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krusher Samba Member
Joined: September 24, 2002 Posts: 7652 Location: europe
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Posted: Mon Oct 02, 2006 9:58 am Post subject: |
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Its all very complicated
Taller gears means a higher speed at the same rpm, but the demand for torque at the say 50mpg is now more as the engine has less leverage, so it makes more heat does to needing to a higher load.
Now through in the equation that when making your gears longer your fan now spins slowers.
So we have more power demand = more heats and less fan rpm = less cooling.
This is like the old argument of does a freeway flyer trans/ratios make you run hot etc.
The only way to realy know is to try it, be a pioneer.
Remember thought where not driving in a vacuum, the wind resistance is a hugh factor and the bus hits quite bad aerodynamic wall at 60mph where a great deal more Hp is required each 5mph you then go faster than that.
Its interesting when you asks alot of these questions that alot of the people out there that straight axel etc have no idea what there new gearbox ratios are in relation to stock and what there rolling tyre radius;s are compared to stock.
For example our friewnd above, hase not worked out his new tyre size compared to stock and the klm to mph conversion.
I say go for it just be conservative with thuse tall gears.
keith |
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John Moxon Samba Moderator
Joined: March 07, 2004 Posts: 13943 Location: Southampton U.K.
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Damon22 Samba Member
Joined: January 03, 2006 Posts: 238 Location: New Forest, Ingerland.
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Posted: Mon Oct 02, 2006 3:23 pm Post subject: |
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Forget the Judson Trevor, buy my 356 engine, it's a '55
Last edited by Damon22 on Mon Oct 02, 2006 3:34 pm; edited 1 time in total |
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barnjunkie Samba Member
Joined: March 28, 2004 Posts: 212 Location: london
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Posted: Tue Oct 03, 2006 4:24 am Post subject: |
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Damon22 wrote: |
Forget the Judson Trevor, buy my 356 engine, it's a '55 |
Cheers Damon
but the whole reason I'm into BD's is cause of the Judson
A 356 motor would be cool but unless its a givaway then its a no no _________________ Luca Brasi's got nothing on me
54 rhd Judson super narrowed
BDM Wannabe |
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splitpile Samba's Worst Speller
Joined: May 03, 2000 Posts: 5927 Location: back to living where hell meets the suface
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Posted: Tue Oct 03, 2006 12:21 pm Post subject: |
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On KCW's website, in ther gallery under type 2, there is a BD with a Judson and straight axle kit. There is even a video they did of it drag raceing a 36 hp beetle, cool video _________________ Stocking distributor of "The Funky Green Panels"
www.BUSTORATION.com metal and more for your bus
"no more hacking my sig line" |
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vw7266 Samba Member
Joined: April 28, 2004 Posts: 3038 Location: the point, ohio
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Posted: Thu Oct 05, 2006 5:41 pm Post subject: |
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I dont have a BD but I am putting a judson supercharger on my 57 panel...hopefully will be going down the road in a week or so. |
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sinclair Samba Member
Joined: July 01, 2004 Posts: 393 Location: New Forest UK
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Posted: Fri Oct 13, 2006 5:43 am Post subject: |
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barnjunkie wrote: |
Damon22 wrote: |
Forget the Judson Trevor, buy my 356 engine, it's a '55 |
Cheers Damon
but the whole reason I'm into BD's is cause of the Judson
A 356 motor would be cool but unless its a givaway then its a no no |
There’s more to a Judson than the speed. I ran mine on an SP 1600. Performance was little better but then I wasn’t over revving so I never saw much boost on the gauge.
What you do get is a great looking period engine bay and that fantastic compressor sound.
http://sinclair.fotopic.net/p9236186.html |
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54DoubleDoor Samba Member
Joined: December 08, 2003 Posts: 128 Location: Hampshire, UK
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Posted: Wed Oct 25, 2006 2:31 am Post subject: |
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Give me about 4 months and i'll let you know!!!... I have the 30/36hp OG engine, the judson and the 54 panel to throw it all into... its just going for paint soon.. .. but I will be running reduction boxes though..
55 is a great speed and plenty enough for motorway cruising... usually cruise at 55-60 in my 58 2007cc powered bus... great mpg!..
Deano _________________ 56 RHD UK Oval
58 RHD Oz Microbus |
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