R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Oval, Larger Scales and More

Reply
 
Thread Tools Search this Thread
Old 09-13-2014, 03:57 PM   #1201
Tech Master
 
WildManDriving's Avatar
 
Join Date: Sep 2008
Location: Radelaide
Posts: 1,410
Trader Rating: 27 (100%+)
Default

Quote:
Originally Posted by YoDog View Post
My 1/8th scale pan car prototype finally made it to the track!
Still working on some design changes but got tired of looking at an unfinished car so I finished what I have and got to drive it around.
Considering it has never been driven before, I was quite pleased with the initial outcome. Take a look at the pics and enjoy...
Hey, did you make or what car are the wheel hubs/diff from?

Maybe less of a dream then first thought,
M.Ellis
__________________
. . . - - - Now enjoying Proline tyres - - - . . .
Scale race models: RCHobbyzone, Mugen, Reds, Xpert, Contact, Neo+.
Toy cars: Xray T4'15, Hudy, Nosram/Muchmore, Protoform.
No longer defined as a Off or On-road racer, but simply a RC enthusiast.
WildManDriving is offline   Reply With Quote
Old 09-15-2014, 04:03 AM   #1202
M7H
Tech Elite
 
M7H's Avatar
 
Join Date: Dec 2004
Location: The Netherlands
Posts: 2,193
Default

Quote:
Originally Posted by cosmokitten View Post
Wow!

With both options on tap, you can't go wrong with the 977e.
Waiting impatiently for availability.
Quote:
Originally Posted by James73 View Post
When will the release date be for the Serpent electric 1/8?
http://serpent.com/product/904002/

__________________
Serpent
M7H is offline   Reply With Quote
Old 09-16-2014, 11:02 AM   #1203
Tech Master
 
YoDog's Avatar
 
Join Date: Aug 2006
Location: Lompoc, Ca.
Posts: 1,637
Trader Rating: 26 (100%+)
Default

Quote:
Originally Posted by WildManDriving View Post
Hey, did you make or what car are the wheel hubs/diff from?

Maybe less of a dream then first thought,
M.Ellis
I made all those parts.
it's a 10mm carbon axle with a standard 48p spur ball diff arrangement. There are few parts on this car that are off the shelf.
__________________
R-Factor RC Products
AE- TC6.1WC, TC6.2, RSD6, B5M
CRC- GenX10 WGT & Pro10 Prototype, WTF1, Xti 1/12
R-Factor RC- TC4-R, P8 PanCar
Not as Fast as I want to be but too old to Whine about it... 8-)
YoDog is offline   Reply With Quote
Old 10-05-2014, 05:48 PM   #1204
Tech Initiate
 
fab888's Avatar
 
Join Date: Aug 2012
Location: HongKong
Posts: 23
Default

is there anybody driving this Serpent 977e ?
looking for advices for LIPO and Engine as I am very new to Electric , coming from GP
looks like Lipo3S is the battery to order
thxs
fab888 is offline   Reply With Quote
Old 10-06-2014, 03:09 AM   #1205
Tech Regular
 
Join Date: Nov 2010
Posts: 310
Default

Id like to know what serpent recommends for batteries.
need to look for more than just voltage and capacity ok..the C rating is also important.. as a lot of 3S packs have too low such as 20-35C...they prob wont be able deliver enough amps. eg 35C X capacity in Ah = amps.
I think I read 1900kV for motor somewhere, i would agree with that. for 6S.

but just to give you some idea....
currently im using a 966E on 4S 5600mAh 65C and a 2650kV motor. and its going very well.

just using a little math then for 6S to get same performance would be 3750mAh with a 1767kV motor. but aim a bit higher to match nitro for top speed...i think thats the point of going 6S although the response and torque at lower speed is always better with electric...be gentle on the throttle if youre used to nitro.
jeff_78 is offline   Reply With Quote
Old 10-06-2014, 04:16 AM   #1206
M7H
Tech Elite
 
M7H's Avatar
 
Join Date: Dec 2004
Location: The Netherlands
Posts: 2,193
Default

The problem with these C ratings is that some of them are not really accurate.
I tested my 966e, converted to suit 6S lipo, and used 6S rhino's of 25-35C, they do the job pretty well!

On 6S you don't need the highest C ratings, because you already have the higher voltage available of 6S.

I tested the 977e, with 2x LRP 4500 / 3S / 40-80C lipo's.
The good thing about them, is the weight, which is 300gr each, so 600gr for 2 lipo's!

