Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Blog NEW Galleries NEW FAQ Contact About Impressum
It is currently Sat Dec 03, 2016 4:56 pm
Recently the board software has been updated and there are some known bugs/failures:
- Avatars are currently not being displayed ✔ FIXED
- Tapatalk connection is currently broken ✔ FIXED
- Avatars cannot be uploaded ✔ FIXED

Please note that we will soon do some changes in WW board template design in case to get a fully mobile/desktop responsiveness board!
If you find more errors please post it here: http://weightweenies.starbike.com/forum/viewtopic.php?f=7&t=139062


All times are UTC+01:00





Post new topic  Reply to topic  [ 204 posts ]  Go to page Previous 110 11 12 13 14 Next
Author Message
PostPosted: Sun Jul 20, 2014 8:25 pm 
Offline

Joined: Fri Dec 23, 2011 10:43 pm
Posts: 3
I just replaced both batteries in my sram s975 SRM, and everything seemed to go smoothly. The zero offset was right around where it had been before the thing ran low on battery, so it seemed alright. I took it out today, and 95% of the time, everything matched the numbers I was getting with my other SRM. But every once-in-a-while, the power numbers would about double for a bit (5-6 seconds), and then go below what I knew I was doing, and finally settle back around where I expected it. When this happened, I would go re-zero it, and the ZO was almost exactly what it had been before. Normally, I would blame this on the garmin trying to auto-zero it when it shouldn't, but that never happened nearly this often. On longer stretches of around constant power, this happened a lot less often, it seemed more frequent with stop-and-go.
I'm wondering if anyone's seen something like this after replacing batteries?

EDIT: Here's a screencap of what happens. The cadence data is fine, but the power spikes up for around 2 seconds, and then down to 0 for one, and then back to normal.
Image


Top
   
Posted: Sun Jul 20, 2014 8:25 pm 


Top
   
 
PostPosted: Tue May 05, 2015 2:32 pm 
Offline
User avatar

Joined: Thu Sep 21, 2006 8:57 pm
Posts: 4319
Location: Vicenza
Hey guys,
I've got a friend who needs to replace the battery on his PCV (see picture attached) and I told him he can use a normal battery but he's worried cause there's 3 wires; anyone can help?
Thanks in advance!

Image

_________________
My current ride


Top
   
PostPosted: Tue May 05, 2015 2:51 pm 
Offline

Joined: Mon Oct 10, 2005 9:23 pm
Posts: 219
It looks like they added a diode. I wonder if they also severed a trace on the PCB.

I've always just used a cylindrical CR2-sized lithium ion battery with a round PCM at its base. It fits a lot better and gives you a lot more battery life. I only connected two wires, the red and black.

I guess if it was me I would desolder the diode and try with just the black and red wires. If it doesn't charge then put the diode back.


Top
   
PostPosted: Tue May 05, 2015 9:00 pm 
Offline

Joined: Wed Jun 09, 2010 10:44 am
Posts: 293
I had 2 PCV's. One had the Diode, one didn't, so don't suppose its too important.

My guess is it's probably there to stop the battery discharging back into the charger or wiring harness in the event of a short circuit.

Do what Squint says, its what I did.

_________________
...


Top
   
PostPosted: Sat Aug 22, 2015 1:11 pm 
Offline

Joined: Sat Aug 22, 2015 12:52 pm
Posts: 1
Hello to all,
are an athlete handbike Italian, I would like to replace the battery on my SRM handbike but can not open it, there are no cracks of any kind. can anyone help me?


Top
   
PostPosted: Mon Aug 24, 2015 3:38 pm 
Offline
User avatar

Joined: Fri Jul 23, 2004 8:24 pm
Posts: 1919
Location: Houston, Texas
Not sure exactly when SRM changed the design or if this applies to the Dura Ace or Campagnolo SRMs, but when I changed the battery on my early 2013 Hollowgram SRM last month, I noticed two changes from the earlier models. First, the removable cover that protects the PCB had been moved to the outboard face of the spider, not the inboard/torque ringside. Second, although I already had the old style Keeper LTC-7PN-S4 batteries on had, the ones that I found installed were from a different manufacturer - Harris AN/PRC-152 HUB Battery lithium LTC-7PN-S4 w/ leads & plug) - and would not have required soldering.

Image

_________________
Michael - The Anaerobic Threshold is neither...


Top
   
PostPosted: Tue Aug 25, 2015 4:03 am 
Offline

Joined: Mon Apr 21, 2014 9:17 pm
Posts: 158
Location: Belo Horizonte, Brazil
Maybe a little overtopic but my ROTOR 3D+ SRM (still with plenty battery life) has a fractured locking. Zero offset is normal and the readings are stable. I get a click from this part whenever I stand up on the pedals. I have spare lockrings, Loctite, lockring tool, vise, torquimeter and so on. I'm afraid to loose the factory calibration (don't have the tools to perform calibration here). Should I exchange the lockring myself? If so, what's the recommended torque? Thanks


Top
   
PostPosted: Sat Sep 05, 2015 7:40 am 
Offline

Joined: Sun Jan 16, 2005 1:52 pm
Posts: 514
Location: Switzerland
Does anyone know which battery being used in the spider of a dura ace 9000 srm? I get low readings in the rain/after the rain, cadence reading is ok, or could be the zero offset that much off?


Top
   
PostPosted: Sun Sep 06, 2015 1:58 am 
Offline

Joined: Wed Oct 24, 2007 6:56 pm
Posts: 180
rma wrote:
Maybe a little overtopic but my ROTOR 3D+ SRM (still with plenty battery life) has a fractured locking. Zero offset is normal and the readings are stable. I get a click from this part whenever I stand up on the pedals. I have spare lockrings, Loctite, lockring tool, vise, torquimeter and so on. I'm afraid to loose the factory calibration (don't have the tools to perform calibration here). Should I exchange the lockring myself? If so, what's the recommended torque? Thanks


I have a 2012 Campy SRM, and reed switches are sticked with mounting tape to the mainboard. If they get loose, they can click every time the magnet pass close to the switch.


