MiniGP Build

[InfiniteReality]

In hindsight, it was an experiment. Kicking around engine upgrade so would have to redo. It's easier to find 9deg pie cuts and can just buy in bulk. End goal is to learn all of this. I have in 2 sections so can remove, will bring it and the pie cuts to get welded. It's not in my bag of skills.

Copied the design and drew my own 9deg cuts. Quick print at 20min each.

Back on the engine, going to the dealership to measure a CBR or CB300 engine. Has potential to be made to fit and if so there's a ton of benefits outside of HP gains.

Battery box I designed to hold the lithium battery, current CDI and MotoGadget mo.unit blue high and tight. Will make for easy access for wiring everything right there in the open.

 

[InfiniteReality]

Random pics. Old exhaust tip installed, but decided on a better muffler looking muffler solution.

After the fact of buying the bike I realized track bikes don't have kickstands like street bikes, lol. Since I have a Brock's kickstand for the Gen3 that I didn't use because is too short for my liking, so I chopped down an old busa mount to weld to the frame. When it's on the ground I'll figure out that. Due to being a light bike, may design a mount to use the kickstand in 3d and do in forged carbon.

 

[InfiniteReality]

Not real, yet. More mock up than anything. Neither is the rear master. Always wanted to order some from China too, lol... $55 shipped isn't bad! Can't use the 19s unless I can find some shorter levers. May have to look at 13/14. Would be a better brake feel as well.

 

[Berteric.]

Now we‘re talking, nice parts.
It also looks like you're pretty damn good with 3d drawing

 

[InfiniteReality]

Now we‘re talking, nice parts.
It also looks like you're pretty damn good with 3d drawing

Thanks! Getting better and better, best part is I'm actually following through for the main reason for this project.

Not sure if mentioned, but I also have ordered some forks and a set of gold anodized MFZ wheels as well as some DOT tires. Coming from the UK so just waiting, been a month so far.

 

[nintastio]

Will be following this for sure, that 3d printed exhaust tubing is a great idea. Never would have thought to do that myself.

 

[InfiniteReality]

So far I've swapped out almost every nut, washer or bolt with titanium, most grade 5. Forged aluminum wheels on the way, aluminum swing arm and subframe. Got carried away with this whole lightness aspect due to the bike already being small plus a track bike so minimal already...but it's a direction with a motorcycle I've never taken.

Since the whole point to the bike is to progress with this 3D, why stop learning there... Engine swap, even though it'll be opening a can of worms because why not do FI, water cooled, etc. I can fit a CBR/CB300 engine, going to measure one at a dealership. If so it'll net me all the above plus 3x HP on a bike that is on paper around 75lbs lighter than the CBR.

And while weight is a concern, I'll never be able to weld aluminum good enough to look good and trust any time soon, but really want to make a jig and duplicate my steel frame into an aluminum trellis frame.

Won't use this fairing stay I modeled, but won't buy the aluminum version. Ordered some carbon tubing to use and will make forged carbon connectors. While I was measuring, did the same for the clip-on bars, of course thicker version.

Battery box is more or less done, nice and compact, wiring should be pretty neat and clean this way.

Never ending supply of titanium hardware it seems.

Modeled a spool quickly and printed. I'll redesign to my liking and make a forged carbon version. Same with bar ends.

 

[Berteric.]

Looks like you turned in the right way… again, you are making great progress. Also nice design graphics on that tail section!

 

[InfiniteReality]

Looks like you turned in the right way… again, you are making great progress. Also nice design graphics on that tail section!

Oopps, left that part out, haha! My daughter has discovered an old dry erase board I put up that was hidden by some rolling shelves... Dawned on me there's no reason she couldn't use the bike as a drawing board................................and I can work on it while she does it, win-win!

 

[sixpack577]

How cheap can I buy that box of old parts from you?
I'de put them all back together and have the brand new bike you started with
lol

 

[InfiniteReality]

How cheap can I buy that box of old parts from you?
I'de put them all back together and have the brand new bike you started with
lol

It'll be less than I paid when the time comes, engine will never have been ran too! Or the start of a new project, mini cafe racer?

 

[InfiniteReality]

Few 3D parts I've been working on for this bike.

Fairing Stay - Will be using premade 2x2 twill carbon fiber tubing and will make a mold for the fittings and will be made of real forged carbon.

Fork Vise Holder - Made this for someone else, but redesigned for the FastAce 615mm forks and added texture for extra grip. Outside gray is printed in PLA, the inside blue (with white nubs) is printed in TPU so no damage to fork tube and no spinning when tightening the cap.

Battery box - Been a WIP for a while now, making many changes along the way. Perfect fit behind the gauges, secured to gauge mount. Also holds the MotoGadget Mo.Unit on top which will control all electronics on the bike and having it on top of the battery will make for easy wiring and access to terminals (fairing comes off in under 5min).

Chain Adjusters - Not sure how this will end up, but didn't like generic looking ones. So per the norm with this bike, making my own. Mold, forged carbon part. I left a 10x10mm hole in the area where the adjuster hits the part. I'll epoxy a piece of Ti in that part to dispurse any load. Good idea? Who knows, open to comments for this or anything.

Swingarm Spools - Of course we can buy M8 spools for a few bucks, (no full carbon ones) but for this bike I do not want them for swingarm protection, just to get rear in the air so I made shorter than normal. Any spool I could purchase would have sat on the arm weld which while affects nothing really, just annoys me. So with those ideas, designed my own that fit flush against the arm, protection from the stand fingers and smaller. Same with this, TPU mold and forged carbon end part.

