Early A7 and A10 speed records

worntorn · Feb 6, 2020

How on earth did they do it?
A7 record set on pump gas and 8 to one CR.

Triton Thrasher · Feb 7, 2020

The bare belly is worth a few mph.

ntst8 · Feb 7, 2020

Triton Thrasher said:
The bare belly is worth a few mph.

And sadly a beer belly takes a few mph off

Bernhard · Feb 7, 2020

Or the rider rode it like Roland "Rollie" Free!

oldmikew · Feb 7, 2020

siamese pipes and megaphone? + whatever else

oldbeezer · Feb 8, 2020

no front brake

worntorn · Feb 9, 2020

The 650 is in the Deeley museum here in Vancouver.

Glen

oldmikew · Feb 9, 2020

worntorn said:
The 650 is in the Deeley museum here in Vancouver.

Glen

Is it an iron head or an early alloy?

worntorn · Feb 9, 2020

Can't remember, will have to visit again.

Glen

oldmikew · Feb 9, 2020

Please do , am amazed at 143 claim for the A10... at some classic due here in the UK met this bloke who had worked in the BSA race shop an he reckoned the A7 had been giving 50bhp.. Well seems a lot ,but it would power up to 120 or so.. But another 20mph on top would need circa 70bhp + so am a bit sceptical... If it has an iron head and thin flanged barrels , then it would seem there must have been a following wind of some magnitude..

Robert_Norton · Feb 11, 2020

Modified and running methanol for the A10, from what I've been able to find others have shared online.

https://www.worldofspeed.org/archive-blog-1/2019/3/19/bsa-racer-gene-thiessen

https://www.google.com/search?newwi...hUKEwjK-di7r8rnAhUeFzQIHarTAM8Q4dUDCAs&uact=5

worntorn · Feb 11, 2020

It's a Bonneville record, so an actual recorded speed, not merely a claim.
At high elevation and on slippery footing to boot!

Glen

xbacksideslider · Feb 11, 2020

And it’s an out and back average to offset any wind advantage