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Old 01-11-2011, 04:55 AM   #3316
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Originally Posted by lil-bump View Post
I thought a fully charged LIFE is about 6.6 vdc you should not need a regulator with a Life. A fully charged NIMH can reach almost 7vdc. If your running a Lipo(8.4vdc) then I would use a regulator.
To be exact:
The voltage cut-off for a 2S LiFe is 7.2V. When finished charging the voltage quickly drops to 6.6 ~ 6.8V.
A fresh NiMh pack, can even go over 7V.
Now you might think that your then better of with a NiMh pack, but I did a check with an IP 1600mAh NiMh an an IP 1450mAh LiFe, both charged and put under load of 1A.
The first 5 minutes, the NiMh had a slight advantage in voltage level, but after 10 minutes, the voltage level of the NiMh already dropped below the level of the LiFe, which for a very long time had a continuous level of about 6.4V....

Because LiFe has a higher output voltage compared to NiMh, you will also have better runtime with it, compared to a same capacity NiMh pack.
Because of the lower internal resistance of LiFe, you will also have more juice left for your steering servo, while under breaking... (that's the theorie, but if it will make you faster.... )
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Old 01-11-2011, 06:10 AM   #3317
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Originally Posted by QuiXoTic_NL View Post
You'll want to look into the drive ratio. Like all touring cars, the 733 is designed to be run with a split (front tires smaller than rear tires). When running rubber, the front tires will be the same diameter as the rear tires. You will have to play with the pulleys to get a good, close to 1:1 drive ratio.
Into that, we looked around and could not find different pulleys (size options) for the 733. And they told me the 720's ones can't be used. Is that right, or can it be adapted? (I don't hae a 733 ... yet)
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Old 01-11-2011, 06:37 AM   #3318
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Originally Posted by Rawz View Post
Into that, we looked around and could not find different pulleys (size options) for the 733. And they told me the 720's ones can't be used. Is that right, or can it be adapted? (I don't hae a 733 ... yet)
I don't have a 733 either (yet, waiting for a 2011 kit), and I'm not racing rubber, so I haven't looked into this either. You could go to http://www.3hobby.net. This is where the UK race crowd hangs out, and they do have a rubber series on a national level. I'm sure that, if running a 733 on rubber is feasible, they will have it figured out.
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Old 01-11-2011, 11:16 AM   #3319
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Into that, we looked around and could not find different pulleys (size options) for the 733. And they told me the 720's ones can't be used. Is that right, or can it be adapted? (I don't hae a 733 ... yet)
pulleys from 720 can not be used on the 733. 733 uses pins instead of
grub screws for holding pulleys on shafts.
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Old 01-12-2011, 11:41 PM   #3320
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Need advice from the serpent Gurus here, i install the DLS, yes the back stability improve alot, however i lost alot of steering as compare to wat i used to have..... pls help me to regain some steering, is it correct if i make the castor more upright to regain steering and using a softer spring infront??? and also to reduce the front shock tower lower as my shock tower position is the most uprite position now, will tat help too????? i am lost now, i need alot of steering make tight coners. tks so much....
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Old 01-13-2011, 12:37 AM   #3321
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Originally Posted by eldwin65 View Post
Need advice from the serpent Gurus here, i install the DLS, yes the back stability improve alot, however i lost alot of steering as compare to wat i used to have..... pls help me to regain some steering, is it correct if i make the castor more upright to regain steering and using a softer spring infront??? and also to reduce the front shock tower lower as my shock tower position is the most uprite position now, will tat help too????? i am lost now, i need alot of steering make tight coners. tks so much....
Do you have the rear sway bar installed or off?
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Old 01-13-2011, 03:31 AM   #3322
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Quote:
Originally Posted by eldwin65 View Post
Need advice from the serpent Gurus here, i install the DLS, yes the back stability improve alot, however i lost alot of steering as compare to wat i used to have..... pls help me to regain some steering, is it correct if i make the castor more upright to regain steering and using a softer spring infront??? and also to reduce the front shock tower lower as my shock tower position is the most uprite position now, will tat help too????? i am lost now, i need alot of steering make tight coners. tks so much....
Things you can try to regain steering;
- reduce rear toe-in to 1,5 degr. or even less (will get you more speed)
- harder spring at the rear
- softerspring at the front
- harder diffoil at the rear (will get you more on power turn out)
- more droop at the rear (alot more)
- less droop at the front
- harder tire at the rear
- softer tire at the front
- rear shocks harder (higher (harder) oil)
- front shockoil harder (harder for initial turn in tight corner)
- more upright caster at the front (initial turn in for tight corner)
- rear schocks more vertical
- front shocks more horizontal (will redice initial turn-in)

