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Old 04-24-2013, 09:26 PM   #496
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how many of you guys used exotek chassis? what is the weight of it with the bulk heads & gearing.
how are the ball difs ? is their any dif upgrades or the stock ones work good?
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Old 04-25-2013, 04:03 AM   #497
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Marv, we are going to use 2 sprint flux cars today to narrow down what happened to mine, thanks man!
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Old 04-25-2013, 06:07 AM   #498
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Originally Posted by TeamThibault View Post
how many of you guys used exotek chassis? what is the weight of it with the bulk heads & gearing.
how are the ball difs ? is their any dif upgrades or the stock ones work good?
I have not weighed mine with only the bulkheads and gearing attached.

I have not added ball diffs. I'm still using the stock gear diffs. The only mods I did to the diffs were to add ball bearings in place of the shaft bushings and shim the shafts to reduce slop. I have a one way diff that I might try but it probably isn't recommended for racing. You give up front brakes with it.
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Old 04-25-2013, 06:10 AM   #499
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Max, does your motor use a sensor cable? I'm not all that familiar with that model but if it does, try another one or at least check the connections. Also, make sure that you have the correct battery type programmed.
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Old 04-25-2013, 07:14 AM   #500
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Max, Also check the wires from the ESC to the receiver =
HPI routes them under the upper deck too close to the lower section of the belt =
After several runs the belt will ear through the wires -

HPI Sprint 2 Mods - Making a silk purse from a sow's ear.-dscn4239.jpg


Re-Routed =
Go over the top
You might have to get an extension wire from LHS -


HPI Sprint 2 Mods - Making a silk purse from a sow's ear.-dscn4693.jpg
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Old 04-25-2013, 07:21 AM   #501
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Quote:
Originally Posted by TeamThibault View Post
how many of you guys used exotek chassis? what is the weight of it with the bulk heads & gearing.
how are the ball difs ? is their any dif upgrades or the stock ones work good?
Drift or Grip?

I'm running OEM diffs (out drives shimmed to remove slop)

I have a spring & shims in my front diff to tighten it some
No spring in the rear

I've tried a one way in the front =
You give up having brakes (most of them anyway)
Not really good (IMAO) on a small, tight, technical track
Not good for a noob (IMAO)
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Old 04-25-2013, 06:13 PM   #502
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ya out track is small and low grip carpet and very technical , race no drift. never new the dif had bushings, never taken it apart yet. what size of bearing for the dif?

thanks
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Old 04-25-2013, 08:38 PM   #503
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ya out track is small and low grip carpet and very technical , race no drift. never new the dif had bushings, never taken it apart yet. what size of bearing for the dif?
thanks
The bushings are on the diff case out drive housings / bulk heads

2 - 5x8x2mm Bearings - IF you chose to upgrade the B070 bushings to bearings

LINK =
HPI Sprint 2 Mods - Making a silk purse from a sow's ear.

NOTE:
The rear distances from inside the axle cup to inside the diff cup are shorter in the rear of the car than the front of the car=
After the shim mod =
Using CVD's in the rear could be an issue -

TESTING A BEARING UPGRADE IN PROGRESS

Last edited by Marv; 04-30-2013 at 03:01 PM. Reason: "Any girl can be glamorous. All you have to do is stand still and look stupid." Hedy Lamarr
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Old 04-26-2013, 03:57 AM   #504
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Tried another ESC from Marks car and everything worked so i have a new one coming.
I had moved the ESC on top of the battery claw holder and the last few times we ran real hard and my batteries got super hot and my ESC was right there on top of it so i think the heat took out the ESC so time to find a better spot for it.
I am going to re-route the wiring, I noticed the way they did it when i first got it and didnt like it, That was one of the first things i checked due to being so close to the belt.
Thanks for the help guys!
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Old 04-26-2013, 09:03 AM   #505
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Thumbs up TENNIS COURT & B-BALL COURT

Lucky me has a b-ball court & a tennis court not far from my front door -
Surfaces are not the best
But not the worst either

Tennis court is definitely the better of the two

HPI Sprint 2 Mods - Making a silk purse from a sow's ear.-0425131059.jpgHPI Sprint 2 Mods - Making a silk purse from a sow's ear.-0422131217.jpg

I just have to get jump on the future tax payers -
Or wait until they're all in school -

Last edited by Marv; 04-29-2013 at 01:12 AM. Reason: Shane Falco: "Danny! Remember what I said about red shirts in practice?"
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Old 04-28-2013, 03:53 AM   #506
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The tennis court looks good, put out a few cones and go through a few batteries
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Old 04-28-2013, 06:04 AM   #507
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Quote:
Originally Posted by Marv View Post



This thread started on 05/22/2012
50,075 views as of this post



Thanks to all the people that have contributed to this thread
AND
To all that have viewed it
AND
To those that will contribute & view it - - -
Marv


May I say a big thank you to you Marv, this thread has been invaluable to me on many occasions.
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Old 04-29-2013, 11:58 AM   #508
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I noticed on my 4tec that the rod ends are the same as i tried them and if ne1 want they can use the rod ends that come on the 4tec to compleatly remove all slop in the fron as my 4tec has almost 0 slop will try n let every1 know need to get the parts n screws but the ones i have used compeatly removed slop in the are i need
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Old 04-30-2013, 03:29 AM   #509
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New ESC did the trick, old one did all the right things with the led lights (green red yellow) but was not running the motor, Back on the road again, Hope to run in the parking lot after work tonight.
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Old 04-30-2013, 03:05 PM   #510
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Thanks WaftyCrank -


Scionara05 = Do you have some part numbers?


Max = GLAD you're up & running again!
See if HPI will warranty that ESC for you.

Last edited by Marv; 05-01-2013 at 02:42 PM. Reason: “You only live once, but if you do it right, once is enough.” ― Mae West
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