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Single Seater Honda Fireblade Powered RWD Tarmac Buggy Build

Some of you may remember my last project, the Subaru Powered Peugeot 205 that sold a while back now.

https://cimg5.ibsrv.net/gimg/www.sco...3f4fdb22e6.png

So something different this time, It's a scratch build, and motorbike powered! Although still harnessing a Subaru drivetrain, or at least in some fashion.

This is something I've wanted to build for a long time, so here goes!

First off, the Build Bench!

https://cimg3.ibsrv.net/gimg/www.sco...8623464086.png

I need something strong, and big enough to build the buggy frame on, and this is it, all marked out with 100mm squares to keep everything square and true.

This is a viscous lsd from a bug eye wrx, I've stripped it down, removed the tapered roller bearings and fitted sealed sleeve bearings so I can run the diff out of the casing.

https://cimg6.ibsrv.net/gimg/www.sco...11011f6dc5.jpg

Should be a fairly easy build, be like a rage buggy when done?

Quote:

Originally Posted by boosted (Post 11905052)

Should be a fairly easy build, be like a rage buggy when done?

Similar mate yes, and for tarmac.

I've removed the crown-wheel, and had a sprocket cut to suite the flange and the bolt pcd on the diff.

https://cimg2.ibsrv.net/gimg/www.sco...3d0c01ca1c.jpg

This is a housing I've made to keep the diff sealed, I've fitted grease nipples so I can pump it full of grease to keep the internal gears lubricated.

https://cimg5.ibsrv.net/gimg/www.sco...dee73e307e.jpg

https://cimg1.ibsrv.net/gimg/www.sco...0d9a328062.jpg

https://cimg0.ibsrv.net/gimg/www.sco...b123c0dcd3.jpg

https://cimg3.ibsrv.net/gimg/www.sco...8691b864bb.jpg

The new sleeve bearings are fitted into the stock alloy bearing housings, and bolted onto the mounting plates, I can now build the rear frame around this.

After hours of modeling the rear frame, it’s time to start building.
I have designed the suspension geometry on the Racing Aspirations suspension calculator, it lets you input all the dimensions and run it through its travel and roll etc.
I'm using the Subaru rear hubs and Driveshafts.

https://cimg9.ibsrv.net/gimg/www.sco...6e9ed074e1.jpg

The main hoop was bent with my new tube bender, and what a beast it is, so easy to use.

https://cimg1.ibsrv.net/gimg/www.sco...27fcd4fac9.jpg

https://cimg3.ibsrv.net/gimg/www.sco...2326b0a07e.jpg

https://cimg6.ibsrv.net/gimg/www.sco...7d3b141295.jpg

https://cimg8.ibsrv.net/gimg/www.sco...ebc9c2d5a3.jpg

https://cimg1.ibsrv.net/gimg/www.sco...dbf88a7682.jpg

The rear frame is coming along nicely now, I’ve fabricated the rear wishbones, and knocked up a jig incase I need to make new ones.

Modeling the front end, to get all my pick up points spot on, note the threaded rod with the nut welded on the end, that's where my steering rack pivot point will be, it needs to be in right position to avoid bump steer.

https://cimg3.ibsrv.net/gimg/www.sco...03ccb5c93c.jpg

https://cimg9.ibsrv.net/gimg/www.sco...7818a06262.jpg

https://cimg0.ibsrv.net/gimg/www.sco...25d37800dc.jpg

Front lower wishbones fabricated, and I’ve started on the front frame, I’ve also fabricated my own pedal box to fit inside.

https://cimg1.ibsrv.net/gimg/www.sco...2301dbff00.jpg

https://cimg2.ibsrv.net/gimg/www.sco...0666d25c15.jpg

https://cimg9.ibsrv.net/gimg/www.sco...063f9b1c27.jpg

Threads like this are what makes forums interesting. Great write up. Looking forward to the end result.:thumb:

Quote:

Originally Posted by johnlogie (Post 11905126)

Threads like this are what makes forums interesting. Great write up. Looking forward to the end result.:thumb:

Thanks mate :thumb:

Woo hoo! He's back with another great build. Most certainly subscribed!

Looking great so far.

Loved your last project, can't wait to see how this one develops! :luxhello:

Haha cheers guys!!

Shouldn't take long to finish after crimbo! :thumb:

Looking forward to this project James!!!!

Looking forward to the first test at Curborough!!!:thumb:

Quote:

Originally Posted by johnlogie (Post 11905126)

Threads like this are what makes forums interesting. Great write up. Looking forward to the end result.:thumb:

+1 will be following this thread closely, nice and neat alloy mig welding on the seat.:notworthy

Subscribed. Really interested to see how this progresses. Good luck to you!

I’m back!! 3 years later😂

I’ve moved house twice since my last post, so the project was put on the back burner.

I’m finally settled again, so here goes for a massive update.

This project ended up being a lot bigger than I first thought, designing a frame that not only looked good, and was safe, but I could fit myself in comfortably, and package an engine, diff, fuel tank and all of the other components.

It’s certainly been a test.

I spent months researching and modelling my suspension geometry, and I quickly noticed that tweaking one thing, effected another thing, so I realised that there’s no such thing as the perfect geometry, and a compromise was needed. All that said and done, I think I’ve finally found a happy medium, and with lots of adjustability on the wishbones, and double adjustable shocks, I’m super confident it’s going to handle well.

https://cimg8.ibsrv.net/gimg/www.sco...67f573a56.jpeg
https://cimg3.ibsrv.net/gimg/www.sco...86676aca5.jpeg
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