Or remove the DLS and get racing the proper way

Wish you the best, greetz JW
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Old 01-13-2011, 06:45 AM   #3323
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Originally Posted by Rawz View Post
Into that, we looked around and could not find different pulleys (size options) for the 733. And they told me the 720's ones can't be used. Is that right, or can it be adapted? (I don't hae a 733 ... yet)
The 720 side pulleys won't fit with out some grinding. You will need to grind a flat spot on the shaft so the grub screw can lock down on. I know for a fact that it works for the 2 speed shaft pulley, but not certain for the front pulley.
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Old 01-13-2011, 07:04 AM   #3324
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Default serpent DLS

I running without the anti roll bar behind
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Old 01-13-2011, 07:11 AM   #3325
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Originally Posted by eldwin65 View Post
I running without the anti roll bar behind
First put the ARB back on.
Second try raising the rear rollcentre by changing to the high or second from the top rear lower rollcentre insert. Also reset the downstops after doing this.
This is a pretty good combination, at least that was my experience.
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Old 01-14-2011, 04:54 AM   #3326
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Quote:
Originally Posted by eldwin65 View Post
Need advice from the serpent Gurus here, i install the DLS, yes the back stability improve alot, however i lost alot of steering as compare to wat i used to have..... pls help me to regain some steering, is it correct if i make the castor more upright to regain steering and using a softer spring infront??? and also to reduce the front shock tower lower as my shock tower position is the most uprite position now, will tat help too????? i am lost now, i need alot of steering make tight coners. tks so much....
If you would pot the complete setup we can advise you better, but Djewie's comments are steps you can take regardless.
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Old 01-14-2011, 07:33 AM   #3327
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Default serpent DLS

thankyou to all, i have gotten the steering bac, i am happy without using the anti roll bar.... mine car can turn tight turns now. tks soo much,,, relieve
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Old 01-15-2011, 08:31 AM   #3328
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Originally Posted by djiewie View Post
Things you can try to regain steering;
- reduce rear toe-in to 1,5 degr. or even less (will get you more speed)
- harder spring at the rear
- softerspring at the front
- harder diffoil at the rear (will get you more on power turn out)
- more droop at the rear (alot more)
- less droop at the front
- harder tire at the rear
- softer tire at the front
- rear shocks harder (higher (harder) oil)
- front shockoil harder (harder for initial turn in tight corner)
- more upright caster at the front (initial turn in for tight corner)
- rear schocks more vertical
- front shocks more horizontal (will redice initial turn-in)

Or remove the DLS and get racing the proper way

Wish you the best, greetz JW
hahaha, interested in a 733? Do it! Then you will win the Nomac 2011!!
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Old 01-16-2011, 06:35 AM   #3329
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Is anyone interested in a BNIB Serpent 733 that i won in a lucky draw? Please pm me your offers if anyone is interested.

International shipping from Asia would be around around 2-3 weeks and will cost around $40usd.

Thanks!
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Old 01-16-2011, 06:36 AM   #3330
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hello guys, one question

on 720 days, i used to apply one droop of one-way lube on my owb
on a regular basis. Never had an owb failure at last 4 years.

On the 733, it seems to me that the bearing comes alot tighter to the shaft than the one on the 720, is it a different part number? (its the same silver color and black inside not red)
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