The Presto Resto

[XLR8]

Awesome! This is going to be an amazing looking RC when it's finished.
...and perhaps a very rare one as well.

[Dadio]

This is ringing bells in my memory , I can picture adverts for the presto or maybe I even saw one boxed up on sale , its looking like a great project .

[coxbros1]

Very rare..... Damn near a Holy Grail!....or is that Tamiya 959 Porshe, lol

[keithrc]

This is ringing bells in my memory , I can picture adverts for the presto or maybe I even saw one boxed up on sale , its looking like a great project .

There's a NIB Presto listed on ebay at the moment, been on there for a while now. Not cheap at all.


Keith

[keithrc]

Minor but significant update. Anyone who knows these old chain drive Kyosho buggies will know how hard parts can be to find, in particular the front bumpers. I've been trying to find one for a long time with no luck so I started thinking about making one. I happened to have piece of 1.5mm alloy sheet handy so I made up a cardboard template and pretty much just guessed at the measurements going by some pics. I traced it out onto the alloy plate, cut it out and bent it up at work then gave it a coat of primer and satin black.

I'm not 100% happy with it but It'll work for now. I'm thinking about trying some 2mm Kydex and see how that works.



Keith

[jwscab]

the mint baja I had used a kydex bumper, so making one from 2-3mm kydex would be correct. the alloy one looks pretty much on point too.

[coxbros1]

Looks good!

[Coelacanth]

Nice job on the bumper. Bumpers for some old Kyosho cars were almost impossible to find, especially the Optima, back in the day. You could never find one that wasn't beat up to hell, or priced affordably, so as they say: "Necessity is the mother of invention", and I made my own, too. I think I used 5mm Kydex though. I'm pretty sure it's thicker than 3mm. I made it extra beefy because the Barney Optima is a real beast.

[XLR8]

Wow, we've got some straight-up bumper Michelangelo's in the house. Nice work guys!!

[Lowgear]

Here are the measurements of the Rowdy Baja bumper I have if it helps any.

266.7mm wide along the front edge.

166.7mm wide along the back edge.

30mm deep in the center before the kickup.

19mm deep on the sides before the kickup.

19mm wide kickup portion.

88.9mm inches center to center mounting holes.

3mm thick.

Some of those measurements may be off +/- 1mm as it's kind of hard to measure.

Not my buggy but the bumper looks like this one:

Rowdy Baja bumper.jpg (36.12 KiB) Viewed 2594 times

Rowdy Baja bumper.jpg (36.12 KiB) Viewed 2594 times

[keithrc]

Thanks for those measurements Lowgear, they could come in handy. I wonder if the kickup angle is the same. That bumper does look a bit different to the Vanning/Presto bumper though. I think mine might be a tad short at the ends, from what I can see in the pics the bumper ends pretty much line up with the outer sidewall of the front tyres.


Keith

[Lowgear]

Yeah, it's probably different but I figured it may help to get some idea. It is pretty large overall. I did a Google image search for protractors, and held it up to the screen, and it seems to me like it has a 50 degree kickup angle.

[matt1ptkn]

88.9mm inches center to center mounting holes.

That's how Mars rovers are crash landed!

[Lowgear]

That was one of two measurements I online converted from Imperial (3-1/2") to Metric. The other was the total width of the bumper as my calipers don't open that wide.