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Nannos Hotrod TR1 (turbo)

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Re: Nannos Hotrod TR1 (turbo)

PostAuthor: faffi » Thu May 10, 2018 3:32 pm

More popcorn
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Re: Nannos Hotrod TR1 (turbo)

PostAuthor: nanno » Sun Nov 25, 2018 3:08 pm

Nobody asked for this and yet still... here goes (and just six months later): I restarted the turbo project and want to implement quite a few of learnings I took from the last setup. Most importantly, everything should be rubber mounted or have slip joints, so it can extend and contract depending on temperature. Only thing: The space between those cylinders hasn't changed so some creative thinking was due.

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No matter how much space you start out with, add a turbo to the equation and all the bits fight for exactly the same space under the tank.

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Let's add several hours of trying and failed attempts and ultimately giving in and fabricating the missing bits from piecuts. Now I really don't like pie cuts, because pie-cuts are for hipsters. Even though in this case that's probably the only legit use-case for them as you couldn't bend the tube tight enough.

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No dressing up here, but the result is really rather compact.

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And that's the intermediate result as of this afternoon. Still quite a few bits to sort out, e.g. how to make a joint to seal the turbo nicely to the manifold and ideally give it some level of flexibility. Also the rubber manifolds have to be shimmed a bit as the manifold warped a bit during welding.

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The full blog-post: https://greasygreg.blogspot.com/2018/11 ... art-3.html
http://viragotechforum.com/viewtopic.php?f=12&t=43227 - Nanno's accumulated findings (and blatant show-off) - infos on my TR1's, my performance and reliability mods and a bit of show-casing of the stainless steel exhausts I build

http://greasygreg.blogspot.co.at (My blog - Greasygreg.blogspot.co.at)
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Bike year & model: 1981 Yamaha TR1
1982 Yamaha TR1 Turbo
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1979 RD250/R5/DS7-hodgepodge (in bits)
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Re: Nannos Hotrod TR1 (turbo)

PostAuthor: Hellgate » Sun Nov 25, 2018 5:09 pm

Nice work Greg. I'm curious to see how this lands. The TR1 motor and frame design makes it difficult at best to find a good solution. Without the ability to hyroshape tubes, you're stuck with slices of pie, cake, or pizza, your preference. Personally, I like pie...apple, or lemon meringue.

Any chance of using CAD to "what-if" the tube lay out?
Pete
'12 Tuono V4R APRC
'05 R6 Track Bike
'88 RD350 YPVS
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Re: Nannos Hotrod TR1 (turbo)

PostAuthor: nanno » Sun Nov 25, 2018 5:13 pm

I am more of a pizza guy to be honest...

Yeah, I could probably run a FEA-simulation at work, but as I do not have a better idea for the packaging... might as well simply not do it as I think from airflow-point of view this thing is... less than optimal. (One of the upsides of forced induction is that it does rely a lot less on actual flow, but with a big enough turbo or supercharger you can move air everywhere.)

What I might try out - just for sh*ts 'n' giggles - is to run a carb with a similar manifold... I think it'll be completely unjettable due to the lack of flow because of all the turns. :ops:
http://viragotechforum.com/viewtopic.php?f=12&t=43227 - Nanno's accumulated findings (and blatant show-off) - infos on my TR1's, my performance and reliability mods and a bit of show-casing of the stainless steel exhausts I build

http://greasygreg.blogspot.co.at (My blog - Greasygreg.blogspot.co.at)
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1979 RD250/R5/DS7-hodgepodge (in bits)
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Re: Nannos Hotrod TR1 (turbo)

PostAuthor: faffi » Sun Nov 25, 2018 5:28 pm

Impressive work, hope it also work equally well.
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Re: Nannos Hotrod TR1 (turbo)

PostAuthor: nanno » Mon Nov 26, 2018 1:27 am

Thx for the kind words and we'll see. It'll definitely be nice to have this bulky and expensive coat rack do something else than simply take up space in my workshop... :o:
http://viragotechforum.com/viewtopic.php?f=12&t=43227 - Nanno's accumulated findings (and blatant show-off) - infos on my TR1's, my performance and reliability mods and a bit of show-casing of the stainless steel exhausts I build

http://greasygreg.blogspot.co.at (My blog - Greasygreg.blogspot.co.at)
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1977 XS 750 Sidecar
1984 XT500 4Valve (Austrian Tax saving edition)
1979 RD250/R5/DS7-hodgepodge (in bits)
Sex: Male

Re: Nannos Hotrod TR1 (turbo)

PostAuthor: nanno » Fri Dec 07, 2018 5:15 am

Just a little teaser :cl:

