Count Steer wrote: ↑Thu Jan 26, 2023 2:27 pm
It looks like a fairground 'wall of death' show type lash-up. Although the drive belt is on one side there's a pulley on both sides. The motor actually does look like a ditch pump and where's the exhaust? That pipe on top looks like it's connected to a distant carb and there's some sort of choke device in it by the cylinder head. Oh, and the artfully attached cloth underneath must be to catch the oil drips.
The lettering on the boards suggests 'travelling show' too.
Drive belt is on the far side - the 'pulley' on the nearside of the rear wheel might be the brake 'drum'. (ie it's the surface that the brake shoe acts on)
I saw the belt on the other side but didn't see anything that would act as a brake or anything that you'd use to activate it...unless he sticks his boot on that 'drum'.
That engine and belt drive definitely says 'farm' to me though.
Nah - belt drive was widely used until about the 1930s.
It might be simply a slightly different diameter pulley so you can spin the rear wheel around for a change of gearing. Upon closer inspection I can't see any form of brake mechanism so I think that's what it is.
The engine maker's name appears to be _____ AT & Com. (or possibly ____RT & Com). I'm struggling to think of it.
ChrisW wrote: ↑Thu Jan 26, 2023 5:01 pm
Here's a pic of the other side - so some kind of training aid although I'm not entirely sure exactly how this worked.
yeah - it's an aero-pace bike - the guy at the back sitting up creates a vortex which pulls the cyclist along.
Nice to have a different pic from obviously the same day! (same jumpers! )
Incidentally - the current bicycle speed record was done in virtually the same way - but with a dragster equipped with bodywork the size of a barn door!
ChrisW wrote: ↑Thu Jan 26, 2023 5:01 pm
Here's a pic of the other side - so some kind of training aid although I'm not entirely sure exactly how this worked.
yeah - it's an aero-pace bike - the guy at the back sitting up creates a vortex which pulls the cyclist along.
Nice to have a different pic from obviously the same day! (same jumpers! )
Huh! So the 'wheelie bar' is presumably a roller that the bike's front wheel can bump up against.
ChrisW wrote: ↑Thu Jan 26, 2023 5:01 pm
Here's a pic of the other side - so some kind of training aid although I'm not entirely sure exactly how this worked.
ChrisW wrote: ↑Thu Jan 26, 2023 5:01 pm
Here's a pic of the other side - so some kind of training aid although I'm not entirely sure exactly how this worked.
yeah - it's an aero-pace bike - the guy at the back sitting up creates a vortex which pulls the cyclist along.
Nice to have a different pic from obviously the same day! (same jumpers! )
Huh! So the 'wheelie bar' is presumably a roller that the bike's front wheel can bump up against.
yeah - it's an aero-pace bike - the guy at the back sitting up creates a vortex which pulls the cyclist along.
Nice to have a different pic from obviously the same day! (same jumpers! )
Huh! So the 'wheelie bar' is presumably a roller that the bike's front wheel can bump up against.
Or just a bar, won't necessarily be a roller.
'The bicycles had small front wheels in order to ride as close as possible to the pace bike, and the pace bike was often equipped with a small roller just aft of the rear wheel to avoid disaster should the cyclist make contact with the pace bike. Despite this safety feature, many pacers and cyclists got killed in crashes due to the high speeds and lack of protection.'
Doubt is not a pleasant condition.
But certainty is an absurd one.
Voltaire
Before Deraileurs were invented cyclists used to have a different sized sprocket on the drive side / non drive side.To change the gearing they'd take out the rear wheel & fit it back with the non drive side sprocket now becoming the drive sprocket.
Skub wrote: ↑Tue Jan 24, 2023 12:03 pm
A GSXR1100 dirt bike anyone?
The guy I bought my house from years ago built a turbo Gixer1100 quad for Sand Drag's. I found the original 500 stroker engine buried in the back yard.
Count Steer wrote: ↑Fri Jan 27, 2023 3:59 pm
A Belgian bike! One careful owner, 52km on the clock, suitable for UK roads....and a small family. Built in a 'mountainous area'...of Belgium.
Our local spiffy bike shop is converting a Honda RC213V-S for road use... Probably won't be tempting that to play on Mulholland... They had one before & sold it for $265,000
Aren't they already road legal? The 'S' is for 'Street' I assumed. I.e. differentiated from the RC213V prototype racer.
They've got lights and plates from Honda AFAIK. But they did come with an "optional" track pack, the box for which was surely ticked by 100% of buyers?
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