Losi would be best for her and it was. Anyways what do you guys think about my heat issue because usually we drive during the day and being in San Diego the temps are usually hotter.
Thanks

Terry

EDIT: I have no fan on the esc because I switched sides for the battery and electronics due to fitment issues so I cut the top of the esc off to fit.

Are you fitting the MMP ESC under the belt cover? Must be an older one, my older one did not fit, but new one did. You can pick up the new case/fan kit for the MMP and have the fan back as well as fit under belt covers. You NEED a fan with that ESC and motor (or any of the hot SC motors).

CraigMBA 10-18-2011 06:57 PM

They went to the trouble to comment on the standard decoupled slipper.

That means...people, the pin is a tuning device! Use it! Hot Rod during the Reedy race was blue groove and high bite (compared to what I run on which would be packed and dusty). Obv. Ryan liked the decoupled slipper because it gives the truck more steering off power. I think.

Overdriven front end, huh...

CraigMBA 10-18-2011 07:01 PM


Originally Posted by Divey (Post 9799735)
Thanks CraigMBA, that would make sense.

Your welcome.


Originally Posted by Divey (Post 9799735)
Motor never got past 175*F.

Seriously? I never had mine over 135! :eek:

CoyoteSlash 10-18-2011 07:03 PM


Originally Posted by symmetricon (Post 9799741)
Ryans' setup is up at AE.... WOOOOO
http://teamassociated.com/pdf/cars_a..._Cavalieri.pdf

PROTOTYPE MULTIPLATE SLIPPER?

So they 'are' doing exactly what you guys are. (I don't use a basket)

And it even says in the notes "Standard decoupled slipper" almost pointing at specifically 'not' using a pinned slipper.

Very interesting.

Cameron Kellogg 10-18-2011 07:04 PM

Ha! pretty close to my set-up. Guess I need to try that 19t front pulley.

Divey 10-18-2011 07:06 PM

I am starting to think maybe I have some timing on the motor. When I got it I took the rear screws off and put some loctite on them. At that time I didn't even think about the position of the rear plate. Also I have the esc set to medium power. Now I know the timing would create heat but would the medium esc setting?

Terry

CraigMBA 10-18-2011 07:10 PM

On my 1c oval car one hash mark of timing (going from, say, 44 to 46 degrees) is worth 10 degrees of temperature, so I'd say yes.

Divey 10-18-2011 07:16 PM

I will take it apart and check it. Which direction is 0 timing. Also is it ok to keep the power on the esc set at medium.
Thanks

bohdi 10-18-2011 07:17 PM


Originally Posted by Chris Jarosz (Post 9798260)
I can't speak on everyone's behalf, but alot of guys I have seen are running the Fast Lap Products clutch basket. I haven't seen/heard of any team guys pinning the top shaft.

Can you please provide a high-res pic of their clutch basket?

CoyoteSlash 10-18-2011 07:21 PM


Originally Posted by bohdi (Post 9799910)
Can you please provide a high-res pic of their clutch basket?

Not shooting you down or anything, Bohdi, but the MTK basket is exactly the same thing, I just believe they did theirs out of a plastic.

Slotmachine 10-18-2011 07:26 PM


Originally Posted by CoyoteSlash (Post 9799931)
Not shooting you down or anything, Bohdi, but the MTK basket is exactly the same thing, I just believe they did theirs out of a plastic.

I wrote AE about the basket when they first became available. I mentioned they could do the same with a deeper recess on the spur gear , I wonder if that's what they did? :eek:


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