Damn that blower gone again.
Re: Damn that blower gone again.
Even through Pam is more efficient, you still would need to switch the fan with a 16A midget which will get super hot and need very similar thermal protection to that causing the issues here.
Plus, the ignition would cause all sorts if hassle to digital electrics being so close without a lot of noise suppression
Edit: on phone... Pwm and mosfet
Plus, the ignition would cause all sorts if hassle to digital electrics being so close without a lot of noise suppression
Edit: on phone... Pwm and mosfet
'89(G) 340 GLE B172k
'03 S60 D5 SE, '91 (J) MX5, 1954 Cyclemaster
Ex:
'89(F) 340 GL F7R (ex B172k) - Fake -> SBKV 300 Runner Up 08, 12; '91(H) 340 GL B14.4E - Kar; '88(F) 360 GLT B200E - Jet -> BKV 300 Runner Up 09; '89(G) 360 GLT B200E - Beast
'03 S60 D5 SE, '91 (J) MX5, 1954 Cyclemaster
Ex:
'89(F) 340 GL F7R (ex B172k) - Fake -> SBKV 300 Runner Up 08, 12; '91(H) 340 GL B14.4E - Kar; '88(F) 360 GLT B200E - Jet -> BKV 300 Runner Up 09; '89(G) 360 GLT B200E - Beast
Re: Damn that blower gone again.
This sounds very interesting. You've been doing great work Mac. I have a couple of thoughts too. All the 'bench' testing was done with the motor inside the housing, but out in the open air. The inlet to the air box and the outlet were both unrestricted.
When they're installed in the car, you've got the bonnet scoop as the inlet, and the heater matrix and all the vents as the outlet. They must be offering at least some resistance to airflow and I would therefore suspect that the airflow is substantially reduced from your test rig under 'ideal conditions' so-to-speak. Would these restrictions cause the motor to 'freewheel' somewhat and therefore lower the current draw or would it cause a 'blockage' and stall the motor, raising the current draw?
The other thought, is the cutout switches and their cutout temperature. How is the spec formed? Is it an external spec or internal spec. Also, is there a maximum current spec and is the switching current momentarily going over spec whilst the motor speeds up?
Andy
When they're installed in the car, you've got the bonnet scoop as the inlet, and the heater matrix and all the vents as the outlet. They must be offering at least some resistance to airflow and I would therefore suspect that the airflow is substantially reduced from your test rig under 'ideal conditions' so-to-speak. Would these restrictions cause the motor to 'freewheel' somewhat and therefore lower the current draw or would it cause a 'blockage' and stall the motor, raising the current draw?
The other thought, is the cutout switches and their cutout temperature. How is the spec formed? Is it an external spec or internal spec. Also, is there a maximum current spec and is the switching current momentarily going over spec whilst the motor speeds up?
Andy
Re: Damn that blower gone again.
Good thought and I'm in agreeance, as I said when I fitted the Locost rad fan it's full voltage RPM dropped significantly between me having in in the lounge and bolted up to the heater matrix.pettaw wrote:and the heater matrix and all the vents as the outlet. They must be offering at least some resistance to airflow and I would therefore suspect that the airflow is substantially reduced from your test rig under 'ideal conditions' so-to-speak. Would these restrictions cause the motor to 'freewheel' somewhat and therefore lower the current draw or would it cause a 'blockage' and stall the motor, raising the current draw?
'89(G) 340 GLE B172k
'03 S60 D5 SE, '91 (J) MX5, 1954 Cyclemaster
Ex:
'89(F) 340 GL F7R (ex B172k) - Fake -> SBKV 300 Runner Up 08, 12; '91(H) 340 GL B14.4E - Kar; '88(F) 360 GLT B200E - Jet -> BKV 300 Runner Up 09; '89(G) 360 GLT B200E - Beast
'03 S60 D5 SE, '91 (J) MX5, 1954 Cyclemaster
Ex:
'89(F) 340 GL F7R (ex B172k) - Fake -> SBKV 300 Runner Up 08, 12; '91(H) 340 GL B14.4E - Kar; '88(F) 360 GLT B200E - Jet -> BKV 300 Runner Up 09; '89(G) 360 GLT B200E - Beast
Re: Damn that blower gone again.
