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Author Topic: Nanno's "mule" a TR1 for everyday  (Read 2276 times)

Offline der_nanno

  • Posts: 408
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    • Greasy Greg
Re: Nanno's "mule" a TR1 for everyday
« Reply #30 on: Aug 14, 2018, 14:00:05 »
EFI might be nice, but be aware that running your ignition over MS is not gonna work without a 36-1 wheel driven by the cam. Hot cams... well, they might work, but all the racing guys in Germany (and there's quite a few really fast TR1s), don't have much good to say about the cams aside from the Megacycle ones. Especially as the stock valve springs are too hard and bind rather quickly, which means you have to buy the whole lot, if you want to enjoy your build a little longer.
Real freedom starts with the freedom of thought.

My Blog:
http://greasygreg.blogspot.co.at

My Mule TR1.1 build here on DTT:
http://www.dotheton.com/forum/index.php?topic=75458.0

My Turbo TR1.1 (XV1000) build here on DTT:
http://www.dotheton.com/forum/index.php?topic=72571

My XS Triple Sidecar build here on DTT:
http://www.dotheton.com/forum/index.php?topic=74211

Offline Brodie

  • DTT SUPPORTER
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  • Posts: 2306
  • Gold Coast, Queensland
Re: Nanno's "mule" a TR1 for everyday
« Reply #31 on: Aug 15, 2018, 12:48:01 »
Hey mate. Nominated your bike for bike of the month. Hope your cool with that.
I'm not sure, but don't ask Brodie.

Way to many build and half done projects to list here.
Sr250, Gs750, Z50A, XV1100, A10, Z160A.

Offline der_nanno

  • Posts: 408
  • Faster!
    • Greasy Greg
Re: Nanno's "mule" a TR1 for everyday
« Reply #32 on: Aug 15, 2018, 18:33:44 »
Wow thx for the honours...*blush*
Real freedom starts with the freedom of thought.

My Blog:
http://greasygreg.blogspot.co.at

My Mule TR1.1 build here on DTT:
http://www.dotheton.com/forum/index.php?topic=75458.0

My Turbo TR1.1 (XV1000) build here on DTT:
http://www.dotheton.com/forum/index.php?topic=72571

My XS Triple Sidecar build here on DTT:
http://www.dotheton.com/forum/index.php?topic=74211

Offline der_nanno

  • Posts: 408
  • Faster!
    • Greasy Greg
Re: Nanno's "mule" a TR1 for everyday
« Reply #33 on: Aug 18, 2018, 07:54:46 »
Sort of a somewhat final update. (for now and before I bore everyone to death with it) The engine has now covered roughly 1000km. I am pretty happy with what I've built. It really took until about 750 - 800km for the engine to really free up and start to unleash the full potential. I had to upjet next to everything from the old setting as the engine sucks in a lot more air. My VM38-9s are now set to:

Pilots: 17.5
needle: clip one lower than middle (richer)
Mains: 185
Airscrew: 2.5 turns out

Overall the engine revs happily to 7500rpm, yet still is driveable from 2500rpm onwards, even though I admit, that the old motor with 750 heads had more torque between 2500 and 3000. From then onwards they are on par and from 4000 onwards it's not even remotely comparable. Currently I end up being too fast by about 20 to 30kph wherever I go compared to the old engine. Oil-consumption, even during break-in was rather moderate, at around 300ml on 800km, which makes about 400ml on a thousand and I expect that to get better with the miles clocking up.

So my final verdict, are the welded up heads worth it: Well, yes and no. Yes they are definitely a nice way to make some extra power, but at the cost of shifting the power band up by 500-600rpm. Some more extensive porting might bring that figure down another 100 rpm or so, but that would require some very extensive work including building up the ports etc., which is way beyond scope for a nice lively daily ride. All in all considering the effort involved in making them, I don't think a production run is really viable, give the fact that overall response is non-existant in this forum. So if you're interested: I have one spare set, which I will sell and that's probably it for 2018.
Real freedom starts with the freedom of thought.

