Biggest single cylinder motorbike engine?

For the trabant run next year I am looking at getting one of my mates trabants with a dead engine, and fitting some kind of beasty torquey as you like big single.

I know suzuki/ktm do a 600cc single, and there are two at uni, I want BIGGER!!!!

oh and four stroke is preffered

you want a 4 stoke single cylinder with more than 600cc. thats not possible? unless there have been serious advances in mechanics that i missed.

650cc
http://www.bmw-motorrad.co.uk/com/en...ecylinder.html
might be a bit pricey mind.....

why's it not possible??

I've heard of a russian tractor with a 7.5litre or was it 35litre single cylinder 2stroke engine.

35l 1 pot FTMFW

probably look'd something like that, only the bloke driving it had a MUCH bigger grin

suzuki DR800, heard of it before but forgot


ngine:
# Single cylinder, 779 cm3 (Big)
# Oil and air cooled
# Four valves
# Two spark plugs
# Two 33 mm Mikuni carburetors
# Net weight: 194 kg
# Tank capacity: 24 litres
# Seat height: 89.5 cm
# Tyres: front: 90/90-21, rear: 130/90-17
# Power: 54 hp at 6340 rpm
# Top speed: 168 km/h


too new and too rare to find one working for a few £££ though

I would settle for ANYTHING that just sounds BAD and WRONG, and has an idle of whatever the hell it feels like from 1rpm-50rpm max

Honda did one, the NX650 Dominator. Specs here: http://www.motorcyclespecs.co.za/mod...nator%2093.htm

BMW also offer one - "BMW revealed a new family of three lightweight, single-cylinder machines - the G650 Xchallenge, G650 Xmoto and G650 Xcountry (for X, say cross)"

Full article here:

http://motoring.independent.co.uk/fe...cle1919450.ece

Biggest seems to be a Suzuki - DR BiG 750cc!

http://www.bikez.com/motorcycles/suz...750_s_1988.php

Either way, looks like they are all dirt bike engines and not really that powerful. If you REALLY want low down torque try and find a Yamaha TDM 850 engine. It's a parallel 850cc twin, but very torquey!

EDIT: Faster 4 Tec found a later model of Suzuki DR BIG! They upped it to 800cc!

royal enfield (india) used to do a 650cc diesel single too.....

i think most KTMs are single Cylinders, what about the 950 duke?

just abou anything is more powerful and lighter than the cast iron 2stroke up twin chunk of junk that was originally fitted.

even if it was the same power of (16-24bhp), a motorbike would weigh about half that or the OE engine so would already be an improvement.

the 410cc' suzuki engines in the formula student car were kicking 45hp I think, from factory, with some wild tuning mod's a huge custom pipe, some minor interenal work, two rows of DTA controlled injectors and a 10ltr carbon fibre plenum, they are each knocking out about 68bhp and about 65-70lb.ft of torque, which is very impressive for a bike engine.

I love the sound triumph 600's make (the 4pot 4stroke), but weigh to expensive and quite big. also they are not BAD enough.


If I go ahead with this the trabbie is going to be painted with stone chip paint or matt black paint in every orefice. with black this, black that, some badly black tint'd lights, a chrome stinger pipe, and err a bucket or two.
brakes will be left standard, but maybe some fat rims that rub on everything

its going to be mad, and under £500 T&T'd, or else it doesn't happen

Hi..
Found this while searching for Rotger Feldmanss's "Satte liter shussel"(1.4 liter single cylinder motorbike..)

http://www.werner-broesel.de/kultliter.html

I think i win with this one:P

http://www.motorrad-bild.de/ta_exoten/2_liter_bike.htm

2.0 litre, no silencer!!!
insane i think :P

Greatings
Marko

Pretty sure that is a twin cylinder V twin.

Faster 4 Tec, you know you really want to fit a Suzuki Hyabusa engine in there

yes that IS mad, that would tear a plastic trabbie to pieces!!!


I think a suzuki, or ktm branded suzuki single is going to be easiest to find.

a nice fat chromey pipe is also on the cards.

wouldn't know if it would be better to try and couple it to the factory box (resonably tough, but ratio's would only work with a single), or try and plumb the bike gearbox in, which may not be beefy enough to take the repeated strain