Jim's Speed Twin Build

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Amazingly, immediately after I wrote the above post, I found this for sale on eBay...
 
Clever and nice job dishing the new cover.
Just throwing this out there:
Some people "solve" the "problem" of the Yamaha badging on the clutch cover by milling down the entire cover until the lettering is completely erased. I think that much thinning results in a cover that is a bit dicey. However, if you look at the back of the clutch cover, you will see that the casting thickness is increased right where the lettering goes.

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My idea has always been to just mill right where the lettering is, and then extend it back, resulting in a racing stripe effect. Another one of those ideas that I will surely never get to...
A few examples out there...

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This tank has a late 60`s early 70`s "Lace" paint job. It`s priceless. (Has no value at all):shrug:. I can`t find any dents and inside is pretty decent.:thumbsup:.
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Damn Phil, looks close enough for the girls I go out with. Sold!:D
A little tap tap here and a tig tig there.... prefect.
 
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Piddlin' (cont)
Chucked the faux cover up in the lathe to fine tune it. Set the cross slide at 90° and increased it in 1° increments on each pass. Wound up +11° at the edge... whew... Hit it with a blue Roloc disk to remove the tooling marks... ready for fine sanding and polish. I'll have to round off the edge by hand, but first I want to cut the inside so it lays flush on the compound curve of the sidecover.
Not bad for a wobbly ol' hack with a wobbly ol' Atlas wot's older than he is. :rolleyes:

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Nice work Jim! How will you fasten?
Thanks!
Not sure yet. Trying to decide on 2 or 3 hole pattern. Options are either rivet it with flush rivets and polish 'em so it looks it was cast in or screws. Flat head screws would be more in keeping with the 40's-50's theme instead of allens, jis or phillips. I'm hoping there's enough meat on the sidecover to tap the holes and not need nuts on the inside. Whichever way I go the fasteners will be installed wet with JB Weld for oil proofing. Decisions decisions.... :umm:
 
Thanks!
Not sure yet. Trying to decide on 2 or 3 hole pattern. Options are either rivet it with flush rivets and polish 'em so it looks it was cast in or screws. Flat head screws would be more in keeping with the 40's-50's theme instead of allens, jis or phillips. I'm hoping there's enough meat on the sidecover to tap the holes and not need nuts on the inside. Whichever way I go the fasteners will be installed wet with JB Weld for oil proofing. Decisions decisions.... :umm:
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MikesXS used to sell these covers, one of which was already on the Texas Scorcher when I bought it. Countersunk holes with allen-head bolts. Holes are drilled and tapped in the case cover, no nuts on the inside. Thread sealant applied to the threads. The thickness of the case cover is pretty minimal, but the bolts aren't holding very much, and there's not a lot of pressure inside the case to hold in. Trying to avoid nuts on the inside is a good idea. Especially if your holes end up inside the clutch basket perimeter. When you pull in the clutch lever, there is like zero clearance between the clutch pressure plate and the case cover.
Check out the reflection of my emergency back-up El Camino, a 1974, in the cover.
 
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I sure wish you`d do another run of those temperature gauge dip sticks. I should have bought one when I first joined this forum.:( My 82 back up El Camino just turned over 456K this week. I`m going to get 1/2 million out of it even if I have to push the damn thing.:thumbsup: I covered up the "Yamaha" with the same cover as on the alternator. 2 stainless screws with red locktite. Ground flush on the inside.
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When Mike Davis put this bike together he ground the YAMAHA off the right side engine cover. At the local motorcycle resort (TWO) on a usual busy weekend, the bike attracted some attention as you might expect. I distinctly heard someone say, "Cherokee Scout. I remember those."
 
Now We're Cookin'...
Picked up a sheet of 1/16" brass from the local hobby store and went to hackin'....

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After copious amounts of filing and sanding....



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Dished out a piece of wood and used a wood hammer to form it...



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3mm brass screws to fasten it...



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...and here we are, the official Jim's Motorcycle Company logo. :smoke:
:laughing:


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Think I'll look for some flat head brass screws. One down, one to go.
 
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