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  #891  
Old 08-19-2013, 08:11 PM
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Default Re: RIPPERTON Electric track bike

And then there were 2
The R1 pack now supplies both 175v and 12v. The plug pack is on the battery to power the LiPo cooling fans and the Batrium BMS. so there is no interruption to the BMS while swapping the pack, also the cooling fans can remain running because at the end of a run is when the cells are the hottest and need cooling air.




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  #892  
Old 08-19-2013, 11:54 PM
midaztouch midaztouch is offline
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Default Re: RIPPERTON Electric track bike

RIP,

Those packs look great! What is the weight for one? No need for a gym membership. Just put a bar between them and you can do squats and bench!

Keep it Clean and Green!
Richie
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  #893  
Old 08-20-2013, 03:25 AM
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Originally Posted by midaztouch View Post
RIP,

Those packs look great! What is the weight for one? No need for a gym membership. Just put a bar between them and you can do squats and bench!

Keep it Clean and Green!
Richie
53kg each
Only problem now is the precharge relay loses its power source when the pack
Is extracted and activates the discharge funtion so by the time the fresh battery pack is being inserted ...BANG
The bike still needs its own 12v power source ie small battery
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  #894  
Old 08-20-2013, 03:31 AM
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Default Re: RIPPERTON Electric track bike

Can't you just incorporate a new precharge system into the second pack?

Looks like you will have no trouble keeping up with each practice session now eh?
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  #895  
Old 08-20-2013, 06:38 AM
midaztouch midaztouch is offline
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Default Re: RIPPERTON Electric track bike

How fast does it take to swap them out? I took a quick read about precharge. I always thought it was about voltage. Learned something new today... So what blows? Contactors, the high Surge of amps blows the capacitors or fuse . What are some possible options/solutions to resolve this problem?

Keep it Clean and Green
Richie

Last edited by midaztouch; 08-20-2013 at 09:56 AM.
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  #896  
Old 08-24-2013, 02:35 AM
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Looking at about 8 to 12 seconds for a pack swap.
Nothing actually blows there's just a big bang az the inrush current goes across the quick release blades but the spark creates carbon granules the can score the blade surface.

So todays racing was interesting. Had to cut it down to 4 laps cause Varleys battery wasn't up to 6 laps.
My new pack can do ok 6 laps with the bms light coming on.
But as we left the start line the Varley bike simply cut out exiting turn 2.
My bike went like a Rolls for 4 laps. Another 25 points thankyou.

Went to replace the RK synch chain but found it wasn't really worn.
A real testament to Japanese steel and engineering quality.
So now I have mathematically won the championship as long as I
come second in every race
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  #897  
Old 08-24-2013, 04:28 AM
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Default Re: RIPPERTON Electric track bike

How were your lap times on last year Dan?

Bit sad the Varley bike just stopped working. Are they on track for tomorrow's racing?
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  #898  
Old 08-25-2013, 12:00 AM
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How were your lap times on last year Dan?

Bit sad the Varley bike just stopped working. Are they on track for tomorrow's racing?
My best in Sundays race was 1.24.2 so that went down as new lap record.
8 seconds better than last year.
Jason did a 1.22 in qual so didn't count.
I chased him in Sundays race till the last corner and went in underneath
for the checkers . Another 25 points thanks .
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  #899  
Old 08-25-2013, 06:20 AM
midaztouch midaztouch is offline
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My best in Sundays race was 1.24.2 so that went down as new lap record.
8 seconds better than last year.
Jason did a 1.22 in qual so didn't count.
I chased him in Sundays race till the last corner and went in underneath
for the checkers . Another 25 points thanks .
Congrats,

Varley, being an EV company and having a lot of money, it must really shake the confidence of the investors and pride watching their bike break down and then losing to you... at the finish line!Lol

Your a bad man! Great job RIP! hahahahaha!

Keep it Clean and Green
Richie

Last edited by midaztouch; 08-25-2013 at 06:29 AM.
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  #900  
Old 08-26-2013, 02:46 AM
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Your a bad man
LOL I know, thanks.

Yeah they were in the same pits as us and you could see it on their faces they were pissed. Jason just hung his head as he came back in the trailer after Saturdays wreck, they went out for a couple of private shakedown laps after fixing the cutout and the thing was absolutely flying but Jason lost the front at about 150kmh going into the first left and it looked like a meteor ploughing into the Earth with a huge dust trail.
They got it fixed by the next day and Jason wasnt hurt.

Heres a video of Sundays dirty deed done dirt cheap.
http://www.youtube.com/watch?v=oRt-XnIlTH4
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