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Learning how to build Lotus Seven replicas...together!
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PostPosted: March 20, 2018, 6:43 am 
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Joined: June 5, 2016, 7:03 am
Posts: 188
Location: ontario
Thanks for you input so far and keep it coming............[/quote]

In the 1980s I used to own a yamaha XS 1100. This was an air cooled 4 cyl bike with a drive shaft. I think that the power was about 90 hp but I may be wrong. It was a lively bike. Your problem would of course be to set up an effective cooling system. The down side of shaft driven bikes as I recall was the elevator syndrome (the rear suspension would go up and down with throttle changes).


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PostPosted: March 20, 2018, 11:14 pm 
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Joined: March 30, 2011, 7:18 am
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Location: central Arkansas
phil wrote:
The down side of shaft driven bikes as I recall was the elevator syndrome (the rear suspension would go up and down with throttle changes).


I read about that in the magazines, but my XJ650 Turbo didn't exhibit that behavior, even with the boost cranked up to 20psi.

One of the reviews of the XJ had an impressive description of how bad the "shaft jacking" was, apparently written by a journalist who hadn't actually ridden one...


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PostPosted: April 30, 2018, 10:47 pm 
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cool project 8) ... going to follow this with high interest :wink:

imho it screams for a late FJR 1300 engine shaft-feeding direct into a flipped Speedway Engineering baby IRS QC (FJR output rotates the opposite way then reg car engine)
the flipped QC would fix that problem , plus lower the cv flanges and allow you to fine tune final gear ratio in minutes ...
I would look into aluminum "Legends" spindles up front
maybe Jag/LS aluminum spindles in the back
I have looked into using the (sexy double shear mount) LS spindles myself , but abandoned the idea for now
super lightweight ... and wheel bearing id is the same as BMW hubs (930CV flanges ;) )
together with the 930 cv flanges of the QC your open for any axle lenght you desire (its basic dune buggy stuff)
need to take a pic of my mockup ....
btw
aluminum Mazdaspeed 3 brake calipers (with integral parking brake!) are a direct bolt on to the LS spindle bosses
(using the iirc 295mm x 9 mm mazdaspeed 3 disc)


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PostPosted: May 1, 2018, 6:27 pm 
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Joined: December 17, 2010, 1:24 pm
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Location: Gainesville, Mo.
[quote="Stephan"]cool project 8) imho it screams for a late FJR 1300 engine shaft-feeding direct into a flipped Speedway Engineering baby IRS QC (FJR output rotates the opposite way then reg car engine)
the flipped QC would fix that problem , plus lower the cv flanges and allow you to fine tune final gear ratio in minutes ...
[quote]

Now this could bring us back to the Goldwing powerplant, minus the driveshaft!

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PostPosted: May 1, 2018, 6:44 pm 
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Joined: November 11, 2013, 4:47 am
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Location: No. Nevada
Stephan wrote:
imho it screams for a late FJR 1300 engine shaft-feeding direct into a flipped Speedway Engineering baby IRS QC


Ah yah, and only $3,118.00 as of today. :BH:
Not so Locost as other solutions.

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PostPosted: May 1, 2018, 7:05 pm 
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Joined: April 4, 2018, 1:32 pm
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RichardSIA wrote:
Stephan wrote:
imho it screams for a late FJR 1300 engine shaft-feeding direct into a flipped Speedway Engineering baby IRS QC


Ah yah, and only $3,118.00 as of today. :BH:
Not so Locost as other solutions.


your right :ack: .... that is one of my problems (besides drinking a little too much :cheers: lol) ;
not every solution that would be really cool is actually affordable :BH:


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PostPosted: May 1, 2018, 7:25 pm 
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Location: No. Nevada
Somewhere on here is another threads about light weight diff's.
I have CNC machines so I've contemplated making a custom carrier if I could find the right diff to put in it.

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PostPosted: May 1, 2018, 7:34 pm 
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Joined: April 4, 2018, 1:32 pm
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FYI
made some pics of my (abandoned & dusty :roll: ) Jag S/ Lincoln LS rear knuckle mockup

Image

Image

Image

nice piece (love the double shear mounts) but at 6.75" from center to outside tie-rod arms its probably a no-go for rims under 15" :?
small and light Mazdaspeed 3 aluminum brake calipers with integral p-brake are a direct bolt on ...

my plan was to use a BMW medium case diff carrier with 930 flanges, 930 cv axles and redrilled (to 5x4.5") BMW axle flanges,
(that according to my online research seem to be the same od as the LS wheel bearing id)
would probably need a little spacer to position the Mazda 3 brake disc correctly
btw Heim rod end is a beefy 7/8 body with 3/4 ball that I was planning on due to the load of the coilovers on the LCA


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PostPosted: May 16, 2018, 9:42 am 
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Joined: April 15, 2011, 10:39 pm
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Location: Dallas, PA
I’ve been in FL since I picked-up this body and truthfully forgot that it’s even back home in the shop until last night. I had a friend and P-car enthusiast e-mail me asking how much I wanted for it. Apparently a friend of his, also a Porsche guy, has an interest in hanging it on his garage wall.

I’m trying to figure out what it is worth vs keeping it for a future project.

Decisions, decisions..........

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