Top
   
PostPosted: Sun Sep 13, 2015 11:54 am 
Offline

Joined: Sun Jan 16, 2005 1:52 pm
Posts: 514
Location: Switzerland
Since I got some problems with my SRM Dura Ace 9000 I opened it up to have a closer look. It's running with different cells than the srm's I had or know,even though the cells item number is on the rear side and since the battery is sort of glued in I'm still reluctant to take it out to see the model of the cell and it's capacity.
Opposed to most SRM Cranks the DA9000 version has the lid on the outside, in order to access the electronics, the crank arm will have to be taken off and there's a small groove to place a screw driver to pop the cover out.
My problem is-while riding in the rain, after some time the power reads zero, only if I push hard I get some numbers (approx. a fifth of the what it should read), had this now for the second time-but always when riding in the rain, I noticed that the zero-offset is "zero" when checking while riding-(coasting), and if in "manual" mode it can't be set as it remains zero
When dry it works perfectly again. I noticed that this SRM crank has a small hole in the front just under the crank arm close to the center, can only be seen when the crank arm is off, and on the inside (other side of the hole)-there's a sort of membrane (White circle on the picure of about 10mm's). Guess this is to regulate humidity like the holes in bike frames. Now I'm wondering whether this causes to enter humidity while riding in the rain.
I will try to do some rain sessions with the hole taped off and see what happens.


Attachments:
Foto0473-1.jpg
Foto0473-1.jpg [ 9.36 KiB | Viewed 722 times ]
Foto0475-1.jpg
Foto0475-1.jpg [ 12.45 KiB | Viewed 722 times ]
Foto0479-1.jpg
Foto0479-1.jpg [ 9.11 KiB | Viewed 722 times ]
Top
   
PostPosted: Wed Nov 04, 2015 6:58 pm 
Offline
User avatar

Joined: Fri Jul 23, 2004 8:24 pm
Posts: 1919
Location: Houston, Texas
el condor wrote:
It's running with different cells than the srm's I had or know

Those are Eve ER14250 1/2AA 3.6v 1200mah batteries with tabs welded on each terminal that have damn small 32awg wires soldered to the tabs on the battery and a JST SH 2-pin nano connector that plugs into matching plugs on the PCB. Two guesses why/how I know that? :oops:

el condor wrote:
I noticed that this SRM crank has a small hole in the front just under the crank arm close to the center

It sounds to me like the inner or outer o-rings which seal the cover from the elements are worn and need to be replaced, but my SRM is presently on the workbench with the cover off, but I did not notice a hole like that in the outer cover so I will have to re-check.

_________________
Michael - The Anaerobic Threshold is neither...


Top
   
PostPosted: Thu Apr 07, 2016 3:13 am 
Offline
User avatar

Joined: Tue May 30, 2006 10:38 pm
Posts: 1285
Location: NorCal
Does anyone have pics of a D/A 7950 SRM with the cap off? I can't sort out how to get mine off.

_________________
Have you ever wondered if there was more to life, other than being really, really, ridiculously good looking?


Top
   
PostPosted: Thu Apr 07, 2016 4:39 am 
Offline
User avatar

Joined: Fri Jul 23, 2004 8:24 pm
Posts: 1919
Location: Houston, Texas
I would think it would require removing the chainrings then un-screwing the 5 flat head screws which should allow you to lever a sharp edged instrument into the split in the torque ring to remove the cover:

Image

_________________
Michael - The Anaerobic Threshold is neither...


Top
   
PostPosted: Fri Apr 08, 2016 12:21 am 
Offline
User avatar

Joined: Tue May 30, 2006 10:38 pm
Posts: 1285
Location: NorCal
This is mine. No screws and no spot to easily put the screwdriver in there. Any ideas?

Image

Image

_________________
Have you ever wondered if there was more to life, other than being really, really, ridiculously good looking?


Top
   
Posted: Fri Apr 08, 2016 12:21 am 


Top
   
 
PostPosted: Fri Apr 08, 2016 12:50 am 
Offline

Joined: Sat Feb 06, 2010 2:55 am
Posts: 82
Location: USA
Some were glued together, my 1x SRM on fat bike doesn't have screws and is glued on per SRM


Top
   
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 204 posts ]  Go to page Previous 110 11 12 13 14 Next

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. Attachment(s) Home Made Aero Spin Down Test of 2 Top Wheels

[ Go to page: 13 4 5 6 7 ]

in Road

cyclespeed

91

3072

Thu Sep 01, 2016 12:22 am

cyclespeed View the latest post

There are no new unread posts for this topic. di2 battery holder for Pina F8

in Road

fh8425

4

319

Tue Jul 12, 2016 12:18 am

fh8425 View the latest post

There are no new unread posts for this topic. Di2 battery voltage after charging

in Road

Zzyzxx71

0

170

Thu Aug 04, 2016 2:42 pm

Zzyzxx71 View the latest post

There are no new unread posts for this topic. stages battery life?

in Road

Delorre

7

506

Fri Oct 07, 2016 3:47 am

dmulligan View the latest post

There are no new unread posts for this topic. Shimano Di2 BT-DN110 Internal Battery

in Road

Timujin

4

598

Fri Sep 16, 2016 2:17 am

goodboyr View the latest post


All times are UTC+01:00


Who is online

Users browsing this forum: Bing [Bot], kasperkls02, NYCPrynne, Rascal, rgamble, tommasini and 22 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Limited