Date stamp

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Bosheff
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Re: Date stamp

#16

Post by Bosheff » Sat Aug 04, 2018 11:15 am

It appears that the upper tank mount has been replaced at some point in time. I suppose it is possible the steering dampner stud could have been removed also....bosheff



Redspanheads
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Re: Date stamp

#17

Post by Redspanheads » Sat Aug 04, 2018 1:36 pm

I’ll check on the forging numbers and post.

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Re: Date stamp

#18

Post by Redspanheads » Wed Aug 08, 2018 8:50 pm

The boss you pointed to is unmachined and I can’t any numbers on that casting. As pictured below there is a
48 7?? On a lower castin. Also on rear there is an xe6 and xe7. Lastly on tube for brake shaft there is an xe624 embossed. Thanks for the help.

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Re: Date stamp

#19

Post by Redspanheads » Wed Aug 08, 2018 8:53 pm

Redspanheads wrote:
Wed Aug 08, 2018 8:50 pm
The boss you pointed to is unmachined and I can’t see any numbers on that casting. As pictured below there is a
48 7?? On a lower casting. Also on rear there is an xe6 and xe7. Lastly on tube for brake shaft there is an xe624 embossed. Thanks for the help.
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Speeding Big Twin
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Re: Date stamp

#20

Post by Speeding Big Twin » Thu Aug 09, 2018 12:18 pm

The unmachined boss may indicate the steering head is early-1948. As I mentioned above, the section immediately after the boss may have been welded on or repaired etc. The boss however may be original to the frame or at least to that steering head. Apparently the boss wasn’t machined until mid-48 and it wasn’t until late-48 that a pin was installed in it.

Your sidecar loop may have forging number 48E-761. Next there appears to be a small round forging hallmark and then a die number. Hard to tell from the photo but is it 2? Even if it is, it may not help much.

Your other sidecar loop may have forging number 48E-762, a small round forging hallmark and then a die number. What is the die number?

XE-6 and XE-7 on your axle clips are fine. After them you may see forging hallmark DIF (inside a square) and then there may be a die number. What are the die numbers?

XE-624 behind the rear engine mount is normal. Above 624 you may see forging hallmark DIF and to its right there may be a die number. What is the die number?

Also look under the forging near the top of the seat post. On one side (underneath) you may find forging number 48E-1. On the other side (underneath) you may find a small round forging hallmark and a die number. What is the die number?
Eric

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Re: Date stamp

#21

Post by Redspanheads » Mon Aug 13, 2018 3:07 am

"Your other sidecar loop may have forging number 48E-762, a small round forging hallmark and then a die number. What is the die number?

Unfortunately I can't read the die numbers on the sidecar loops. Powder coated it too soon I guess.

XE-6 and XE-7 on your axle clips are fine. After them you may see forging hallmark DIF (inside a square) and then there may be a die number. What are the die numbers?

I can see the DIF and what appears to be a 10 after it on the axle clip.

XE-624 behind the rear engine mount is normal. Above 624 you may see forging hallmark DIF and to its right there may be a die number. What is the die number?

I can read the DIF and a 5 after it next to the XE-624.

Also look under the forging near the top of the seat post. On one side (underneath) you may find forging number 48E-1. On the other side (underneath) you may find a small round forging hallmark and a die number. What is the die number?

Under the forging at the seat post there is a 48E-1 on one side and a circle with a 2 after it on the opposite side.

The best I can do. Thank you for all the insight Speeding Big Twin.
Craig

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Re: Date stamp

#22

Post by Speeding Big Twin » Mon Aug 13, 2018 4:54 pm

You're welcome Craig. For the R-H axle clip Bruce Palmer’s chart has 6 and 7 for 1948 and 8 for 1949–50. Also for 1950 he has 9. And he has 9 again for 1951 and some other years. He doesn’t list 10 on the R-H clip until 1954 S-L frames.

Therefore if you have 10 on an axle clip then I imagine it is the left clip? For the left clip Palmer has 5, 6, 7 and 8 for 1948. I have photos of 9 on the left clip for 1948–49. Palmer has 12 for 1949. He has no 10 but I imagine 10 could apply to 1948 and/or 1949.

For the rear engine mount I have 4 for 1948 and so does Palmer. For 1949 he has 5 but when did it first appear? I don’t know exactly so maybe it was also used for 1948?

Under the forging near the top of the seat post Palmer has 1 for 1948 and 2 for 1949. But again I don’t know when the change occurred. And at times there is some overlap in forgings.

It seems you have either a 48 frame or a 49. But if that unmachined boss on the steering head is original to the frame then it indicates early-48, as I mentioned above.

Also notice no-one posted evidence of a 1952 date code on a Harley frame.
Eric

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Re: Date stamp

#23

Post by Redspanheads » Tue Aug 14, 2018 12:27 am

You are correct the 10 (and definitely a 10) is on the left axle clip. Thanks again.

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Re: Date stamp

#24

Post by Redspanheads » Tue Aug 14, 2018 2:47 am

not the best picture but posted for your info Eric.
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Speeding Big Twin
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Re: Date stamp

#25

Post by Speeding Big Twin » Tue Aug 14, 2018 2:57 pm

Thanks for the photo. That's another piece we can add to the chart.
Eric

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