My Blog:
http://greasygreg.blogspot.co.at

My Mule TR1.1 build here on DTT:
http://www.dotheton.com/forum/index.php?topic=75458.0

My Turbo TR1.1 (XV1000) build here on DTT:
http://www.dotheton.com/forum/index.php?topic=72571

My XS Triple Sidecar build here on DTT:
http://www.dotheton.com/forum/index.php?topic=74211

Offline der_nanno

  • Posts: 408
  • Faster!
    • Greasy Greg
Re: Nanno's "mule" a TR1 for everyday
« Reply #34 on: Sep 03, 2018, 15:57:37 »
... as if I were ever happy and content, with what I build.



TM38-85, first preliminary jetting tests, show rather promising results with #20 pilots and #180 mains.
Real freedom starts with the freedom of thought.

My Blog:
http://greasygreg.blogspot.co.at

My Mule TR1.1 build here on DTT:
http://www.dotheton.com/forum/index.php?topic=75458.0

My Turbo TR1.1 (XV1000) build here on DTT:
http://www.dotheton.com/forum/index.php?topic=72571

My XS Triple Sidecar build here on DTT:
http://www.dotheton.com/forum/index.php?topic=74211

Offline Brodie

  • DTT SUPPORTER
  • *
  • Posts: 2306
  • Gold Coast, Queensland
Re: Nanno's "mule" a TR1 for everyday
« Reply #35 on: Sep 03, 2018, 16:38:14 »
Now for the fun stuff.
I'm not sure, but don't ask Brodie.

Way to many build and half done projects to list here.
Sr250, Gs750, Z50A, XV1100, A10, Z160A.

Offline der_nanno

  • Posts: 408
  • Faster!
    • Greasy Greg
Re: Nanno's "mule" a TR1 for everyday
« Reply #36 on: Sep 20, 2018, 04:00:53 »
As you might have noticed, I am pretty fond of the TM38s, but the original choke location is annoying as hell. Luckily there's cable chokes.

Let's start off with a bit of "where's Waldo?" - no really there's a choke knob in this picture.



Rising to the occasion I also swapped out the inlet rubbers as the old ones were... old and from my parts bin, i.e. they were already old before they made it there. So there you go: inlet rubbers, 2in1 junction box, a few bowden-cable-ends and two new cable-chokes (M10-thread - thank me later, when you find out, why this info is important   8) )



The nipples are 6mm for the lever on the bars and 4mm for the chokes.


A few tips 'n' tricks, if you plan to replicate this: Rather make the cables a tad longer or you might encounter an over-rich condition when turning the bars. The other trick: always tin up the ends of the cables as well. I usually etch them with "soldering water" (sulphuric acid) and then tin them up the first 5mm (1/4"). Now GENTLY clamp the cables in a vise and adjust so the cable end sits slightly below the end of the nipple. This way the tin will be sucked in into the nipple and you have to do next to no cleanup afterwards.



... and with a tad too much tin, it'll look like this:




That's what it looks like now under the tank. I use an old ratchet strap to hold both junction boxes to my TCI, so they can't rub and stay nicely put.



If you did a half decent job with the cable lengths there should be no need to sync the choke cables, as they only know "full-throttle" anyway.

Blog: http://greasygreg.blogspot.com/2018/09/everyday-tr1-new-tm38-carbs-part-2.html
« Last Edit: Sep 20, 2018, 04:03:20 by der_nanno »
Real freedom starts with the freedom of thought.

My Blog:
http://greasygreg.blogspot.co.at

My Mule TR1.1 build here on DTT:
http://www.dotheton.com/forum/index.php?topic=75458.0

My Turbo TR1.1 (XV1000) build here on DTT:
http://www.dotheton.com/forum/index.php?topic=72571

My XS Triple Sidecar build here on DTT:
http://www.dotheton.com/forum/index.php?topic=74211