Bike Engine Reverse Wiring

[steady eddie]

Hi everyone

I'm going to put a bike engine in my roadster (eventually) the chassis is all done, front suspension made, everything painted and going well.
I like to plan ahead so the starter motor route for a reverse will be the road to go down. So to try and make life a little easier does anyone have a wiring diagram?
Half a mild in the Rat and Vomit to the winner::rolleyes:

[flyerncle]

No wiring diagram sorry,just make sure it only works in neutral and with the handbrake off only.

[steady eddie]

thanks for the advice, i appreciate any advice, but how would i do
what you suggest, it still leaves me with a problem, I'll keep looking
on the forums.....cheers Eddie

[robo]

These ready made jobs seem good value.http://www.blitzworld.co.uk/joyrider-reverse-box-i421.html. I dont think you would get much change from that if you start trying to mount starters to mesh into ring gears on the prop. It all has to be supported on brackets and bearings which is a bit messy. 100mph in reverse:):)


Edit Wheres that beer:)

Bob

[flyerncle]

Someone on the forum has done it with a ring gear from MK if I remember correctly,and again if memory serves me right it was a Seat starter motor.

No electrician but you can use the neutral switch in the bike box to feed a relay to inhibit it as per previous post.

Some kind forum member will remember and post a link.;)

[loony]

OK - I'm "building" BEC, so I'm trying to prepare for unexpected problems ;)

My Roadster will have electric reverse with VAG starter motor. It's because VAG starters turn counterclockwise... You can use most of them, but they have different sizes.
The gear you need is 12DP - the bigger you fit the easier/slower will go ;)
Very helpful pictures: http://www.locostbuilders.co.uk/photos.php?action=gal&user=40inches&folder=Electric%20reverse

As for electric diagram... I plan to connect relay(NO) feed to neutral switch, and second relay(NC) feed to brake light switch - in this way I can reverse by brake pedal.
But this is only my theory ;)

[alga]

As for electric diagram... I plan to connect relay(NO) feed to neutral switch, and second relay(NC) feed to brake light switch - in this way I can reverse by brake pedal.
But this is only my theory ;)

What happens when you're rolling back and need to stop? Press the pedal until it overpowers the reverse motor?

[loony]

First relay NO (neutral switch) and second NC (brake light switch) are in series.
When I press the brake pedal, brake light feed will disconnect reverse motor, and brakes stop the car...
Of course there will be manual "reverse switch" to activate system.

"Fast" diagram...
http://img26.imageshack.us/img26/8409/reversediagram.png

Like I said - it's just theory ;) So any suggestions welcome.

[flyerncle]

NO and NC are normally open and normally closed,might make it easier to understand.

My two pennies worth,neutral switch in the g/box,handbrake switch,and clutch switch will make sure it only works in neutral and hand brake off.

[robo]

The only thing wrong with this starter motor reverse thing is there is no speed control. Cant help thinking that it would be a complete ballache trying to reverse that into a tight parking space that needs a shunt or two. There wont be any feel to it , on/off thats it and if you ended up with a 3.1 diff with that size ring gear on the prop your reverse is going to be very rapid:eek: Just thoughts

Bob

Just put that lot into a speed calc. and thats 32.8 mph reverse gear on a button

[loony]

It's not that bad...
http://youtu.be/ugTB6muh-qE

But that's why I prefer to enagage/disangage reverse with brake pedal ;)

[steady eddie]

thanks to all of you for your ideas.

there is now plenty to go on. home made or ready made, I'll probably

go for the starter motor idea, and now you have given me some interesting

wiring plans I'm not working blind!!!

I'll be in the Rat and Vomit Friday, beers on me.

Thanks...Eddie