Baby bosch racing magneto for harley or Indian?

[26harleyj]

Hi everyone,

I'm not sure if i am posting this in the correct place but I just picked up this baby bosch magneto and was wondering if anyone can tell me if it is either for a Harley or Indian or could it possibly not be a racing magneto?

Thanks,

James

IMAG3502.jpgIMAG3503.jpgIMAG3504.jpgIMAG3505.jpgIMAG3506.jpg

[23JDCA 808]

A google search:
http://www.antiquemotorcycle.org/bbo...gneto-question
Literature; search for FFV
http://www.go-faster.com/BoschMagnetoVeteran.html

[RichO]

42 degree is Indian, 45 degree is H-D

[BoschZEV]

if anyone can tell me if it is either for a Harley or Indian

Many, but not all, Bosch magnetos have the firing angle they left the factory with stamped on them. But, I can't see it in any of your pictures and, in any case, that was ~100 years ago so the cam easily could have been changed since then. Unfortunately, it isn't possible to distinguish a 42-deg. cam from a 45-deg by naked eye.

[26harleyj]

Thank you for the replies. I did look all over the mag and could not find the firing angle stamped into the body of the magneto. If i put a degree wheel on the nose of the drive shaft of the magneto, can i determine if it is a 42-deg or a 45-deg?

23JDCA 808---Those links were quite helpful thanks but still seems undetermined if this is a racing magneto or not?


Thanks,


James

[rwm]

i see this style on beemers. the harley and indian ff magnetos have 2 magnets not one large magnet. they also lack the plastic retaining strap by the wires. this dose not mean it wont work for you. it's just a few years newer. the ff mags make a little hotter spark then the zevs. i have no clue if it is better to have 1 magnet or 2.

[MMasa]

The FFV "baby Bosch" units were standard equipment on 1927-1929 Harley mag model big twins. All of mine have one magnet.
Mark Masa

[26harleyj]

Mark, thank you for the clarification for the correct application of this magneto.

Thanks,

James

[BoschZEV]

If i put a degree wheel on the nose of the drive shaft of the magneto, can i determine if it is a 42-deg or a 45-deg?

If you go to the following link you will find my discussion (under the screen name Magnetoman) of measuring the cam to determine the angle between the lobes:

http://www.britbike.com/forums/ubbth...849#Post459849

When you click on the above it initially will go to the first page of the thread so just sit on you hands for 5 sec. or so until it jumps to the correct post.