No Slip Fan Belt -- YIKES --- Don\'t do this ??

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 · 2 Jun 2006, 1:08 pm

#495826

This fellow may have had a slipping fan belt....

but No Longer....:o:o

Very heavy chain and not even oiled......

Bad Move....

Lee

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- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

ColumBUS Hail To The Bus Driver!

3,601 posts · joined Sep 2004 · 2 Jun 2006, 1:24 pm

#495834

oooh ouch!
why???

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 · 2 Jun 2006, 1:29 pm

#495840

It probably works OK....

but I don't like it......

Timing chains used to be used in many engines...
Now replaced by belts....
but the chains were running in oil.....

Sizes of [pulleys] sprockets are different too....

Lee

- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

Andy Andy\'s Adventures

2,820 posts · joined Nov 2002 · 2 Jun 2006, 1:42 pm

#495846

looks like an unusualy mod for sure, I'd hate to think of the bearing load from that chain once it wears a little. Maybe he's driving more than the alt. and fan from that shaft?
How do you adjust it?

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 · 2 Jun 2006, 1:48 pm

#495849

It looks like the alternator base is home made....

where does He put the oil in???

it looks like a type 1 engine....

Lee

- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

empi Compulsive Aussie Vee Dubber

4,131 posts · joined Aug 2002 · 2 Jun 2006, 1:50 pm

#495850

Small bottom pully.... :duh

Could be a tuff mod for a tuff Ratt

"If at first you don't succeed, skydiving is not for you." - Anonymous 🥷

VWCOOL 23 Windows of Awesome

5,158 posts · joined Jun 2003 · 2 Jun 2006, 9:37 pm

#495990

Nice tinware!

Pay your debts, CxxT

type3lover in the garage...

796 posts · joined Feb 2005 · 2 Jun 2006, 10:40 pm

#496028

a reliable mod? "Tell him he's dreaming!"

.

Matt Ryan Fahrvergnugen

890 posts · joined Jan 2006 · 3 Jun 2006, 7:37 pm

#496255

I wouldn't like to be near it when it eventually (& inevitably) decides it's had enough and takes a flying lesson!!!!

Matt.

http://portvwforum.freeforums.org

bajachris88 The international telephone dialing code for Antarctica is 6

6,661 posts · joined Apr 2005 · 3 Jun 2006, 8:08 pm

#496265

WAIIITTT.

I read somewhere in some mechanical engineer's thesis about playing with vw and fans and cooling and belt slippage, that the fan only has a certain Max threshold area of 'spin-age' handling before it starts busting apart. Tis y u want to preserve fan belt slippage to some degree.

I would imagine this mod will have a different fan, modified fan otherwise it will die pretty quickly from what i read. Surely would creat some interesting pressure. a fan spinning around 1000 to 3000 revs. or greater :o

Clean out the heater channels Haha.

(ô_!_/ô) (ô_!_/ô)
69' baja: kombi box, thing spindles, irs, disc front, type 3 rear drums, 2 inch lift kit, 31x10 rears. 👍
New engine in process: 94mm p&bs, 74mm C/w chomol Crank, 35.5x39 SP heads, turbo. Wierd combo, hopeful torque monsta!

71superbug The Itch Itcher

1,184 posts · joined May 2004 · 4 Jun 2006, 4:51 pm

#496487

the new ba xr8's come with timing chains...although they are greased as mentioned above.

Anthony

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 · 4 Jun 2006, 5:08 pm

#496495

bajachris88 wrote:I read somewhere in some mechanical engineer's thesis about playing with vw and fans and cooling and belt slippage, that the fan only has a certain Max threshold area of 'spin-age' handling before it starts busting apart. Tis you want to preserve fan belt slippage to some degree.

You can usually tell when a fan belt is going to break, as they 'normally' crack etc a long time before they break...

I see a lot of High Performance motors in the US run an idler pulley on the belt to prevent slippage and have the 'normal' VW fan welded to prevent it falling apart at high revs....

Lee

- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

bajachris88 The international telephone dialing code for Antarctica is 6

6,661 posts · joined Apr 2005 · 4 Jun 2006, 5:13 pm

#496498

just don't go putting your finger in there

😂

(ô_!_/ô) (ô_!_/ô)
69' baja: kombi box, thing spindles, irs, disc front, type 3 rear drums, 2 inch lift kit, 31x10 rears. 👍
New engine in process: 94mm p&bs, 74mm C/w chomol Crank, 35.5x39 SP heads, turbo. Wierd combo, hopeful torque monsta!

Andy Andy\'s Adventures

2,820 posts · joined Nov 2002 · 8 Jun 2006, 3:00 pm

#498229

Oh dear, poor Wes would have a heart attached reading a quote like this!
Note the gearing, 1:1, it already spins much slow than stock, belt slip is to do with power being drawn by the fan being higher than what he belt can transmit, I don't think it's "designed that way" as there are way to many variables in service to determine exactly when it will slip.

bajachris88 wrote:WAIIITTT.

I read somewhere in some mechanical engineer's thesis about playing with vw and fans and cooling and belt slippage, that the fan only has a certain Max threshold area of 'spin-age' handling before it starts busting apart. Tis y u want to preserve fan belt slippage to some degree.

I would imagine this mod will have a different fan, modified fan otherwise it will die pretty quickly from what i read. Surely would creat some interesting pressure. a fan spinning around 1000 to 3000 revs. or greater :o

Clean out the heater channels Haha.