Latest topics
» New Member
Today at 2:04 am by stevenbell

» Frame end plugs
Thu Mar 21, 2019 9:07 pm by kerabo

» Falcon Trials & Scrambler Fuel Tanks
Thu Mar 21, 2019 7:58 pm by peter@dunfordconstruction

» New Rims for plover
Thu Mar 21, 2019 7:45 pm by Rex Stewart

» 2019 Event List update
Thu Mar 21, 2019 7:38 pm by John Wakefield

» Cambridge Classic Bike Show
Thu Mar 21, 2019 4:55 pm by John Wakefield

» Old pre-mix.
Mon Mar 18, 2019 4:11 pm by kerabo

» Browser problems
Mon Mar 18, 2019 12:10 pm by zorteus

» shows old and new
Mon Mar 18, 2019 12:01 pm by zorteus


Go down


Post  marcusrm on Fri Dec 07, 2018 12:52 pm

I wonder if anyone else has had this experience. Back in the 60s I had an FB with a 175cc AMC engine.
Leaving college one lunchtime, I started the bike but the engine sounded different. It was running but very slow to pick up revs when I opened the throttle.

Tried to ride off but the engine stalled. I noticed it, and the guy sitting on the pillion instantly said "did the bike go backwards?".
It definitely did.

I restarted the engine, everything was normal.
Has anyone else had the experience of a two stroke motor accidentally starting up backwards?

I tried many times afterwards to get the engine to run backwards, but I never succeeded.



Posts : 14
Join date : 2016-03-24
Location : Hatfield, Hertfordshire

Back to top Go down

running backward

Post  piston 197 on Fri Dec 07, 2018 3:22 pm

Yes several times, the timing has to be set very close to TDC, bike has to kick back or backfire on starting and engine will run either way.
Once when riding a DOT on the A40 to Gloucester i whiskered a plug and the bike began backfiring, I whipped the clutch in while riding and gave it a big handful of throttke to clear the backfiring, it cleared, just as it rolled to a slow stop i let out the clutch and immediately slid up the tank as it was going backwards.
piston 197
piston 197

Posts : 4309
Join date : 2008-08-17
Location : ross-on-wye

Back to top Go down

Happened to me in the '60s.

Post  Ted Snook on Sun Dec 30, 2018 8:15 pm

While practicing in a Quarry that we used for Trials practice on my FB 250 Trials, the machine coughed while climbing out up the wall of the said Quarry while flat in second and went into reverse. In those days we had a good laugh over my throwing the machine - and myself, but we bounced in those days. I cured it by lowering the crankcase compression ratio, but it was a load of work, and not something that I would get involved in nowadays
Ted Snook
Ted Snook

Posts : 144
Join date : 2012-01-16
Location : Newport Pagnell

Back to top Go down

Re: Backwards?

Post  Sponsored content

Sponsored content

Back to top Go down

Back to top

- Similar topics

Permissions in this forum:
You cannot reply to topics in this forum