Author Topic: Heavyweight crank?  (Read 946 times)

Online Greybeard

  • Jack of all trades; master of none.
  • Wise & Enlightened
  • *
  • Join Date: Feb 2011
  • Posts: 9812
  • Karma: 49
Heavyweight crank?
« on: 19.03. 2021 12:48 »
.
Greybeard (Neil)
2023 Gold Star
Supporter of THE DISTINGUISHED GENTLEMAN'S RIDE https://www.gentlemansride.com

Warwickshire UK


A Distinguished Gentleman Riding his 1955 Plunger Golden Flash

Offline Seabee

  • A's Good Friend
  • ***
  • Join Date: May 2011
  • Posts: 218
  • Karma: 3
  • 1957 Road Rocket
Re: Heavyweight crank?
« Reply #1 on: 19.03. 2021 14:50 »
You'd never stall that one taking off!
1961 Super Rocket
1957 Road Rocket
2009 Harley Electra Glide Classic
1993 Harley Springer Softtail
1971 Harley Shovelhead
1970 Harley Sportster Chopper
1957 Harley Panhead Chopper
1982 Yamaha XT550
2001 KTM EXC 400
1970 Honda CT70
Southern Illinois, USA

Online Greybeard

  • Jack of all trades; master of none.
  • Wise & Enlightened
  • *
  • Join Date: Feb 2011
  • Posts: 9812
  • Karma: 49
Re: Heavyweight crank?
« Reply #2 on: 19.03. 2021 18:25 »
What was the purpose of these cranks?
Greybeard (Neil)
2023 Gold Star
Supporter of THE DISTINGUISHED GENTLEMAN'S RIDE https://www.gentlemansride.com

Warwickshire UK


A Distinguished Gentleman Riding his 1955 Plunger Golden Flash

Online berger

  • Wise & Enlightened
  • *
  • Join Date: Nov 2017
  • Posts: 2909
  • Karma: 20
  • keith.uk 500sscafe.norbsa JDM honda 750fz
Re: Heavyweight crank?
« Reply #3 on: 19.03. 2021 18:36 »
greybeard I have just seen -for side car use made for one year

Offline trevinoz

  • Newcastle, N.S.W. Australia.
  • Wise & Enlightened
  • *
  • Join Date: Jul 2006
  • Posts: 3184
  • Karma: 71
Re: Heavyweight crank?
« Reply #4 on: 20.03. 2021 21:03 »
They were the original LJ cranks used in Road Rockets until 1957.

Offline BSA_54A10

  • Wise & Enlightened
  • *
  • Join Date: May 2008
  • Posts: 2544
  • Karma: 37
    • BSA National
Re: Heavyweight crank?
« Reply #5 on: 22.03. 2021 01:57 »
One of the three wheeled cars of the 50's used an A7 but those cranks are usually longer on the output side.
And are heavier than the motorcycle cranks.
Bike Beesa
Trevor

Online Greybeard

  • Jack of all trades; master of none.
  • Wise & Enlightened
  • *
  • Join Date: Feb 2011
  • Posts: 9812
  • Karma: 49
Re: Heavyweight crank?
« Reply #6 on: 22.03. 2021 09:40 »
One of the three cars of the 50's used an A7 but those cranks are usually longer on the output side.
And are heavier than the motorcycle cranks.
Are you talking about BSA cars?
Greybeard (Neil)
2023 Gold Star
Supporter of THE DISTINGUISHED GENTLEMAN'S RIDE https://www.gentlemansride.com

Warwickshire UK


A Distinguished Gentleman Riding his 1955 Plunger Golden Flash

Offline BSA_54A10

  • Wise & Enlightened
  • *
  • Join Date: May 2008
  • Posts: 2544
  • Karma: 37
    • BSA National
Re: Heavyweight crank?
« Reply #7 on: 24.03. 2021 07:32 »
forgot the word wheelers.
Things like the Bond .
One of those back of the brain things.
BSA used their own engine in their 3 wheelers which was water cooled .
Bike Beesa
Trevor

Online JulianS

  • 1962 A10
  • Wise & Enlightened
  • *
  • Join Date: Mar 2017
  • Posts: 1385
  • Karma: 29
Re: Heavyweight crank?
« Reply #8 on: 24.03. 2021 09:30 »
A small number of A10 engines were supplied to Fairthorpe for this car in the 1950s.

