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Ironhead Sportster Motorcycle Talk (1957-1985) For all those that wanna talk about Ironhead Sportster Motorcycles

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  #31  
Old 3 Days Ago
thefrenchowl's Avatar
thefrenchowl thefrenchowl is offline
Senior Custom Bike Builder
 
Join Date: Nov 2006
Posts: 2,821
Sportster/Buell Model: KHK
Sportster/Buell Year: 1954
Sportster/Buell Model #2: IronHead XLH
Sportster/Buell Year #2: 1978
Other Motorcycle Model: XLRTT
Other Motorcycle Year: 1966
Reputation: 187476
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Quote:
Iron Mike: For example the gen/alt statement. Clean stable voltage is a must.
Whatever you generating it with, if you have a decent battery, it will be clean and stable voltage!

I started 25 years ago a 67 CH Dr Dytch stroker twin rear head, went quite down the road, but other projects were in the way, Half way through it became a full reverse set up for the hell of it...In the end, I passed the whole engine to a friend so it was never finished.



It was also twin sparks and I even drawn a special distributor to fit on top of a std Fairbanks Morse to send the sparks to the right head...

Jerry Branch did build a twin front head XLR engine in the sixties for a drag racer with HUGE racing Dell Ortos but did relocate the rear exhaust port to the left, lot of work... T'was called Carte Blanche which roughly tranlate as Licence to Kill...



My friend Jim Haubert made a reverse rear head in 1970 with twin Tillies (rear on front turned 180 deg, front on rear as is):



I do find Jim's set up more pleasing to the eyes than a twin front head, but opinions will vary on that matter!!!

And goes to show how adaptable this old engine is!!!!!!!!!!

Patrick
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  #32  
Old 3 Days Ago
Iron Mike Iron Mike is offline
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Sportster/Buell Model: xlch
Sportster/Buell Year: 1964
Sportster/Buell Model #2: XLCH IR EFI
Sportster/Buell Year #2: 1971
Other Motorcycle Model: BMW K1200RS
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Yep. I'm not doing anything super groundbreaking. All been done before.
To me its just a swap meet special that Im slapping together.
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  #33  
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brucstoudt brucstoudt is offline
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Sportster/Buell Model: xlch
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thanks for sharing the pics Patrick.so many of these old pics you have previously posted have gone away. the one with the 900 motor on the old dyno was one of my favorites.
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  #34  
Old 3 Days Ago
thefrenchowl's Avatar
thefrenchowl thefrenchowl is offline
Senior Custom Bike Builder
 
Join Date: Nov 2006
Posts: 2,821
Sportster/Buell Model: KHK
Sportster/Buell Year: 1954
Sportster/Buell Model #2: IronHead XLH
Sportster/Buell Year #2: 1978
Other Motorcycle Model: XLRTT
Other Motorcycle Year: 1966
Reputation: 187476
thefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant future
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This one?



If yes, he's Roy Bokelman (orthograph?) from the race dept, late 50's/early 60s, testing an XLR engine. This dyno room was next to the race dept and the engineering dept at Juneau's.

Indeed, it was a sin to make such din in this tin...

Patrick
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  #35  
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yes Patrick that's the one!now I have it in a thread I can find again thanks.i remember barefoot saying ''H-D race dept.was 3 guys in a closet'' certainly looks like XLR motor.spark plug wires are coming from the front of the timing cover.they won't let me give you more rep points yet.
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  #36  
Old 1 Day Ago
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thefrenchowl thefrenchowl is offline
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Join Date: Nov 2006
Posts: 2,821
Sportster/Buell Model: KHK
Sportster/Buell Year: 1954
Sportster/Buell Model #2: IronHead XLH
Sportster/Buell Year #2: 1978
Other Motorcycle Model: XLRTT
Other Motorcycle Year: 1966
Reputation: 187476
thefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant futurethefrenchowl has a brilliant future
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Right click on it and save it into your PC or laptop!!!!!!!!!!!!!!!!!!

Yes, race dept was close knit with about 5 guys...

I'm not after rep points, just glad to help where I can...

Patrick
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The dual carb Iron bikes were an attempt to stay competitive. I remember Cal won a few road races on one but that had a lot to do with Cal being a great road racer. Mark and Mert became a good one and Castro/Romero were good ones. When the Iron XR went to the big tracks, the heat got them. Even the regular XR 750s were not all that reliable. I remember talking with Mert maybe in 95-6? He said they finally had the XRs living at high rpms.
I saw a dual carb set up once it had a DC on one side and a Servicar DC on the other, looked great and the DC is a great carburetor (a small GAL). Also saw a pan with dual bombsights which look fabulous too. I liked bombsights too.
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