Afternoon girls,
Haven't forgotten the heater resistor project - attacking from a slightly different angle - decided to build a variable load device (Otter tell me they tend to specify the G6 as "operates after xx secs. @ yy amps) so I'm going to find out exactly how a new resistor pack performs.
I've acquired a rather Art Deco 0.3 variable resistor which should give me a good 20A at 13vdc. By the look of it I suspect it originally came out of a 1930s death ray but it should do what I need. I've built it into a test rig and we shall see!
Does it work? - dunno - only just finished it - will find out tomorrow.
Before anybody asks "why the bulb" - belt and braces - the device is unknown so I've built in a safety in case of a dead short.
Mac.
Haven't forgotten the heater resistor project - attacking from a slightly different angle - decided to build a variable load device (Otter tell me they tend to specify the G6 as "operates after xx secs. @ yy amps) so I'm going to find out exactly how a new resistor pack performs.
I've acquired a rather Art Deco 0.3 variable resistor which should give me a good 20A at 13vdc. By the look of it I suspect it originally came out of a 1930s death ray but it should do what I need. I've built it into a test rig and we shall see!
Does it work? - dunno - only just finished it - will find out tomorrow.
Before anybody asks "why the bulb" - belt and braces - the device is unknown so I've built in a safety in case of a dead short.
Mac.
88 5door Redline 1.7 52k - 19 XC60 Momentum Pro D4 AWD 17k
1950 pair of legs that don't work very well.
1950 pair of legs that don't work very well.
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Re: Damn that blower gone again.
Yer big blouse!mac wrote:so I've built in a safety in case of a dead short.
Re: Damn that blower gone again.
I wouldn't worry about damaging the VR... would make a fairly good 240W electric fire though I'd have thought
'89(G) 340 GLE B172k
'03 S60 D5 SE, '91 (J) MX5, 1954 Cyclemaster
Ex:
'89(F) 340 GL F7R (ex B172k) - Fake -> SBKV 300 Runner Up 08, 12; '91(H) 340 GL B14.4E - Kar; '88(F) 360 GLT B200E - Jet -> BKV 300 Runner Up 09; '89(G) 360 GLT B200E - Beast
'03 S60 D5 SE, '91 (J) MX5, 1954 Cyclemaster
Ex:
'89(F) 340 GL F7R (ex B172k) - Fake -> SBKV 300 Runner Up 08, 12; '91(H) 340 GL B14.4E - Kar; '88(F) 360 GLT B200E - Jet -> BKV 300 Runner Up 09; '89(G) 360 GLT B200E - Beast
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- *** V3M DONOR ***
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Re: Damn that blower gone again.
Personally I'd rebuild the '30's Death ray and forget about the resistors......
Terms and conditions apply. This post may go down as well as up. Regulated by the Financial Services Authority. Hard hats to be worn. No reversing without a banksman. No admittance to unauthorized persons. Stop that. Put that down. Leave that alone.
Re: Damn that blower gone again.
Just for you Roo - the death ray in action,
Mac
Mac
88 5door Redline 1.7 52k - 19 XC60 Momentum Pro D4 AWD 17k
1950 pair of legs that don't work very well.
1950 pair of legs that don't work very well.
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- *** V3M DONOR ***
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Re: Damn that blower gone again.
V3M's militant wing's research facility is coming along nicely. Those Saab infidels will soon regret messing with us!
Does it go up to 11...?
cheers
James
Does it go up to 11...?
cheers
James
VOC 300-series Register Keeper
'89 740 Turbo Intercooler
'88 360 Turbo Intercooler
'85 360 GLT
'81 343 GLS R-Sport
'79 343 DL
'70 164
...and some modern FWD nonsense to get me to work...
'89 740 Turbo Intercooler
'88 360 Turbo Intercooler
'85 360 GLT
'81 343 GLS R-Sport
'79 343 DL
'70 164
...and some modern FWD nonsense to get me to work...
Re: Damn that blower gone again.
13 actually - using the revised warp scale!
