87 K75 Complete Rebuild

[Vespa no more]

The standard of your work seems to be of a high quality. I suppose for many on this forum, it's reassuring to see that the bike is in the hands of someone competent and that the finished product will be impressive. Keep the pics coming.

Have you got an idea of costs so far?

Now about that air conditioner in the garage...

Regards

Guy

[frankenwing]

The standard of your work seems to be of a high quality. I suppose for many on this forum, it's reassuring to see that the bike is in the hands of someone competent and that the finished product will be impressive. Keep the pics coming.

Thank you sir. I appreciate that.

Have you got an idea of costs so far?

Bought the bike for $650. Running but in pretty rough shape. Most of the costs so far have just been in maintenance/replacements. I'm very much a DIY kinda guy, and whatever I haven't done yet I try to learn how to do it myself. So as far as the cosmetics are concerned, the only thing I've outsourced was powder coating. I got the wheels and frame done together for $240 (remarkably cheap). I'm maybe under $600 total so far (including powder coat). All the littles things add up: filters/gaskets/o-rings.

Fortunately I have a fairly decent stock pile of random parts and accessories that worked really well for it. I had an extra set of R90 bars to replace the bent up and rusty ones that were on the bike. 👍🏼

Now about that air conditioner in the garage...

I love it 😁

[Vespa no more]

Yes the rubbers are a perishable - as stated numerous times elsewhere on this forum.

Sometimes you might be lucky and recommission old rubbers with little problems. Other times, best policy might be to replace all the usual suspects (esp those relating to the fuel system - it is fuel injected and this operates under pressure). I guess most of us walk the line in between - replace the obvious, rebuild the bike and then find out what else is causing problems (eg. crankcase breather hose ... cheap .... throttle body to engine head inlet rubbers ... expensive).

Laitch has voiced his doubts about idle bikes (ie off the road for some time) ahead of used old bikes. I guess the rubbers benefit from being used and maintain pliability.

Any idea on what changes in rubbers - do they dry out? or is there some chemical change?

Question for all:what is the best rubber salve we have found that will maintain rubbers ... will paste a copy of this question as fresh topic.

Guy

[frankenwing]

best policy might be to replace all the usual suspects (esp those relating to the fuel system - it is fuel injected and this operates under pressure). I guess most of us walk the line in between - replace the obvious, rebuild the bike and then find out what else is causing problems (eg. crankcase breather hose ... cheap .... throttle body to engine head inlet rubbers ... expensive).

Just yesterday I had new brake lines made. Partially because the R90 bars I put on somehow set the master cylinder too far away from the steering stem. And today i just bought 3 meters of fuel line to replace all of them. I agree, its better to just replace it all if it's been sitting awhile. Eliminate any vacuum leaks right off the bat.

[frankenwing]

Just about finished modeling the dash kit for Fuel/Temp Gauges, ignition switch, and hazard/fan/aux power/ switches. I absolutely love having a 3D printer 😁

[TrueAce]

Impressive! :riding:

[Vespa no more]

How big is this 3D printer?
Perhaps we can have a #D printer model recommendation.
The school I work at has several and all they seem to make is shitty little key tags ... and replacement backs for TV remotes
Now you've moved the printer into a whole new arena

Well done

Is the plastic a special UV safe type?

Regards

Guy

[frankenwing]

How big is this 3D printer?

I have a print area of 6x6x6" (15.24cm).

Now you've moved the printer into a whole new arena

yeah I've used the printer to make a few bits and pieces on this and another bike of mine already. It is a major money saver when you can make your own plastic parts! And fortunately I've been doing 3D modeling for about a decade. I even replicated a quad-lock mount for one of the bikes to work with my quad-lock case on my iphone. Very handy 👍🏼

Is the plastic a special UV safe type?

Probably not. I believe its just a standard PLA filament. But I always spray a number of coats of sand-able primer, smooth it down, then paint it.

Just printed it last night, only thing left to print is the bottoms of the fuel/temp gauges' casing.





Also managed to get all the wiring and electronics settled in on saturday. Biggest thing left to do is repair the dents in the gas tank and repaint it.

[Quiltzig]

Are you going to paint the crank cover too?

Why remove the black coating from the fuel rail--black radiates heat better than anything and you want your fuel cool...?

That was the worst greasy motor top that i've ever seen--how could it get that bad.

They get that way on top of the motor if the breather hose is split or cracked. Very common on these older motors as they are around 20 years old now.

[Scud]

That is great work. I'm getting re-energized to get back into my project. Getting ready to powdercoat my wheels and intend to do the frame. I like the idea of using the same color on wheels and frame.

Yours will be so cool with white body on the black and gold mechanicals.

[herseyb]

Well color me green over the 3d printer!  My dad has a laser cutter - maybe I can convince him to get a 3d printer too...

[frankenwing]

Well color me green over the 3d printer!  My dad has a laser cutter - maybe I can convince him to get a 3d printer too...

It's worth the $. It helps being able to model 3D objects well too though. 3D printer software usually runs pretty terrible, so you'll want to make sure you can build a solid model.

I was able to test the fitment last night and the gauges, ignition, and switches fit really well. It was a bit too tight though, and one area didn't print correctly. So I'm going to fix it and modify the openings slightly and reprint again tonight.

[frankenwing]

A white tank and finished 3D printed dash. Have yet to smooth out and paint the print. But I'm not crazy about how it looks, or where itll sit. I may have some rethinking to do on it.

[jaxon]

"Gauge Sweetness"

They look really nice.

[Elipten]

That is so cool.

[Laitch]

That is so cool.

+1 on the gauge coolness factor.

[frankenwing]

Reshaped the cowl.

[frankenwing]

[herseyb]

Hm... I like this, but I feel like the bright white takes away some of the visibility of the gold frame. 

If that isn't the intent... perhaps some gold pinstripes would make it pop?

Beautiful job overall, no criticism intended.

[frankenwing]

For me its the seat thats ruining it. Which is fine, that's just what came with the bike and I'm having a custom one made for it. But I went over some color options and I really couldn't find anything i liked more than white against the gold. I'm really liking the color combination.

[Filmcamera]

I agree about the seat, it looks a swollen and way too big for the bike. I look forward to seeing the custom one you are getting.  Nice work so far it is looking great  :clap:

[herseyb]

I'm really liking the color combination.

Excellent choice then!

[TrueAce]

Like what you've you done; tank holes needs to meet Mr. Dremel

[frankenwing]

Like what you've you done; tank holes needs to meet Mr. Drexel.

Thanks. Actually putting the radiator shrouds on. Ordered a set off a guy from here.

[frankenwing]

Managed to fire it up and ride it tonight!




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