tilly819
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| posted on 26/5/09 at 11:49 AM |
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BEC battery choice???
Hi all,
I am building a haynes roadster using a honda blackbird engine and a car electric starter moter for reverse
Can i use a car battery since most moterbike batterys seem like they dont have enough Amp hours plus they are very expencive compared to car
batterys??
If i cannot use a car battery what would be a good recomended Bike battery??
Thanks Tilly
[Edited on 26/5/09 by tilly819]
F20C Haynes roadster 440 BHP/Tonne www.youtube.com/handmadeextreme
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ReMan
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| posted on 26/5/09 at 12:04 PM |
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If your using a car starter, you're gonna need a car battery too
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nitram38
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| posted on 26/5/09 at 12:04 PM |
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Get yourself an oddessey or redtop battery. They aren't cheap, but compared to a normal battery, their cranking amps are very high.
Also weight is an issue on becs so you can save some here over a standard battery.
Just make sure you get an intelligent charger like a CTEK to look after it while it is laid up.
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Mr Whippy
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| posted on 26/5/09 at 12:05 PM |
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That car starter will kill a bike battery in no time, just fit a budget car one
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tilly819
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| posted on 26/5/09 at 12:08 PM |
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Ok that all sounds very good,
Iv heard that car batterys can somehow damage the alternater on a Bike engine by overloading them or something .... is this just a load of tosh or is
there some fact in there??
F20C Haynes roadster 440 BHP/Tonne www.youtube.com/handmadeextreme
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nitram38
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| posted on 26/5/09 at 12:09 PM |
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quote:
Originally posted by Mr Whippy
That car starter will kill a bike battery in no time, just fit a budget car one
It depends what size you go for, but why should it kill the battery?
My F1-2 1.4 K series ran/ started on a redtop 25 which is designed for 680 cranking amps. Sometimes it takes a long time to start a very cold engine
and it handled it for 3 years without a problem.
Capacity is your only enemy as smaller batteries will run out of steam quickly.
The Motaleira reverse worked on an oddessey 680 and even started the engine afterwards.
[Edited on 26/5/2009 by nitram38]
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ReMan
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| posted on 26/5/09 at 12:11 PM |
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and an oddessy will be very very very expensive comparwed to a car battery 
But, if you can afford one then as said, top kit
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coozer
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| posted on 26/5/09 at 01:33 PM |
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I have a Red Top 25 in my car, it has handled the zetec starter all through the build and one year past SVA has never had a charger on it.
As long as you don't drive all the way to Tesco in reverse I would suggest it will be fine.
Steve
1972 V8 Jago
1980 Z750
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Jon Ison
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| posted on 26/5/09 at 03:04 PM |
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I ran a std bike battery with electric reverse, as long as engines running whats the problem, reverse will be selected for what, 10 seconds max ?
Am I missing something, never had a problem myself ?
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tilly819
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| posted on 26/5/09 at 04:01 PM |
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ok thanks very much for all the help people
F20C Haynes roadster 440 BHP/Tonne www.youtube.com/handmadeextreme
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