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Old 09-21-2015, 03:22 AM   #161
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Default Re: Angry Monkey Motorcycles, "unleashed" pre unit build.

I was looking at the machine marks on your stainless brake adjuster knob. I can tell the reliefs in the outer diameter were mad by plunge cutting an end mill, probably four flute and I'm thinking HSS. My question is how are you clocking your holes and these relief cuts? Dividing head? Or rotating head? Or simply a degreed vise holding a fixture with the part centered over the pivot? Not a real important question, but I'm always interested in how other machinists get over hurdles like this.
Really nice work as always
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Old 09-21-2015, 07:21 AM   #162
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Default Re: Angry Monkey Motorcycles, "unleashed" pre unit build.

May have sussed the problem, I have the 30 mm belt and pulley not the 25mm - DOH!! That extra 5 mm will make a lot of difference!!
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Old 09-21-2015, 08:26 AM   #163
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Default Re: Angry Monkey Motorcycles, "unleashed" pre unit build.

Chewy
As i said in the PM i sent you.
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Old 09-21-2015, 10:48 AM   #164
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Default Re: Angry Monkey Motorcycles, "unleashed" pre unit build.

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Chewy
As i said in the PM i sent you.
Apologies, missed that completely! I have spoken with Bob, but before spending any more, I'm going to have a look at a little bit of machining of the pulley and a new securing nut. Thanks for the assistance.
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Old 09-21-2015, 10:58 AM   #165
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Default Re: Angry Monkey Motorcycles, "unleashed" pre unit build.

He did mine and a new belt
call him send it back
pully came back like new.
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Old 09-21-2015, 11:26 AM   #166
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Default Re: Angry Monkey Motorcycles, "unleashed" pre unit build.

Quote:
Originally Posted by Dan Boy View Post
It is almost a shame to hide that beautiful clutch under the cover but the stators always look so ugly, shame there isn't a "good" looking stator that would persuade me to run the primary open.
BTW, love the carb and throttle ferrels.
Dan.
Thanks Dan. Yes, Triumph have the UGLIEST stator setup ever. It begs to be hidden. I will be cutting this cover to vent/show the BNR at a later time. At least this time the cover itself, which is a one-off item, covers both the stator and clutch with some style.

Quote:
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Very informative Dan, thanks for sharing. Great work, its easy to see you are a seasoned builder that knows what he's doing.
Lester
Too kind, Thanks!

Quote:
Originally Posted by KCgran View Post
I was looking at the machine marks on your stainless brake adjuster knob. I can tell the reliefs in the outer diameter were mad by plunge cutting an end mill, probably four flute and I'm thinking HSS. My question is how are you clocking your holes and these relief cuts? Dividing head? Or rotating head? Or simply a degreed vise holding a fixture with the part centered over the pivot? Not a real important question, but I'm always interested in how other machinists get over hurdles like this.
Really nice work as always
Thanks! I use a degree/rotating head to drill and scallop those knobs.

Quote:
Originally Posted by Chewy750 View Post
May have sussed the problem, I have the 30 mm belt and pulley not the 25mm - DOH!! That extra 5 mm will make a lot of difference!!
5mm is huge in this situation. Maybe BNR would swap your 30mm for the 25mm setup. It would be worth a phone call.
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Old 09-21-2015, 12:44 PM   #167
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Default Re: Angry Monkey Motorcycles, "unleashed" pre unit build.

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I use a degree/rotating head to drill and scallop those knobs.
Dan, is that the same as a dividing head?
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Old 09-21-2015, 01:18 PM   #168
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Default Re: Angry Monkey Motorcycles, "unleashed" pre unit build.

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I've shaved down several pulleys for stator clearance and ordered a 20m/m wide belts for pre-unit alternator bikes.

McMaster Carr has a bunch of different lengths of 20 m/m wide belts,

http://www.mcmaster.com/#timing-belts/=z1clrh
Thanks Tony! That's good info for anyone with a BNR setup.
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Old 09-21-2015, 01:24 PM   #169
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Default Re: Angry Monkey Motorcycles, "unleashed" pre unit build.