This combined with a 1900kv motor, and then a 16 and 17T pinion, will work best in my opinion.
__________________
Serpent
M7H is offline   Reply With Quote
Old 10-06-2014, 04:21 AM   #1207
Tech Regular
 
Join Date: Nov 2010
Posts: 310
Default

that is true i used 65-80c on 4S i was expecting 40-50 for 6 but...what was the capacity of those 35c packs you used?
jeff_78 is offline   Reply With Quote
Old 10-06-2014, 05:39 AM   #1208
M7H
Tech Elite
 
M7H's Avatar
 
Join Date: Dec 2004
Location: The Netherlands
Posts: 2,193
Default

Capacity was 4000mAh.
But this was not enough to get 5 min runtimes.
A later batch of the same Lipo's where a little bigger, and although stated as 4000mAh, after a recharge, I could put back 4300mAh+ in them. Where in the first Lipo I could only put back 3800mAh (which is what you expect from a 4000mAh Lipo)

Please note that these numbers of mAh you can put back in a lipo, doesn't take into account the loss of mA you have during charging. But they do give you a figure about what is going on. Atleast, if you always charge your pack on the same charger.
__________________
Serpent
M7H is offline   Reply With Quote
Old 10-06-2014, 05:42 AM   #1209
Tech Regular
 
Join Date: Nov 2010
Posts: 310
Default

thanks M7H just one other thing what is the max length of battey to fit in 977E?
jeff_78 is offline   Reply With Quote
Old 10-06-2014, 06:16 AM   #1210
M7H
Tech Elite
 
M7H's Avatar
 
Join Date: Dec 2004
Location: The Netherlands
Posts: 2,193
Default

http://serpent.com/news/13781/Design...EP-onroad.html

"Each battery can be 150mm x 50mm x 27mm. Hardcase 3S Lipos fit easy"

But be carefull with softcase lipo's, because the wires take some serious space! (depending ofcourse, where they leave the pack)
__________________
Serpent
M7H is offline   Reply With Quote
Old 10-08-2014, 05:24 AM   #1211
M7H
Tech Elite
 
M7H's Avatar
 
Join Date: Dec 2004
Location: The Netherlands
Posts: 2,193
Default

__________________
Serpent
M7H is offline   Reply With Quote
Old 10-08-2014, 06:24 AM   #1212
Tech Apprentice
 
cosmokitten's Avatar
 
Join Date: Jan 2014
Posts: 56
Default

Quote:
Originally Posted by M7H View Post
Please provide link for where to get these LRP 3S lipos.

Based on my limited search, they are either not avail and/or out of stock everywhere...definitely not avail in America.

I found other options but with Deans plugs. Trinity Titanium (50/90C) also just released new 3S wolfpacks (35/65C).

If we can't get our hands on the LRP, any other batt recommendations? I found many other options only to realize that many packs are slightly too large (Revtech 100C for example). My search was limited to 3S packs.

appreciate, thanks!
cosmokitten is offline   Reply With Quote
Old 10-08-2014, 06:44 AM   #1213
Tech Regular
 
Join Date: Nov 2010
Posts: 310
Default

ive ordered 3S packs from hobby king. 3s 4000mah 40-80c and 320g each i think..138MM long. they are turnigy nano tech packs...these will add up to 88 Wh; slighly more than i have in 966e right now. so i can go slightly faster...
they are about $40 each.
pretty sure they have 4500's too though.

I wasnt going to recommend as i havent obviously got them yet but i always work this stuff out and it usually works on track for me. i wont be pushing it past 110km/h maybe 107ish. we do have a long straight, track is designed for 1/8th but im not a "throttle jiggler" and i dont "nail" it. and lap times are what matters so need a good balance of weight and power available.
Ill let you know how it goes when i get it running.

Last edited by jeff_78; 10-08-2014 at 06:57 AM.
jeff_78 is offline   Reply With Quote
Old 10-08-2014, 07:48 AM   #1214
M7H
Tech Elite
 
M7H's Avatar
 
Join Date: Dec 2004
Location: The Netherlands
Posts: 2,193
Default

I also have nanotechs from them, 4250mAh I believe, but in general a hardcase is much easier and cleaner in wiring.....

But never mind, if they work, they work!
__________________
Serpent
M7H is offline   Reply With Quote
Old 10-08-2014, 07:52 AM   #1215
M7H
Tech Elite
 
M7H's Avatar
 
Join Date: Dec 2004
Location: The Netherlands
Posts: 2,193
Default

Quote:
Originally Posted by cosmokitten View Post
Please provide link for where to get these LRP 3S lipos.

Based on my limited search, they are either not avail and/or out of stock everywhere...definitely not avail in America.
I think you can get them at any shop which can deliver LRP. But I also can imagine they don't have them on stock, so maybe just send them an email?
__________________
Serpent
M7H is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
WTT Nitro onroad 4 electric onroad rswartz R/C Items: Wanted to Buy 0 02-16-2008 05:22 AM
WTT: 1/10th scale electric offroad for onroad... M2_Driver R/C Items: For Sale/Trade 7 10-22-2007 06:48 AM
Electric heli and 1/5 scale onroad F/S... Nitrobuzzard R/C Items: For Sale/Trade 3 08-18-2007 07:41 PM
1/8 electric onroad?? Saber186 Electric On-Road 2 04-22-2006 10:25 AM
I need electric Onroad xxxssportracer R/C Items: Wanted to Buy 5 05-20-2003 04:00 PM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 01:48 AM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net