Image
http://viragotechforum.com/viewtopic.php?f=12&t=43227 - Nanno's accumulated findings (and blatant show-off) - infos on my TR1's, my performance and reliability mods and a bit of show-casing of the stainless steel exhausts I build

http://greasygreg.blogspot.co.at (My blog - Greasygreg.blogspot.co.at)
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Bike year & model: 1981 Yamaha TR1
1982 Yamaha TR1 Turbo
1977 XS 750 Sidecar
1984 XT500 4Valve (Austrian Tax saving edition)
1979 RD250/R5/DS7-hodgepodge (in bits)
Sex: Male

Re: Nannos Hotrod TR1 (turbo)

PostAuthor: faffi » Fri Dec 07, 2018 8:08 am

Hope that tank is just for testing, but you will not get far on 12 litres of fuel once you start twisting the loud handle in anger :bg:
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Re: Nannos Hotrod TR1 (turbo)

PostAuthor: nanno » Fri Dec 07, 2018 9:27 am

I dread you could be right, but then again, I haven't built this one for touring. At least no distances longer than a 1/4-mile :bg:
http://viragotechforum.com/viewtopic.php?f=12&t=43227 - Nanno's accumulated findings (and blatant show-off) - infos on my TR1's, my performance and reliability mods and a bit of show-casing of the stainless steel exhausts I build

http://greasygreg.blogspot.co.at (My blog - Greasygreg.blogspot.co.at)
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nanno
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Bike year & model: 1981 Yamaha TR1
1982 Yamaha TR1 Turbo
1977 XS 750 Sidecar
1984 XT500 4Valve (Austrian Tax saving edition)
1979 RD250/R5/DS7-hodgepodge (in bits)
Sex: Male

Re: Nannos Hotrod TR1 (turbo)

PostAuthor: faffi » Fri Dec 07, 2018 9:41 am

Ach, so :thumbs:
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Re: Nannos Hotrod TR1 (turbo)

PostAuthor: nanno » Sat Dec 08, 2018 5:05 pm

Slowly, but steadily this stuff's coming together like it should... to admit I am a bit excited by now is a wild understatement. It all seemed rather theoretical up to now, but by now it's basically down to finishing the oil-suppy and then find out which parts I robbed off the bike in the last one-and-a-half years. But I am getting ahead of myself.

First step was to clock the turbo, which is a dead simple job on a new turbo, but a lot less so, when years of caked on oil and diesel-soot glued the whole lot together for good. Weeks of penetrating oil, a heat gun and some (not overly) gentle taps with a Newtonian particle accelerator (a PROPER rubber mallet) and it finally freed up. And just to give you an idea, just how small that lil' turbo is – that's a 10mm spanner below it.

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Following the tradition of this being a proper parts-bin-special, this is a wastegate actuator from some Volvo (I think) with a GT1752 as the original actuator worked from vacuum and not boost, because it was operated by the Opel's ECU and not directly. (They were waaaay ahead of their time back then...)

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bit of fitting up of all the components and that VERY satisfying moment of: it's tight, but all fits in there... somewhere.

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From a design point of view, this has got to be the single most elaborate plenum/intake manifold, I have designed to this point. It's every bit as three-dimensional as you would think, when looking at these pictures.

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And that's actually the fabrication side of things on the cold side of the turbo mostly done.

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So what's still missing at this point: I have to drill and tap the compressor housing to get a boost-source for the wastegate-actuator, sort out the oil-lines (both feed and drain), tap the engine case for the oil-supply and then sort out all the electrical gremlins that mostly stem from me "borrowing" parts for my daily and friends' projects.

I do not see a silencer as a high priority item. :;:

Blog: https://greasygreg.blogspot.com/2018/12 ... art-4.html
http://viragotechforum.com/viewtopic.php?f=12&t=43227 - Nanno's accumulated findings (and blatant show-off) - infos on my TR1's, my performance and reliability mods and a bit of show-casing of the stainless steel exhausts I build

http://greasygreg.blogspot.co.at (My blog - Greasygreg.blogspot.co.at)
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Bike year & model: 1981 Yamaha TR1
1982 Yamaha TR1 Turbo
1977 XS 750 Sidecar
1984 XT500 4Valve (Austrian Tax saving edition)
1979 RD250/R5/DS7-hodgepodge (in bits)
Sex: Male

Re: Nannos Hotrod TR1 (turbo)

PostAuthor: faffi » Sun Dec 09, 2018 1:50 pm

:GJ:

Turbo will probably muffle enough by itself, especially for your intended use of the machine :cl:
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