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Dan, is that the same as a dividing head?
Both serve the same function. The difference is a dividing head has pre-drilled holes that a pin drops in to hold the work at a predetermined degree of rotation. A rotating head has no such detents, only a degreed tape around the head and a pointer on the base. The operator must do the math to stop the work any number of degrees of rotation.
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Old 09-21-2015, 02:42 PM   #170
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Default Re: Angry Monkey Motorcycles, "unleashed" pre unit build.

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Originally Posted by supercrouton View Post
5mm is huge in this situation. Maybe BNR would swap your 30mm for the 25mm setup. It would be worth a phone call.
Already looking into it, may buy another 30mm and just machine it slightly.
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Old 09-21-2015, 02:49 PM   #171
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Default Re: Angry Monkey Motorcycles, "unleashed" pre unit build.

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Originally Posted by supercrouton View Post
Both serve the same function. The difference is a dividing head has pre-drilled holes that a pin drops in to hold the work at a predetermined degree of rotation. A rotating head has no such detents, only a degreed tape around the head and a pointer on the base. The operator must do the math to stop the work any number of degrees of rotation.
A dividing head ,when trued properly to the axis, is slightly more accurate than a rotating head IMOP. A rotating head usually is equipped with a crank that allows you to make radii on a manual mill. But there is nothing wrong with how dan is using it either.
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Old 09-21-2015, 03:01 PM   #172
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Default Re: Angry Monkey Motorcycles, "unleashed" pre unit build.

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A dividing head ,when trued properly to the axis, is slightly more accurate than a rotating head IMOP. A rotating head usually is equipped with a crank that allows you to make radii on a manual mill. But there is nothing wrong with how dan is using it either.
You are 100% correct on the superior accuracy of a diving head. A dividing head can hit the desired positions effortlessly. I use a rotating head for this operation because, well, I have one
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Old 09-21-2015, 03:40 PM   #173
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Default Re: Angry Monkey Motorcycles, "unleashed" pre unit build.

In post #1 of this thread I stated that there would be something on this bike that has not existed (to my knowledge) to this point. Well, it is this finned primary cover set for swing arm, pre units. Well, and the alternator model finned timing cover too. Finding decent primary and timing covers is an ongoing hassle and it gets more expensive every year. So I figure if it's going to cost serious coin for a vintage cover that is in only decent shape, why not just make some that are better than stock. But, despite the fins, the best part in my opinion is the newly minted inner primary. It is so nice to NOT have to repair damage done for the past 50+ years, and to start off with a cover that is arrow-straight. Obviously, these are for dry primary only since I deleted the filler cap and bung, but that's the only way I will build a pre unit. These covers are prototypes and are slightly flawed, but the finished ones are close to production. Enjoy!



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Old 09-21-2015, 05:42 PM   #174
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Default Re: Angry Monkey Motorcycles, "unleashed" pre unit build.

And the sleeve opens, and from it he pulls......GLORIOUSNESS!!!!!
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Old 09-21-2015, 06:23 PM   #175
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Default Re: Angry Monkey Motorcycles, "unleashed" pre unit build.

Dan, those are sweet. So finny and awesome.

I see a new trend coming. Buy stock in angry monkey. Don't want to be sitting around like the other guys who say. "Should have bought stock in trojan condoms before HIV..."
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Old 09-21-2015, 08:19 PM   #176
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Default Re: Angry Monkey Motorcycles, "unleashed" pre unit build.

So are these cast? Or machined from billet?
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Old 09-22-2015, 03:23 AM   #177
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Default Re: Angry Monkey Motorcycles, "unleashed" pre unit build.

Oh my that finned primary is just a work of art ,very cool bit of kit.
I really like the exhaust as well.
Cheers R
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Old 09-22-2015, 04:26 AM   #178
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Default Re: Angry Monkey Motorcycles, "unleashed" pre unit build.

Dan, Let me know if and when these items will be for sale.
Very sweet! Your primary spacer had me to looking too.
Good stuff. Have you thought about finned motor mounts for pre unit too. To my novice knowledge these are only offered for Unit.

Lester
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Old 09-22-2015, 10:38 AM   #179
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Default Re: Angry Monkey Motorcycles, "unleashed" pre unit build.

Lester, don't want to speak out of turn but I believe Dan uses these finned motor plates from Joe at
Choppedtriumphs.com
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Old 09-22-2015, 11:24 AM   #180
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Default Re: Angry Monkey Motorcycles, "unleashed" pre unit build.

Breathtaking!
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