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Old 09-13-2012, 10:48 AM   #76
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Ahh, there u see... Interesting indeed. But Im personal more into a sensor combo. The feeling and response is better.
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Old 09-13-2012, 01:59 PM   #77
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Ahh, there u see... Interesting indeed. But Im personal more into a sensor combo. The feeling and response is better.
I was recently told by someone whom I consider to be pretty intelligent that the Castle motors problem with cogging etc is not the motor it is the MM esc. He runs a CC 2200kv with an RX8 and says it is perfectly smooth. I thought about picking up one of the NEU 2200kv and another RX8 to see how that works out. Initially im going to gear it high and run the 1900kv RX8 combo since the NEU has a 6 - 8 week lead time. I have given up on the idea of drag racing and would really rather bash and race around the track instead, way more fun.
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Old 09-13-2012, 02:40 PM   #78
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Just picked mine up! Gonna start the build tonight.
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Old 09-13-2012, 09:30 PM   #79
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dumb question here but does the kit come with a body?
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Old 09-13-2012, 10:39 PM   #80
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dumb question here but does the kit come with a body?
No body, no tires. Does come with 300k, 40k, 1k diff oil, and grease though. Pretty nice kit so far. I have the diffs assembled, center diff and motor mount installed and rear assembly installed. I already have some good ideas on how to modify the motor mount to gain the extra 4mm to fit the Tekin 2250kv truggy motor too. Will know more once I get done and can wrap my head around it.
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SERPENT S-411 2.0 Team Orion Vortex-R Pro and VST Pro 13.5T
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Old 09-13-2012, 11:12 PM   #81
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Theres more to do with it....

Serpent 811E Buggy Thread

Serpent 811E Buggy Thread

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Old 09-14-2012, 06:41 AM   #82
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You can easily gear up.
I installed a 22 pinion yesterday, and you can gear up even further.
Maybe you just have to take some material from the center diff's cover, but that's it. Pinions up to 26 and further should be possible. (didn't check).




I could go full throttle out of a corner, and it sometimes went into a drift, but never oversteered.
The Track we run at has a 230ft back straight, Gearing anything below 50mph feels too slow on the straight. To gear the Cobra GT to reach 60mph(what im currently geared for in my DM-1) With a 2050 on 4s would require roughly a 27T pinion on the stock 46T Spur if im reading the specs correctly that the internal gerar ratio of the Cobra is 3.38:1. That might be a lot to ask of the 2050 to do for 7 minutes. a 2650 to reach the same speed would require a 20T Pinion.

Being able to Mash the throttle out of turn is what im hoping for



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No body, no tires. Does come with 300k, 40k, 1k diff oil, and grease though. Pretty nice kit so far. I have the diffs assembled, center diff and motor mount installed and rear assembly installed. I already have some good ideas on how to modify the motor mount to gain the extra 4mm to fit the Tekin 2250kv truggy motor too. Will know more once I get done and can wrap my head around it.
What are the Stock/Default Diff fluid weights?
Did you have to shim the Front and rear diff's? if so how many shims did you use?

If you figure out a way to fit the 2250kv let us know =)
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Old 09-14-2012, 06:45 AM   #83
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Originally Posted by Voltron989 View Post
The Track we run at has a 230ft back straight, Gearing anything below 50mph feels too slow on the straight. To gear the Cobra GT to reach 60mph(what im currently geared for in my DM-1) With a 2050 on 4s would require roughly a 27T pinion on the stock 46T Spur if im reading the specs correctly that the internal gerar ratio of the Cobra is 3.38:1. That might be a lot to ask of the 2050 to do for 7 minutes. a 2650 to reach the same speed would require a 20T Pinion.
http://www.evilhobbyshop.com/Spur-gear-44T,PR-1199.html
http://www.serpent.com/product/600279/
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Old 09-14-2012, 07:10 AM   #84
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Originally Posted by Bhodi11 View Post
I was recently told by someone whom I consider to be pretty intelligent that the Castle motors problem with cogging etc is not the motor it is the MM esc. He runs a CC 2200kv with an RX8 and says it is perfectly smooth. I thought about picking up one of the NEU 2200kv and another RX8 to see how that works out. Initially im going to gear it high and run the 1900kv RX8 combo since the NEU has a 6 - 8 week lead time. I have given up on the idea of drag racing and would really rather bash and race around the track instead, way more fun.
I really dont see a reason to run a RX8 w/ a castle 2200 unless you have both on hand already and wanted to put something together.
At best it will behave like a RX8 with a T8 motor with the Sensor wire disconnected, It will start to roll out smooth and then will jerk/Jolt before taking off. Try it out with another car you have with a tekin combo and diconnect the sensor and roll out slow from a stop, you will notice what im talking about. Roll out will not be linear. you may be able to smooth it out a little using hotwire but i dont think you would be able to get rid of it completely. i dont know if its just me or what but it just seems like tekin motors are more quite then the Castle motors. even with the car off and rolling it back and forth the mesh seems so much more quite with the tekins. might just be me though.