Though I suspect they were not fitted with the questioned crank.


Online Greybeard

  • Jack of all trades; master of none.
  • Wise & Enlightened
  • *
  • Join Date: Feb 2011
  • Posts: 9812
  • Karma: 49
Re: Heavyweight crank?
« Reply #9 on: 24.03. 2021 09:46 »
I noticed this...


Greybeard (Neil)
2023 Gold Star
Supporter of THE DISTINGUISHED GENTLEMAN'S RIDE https://www.gentlemansride.com

Warwickshire UK


A Distinguished Gentleman Riding his 1955 Plunger Golden Flash

Online Greybeard

  • Jack of all trades; master of none.
  • Wise & Enlightened
  • *
  • Join Date: Feb 2011
  • Posts: 9812
  • Karma: 49
Re: Heavyweight crank?
« Reply #10 on: 24.03. 2021 09:48 »
There is no mention of an electric starter.  *eek*

I guess it's mounted on the far side of the bell housing with the Bendix engaging with a toothed flywheel, as per cars of the time.

If there is a car type clutch is it fixed to a car type flywheel? If so, does the engine still have the normal, or even the heavyweight flywheel?
Greybeard (Neil)
2023 Gold Star
Supporter of THE DISTINGUISHED GENTLEMAN'S RIDE https://www.gentlemansride.com

Warwickshire UK


A Distinguished Gentleman Riding his 1955 Plunger Golden Flash

Offline Minto

  • Resident Legend
  • *****
  • Join Date: Mar 2019
  • Posts: 731
  • Karma: 10
Re: Heavyweight crank?
« Reply #11 on: 25.03. 2021 00:45 »
My brother Daren had a friend in Birmingham who was very much into BSAs, also owned a BSA engined 3 wheeled car called a Berkley, I know nothing about other than one had to lift the bonnet up and climb inside to kick-start it, awesome!
Just googled this, and it wasn't a BSA engine at all, it was an Excelsior talisman 328cc 2 stroke, sorry.
Regards
Jase
52 A10 plunger
Aprilia RSVR

Online groily

  • Wise & Enlightened
  • *
  • Join Date: Jul 2007
  • Posts: 1844
  • Karma: 31
    • www.brightsparkmagnetos.com
Re: Heavyweight crank?
« Reply #12 on: 25.03. 2021 07:51 »
And the bigger ones had the Super Meteor Oilfield engine with 40bhp. Berkeley went through a range of 2 stroke and then 4 stroke motors and made quite pretty but fragile 3 and 4 wheelers, as rare as hens' teeth now.
My dad's first wheels (apart from a little Coventry-Eagle he used - in Coventry! - for fire-watching duties as a teenager in the first years of WW2) was a three-wheeled Beesa. He always said he wished he'd kept it - along with a hundred other things of course, as the rose-tinteds misted up.
Bill

Offline BSA_54A10

  • Wise & Enlightened
  • *
  • Join Date: May 2008
  • Posts: 2544
  • Karma: 37
    • BSA National
Re: Heavyweight crank?
« Reply #13 on: 25.03. 2021 08:16 »
A small number of A10 engines were supplied to Fairthorpe for this car in the 1950s.

Though I suspect they were not fitted with the questioned crank.
Not the one I was thinking of but similar idea
A heavy crankshaft would be an advantage but that car looks like it has a flywheel & std electric starter
The one in the back of my mind had a crank handle start
Bike Beesa
Trevor

Online JulianS

  • 1962 A10
  • Wise & Enlightened
  • *
  • Join Date: Mar 2017
  • Posts: 1385
  • Karma: 29
Re: Heavyweight crank?
« Reply #14 on: 25.03. 2021 09:57 »
BSA supplied some C10 250cc engine to AC for their 3 wheeler Invacar during the early 1950s.