Built the best engine cooling system...again
Banned
Joined: Apr 2012
Posts: 648
Likes: 9
From: WV
So this is a normal occurrence? Just a bit worried, because I left the bike to go to lunch and just decided to go back out after lunch to bring my helmet inside(at my Father's place) and the fans were still running - not sure how much drain is going on with the battery?
Based on the properties of a Big Crank Battery, 26 Ah, and 2.2 amps draw of the fans, and the calculator link below, theoretically it will take 4.92 hours to drain a battery
http://ep.yimg.com/ty/cdn/sports-imp...drainCalc.html
I don't know how accurate this calculator is, I don't have real world results of how long the fans have to run before the bike wont start, even if I did have results they would not reasonably represent all bikes due to the varied health conditions of charging systems.
I've had reports of the original fans, 1.6 amp total draw, being left on during a 12 hour work shift and the bike still started, and I've had reports of the new fans, 2.2 amps total draw, being left on for 4 hours and the bike wouldn't start.
I can't guarantee that a thermal switch will never fail, I can guarantee I will replace it if it does fail.
If somebody wants a bulletproof no fail starting system I would suggest a battery buddy type device that cuts all draw on the battery before it gets too low to start, or add a time relay to the FCS circuit.
Bottom line a new thermal switch will probably take care of your problem. Again I don't have a database to cross reference forum screen names with real names so contact me via email with your current shipping info and I'll send you one.
Jason
Last edited by WARDSPARTSWERKS; Jun 16, 2014 at 06:49 PM.
Tourer
Joined: Aug 2006
Posts: 412
Likes: 28
From:
fans
I've had the fans installed since last summer but I did not install the switch just so I could control when they go on and off. Common sense pretty dictates for me when to turn them on. Traffic jam ahead? On go the fans. They work fantastic! If there was only one small complaint it would be riding over a rough road causes them to bang the cylinder heads sometimes because of the rubber mount but it's not a big concern. I'm thinking of ordering stiffer isolators from McMaster Carr and experiment. I'd space them out but there is not a lot of thread left on the rubber isolator to make me feel comfortable. Maybe later this summer I'll do the switch to see how often they would cycle on and off.
Thanks for an excellent product. I HIGHLY recommend these fans and I have no ties or affiliation to the company at all.
Thanks for an excellent product. I HIGHLY recommend these fans and I have no ties or affiliation to the company at all.
Road Master
Joined: Dec 2013
Posts: 1,072
Likes: 212
From: Boston,Ma
Yup, Jason a real stand up guy and will address any issue you have
If there was only one small complaint it would be riding over a rough road causes them to bang the cylinder heads sometimes because of the rubber mount but it's not a big concern. I'm thinking of ordering stiffer isolators from McMaster Carr and experiment. I'd space them out but there is not a lot of thread left on the rubber isolator to make me feel comfortable.
Elite HDF Member
Joined: Sep 2012
Posts: 3,791
Likes: 57
From: N Texas
No its not normal, its not intended to function that way. What you have is a faulty electrical component, which is also not uncommon in any application.
Based on the properties of a Big Crank Battery, 26 Ah, and 2.2 amps draw of the fans, and the calculator link below, theoretically it will take 4.92 hours to drain a battery
http://ep.yimg.com/ty/cdn/sports-imp...drainCalc.html
I don't know how accurate this calculator is, I don't have real world results of how long the fans have to run before the bike wont start, even if I did have results they would not reasonably represent all bikes due to the varied health conditions of charging systems.
I've had reports of the original fans, 1.6 amp total draw, being left on during a 12 hour work shift and the bike still started, and I've had reports of the new fans, 2.2 amps total draw, being left on for 4 hours and the bike wouldn't start.
I can't guarantee that a thermal switch will never fail, I can guarantee I will replace it if it does fail.
If somebody wants a bulletproof no fail starting system I would suggest a battery buddy type device that cuts all draw on the battery before it gets too low to start, or add a time relay to the FCS circuit.
Bottom line a new thermal switch will probably take care of your problem. Again I don't have a database to cross reference forum screen names with real names so contact me via email with your current shipping info and I'll send you one.
Jason
Based on the properties of a Big Crank Battery, 26 Ah, and 2.2 amps draw of the fans, and the calculator link below, theoretically it will take 4.92 hours to drain a battery
http://ep.yimg.com/ty/cdn/sports-imp...drainCalc.html
I don't know how accurate this calculator is, I don't have real world results of how long the fans have to run before the bike wont start, even if I did have results they would not reasonably represent all bikes due to the varied health conditions of charging systems.
I've had reports of the original fans, 1.6 amp total draw, being left on during a 12 hour work shift and the bike still started, and I've had reports of the new fans, 2.2 amps total draw, being left on for 4 hours and the bike wouldn't start.
I can't guarantee that a thermal switch will never fail, I can guarantee I will replace it if it does fail.
If somebody wants a bulletproof no fail starting system I would suggest a battery buddy type device that cuts all draw on the battery before it gets too low to start, or add a time relay to the FCS circuit.
Bottom line a new thermal switch will probably take care of your problem. Again I don't have a database to cross reference forum screen names with real names so contact me via email with your current shipping info and I'll send you one.
Jason
Email sent.
Last edited by HD Pilot; Jun 16, 2014 at 07:58 PM.
Road Master
Joined: Jun 2006
Posts: 871
Likes: 7
From: Manchester, NH
This is the first time in years that I didn't shut the motor off while stopped in Laconia Bike Week traffic. Those of you that have experienced this know that everyone shuts their bikes off and just coasts down the hills leading to the Weirs. My engine temps never got over 262*.
Road Master
Joined: Jun 2006
Posts: 871
Likes: 7
From: Manchester, NH
Cylinder head temp per my power vision.
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Banned
Joined: Apr 2012
Posts: 648
Likes: 9
From: WV
Don't want you to think that I am upset or anything, hell I thought maybe I could have done something wrong. I have already posted a positive experience on the fans in the Dyna area, the performance of the fans to control my CHT has been amazing. Just thought I would post here to be sure I have not missed anything before contacting you. Email sent.
Email sent.