Mac.
Mac.
88 5door Redline 1.7 52k - 19 XC60 Momentum Pro D4 AWD 17k
1950 pair of legs that don't work very well.
1950 pair of legs that don't work very well.
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- *** V3M DONOR ***
- Posts: 1204
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Re: Damn that blower gone again.
It still needs some knife switches and some large, round, bakelite gauges with needles with arrows on the end.
Terms and conditions apply. This post may go down as well as up. Regulated by the Financial Services Authority. Hard hats to be worn. No reversing without a banksman. No admittance to unauthorized persons. Stop that. Put that down. Leave that alone.
Re: Damn that blower gone again.
Give me a few days and we can sort knife switches... I'll have some nixie tubes somewhere for the upper class look?
(oooh, on that note, I was in a workshop not long ago and found a Bridgeport with a nixie tube DRO. You have no idea (well, you probably do) just how excited I may have become)
(oooh, on that note, I was in a workshop not long ago and found a Bridgeport with a nixie tube DRO. You have no idea (well, you probably do) just how excited I may have become)
'89(G) 340 GLE B172k
'03 S60 D5 SE, '91 (J) MX5, 1954 Cyclemaster
Ex:
'89(F) 340 GL F7R (ex B172k) - Fake -> SBKV 300 Runner Up 08, 12; '91(H) 340 GL B14.4E - Kar; '88(F) 360 GLT B200E - Jet -> BKV 300 Runner Up 09; '89(G) 360 GLT B200E - Beast
'03 S60 D5 SE, '91 (J) MX5, 1954 Cyclemaster
Ex:
'89(F) 340 GL F7R (ex B172k) - Fake -> SBKV 300 Runner Up 08, 12; '91(H) 340 GL B14.4E - Kar; '88(F) 360 GLT B200E - Jet -> BKV 300 Runner Up 09; '89(G) 360 GLT B200E - Beast
Re: Damn that blower gone again.
Last edited by S10NPH on 15 Jul 2013 10:08 am, edited 1 time in total.
1977 Volvo 343 DL 1.4 Vario TUJ 247R
1980 Volvo 345 DL 1.4 PGH 590V
1981 Volvo 345 DL 1.4 ECR 312W
1985 Volvo 340 DL 1.4 Vario B168 DTU
1982 Volvo 245 GLT 2.3 Auto VKN 137X
1997 Saab 900 Convertible P290 DDF and 2018 VW Tiguan S10 NPH
1980 Volvo 345 DL 1.4 PGH 590V
1981 Volvo 345 DL 1.4 ECR 312W
1985 Volvo 340 DL 1.4 Vario B168 DTU
1982 Volvo 245 GLT 2.3 Auto VKN 137X
1997 Saab 900 Convertible P290 DDF and 2018 VW Tiguan S10 NPH
Re: Damn that blower gone again.
Oh wow, a Bridgeport with nixie tube readouts -
Was it also steam powered, or perhaps by a small child from the village in a treadmill?
Was it also steam powered, or perhaps by a small child from the village in a treadmill?
88 5door Redline 1.7 52k - 19 XC60 Momentum Pro D4 AWD 17k
1950 pair of legs that don't work very well.
1950 pair of legs that don't work very well.
Re: Damn that blower gone again.
No... though was in a full sized steam train workshop...
'89(G) 340 GLE B172k
'03 S60 D5 SE, '91 (J) MX5, 1954 Cyclemaster
Ex:
'89(F) 340 GL F7R (ex B172k) - Fake -> SBKV 300 Runner Up 08, 12; '91(H) 340 GL B14.4E - Kar; '88(F) 360 GLT B200E - Jet -> BKV 300 Runner Up 09; '89(G) 360 GLT B200E - Beast
'03 S60 D5 SE, '91 (J) MX5, 1954 Cyclemaster
Ex:
'89(F) 340 GL F7R (ex B172k) - Fake -> SBKV 300 Runner Up 08, 12; '91(H) 340 GL B14.4E - Kar; '88(F) 360 GLT B200E - Jet -> BKV 300 Runner Up 09; '89(G) 360 GLT B200E - Beast