RickRick
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| posted on 23/3/11 at 09:04 AM |
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Can you bump start a BEC?
I've not broken down or anything, just wondered if there's any reason why you shouldn't do it to a bike engine specificaly a r1
5vy
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MakeEverything
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| posted on 23/3/11 at 09:12 AM |
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You can bump start a bike with a bit of energy and balance, so i dont see why you couldnt do this in a bec in second gear.
Kindest Regards,
Richard.
...You can make it foolProof, but youll never make it Idiot Proof!...
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tilly819
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| posted on 23/3/11 at 09:12 AM |
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dont see why not , we used to bump start my mates motoX bike all the time
probably just gives the clutch a bit of a hard time
tilly
F20C Haynes roadster 440 BHP/Tonne www.youtube.com/handmadeextreme
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ReMan
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| posted on 23/3/11 at 09:13 AM |
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Yep, done it.
www.plusnine.co.uk
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spdpug98
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| posted on 23/3/11 at 09:18 AM |
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Yes you can. Mine lost all charge in the battery when stuck in traffic to get into Goodwood, it was early in the morning and had all my lights on,
when I got to the roundabout I stalled it and had about 3 miles of traffic behind me, thankfully a couple of police bikers where on the roundabout and
gave me push start
My Blog: http://spdpug98.wordpress.com/
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mookaloid
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| posted on 23/3/11 at 09:32 AM |
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Depends - if it is EFi and the battery is completely flat it still won't start cos the fuel won't go in.
If it's carbs it probably will 
"That thing you're thinking - it wont be that."
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minitici
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| posted on 23/3/11 at 09:42 AM |
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Not recommended to bump start some bike engines as there is the possibility of a kickback and blowing the starter clutch and housing.
Was a problem on early Busa motors hence the aftermarket starter clutches and billet housings.....
This is also a problem if you spin a BEC and don't depress the clutch quick enough.
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hobbsy
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| posted on 23/3/11 at 10:13 AM |
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I was able to bump mine once when I cooked the stator, the battery still had some juice but not enough to spin the engine over quick enough. Problem
was though (as other posts eluded to) is that if it's EFi and it's not charging it all (as mine wasn't) then eventually the fuel
pump / ecu / injectors / spark plugs will drain what power is left and you'll stop. So I ended up calling the recovery truck in Dover rather
than crawl to a stop in the Dartford tunnel or similar!
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rb968
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| posted on 23/3/11 at 12:12 PM |
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Yes did it last weekend when stalled couldn't get neutral and stuck in an awkward spot.
Rich
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MakeEverything
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| posted on 23/3/11 at 12:21 PM |
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quote:
Originally posted by rb968
Yes did it last weekend when stalled couldn't get neutral and stuck in an awkward spot.
Rich
Another plus for a CEC! lol
Kindest Regards,
Richard.
...You can make it foolProof, but youll never make it Idiot Proof!...
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Frosty
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| posted on 23/3/11 at 01:25 PM |
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I've bump-started my Busa a couple of times, and a friend's R1 BEC bump started fine also.
Windscreen Wipers
Need windscreen wipers for your car? Order from a friendly kit car owner.
Don't pay a garage to do them. You built a car for God's sake - I'm sure you can fit your own wipers!
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MikeCapon
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| posted on 23/3/11 at 02:19 PM |
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Any bike engine can be bump started without any risk to clutches, starters or anything else.
It's going backwards that bike engines don't like. If you spin and end up going backwards the starter clutch engages, then tries to go to
a million rpm, then promptly explodes, often taking bits of engine case with it.
If you spin, dip the clutch.....
Edited to correct rubbish spelling
[Edited on 23/3/11 by MikeCapon]
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rb968
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| posted on 23/3/11 at 03:41 PM |
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quote:
Originally posted by MakeEverything
quote:
Originally posted by rb968
Yes did it last weekend when stalled couldn't get neutral and stuck in an awkward spot.
Rich
Another plus for a CEC! lol
....and a reason to bypass the neutral switch /starter restriction. Its on the list.
Rich
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adithorp
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| posted on 23/3/11 at 04:11 PM |
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quote:
Originally posted by rb968
....and a reason to bypass the neutral switch /starter restriction. Its on the list.
Rich
Get it done. I did mine last year and it makes life a lot easier... If nothing else, "sods law" says you'll never stall again.
"A witty saying proves nothing" Voltaire
http://jpsc.org.uk/forum/
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Davey D
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| posted on 24/3/11 at 12:58 PM |
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Ive bumped mine off before when the battery was too low to start the engine. i did struggle though as it was a damp day, and every time the car was
rolling and the clutch released the car would just skid to a halt as there wasnt enough weight in the car to crank against the engine 
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