I really wish MMM came Sensored, I have never delt with a company that has better customer service then Castle. Ive sent multiple MMM ESC's back to them and within 7-10 days ill have a replacement in my hands plus the MMM ESC's run much more cooler the the RX8's. I will never run another RX8 without an upgraded fan again
Tekin's customer service isnt bad either, I sent them a melted RX8 and they sent me a sealed BNIB RX8 but 120 days vs 1 year is a big difference and i dont know how friendly they will be if i have to send them back another melted ESC.
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Old 09-14-2012, 07:17 AM   #85
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Ok, If i replace the Stock 46T Spur with a 44T spur i can use a 26T pinion instead of 27T. Thats not much of a difference. The problem is to do 60mph with a 2050kv motor i would need to have a Final Gear ratio of 5.75:1 vs 7:77:1 need to reach 60mph with the 2650kv motor.
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Old 09-14-2012, 03:30 PM   #86
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Ok, If i replace the Stock 46T Spur with a 44T spur i can use a 26T pinion instead of 27T. Thats not much of a difference. The problem is to do 60mph with a 2050kv motor i would need to have a Final Gear ratio of 5.75:1 vs 7:77:1 need to reach 60mph with the 2650kv motor.
one problem at a time m8

now tell me what you need
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Old 09-14-2012, 05:21 PM   #87
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one problem at a time m8

now tell me what you need
Haha no problem man. Only wished the cobra fitted a 75mm motor so i can run a 2250 tekin truggy motor that's all
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Old 09-14-2012, 07:34 PM   #88
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Haha no problem man. Only wished the cobra fitted a 75mm motor so i can run a 2250 tekin truggy motor that's all
ooooh ok man... the difficult stuff we deliver immediately... the impossible you need to wait until tomorrow

but yes that is on the wish list trust me. if it can be realized thats a whole different story
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Old 09-15-2012, 01:08 AM   #89
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So what's the standard diff setup oil for these GT-e's?

If you run it with the 811-Be shocks and shock towers (e-buggy conversion), what shock oil will you use?

Regards!
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Old 09-15-2012, 05:22 AM   #90
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So what's the standard diff setup oil for these GT-e's?

If you run it with the 811-Be shocks and shock towers (e-buggy conversion), what shock oil will you use?

Regards!
40k rear, 300k center, 300k front. 1k shocks. That is the stock setup.

A couple notes from the build so far.

1. 2 shims (provided)for rear diff, 0 for front. Still not sure if it is correct though.
2. Dont use the 3 x 15mm screws for attaching front of steering top plate to bulkhead. Way too long, they barley go in all the way and you will strip them trying. Try 3 x 10 or 12mm. More than enough.
3. Going to talk to a friend tommorow, I think it may be possible to shave the motor mount down 4mm to fit the truggy tekin. It will be close but may be doable.
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SERPENT Cobra-GTe - Tekin T8 1900kv and RX8
SERPENT S-411 2.0 Team Orion Vortex-R Pro and VST Pro 13.5T
SERPENT S-411 2.0 Team Orion Vortex-R Pro and REVTECH Killshot 17.5T

Last edited by Bhodi11; 09-15-2012 at 09:28 AM.
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