Bar ends - Same concept as the spools, just wanted the practice and want them to look proportional to the actual bike, so lots of them may have looked awkward. No full carbon ones, so made replacement pucks for the Woodcraft bar ends I have. Again, looks and not protection.

Rear brake bracket. Just duplicated the stock bracket for now but want to use a better caliper. 4 piston rear caliper is overkill, but I have a spare one in hand with a larger rotor that may work out. If not or looks goofy in mock up, I'll go back to a 2 piston with a 180mm rotor. Need a block of time to myself so I can sit down and figure it all out and get it modeled in CAD so I can print a new bracket to test fit. I've always wanted to get something CNC out of aluminum and this may be the part to do it.

 

[InfiniteReality]

Wheels came in, 12x2.5 and 12x3.0. Full-Rev rearsets. Example of test fit of spool and chain adjuster.

 

[InfiniteReality]

Test fit of fairing stay fittings to carbon tubing. Good to go so design mold #4. Lots of parts in que for forged carbon soon, lol.

Yes that's Grimace in the background. Can't beat free McDonald's toys. Signed up for something a year ago for one and actually, eventually, showed up. 7ft tall.

 

[Berteric.]

Few 3D parts I've been working on for this bike.

Fairing Stay - Will be using premade 2x2 twill carbon fiber tubing and will make a mold for the fittings and will be made of real forged carbon.

Fork Vise Holder - Made this for someone else, but redesigned for the FastAce 615mm forks and added texture for extra grip. Outside gray is printed in PLA, the inside blue (with white nubs) is printed in TPU so no damage to fork tube and no spinning when tightening the cap.

Battery box - Been a WIP for a while now, making many changes along the way. Perfect fit behind the gauges, secured to gauge mount. Also holds the MotoGadget Mo.Unit on top which will control all electronics on the bike and having it on top of the battery will make for easy wiring and access to terminals (fairing comes off in under 5min).

Chain Adjusters - Not sure how this will end up, but didn't like generic looking ones. So per the norm with this bike, making my own. Mold, forged carbon part. I left a 10x10mm hole in the area where the adjuster hits the part. I'll epoxy a piece of Ti in that part to dispurse any load. Good idea? Who knows, open to comments for this or anything.

Swingarm Spools - Of course we can buy M8 spools for a few bucks, (no full carbon ones) but for this bike I do not want them for swingarm protection, just to get rear in the air so I made shorter than normal. Any spool I could purchase would have sat on the arm weld which while affects nothing really, just annoys me. So with those ideas, designed my own that fit flush against the arm, protection from the stand fingers and smaller. Same with this, TPU mold and forged carbon end part.

Bar ends - Same concept as the spools, just wanted the practice and want them to look proportional to the actual bike, so lots of them may have looked awkward. No full carbon ones, so made replacement pucks for the Woodcraft bar ends I have. Again, looks and not protection.

Rear brake bracket. Just duplicated the stock bracket for now but want to use a better caliper. 4 piston rear caliper is overkill, but I have a spare one in hand with a larger rotor that may work out. If not or looks goofy in mock up, I'll go back to a 2 piston with a 180mm rotor. Need a block of time to myself so I can sit down and figure it all out and get it modeled in CAD so I can print a new bracket to test fit. I've always wanted to get something CNC out of aluminum and this may be the part to do it.

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I took for twenty years evening education in different computer lessons… but the most difficult I found was the Inventor 3D module. To me it was a pain in the ass. So I admire your skills.

 

[Berteric.]

Test fit of fairing stay fittings to carbon tubing. Good to go so design mold #4. Lots of parts in que for forged carbon soon, lol.

Yes that's Grimace in the background. Can't beat free McDonald's toys. Signed up for something a year ago for one and actually, eventually, showed up. 7ft tall.

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What‘s a Grimace? Is that something to soften your butt?

 

[InfiniteReality]

I took for twenty years evening education in different computer lessons… but the most difficult I found was the Inventor 3D module. To me it was a pain in the ass. So I admire your skills.

Thanks! I've always struggled with seeing things in 3D and still do, but this bike's purpose is for motivation to push myself and so far I'm doing that with much, much learning and drawing to go. I enjoy seeing things happen from concept to reality within hours, then eventually to forged carbon many hours later, lol.

What‘s a Grimace? Is that something to soften your butt?

It's a McDonald's character,

https://i.redd.it/4wznto7hope61.jpg

 

[InfiniteReality]

Work in progress. Fairing stay is done, just need to install. Wont' finish any parts until the end as far as final sanding and clear coat on carbon parts. Bike is back together for the first time in months, but lots and lots more to go.

 

[InfiniteReality]

Finally got my rearsets in so modeled a new heel guard, made a mold and made a forged carbon version out of PLA. Getting this process down very well now for producing my own parts. Many, many more to design and make.

 

[InfiniteReality]

I want to run a little larger rotor on the rear, mainly to keep things proportional, run a better caliper and I wanted the caliper to be bottom mounted, low center of gravity. 180mm to 200/220 rotor. The one in the picture is the front rotor, hence backwards for reference. Likely will end up with a 200ish. Took a couple revisions, but pistons are centered on the rotor face. I didn't draw the caliper, found online that had similar dimensions to the one I ordered. Will mock everything up and space accordingly when caliper and smaller rotor arrives.