maybe with the clutch pedal pushed in. But if in gear with the throttle closed, then you are decelerating due to compression as wellPiet wrote: ↑Mon Aug 14, 2017 9:06 pm Many years ago I wrote a bit of software for a company that develops chips for modern cars, and build their own dyno's too. They have a theory that you accelerate on the rollers as hard as you can, until you hit the limit. Then you close the throttle and let the wheels decelerate in gear while you keep on recording. You can then calculate the drag of the drive-train (the longer the wheels keep on spinning, the less drag). By adding the drag to the torque you get to the "real" output of the engine. Does that make sense?
My bug - ANGRRR - the ongoing project
- Tony Z
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Re: My bug - ANGRRR - the ongoing project
ANGRRR
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vader wrote: The Force is strong with you young Sith Lord Z!
- Tony Z
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Re: My bug - ANGRRR - the ongoing project
The gearbox is broken....
Doing about 160 in 4th and I put my foot down, there was an almighty bang and then a continuous rubbing sound. At first I thought the clutch had delaminated and was rubbing on the bellhousing, but after I stopped and pushed the car, it proved to be something a bit more serious.
I've pulled out the engine and the gearbox is on a pallet on its way to JHB for a rebuild and to find out what broke.
I didnt notice any chunks in the oil, but there was a lot of shiney stuff and the oil was particularly black for a gearbox.
Pushing the car around, after a few cm, the rear wheels lock up and then release with a loud bang/clunk like someone hitting a hard metallic object with a hammer.
On a positive note, this gives me a chance to neaten up and re-route some oil hoses as well as attend to some small oil leaks which I cant get to with the engine in the car.
Doing about 160 in 4th and I put my foot down, there was an almighty bang and then a continuous rubbing sound. At first I thought the clutch had delaminated and was rubbing on the bellhousing, but after I stopped and pushed the car, it proved to be something a bit more serious.
I've pulled out the engine and the gearbox is on a pallet on its way to JHB for a rebuild and to find out what broke.
I didnt notice any chunks in the oil, but there was a lot of shiney stuff and the oil was particularly black for a gearbox.
Pushing the car around, after a few cm, the rear wheels lock up and then release with a loud bang/clunk like someone hitting a hard metallic object with a hammer.
On a positive note, this gives me a chance to neaten up and re-route some oil hoses as well as attend to some small oil leaks which I cant get to with the engine in the car.
ANGRRR
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vader wrote: The Force is strong with you young Sith Lord Z!
- retrovan
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Re: My bug - ANGRRR - the ongoing project
Sad to hear Tony, and these gearboxes can be expensive to rebuild....
Good it did not happen on its way to George........ OH !! wait... she's a trailer queen.....
Jokes aside, are you going to George. ??
Herman
1952 Split Beetle 1835cc
1968 Fastback 2Lt.type4
1972 Low Light Bay Panel Van 2Lt type 4
1975 Fleetline Panel Van 1914cc
2020 MeFusco Beetle Truck 2Lt type 4
1972 FT Hahn SP 1776 cc
1968 Fastback 2Lt.type4
1972 Low Light Bay Panel Van 2Lt type 4
1975 Fleetline Panel Van 1914cc
2020 MeFusco Beetle Truck 2Lt type 4
1972 FT Hahn SP 1776 cc
- Tony Z
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Re: My bug - ANGRRR - the ongoing project
yea, the box broke on a trailer....
I wont be in George this year, I'm heading to Florida in a couple of weeks for 2 months
I wont be in George this year, I'm heading to Florida in a couple of weeks for 2 months
ANGRRR
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vader wrote: The Force is strong with you young Sith Lord Z!
- retrovan
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Re: My bug - ANGRRR - the ongoing project
Bonn-voyage and come home safely
Herman
1952 Split Beetle 1835cc
1968 Fastback 2Lt.type4
1972 Low Light Bay Panel Van 2Lt type 4
1975 Fleetline Panel Van 1914cc
2020 MeFusco Beetle Truck 2Lt type 4
1972 FT Hahn SP 1776 cc
1968 Fastback 2Lt.type4
1972 Low Light Bay Panel Van 2Lt type 4
1975 Fleetline Panel Van 1914cc
2020 MeFusco Beetle Truck 2Lt type 4
1972 FT Hahn SP 1776 cc
- Donovan D
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Re: My bug - ANGRRR - the ongoing project
Eish, thats not good. Hope you get sorted soon.
---------- 67 Panelvan -----------
---------- 56 Oval ----------
---------- 56 Oval ----------
- fourier
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Re: My bug - ANGRRR - the ongoing project
Sorry to hear of your unexpected gearbox trouble, but you certainly aren't wasting any time in getting it sorted!
You've spent a lot of money on having a bulletproof gearbox built... I will also need a strong gearbox for my car, so would be very interested to know what went wrong, and what will be done to prevent the same from happening again.
(o= i =o) (o\ ! /o)
- Tony Z
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Re: My bug - ANGRRR - the ongoing project
you can start by not driving like a goon the way I do...
ANGRRR
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vader wrote: The Force is strong with you young Sith Lord Z!
- acpaterson
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Re: My bug - ANGRRR - the ongoing project
lol, then why oh why spend all that valuable money on the car in the first place?
- fourier
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Re: My bug - ANGRRR - the ongoing project
Don't think anyone has that level of restraint... How do you not use an engine like that, to its full potential?
(o= i =o) (o\ ! /o)
- Tony Z
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Re: My bug - ANGRRR - the ongoing project
tyres are for smoking... (or is it clutches are for smoking?)
ANGRRR
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vader wrote: The Force is strong with you young Sith Lord Z!
- Thumper
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Re: My bug - ANGRRR - the ongoing project
Going for cross cut gears this time?
My Bug: http://www.aircooledvwsa.co.za/viewtopi ... 37&t=12416" onclick="window.open(this.href);return false;
- Tony Z
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Re: My bug - ANGRRR - the ongoing project
It turns out that I havent updated this thread to show what happened to the gearbox
Bugger took the box apart and his comments are that my engine makes too much torque
Apparently what happened is that 4th gear bend the circlip that holds it in place and pushed it off the main shaft, leading to all sorts of grinding noises...
Bugger has upgraded the retaining system on this shaft to prevent 4th from pushing itself off again
4th gear
Bugger took the box apart and his comments are that my engine makes too much torque
Apparently what happened is that 4th gear bend the circlip that holds it in place and pushed it off the main shaft, leading to all sorts of grinding noises...
Bugger has upgraded the retaining system on this shaft to prevent 4th from pushing itself off again
4th gear
ANGRRR
http://www.aircooledvwsa.co.za/viewtopi ... 23&t=14775
1302S
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Panel Van
http://www.aircooledvwsa.co.za/viewtopic.php?p=288723
http://www.aircooledvwsa.co.za/viewtopi ... 23&t=14775
1302S
http://www.aircooledvwsa.co.za/viewtopi ... 23&t=33521
Panel Van
http://www.aircooledvwsa.co.za/viewtopic.php?p=288723
vader wrote: The Force is strong with you young Sith Lord Z!