HID Project
02-05-09 | 12:17 PM
#2
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From: UK
The ballast has a web address on it: www.brightstar-hid.com.
Specs for the ballast are:
Voltage input DC 9V~16V
Normal Voltage Input 12.8 VDC
Normal Current Input 0.9A
Power Output 10 ± 5%
Maximum Current Input 16.2A
Operation Power DC 65 ± 12V
Operation Temperature -20°C~80°C
Storage Temperature -40°C~105°C
Efficiency over 85%
And as far as I can tell the bulb is a 12W MR-11 10° (35mm diameter).
Specs for the bulb are:
Operation Voltage DC 65V ± 12V
Wattage 10.5W ± 0.5W
Current Input 0.9A
Output (Luminance) 550lm
Color Temperature 6000K
Life Span(hrs) over 1000 hrs
With UV-cut shield YES
I've just carried out a runtime test using a 8 cell 3700 mAh sub-c nimh pack.
The HID sustained full brightness for exactly 2.5 hours and voltage at the battery started at 10.65V (under load) and the ballast shut off when the voltage dropped to between 8V and 8.5V (under load).
Light output seemed to be adequate and more floody than I expected.
Specs for the ballast are:
Voltage input DC 9V~16V
Normal Voltage Input 12.8 VDC
Normal Current Input 0.9A
Power Output 10 ± 5%
Maximum Current Input 16.2A
Operation Power DC 65 ± 12V
Operation Temperature -20°C~80°C
Storage Temperature -40°C~105°C
Efficiency over 85%
And as far as I can tell the bulb is a 12W MR-11 10° (35mm diameter).
Specs for the bulb are:
Operation Voltage DC 65V ± 12V
Wattage 10.5W ± 0.5W
Current Input 0.9A
Output (Luminance) 550lm
Color Temperature 6000K
Life Span(hrs) over 1000 hrs
With UV-cut shield YES
I've just carried out a runtime test using a 8 cell 3700 mAh sub-c nimh pack.
The HID sustained full brightness for exactly 2.5 hours and voltage at the battery started at 10.65V (under load) and the ballast shut off when the voltage dropped to between 8V and 8.5V (under load).
Light output seemed to be adequate and more floody than I expected.
02-08-09 | 08:20 AM
#4
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From: Ann Arbor, MI
Bikes: 1980 Masi, 1984 Mondonico, 1984 Trek 610, 1980 Woodrup Giro, 2005 Mondonico Futura Leggera ELOS, 1967 PX10E, 1971 Peugeot UO-8
Very cool!
You need to consider radiating excess heat in this design. The efficiency of an HID bulb is around 50% give or take, and the bulb input power (same as ballast output power) is in this case around 10 watts. So the waste heat generated in the bulb is 5 watts.
The problem isn't as severe as with a 5 watt LED because the heat transfer requirement is not as stringent, but I think it could still heat up and distort.
The electrical and temperature specs look automotive.
You need to consider radiating excess heat in this design. The efficiency of an HID bulb is around 50% give or take, and the bulb input power (same as ballast output power) is in this case around 10 watts. So the waste heat generated in the bulb is 5 watts.
The problem isn't as severe as with a 5 watt LED because the heat transfer requirement is not as stringent, but I think it could still heat up and distort.
The electrical and temperature specs look automotive.
02-08-09 | 09:05 AM
#5
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From: UK
Very cool!
You need to consider radiating excess heat in this design. The efficiency of an HID bulb is around 50% give or take, and the bulb input power (same as ballast output power) is in this case around 10 watts. So the waste heat generated in the bulb is 5 watts.
The problem isn't as severe as with a 5 watt LED because the heat transfer requirement is not as stringent, but I think it could still heat up and distort.
The electrical and temperature specs look automotive.
You need to consider radiating excess heat in this design. The efficiency of an HID bulb is around 50% give or take, and the bulb input power (same as ballast output power) is in this case around 10 watts. So the waste heat generated in the bulb is 5 watts.
The problem isn't as severe as with a 5 watt LED because the heat transfer requirement is not as stringent, but I think it could still heat up and distort.
The electrical and temperature specs look automotive.
Here are the main possiblities for an enclosure:
Spice jar with clear lid (just happens to be the right size).
D cell extension tube from Maglite copy.
Length of black waste pipe which is an exact fit on the ballast.
A trip to Maplin yielded:
Last edited by Unknown Cyclist; 02-21-09 at 12:02 PM.
02-10-09 | 12:57 PM
#6
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From: UK
Cost so far:
Ballast & HID bulb £31
Switch £1.99
6A Figure 8 cable £1.09
Deal Extreme Handlebar Mount (sku15342) $3.98
I was given the black silicon, black plastic pipe, spice jar and D cell extension tube.
The batteries I already have and originally cost about £20 each.
Ballast & HID bulb £31
Switch £1.99
6A Figure 8 cable £1.09
Deal Extreme Handlebar Mount (sku15342) $3.98
I was given the black silicon, black plastic pipe, spice jar and D cell extension tube.
The batteries I already have and originally cost about £20 each.
02-10-09 | 01:03 PM
#7
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From: UK
More items for the HID build.
Black heavy duty silicon:
Likely candidates for powering the HID:
NIMH 8 cell 3700 mAh 2 hrs 30 mins (continuous) runtime 515g
Lipo 3S 2200 mAh 1 hr 35 mins (continuous) runtime 176g
Doner handlebar bracket from DX:
Black heavy duty silicon:
Likely candidates for powering the HID:
NIMH 8 cell 3700 mAh 2 hrs 30 mins (continuous) runtime 515g
Lipo 3S 2200 mAh 1 hr 35 mins (continuous) runtime 176g
Doner handlebar bracket from DX:
Last edited by Unknown Cyclist; 02-21-09 at 12:03 PM.
02-12-09 | 04:09 AM
#8
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From: UK
I visited Plumbase to see if they have anything about the size of the HID ballast:
40mm polypipe straight coupler
40 mm polypipe socket plug
Syphon washer
= £2.68
40mm polypipe straight coupler
40 mm polypipe socket plug
Syphon washer
= £2.68
Last edited by Unknown Cyclist; 02-21-09 at 12:04 PM.
02-12-09 | 09:05 AM
#9
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Joined: Nov 2006
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From: NJ, NYC, LI
Bikes: 1940s Fothergill, 1959 Allegro Special, 1963? Claud Butler Olympic Sprint, Lambert 'Clubman', 1974 Fuji "the Ace", 1976 Holdsworth 650b conversion rando bike, 1983 Trek 720 tourer, 1984 Counterpoint Opus II, 1993 Basso Gap, 2010 Downtube 8h, and...
02-12-09 | 11:29 AM
#10
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From: UK
Mount bolted on & syphon washer siliconed in place:
Switch and cable out fitted in tailcap:
Assembled body:
Completed lamp:
Fitted to bars:
Switch and cable out fitted in tailcap:
Assembled body:
Completed lamp:
Fitted to bars:
Last edited by Unknown Cyclist; 02-21-09 at 12:05 PM.
