Ever had a bike go backwards

[kevfromcoro]

Years ago I had an IT 175.Bought in in bits and finally got it going.
Gave it a kick....into gear and it shot off backwards.Gave me a hell of a fright.
Same thing happened to a mate of mine...He was going to work.pushed his bike out of the garage.pulled the door down...started the bike...and it shot back into the door.
Thing is...you dont know it running backwards until you dump the clutch.
Both these bikes were 2 stokes..
Think it is something to do with the timing.
To far advanced or retarded...(like the owners)
Has anyone else had this happen.

[thehollowmen]

apparently some diesel trucks can do it too.
So I've heard.

[skidMark]

hmmm i guess a 2 stroke engine cld run in reverse...put the kickstart on the wrong way around or something silly...because the only way thats possible is if the engine was running in reverse...or does it have a reverse gear...and it's jammed in it?

[skidMark]

Sounds like you need a new bike.

http://www.trademe.co.nz/Browse/List...x?id=119399664

photo cropping in photoshop or even ms paint.... is your friend

[T.W.R]

Yep been there done that on my old IT250
Gives you a shit of a shock when you click it into gear and let the clutch out and the damn thing tries to castrate you
Gives every bugger watching a hell of a laugh though.

It's your Flywheel/magneto the polarity is wrong, either who ever had the bike previously has changed either the flywheel or stator windings or vice versa without swapping the matching part to suit.
On my IT250 the flywheel key-way had slogged out so I replaced the flywheel put everything back together and the bike ran sweet as a nut so it was out for a test up the road
checked everything over thoroughly looking for the cause and asked plenty of questions to a few people I knew without much help for the problem apart from plenty of laughs.
Then in desperation took it all apart and put the stator windings that had come with the replacement flywheel in, reassembled it, fired it into life and no more reverso-bike

[skidMark]

Yep been there done that on my old IT250
Gives you a shit of a shock when you click it into gear and let the clutch out and the damn thing tries to castrate you
Gives every bugger watching a hell of a laugh though.

It's your Flywheel/magneto the polarity is wrong, either who ever had the bike previously has changed either the flywheel or stator windings or vice versa without swapping the matching part to suit.
On my IT250 the flywheel key-way had slogged out so I replaced the flywheel put everything back together and the bike ran sweet as a nut so it was out for a test up the road
checked everything over thoroughly looking for the cause and asked plenty of questions to a few people I knew without much help for the problem apart from plenty of laughs.
Then in desperation took it all apart and put the stator windings that had come with the replacement flywheel in, reassembled it, fired it into life and no more reverso-bike

cheers that should help him....mmm 4 strokes r my friend

[Headbanger]

Can't say I have ever had that happen, Though I do have helmet camera footage of my ATV rolling over top of me after I got her stuck going up a hill.

Quite funny imo, The silly part was I was thinking how good the footage would be as I fell over and the bike went over me......

[T.W.R]

cheers that should help him....mmm 4 strokes r my friend

Tell ya what it's a mean thing to happen when it does

there's the old beastie in the pic

[Jantar]

The old Suzuki Triples would run backwards quite happily if you swapped the #1 and #3 plug leads. They would be hard to start, but then there'd be a back fire and they would burst into life. It was only when you dropped the clutch that you'd find yourself heading backwards. Not so nice on a big 750 cc water cooled road bike.

[kevfromcoro]

Glad i got a respones to this
didnt think anyone would believe me.
Gives ya a fright allright.
damn near tore my nutts off

[iwilde]

My old man did a gearbox job for a bloke with a VW many years ago, he ended up with 4 reverse and 1 forward gear. I think something went back in upside down.

[DougB]

I posted this in a most embarrising moment thread last year.

Main street of Kawakawa on a Friday night many years ago in the days when every one came to town to shop see and be seen.

Parked my two stroke bike, got my stuff, came back and re-started it, a strange small backfire was heard. Slaped it into gear and let out the clutch, the bike shot backwards depositing me in a heap in the street in front of hundreds of amused locals. What a "shrink".

I had worked on two stroke engined boats that could be re timed and started in reverse but never thought it could happen by chance.

An engineer in Kaitaia in the early sixtys made a special with two gearboxes. I chearfully commented on the number of forward gears he would have. He grinned broardly and said -
"It has one more, put both boxes on reverse and it goes forward".

[jonbuoy]

Thats how they used to go astern with old school marine diesels, stop them and start in reverse. Not so good for an emergency crash stop....

[nadroj]

Used to hear about it in the 50's & 60's. Happens when engine backfires on starting then catches & runs in reverse. Can happen on 4 strokes too - mainly singles but rare nowdays.

[xwhatsit]

I've heard it can happen when the ignition timing gets really out -- as points ignition is prone to do. Kick-back *OUCH* kick-back *OUCH* *ZOOOM* (or is that *MOOOZ*?).