ER Speed Changer

[e2512]

I was rebuilding a speed changer over the weekend and was hit with a question that I'm sure has been answered but I can't find it. Is the adjustment screw supposed to be behind the ears or in front of them? I know it works either way I'm just wondering if any has seen a original one that hasn't been taken apart.

Also, there are two different speed setting plates. One is 1-8 and the other is 1-5. Which one came first? If my memory is correct the 1-8 came first and was changed to 1-5 after a year. Am I correct?

Tom

[fredsheldon]

IMG_1805.JPG (100.3 KiB) Viewed 20988 times

Does this answer your question?
Fred

[rpd]

I was rebuilding a speed changer over the weekend and was hit with a question that I'm sure has been answered but I can't find it. Is the adjustment screw supposed to be behind the ears or in front of them? I know it works either way I'm just wondering if any has seen a original one that hasn't been taken apart.

Also, there are two different speed setting plates. One is 1-8 and the other is 1-5. Which one came first? If my memory is correct the 1-8 came first and was changed to 1-5 after a year. Am I correct?

Tom

The adjustment screw will work in either position, and some of the early documentation shows it mounted to the right side but all the later documentation shows it mounted to the left. The advantage of it being mounted on the left is that it is farther from the headstock lock lever and therefore less likely to interfere.

speedchangerpully.jpg (23.84 KiB) Viewed 20967 times

Yes, the early (1-8) speed changers have a floating sheave like the one on the left in the photo, this allowed the belt to contact and wear the shaft. On the later (1-5) speed changers the sheave is like the one on the right and prevents the belt/shaft contact.

[e2512]

Thanks for the answers!

[chapmanruss]

Tom,

You asked

I was rebuilding a speed changer over the weekend and was hit with a question that I'm sure has been answered but I can't find it. Is the adjustment screw supposed to be behind the ears or in front of them? I know it works either way I'm just wondering if any has seen a original one that hasn't been taken apart.

As Ron said the answer is either. Attached below are two different instructions for the Speed Changer made at different times and they show the adjustment screw both ways depending on which instruction sheet you use.

Variable Speed Changer 131-21-1149.PDF

I believe the first instructions released

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Variable Speed Changer 01-53 2p plus troubleshooting.pdf

I believe the last ones produced

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Ron,
Thanks for the picture of the different floating pulley parts. I have not seen the early one before although I have had the 0 - 8 indicators on a couple of the ones I have restored. It appears first the Pulley parts were changed than the indicator from 0 - 8 to 0 - 5. Ron, do you know if the early Floating Pulley range did go from 0 to 8 or was 6 to 8 always extra numbers? I know with the later Pulley they are extra so were discontinued. Also, all the speed charts I have seen only use 0 to 5.

Speed Changer Chart.pdf

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Thanks again for the picture Ron. I like learning new things.

[Dansmith]

Glad I came across this thread. On one of my 2 10 ers', I was having some interference between the crank handle and the headstock locking lever when going to the lower speeds. I compared it to my other 10er with no interference problems, and noticed the interfering one had the crank on the right side and the non interfering one had it on the left side. Switched it over easily, and no more interference issues. Thanks.

[chapmanruss]

This got me wondering which way the 11 speed changers I have or have had were positioned. I checked the pictures of the Model 10's before restoration. The speed changers that came on Model 10ER's I have owned had the crank on the right closest to the headstock on serial numbers under 60000. The speed changers on model 10ER's with serial numbers above 60000 came with the crank on the left. I found it interesting there was such a division between right and left ones since the speed changer was an accessory and not necessarily purchased at the same time as the Model 10's. None of the 7 Model 10E's I have owned came with a speed changer.

[rpd]

Ron,
Thanks for the picture of the different floating pulley parts. I have not seen the early one before although I have had the 0 - 8 indicators on a couple of the ones I have restored. It appears first the Pulley parts were changed than the indicator from 0 - 8 to 0 - 5. Ron, do you know if the early Floating Pulley range did go from 0 to 8 or was 6 to 8 always extra numbers? I know with the later Pulley they are extra so were discontinued. Also, all the speed charts I have seen only use 0 to 5.

Thanks again for the picture Ron. I like learning new things.

Russ, I got that photo from the Yahoo Shopsmith10ERusers forum. I think it was Skip that posted it, It is worthwhile to go through the Photos section on that forum as he has also posted other pictures showing different versions of other parts like the carriage and shaper fences etc.

I have two speed changers and they are both 0-5, I believe I read in an old post that the speed range(s) were the same on both versions.

[JPG]

. . .

I have two speed changers and they are both 0-5, I believe I read in an old post that the speed range(s) were the same on both versions.

Until one adjusts above 5. With the older one that is possible.

FWIW, Belt adjustments(motor height etc.) will alter the resultant speeds.

One reason the scale is adjustable to account for belt length.

[chapmanruss]

Did you know that without the Speed Changer you are not limited to only 3 speeds but can have 7? See attached chart.

Table of Speeds Model 10s.pdf

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