Flyrite Choppers 7 Deadly Sins - Rebuild - The Jockey Journal Board

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Old 06-19-2020, 09:42 AM   #1
FOSC
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Default Flyrite Choppers 7 Deadly Sins - Rebuild

I’ve been rebuilding this 7DS - prototype/title bike. This is the first bike that was built that all the others ones were made from. I was able to acquire all the original one off parts thanks to Jason. Dennis McPhail redid the art work to reflect the Series. I have been collecting parts, fabricating and assembling the prototype parts for almost 10 years. I could not afford 9k for S&S Shovelhead so I built this motor instead. Finishing up the final stuff and hope to kick it over soon!
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Old 06-19-2020, 11:32 AM   #2
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Nice
Did You Record your process to make the motor ?
I’m interested in how you did it
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Old 06-19-2020, 12:15 PM   #3
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I’ve got pictures. Check our Shortsters website they’ve got nice Divorced Ironhead Mounts. I had the fabricate my own Belt Drive Set up and engine pulley insert, using the original sprocket. I’ve got stroked flywheels, Forged High Compression pistons and Andrews Cams. Carb is an Italian Only Weber 32 DCOF (F not E) that came on rear engine 1100cc Fiats. I dig the motor, but it deserves the generator Shovel. Hopefully I’ll build and replace it later! Message me and I’ll send you details and pics if you’d like.
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Old 06-19-2020, 12:25 PM   #4
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Default Re: Flyrite Choppers 7 Deadly Sins - Rebuild

post the pic's up here if you can, we all would like to see how you did it....
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Old 06-19-2020, 01:10 PM   #5
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The engine was a blow motor that threw a rod. I purchased for 350.00. I purchased the engine mounts from shortsters and hacked off the trans. My goal was to make this look as much like a generator shovel as I could. I cut the left side of the case and smoothed It out leaving only the top part to utilize as a belt guard. A friend of mine was closing his machine shop and did the flywheel rebuild and rebuilt the heads. Fleabay provided flywheels and Wiseco pistón and aftermarket cylinders. I flattened out the cam cover making sure the oil passages remained Intacct and added ribs (I’m going to redo them)
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Old 06-19-2020, 01:31 PM   #6
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Shortsers does have instructions on cutting the case early is different than late models. A lot of cutting has to be done for fitment depending on the frame that is being used. Choppers usually have more room than factory frames. Building the motor is the same after that. The belt drive is tricky since no one mass produces a belt drive for this beast (shortsters sells one but has a hard time getting the Sportster motor insert) I used a BDL belt drive and modified my stock engine sprocket as the pulley insert. It worked out great and is straight and true. The sprocket is hardened so you have to heat it up before it will cut on a lathe or can be drilled.
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Old 06-19-2020, 01:32 PM   #7
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Default Re: Flyrite Choppers 7 Deadly Sins - Rebuild

Nice looking project what you running for a tranny? and what did you build the engine to meaning cubes.
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Old 06-19-2020, 01:39 PM   #8
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Here’s Longblock finished up.
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Old 06-19-2020, 03:34 PM   #9
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Motor is 74 cubic inches and the tranny is an S&S 5 Into 4 with all Andrews Gears and early style kicker only.
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Old 06-20-2020, 12:55 AM   #10
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Default Re: Flyrite Choppers 7 Deadly Sins - Rebuild

That seems a much nicer than usual front end. Is it a one-off, or storebought?

Pretty swell bike in every respect, far as I can see. Thanks for showing us.
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Old 06-21-2020, 01:46 AM   #11
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Wow a lot of clean work. I plan on doing a divorced case ironhead soon too so everything you post on this is much needed.
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Old 06-21-2020, 02:11 AM   #12
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Default Re: Flyrite Choppers 7 Deadly Sins - Rebuild

Yes Thanks good work.
I see the straight edge on the pic there, the gearbox dictates engine position side to side
did you have trouble with getting the right belt length (you can't go to much fore and aft?)
the straight edge is on gearbox case?
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Old 06-21-2020, 06:49 AM   #13
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Default Re: Flyrite Choppers 7 Deadly Sins - Rebuild

nicely done fella.
I made a complete 2'' belt drive for my 45 magnum using pully blanks & the hardest part was also the front sprocket machining,
man are they hard, like yours it needed a lot of heat treating with an oxy/acetaline torch to get it soft enough to turn the teeth off to fit into the pully,
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Old 07-01-2020, 03:22 PM   #14
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Default Re: Flyrite Choppers 7 Deadly Sins - Rebuild

Very nice! I think it is the cleanest I've seen.
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