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Author Topic: 1960 Sportsman  (Read 23416 times)

Ricks

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Re: 1960 Sportsman
« Reply #30 on: August 18, 2014, 10:12:59 AM »
Quote from: Bruce on August 18, 2014, 09:23:39 AM
Someone posted a pic on my Facebook simplex page...looks like you had this at Portland?  Looks great

Yes, unfortunately it is not yet running.  I had a problem with the crankshaft and Wayne is making me a new one.
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Rick

pd

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Re: 1960 Sportsman
« Reply #31 on: August 20, 2014, 10:13:25 AM »
Wasn't that suppose to have been done already , Rick ?
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Ricks

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Re: 1960 Sportsman
« Reply #32 on: August 20, 2014, 10:17:13 AM »
Quote from: pd on August 20, 2014, 10:13:25 AM
Wasn't that suppose to have been done already , Rick ?

Wayne's machinist had a bicycle accident and broke his collar bone.  He just got back to work and hopefully he can get the crank made soon.

Pete, get to Portland next year and you can ride it!
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Rick

pd

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Re: 1960 Sportsman
« Reply #33 on: August 20, 2014, 10:48:13 AM »
That's almost sounds like a bribe , Rick . :D

I'm planning on being there next year even if your Sportsman isn't done .

I have to dig my bike out of storage . I've been designing a few changes and need the bike at hand for final measurements / fittings and such .

I really miss having a shop for my tinkering . :(

Pete . :)
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kartjockey

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Re: 1960 Sportsman
« Reply #34 on: September 24, 2014, 01:38:40 PM »
Has Lunati completed your 5-axis cnc'd crank yet!?  LoL
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Ricks

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Re: 1960 Sportsman
« Reply #35 on: September 24, 2014, 01:51:04 PM »
I spoke with Wayne last week and he assured me we are getting close.  I would really like to ride it before the snow comes along!
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Rick

Ricks

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Re: 1960 Sportsman
« Reply #36 on: November 18, 2014, 07:33:41 AM »
I know it's been 2 months since I have updated this thread, but I spoke with Wayne this morning and my crank is finally done!!  I will post a picture when it gets here, so you can see how he attaches a new shaft to an original counterweight.  With a little luck, I should have this running in a couple of weeks.
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Rick

pd

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Re: 1960 Sportsman
« Reply #37 on: November 18, 2014, 07:41:09 AM »
'so you can see how he attaches a new shaft to an original counterweight.'

That ^ should be interesting . I'll just guess he used super glue . ;)

How long did that new crank take to build or rebuild ?

Pete . :)
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Ricks

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Re: 1960 Sportsman
« Reply #38 on: November 18, 2014, 07:54:02 AM »
I ordered it in July.  His machinist had an accident, and was out of work for a long while.  When he got back to work, this was not a top priority job.  Wayne had a run of regular cranks made, as well as a few sportsman cranks, so if anyone needs one, they are now in stock.

Years ago, Wayne had some billet cranks made, but they were expensive.  He had been putting new shafts into original counterweights for several years now with good results.  I believe the process he uses is furnace brazing to make the connection.
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Rick

pd

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Re: 1960 Sportsman
« Reply #39 on: November 18, 2014, 09:04:58 AM »
I can only imagine the cost of those billet cranks ... But , you'd never have to worry about them coming out of balance . I suppose there shouldn't be much concern about his brazed cranks ever loosing balance either ( as long as the brazing holds , anyway ) .

Not to jack your thread , Rick , but the subject of crank weight to ease vibration and improve efficiency popped into mind . I know some have toyed with that , but I don't recall what the final result was , if any . Or is that something that is still 'in the lab' ?

Pete . :)
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kartjockey

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Re: 1960 Sportsman
« Reply #40 on: November 18, 2014, 09:20:28 AM »
Should be interesting.
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Ricks

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Re: 1960 Sportsman
« Reply #41 on: November 18, 2014, 09:30:36 AM »
Quote from: pd on November 18, 2014, 09:04:58 AM
I can only imagine the cost of those billet cranks ... But , you'd never have to worry about them coming out of balance . I suppose there shouldn't be much concern about his brazed cranks ever loosing balance either ( as long as the brazing holds , anyway ) .

Not to jack your thread , Rick , but the subject of crank weight to ease vibration and improve efficiency popped into mind . I know some have toyed with that , but I don't recall what the final result was , if any . Or is that something that is still 'in the lab' ?

Pete . :)

Simplex kept adding weight to their cranks up until the end of production, so I would say it worked.  Norm Burton was of the opinion that more counterweight would be good, and Gary Wollard and him did this on several cranks. What the end result of their work was, I don't know.  For those that don't know, Norm wrote the engine section of Gary's book.
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Rick

pd

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Re: 1960 Sportsman
« Reply #42 on: November 18, 2014, 11:18:37 AM »
Good to know . It would be nice to have documentation of their work .

I'm guessing that the cranks that Wayne rebuilds have no added weight other than what brazing might add .

I have to wonder just how much weight the factory added over the years . Does anyone happen to have that information ?

Pete . :)
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Ricks

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Re: 1960 Sportsman
« Reply #43 on: November 29, 2014, 01:50:24 PM »
Finally got the crank.  The first couple of pictures are a reminder of what it looked like, and the next are after Wayne made a new shaft and attached it to the old counterweight.

I will clean the port up with a sanding roll before assembly to clean up a few rough edges.
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Rick

kartjockey

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Re: 1960 Sportsman
« Reply #44 on: November 29, 2014, 02:52:58 PM »
glad you got it back Rick. 
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