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Message started by Jay on 06/18/08 at 05:16:44

Title: lighting question
Post by Jay on 06/18/08 at 05:16:44

Hi Group,
Back on 04/22/08, Jerry Eichenberger posed the question of replacing the stock headlight and taillight. Amoung the responses for the taillight, I kept seeing the number 2397 as a replacement tail. Well I got the bug to do the job at about 2AM; so with Walmart as my only option I set out. Try as I might, there was no 2397. There was a 2357, so I put that in.

Has anyone had any experience running that bulb? Stock is a 12v, 21/5w. It has no other markings on it, but looks like a 1157. My replacement is 12.8/14v, 28/8.3w. The new bulb seems quite a bit brighter. I ran it in about 50 miles, at about 60-65mph, before the cagers packed the slab for morning rush. It seemed to do fine. Still, I'm no electrical genius, so I could use some advice. I don't need to start blowing fuses. Thanks.
Ride safe,
Jay

Title: Re: lighting question
Post by Gary On A Savage on 06/18/08 at 08:56:08

Google search turned this up...

Quote:

On bikes that use a 1157 tail/brake combination bulb, a simple and inexpensive upgrade in the brake light illumination is readily available.

A 2357 tail/brake combination bulb, available at any auto parts store, will produce the same brightness for the tail light (3 lumens), but will produce 25% greater brightness for the brake light (40 lumens vs. 32 lumens).

The volts required to power the 2357 bulb are the same as the 1157, but there is a slight increase in the amps required (2.1 for the 1157, 2.2 for the 2357). The resulting increase in watts used is only 1.28 watts, or a 4.76% increase over the standard 1157 bulb.

The only draw back to using the 2357 bulb is the rated hours of service for the brake light element is much less (400 hours for the 2357 brake light element vs. 1,200 hours for the 1157 brake light element). The tail light element in both the 1157 and the 2357 are rated at 5,000 hours. Assuming one rides 4 hours per day, 365 days per year and uses his/her brake 25% of the time, if the brighter 2357 bulb is replaced annually, there should be little chance of in-service failure.

Cost for a 2357 bulb is about 97 cents.

http://www.ibmwr.org/ktech/taillite.shtml

Title: Re: lighting question
Post by Jay on 06/18/08 at 14:04:43

Gary On A Savage,
Thanks for the response. For the price, I think I'll stick with the 2357 and just change it out more frequently. No mention of blown fuses or the like, so that's a relief. Thanks again.
Ride safe,
Jay