I am becoming aware that the Jowett 10s thermo syphon cooling system isn't quite up to today's heavy traffic and queues. The radiator is good and all the pipes and waterways are clear ,stuck in traffic the temp will rise up to 95 deg C .
I am looking into the possibility of fitting an electric water pump to aid the circulation ,please what are people's thoughts and opinions of this
Electric water pump
-
nigel jarrett
- Posts: 144
- Joined: Sun Jan 04, 2009 11:58 pm
- Your interest in the forum: Javelin and pre war
- Given Name: Nigel
- Location: TEIGNMOUTH DEVON
Electric water pump
have just purchased a javilin and will need all the help i can get
-
BarryCambs
- Posts: 331
- Joined: Fri Nov 25, 2011 2:49 pm
- Your interest in the forum: Owner of a long two in Cambridge
- Given Name: Barry
Re: Electric water pump
Hi Nigel
I would suspect it's more a problem with heat not getting away from the radiator. Does the Ten have a fan? an electric fan would probably be a better solution, if it hasn't or even as an upgrade. If it as a circulation issue, it would probably get hot climbing hills too
Barry
I would suspect it's more a problem with heat not getting away from the radiator. Does the Ten have a fan? an electric fan would probably be a better solution, if it hasn't or even as an upgrade. If it as a circulation issue, it would probably get hot climbing hills too
Barry
-
Forumadmin
- Site Admin
- Posts: 20648
- Joined: Tue Feb 07, 2006 5:18 pm
- Your interest in the forum: Not a lot!
- Given Name: Forum
Re: Electric water pump
The problem with fitting an electric fan to pre-war vehicles is that you then will need a 12v system and an alternator as the current drain is upwards of 15 A. The same may be true with an electric water pump. Some have fitted these to Jups and Javs successfully.
-
BarryCambs
- Posts: 331
- Joined: Fri Nov 25, 2011 2:49 pm
- Your interest in the forum: Owner of a long two in Cambridge
- Given Name: Barry
Re: Electric water pump
My 1934 engine is 12v, so I assume the 10 was? I think the commercials including the Bradford stuck to 6v.
If it has the same 3 brush dynamo, the output is 8 amps. If you just needed to run the fan for a few minutes if it got hot you'd probably get away with it. I have some special halogen headlight bulbs with the correct caps in mine. It was only when I did the calculation from Watts to Amps I realised they draw about 7.999 Amps with the sidelights, the problem compounded by the fact you need to be doing 30mph in top to get to full dynamo output! Fortunately, the modern battery can pretty much bring it home from most places. Driving it across town at night with it showing a discharge of several amps all the time, reminded me of going through London to my Grandparents in the 60/70s and seeing all the vehicles driving on side lights. Mystery solved
If it has the same 3 brush dynamo, the output is 8 amps. If you just needed to run the fan for a few minutes if it got hot you'd probably get away with it. I have some special halogen headlight bulbs with the correct caps in mine. It was only when I did the calculation from Watts to Amps I realised they draw about 7.999 Amps with the sidelights, the problem compounded by the fact you need to be doing 30mph in top to get to full dynamo output! Fortunately, the modern battery can pretty much bring it home from most places. Driving it across town at night with it showing a discharge of several amps all the time, reminded me of going through London to my Grandparents in the 60/70s and seeing all the vehicles driving on side lights. Mystery solved
-
ajackson
- Posts: 103
- Joined: Fri Aug 07, 2015 2:23 pm
- Your interest in the forum: My Jupiter is having ongoing work and I hope will be ready later this year.
- Given Name: Andy
- Location: Zurich, Switzerland
Re: Electric water pump
Draw can be below 6A depending on size, in case of help
https://www.demon-tweeks.com/uk/revotec ... ns-538077/
https://www.demon-tweeks.com/uk/revotec ... ns-538077/