72 Interstate 750

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Cuppy said:
Les, you mention the normal stem thread was 3/8" UNF (24 tpi) but I am measuring a stem thread of 3/8" 20 tpi on the 4 new mirrors I have which seems to be an unusual thread count.
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Cuppy said:
Yes but all my new mirrors are 3/8" X 20. Confused on why they are if not standard for mirror threads. So would they be 3/8" BSF mirrors?
Click to expand...

Ok, as all the (fitted and spare) British bike mirror stems I have are 3/8" x 24 UNF.

If not BSF, could they be M10 x 1.25mm?
 
Cuppy said:
Yes but all my new mirrors are 3/8" X 20. Confused on why they are if not standard for mirror threads. So would they be 3/8" BSF mirrors?
Click to expand...
I have no idea, but the mirrors from AN are 3/8" x 24 and as far as I know that's what they have always been since the master cylinder was provisioned for a mirror. Where did you get the new mirrors?
 
L.A.B. said:
Ok, as all the (fitted and spare) British bike mirror stems I have are 3/8" x 24 UNF.

If not BSF, could they be M10 x 1.25mm?
Click to expand...
They could be and likely not British mirrors but I was trying to use what I had. I am not familiar with metric threads but I know that a 10mmF X 8MM M adapter screws right on. My thread gauge measures 20 tpi exactly so I think you may be right. I could probably try and find the correct mirror stem but striking out this side of the pond. Taps at 20 tpi are rare as well.
 
marshg246 said:
I have no idea, but the mirrors from AN are 3/8" x 24 and as far as I know that's what they have always been since the master cylinder was provisioned for a mirror. Where did you get the new mirrors?
Click to expand...
They were given to me so I was hoping to use them as just a stem from AN is pricey when shipping is added. Probably standard for Harleys or something.
 
RGM makes clutch and brake lever backs (in black or polished AL) that are threaded for mirrors.

www.rgmnorton.co.uk

EXTENDED CLUTCH LEVER HOLDER, BLACK

PAINTED BLACK LM4 ALUMINIUM ALLOY CLUTCH LEVER HOLDER. THE EXTENSION MOVES THE PIVOT POINT AWAY FROM THE HAND INCREASING THE LEVERAGE BY ABOUT 40% GIVING A
www.rgmnorton.co.uk
 
Haven't checked in on this post for a while sorry to see and hear about your luck. Where mirrors are involved other then building a original bike, bar end mirrors really look clean. But free is hard to beat!
 
I just had a rear tire put on and am attempting to install the wheel. My question has to do with the washer (# 21) between the drum and brake shoe. My understanding is that this should fit over the 1st step on the stub axle which it does but very sloppy. Should the inner diameter of the washer be close to the outer diameter of the stub axle?
 
www.baxtercycle.com

06-7603

Brake Plate Baking Washer, 13/16" x 1-1/4", Made in UK ( Alt # NME5276 )
www.baxtercycle.com www.baxtercycle.com
"Brake Plate Baking Washer, 13/16″ x 1-1/4″
 
I think I found the correct one in my box of parts. I am measuring .83" X 1.25" with a thickness of .003". Hard to tell from the pic on baxter cycle but it appears to be thicker. What I am quite sure of is that this is the one that came out.
 
Cuppy said:
They could be and likely not British mirrors but I was trying to use what I had. I am not familiar with metric threads but I know that a 10mmF X 8MM M adapter screws right on. My thread gauge measures 20 tpi exactly so I think you may be right. I could probably try and find the correct mirror stem but striking out this side of the pond. Taps at 20 tpi are rare as well.
Click to expand...
Re taps you might try a John Deer dealer as they have a mix metric and other threads
 
Can anyone recommend an appropriate, readily available (USA) 19" front tire for the stock WM2 rim? I have seen many threads suggesting not to use a 100/90 - 19 on a 1.85" rim.
 
In the short term, AVGAS, VP or Sunoco race fuel is all non-ethanol, so will be compatible with the glass tank and will do NO damage.
JMWO
 
Last edited:
concours said:
In the short term, AVGAS, VP or Sunoco race fuel is all bon-ethanol, so will be comparible with the glass tank and will do NO damage.
JMWO
Click to expand...
Thank you. Luckily I have access to non-ethanol fuel 25 miles from here for the short term. ($6/gal)
 
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