Serpent 811E Buggy Thread
#3692
Cobra E-Buggy Ready To Race 1/8 ElectricPowered The RTR version of the successfull high end Serpent 1/8 Cobra Buggy. Complete with DragonRC 2.4 radio, metal-gear servo, brushless motor, waterproof speedo, prepainted-precut body and premounted offroadtyres 4-wheel-drive, 3 geardiffs, 16mm bigbore shocks, aluminium shocktowers and chassis, easy radiobox, sideguards, low batteryboxes, rear wing. Fully upgradable with parts and options from the high end race-version. This super durable Buggy chassis allows a great entry in the racing scene, at a lower cost, and will make you finish your races! Cobra E-Buggy RTR
Looks nice, be nice to find out the price compaired with the RC8 RTR

Looks nice, be nice to find out the price compaired with the RC8 RTR

#3693
Guys running the Hobbywing 150A, how are you making it fit? I have ideas but am wondering what other people did.
I'm thinking of slitting the back of the ESC mount wall and running sensor wire straight thru and under the driveshaft..? That leaves the receiver and switch wires poking out the outside of the chassis which probably isn't a good idea either tho..
Suggestions?
EDIT: Never mind.. found pic earlier in thread of someone who did what I thought of doing.. I guess that will work.
I'm thinking of slitting the back of the ESC mount wall and running sensor wire straight thru and under the driveshaft..? That leaves the receiver and switch wires poking out the outside of the chassis which probably isn't a good idea either tho..
Suggestions?
EDIT: Never mind.. found pic earlier in thread of someone who did what I thought of doing.. I guess that will work.
#3694
Tech Regular
iTrader: (24)
Joined: May 2013
Posts: 469
OMG, what a nightmare. For the life of me I can not get this gearbox to work smoothly. I have gone with 3 shims, 1 shim, no shims, 1 screw out on the driveshaft bearing... everything.
it works smoothly (the drive shaft is smooth and the driveshaft with the diff on top) with only one side of the gearbox used. However, when i put the other side of the gearbox on with the shock tower, it starts to bind. As i tighten the screws to normal tightness, the driveshaft is "crunchy" and feels hard to turn. If I loosen the screws to un acceptable levels, it rolls ok, but I really dont s
ee how this is normal guys.
I am beating my head against the wall trying to get this to work. I have read every post on this forum and nothing seems to help... I have no answers... ugh!!!
it works smoothly (the drive shaft is smooth and the driveshaft with the diff on top) with only one side of the gearbox used. However, when i put the other side of the gearbox on with the shock tower, it starts to bind. As i tighten the screws to normal tightness, the driveshaft is "crunchy" and feels hard to turn. If I loosen the screws to un acceptable levels, it rolls ok, but I really dont s
ee how this is normal guys.I am beating my head against the wall trying to get this to work. I have read every post on this forum and nothing seems to help... I have no answers... ugh!!!
#3695
Tech Addict
iTrader: (5)
Joined: Jan 2003
Posts: 569
OMG, what a nightmare. For the life of me I can not get this gearbox to work smoothly. I have gone with 3 shims, 1 shim, no shims, 1 screw out on the driveshaft bearing... everything.
it works smoothly (the drive shaft is smooth and the driveshaft with the diff on top) with only one side of the gearbox used. However, when i put the other side of the gearbox on with the shock tower, it starts to bind. As i tighten the screws to normal tightness, the driveshaft is "crunchy" and feels hard to turn. If I loosen the screws to un acceptable levels, it rolls ok, but I really dont s
ee how this is normal guys.
I am beating my head against the wall trying to get this to work. I have read every post on this forum and nothing seems to help... I have no answers... ugh!!!
it works smoothly (the drive shaft is smooth and the driveshaft with the diff on top) with only one side of the gearbox used. However, when i put the other side of the gearbox on with the shock tower, it starts to bind. As i tighten the screws to normal tightness, the driveshaft is "crunchy" and feels hard to turn. If I loosen the screws to un acceptable levels, it rolls ok, but I really dont s
ee how this is normal guys.I am beating my head against the wall trying to get this to work. I have read every post on this forum and nothing seems to help... I have no answers... ugh!!!

#3696
Tech Regular
iTrader: (24)
Joined: May 2013
Posts: 469
both my diffs are built properly... the drive train/gearbox in the front is the problem. when I assemble the gearbox, it binds... badly... no matter what the shim or screw situation is. I have tried every conceivable combo and nothing works.
the rear gearbox is smooth... rolls fine, but the front binds.
The only thing I havent done is taken my dremel tool and grinded away plastic.
the rear gearbox is smooth... rolls fine, but the front binds.
The only thing I havent done is taken my dremel tool and grinded away plastic.
#3699
Tech Addict
iTrader: (5)
Joined: Jan 2003
Posts: 569
both my diffs are built properly... the drive train/gearbox in the front is the problem. when I assemble the gearbox, it binds... badly... no matter what the shim or screw situation is. I have tried every conceivable combo and nothing works.
the rear gearbox is smooth... rolls fine, but the front binds.
The only thing I havent done is taken my dremel tool and grinded away plastic.
the rear gearbox is smooth... rolls fine, but the front binds.
The only thing I havent done is taken my dremel tool and grinded away plastic.
I just removed the shims, made sure nothing was overtight, and ran it while keeping an eye on motor/esc temps. after about 10 min it was fine. now with a little over an hour on it, it is smooth as butter.
tight until breakin is a good thing, that means it will last once it wears in properly. sloppy before breakin makes for a super sloppy buggy.
I was able to turn the front driveshaft with my fingers once it was installed, but barely, it was difficult. now it's smooth.
#3701
Tech Regular
iTrader: (24)
Joined: May 2013
Posts: 469
If you look back a couple pages to where i built my kit i had the same issue. Ran a couple packs through it and it smoothed out nicely.
I just removed the shims, made sure nothing was overtight, and ran it while keeping an eye on motor/esc temps. after about 10 min it was fine. now with a little over an hour on it, it is smooth as butter.
tight until breakin is a good thing, that means it will last once it wears in properly. sloppy before breakin makes for a super sloppy buggy.
I was able to turn the front driveshaft with my fingers once it was installed, but barely, it was difficult. now it's smooth.
I just removed the shims, made sure nothing was overtight, and ran it while keeping an eye on motor/esc temps. after about 10 min it was fine. now with a little over an hour on it, it is smooth as butter.
tight until breakin is a good thing, that means it will last once it wears in properly. sloppy before breakin makes for a super sloppy buggy.
I was able to turn the front driveshaft with my fingers once it was installed, but barely, it was difficult. now it's smooth.
I just dont want to mess anything up on it.
#3702
Tech Addict
iTrader: (5)
Joined: Jan 2003
Posts: 569
I would say you are good to go
#3703
Joined: Jan 2013
Posts: 2,138
From: Virginia
I think car has way more steering than 8.2, less prone to traction rolling and 10X more durable if that helps .... but most of the time u going to be one of very few serpents at the track so setup and parts help is hard to find



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