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Author Topic: Nanno's "mule" a TR1 for everyday  (Read 6216 times)

Offline der_nanno

  • Posts: 529
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    • Greasy Greg
Re: Nanno's "mule" a TR1 for everyday
« Reply #50 on: Mar 17, 2019, 07:56:27 »
Let there be music (because the overall video quality isn't much to write home about):

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: 529
  • Faster!
    • Greasy Greg
Re: Nanno's "mule" a TR1 for everyday
« Reply #51 on: Mar 26, 2019, 03:37:29 »
Now that's (sort of) a first: working against performance and towards everyday reliability and longevity.

Step 1: As suggested by Sepp Koch, I have started playing around with softer valve springs to give the valve train a chance to live a bit longer as the seatpressure of the stock valve springs, especially in a 700 or 750 is through the roof. I only shaved off about 10kg (100Nm) of seat pressure, but every bit helps.



As you may or may not remember, I replaced the base gasket, with liquid gasket in an attempt to get the piston closer to the squishband in the cylinder head. This works perfectly, but it has the downside, that every time you loosen the head, you have to re-seal the cylinder foot as the cylinder pulls up on the unsupported side, which is a bit annoying. Luckily the liquid gasket I chose can be cleaned off quite easily with some brake cleaner and a brush, so  it was maybe an extra ten minutes per cylinder to get everything squeaky clean again. (Making sure no oil leaks onto the mating surfaces or not dipping your finger into the gasket goo is much more of a challenge!)



There is a slight shift in timing, even with a brand new timing chain, so ultimately (once the chain stretches a bit), I'll probably have to make an adjustable cam sprocket, but until then, we'll just earmark this as a mod to shift timing towards more torque.  :cl:



Last but not least: a softer timing curve with less advance. I had some detonation issues on the old engine, so tuning everything towards running a bit softer should be a good thing, especially with the tightened up squish, I hope to have finally found a way to keep detonation in check. Oh and that curve from 8000 to 9000rpm going to zero, that's my little life-saver as the rev-limiter on Ignitechs works fine until you overshoot it, e.g. by missing a gear. (At least in older versions it did and I am too much of a chicken to find out, if it's good now.)



Bit more on the blog (as usual): https://greasygreg.blogspot.com/2019/03/the-new-tr1-engine-softer-valve-springs.html
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: 529
  • Faster!
    • Greasy Greg
Re: Nanno's "mule" a TR1 for everyday
« Reply #52 on: Aug 14, 2019, 05:48:52 »
THIS is how a Yamaha XV should idle an be sync'ed...



(More to come)
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: 529
  • Faster!
    • Greasy Greg
Re: Nanno's "mule" a TR1 for everyday
« Reply #53 on: Aug 18, 2019, 05:24:52 »
Alrighty, I'll do it rather briefly - this post is still work in progress and is basically a hands-on guide on how to install VM38s on a Yamaha XV (doesn't exactly matter whether we're talking 700, 750, 920, TR1 or 1100 really)



https://greasygreg.blogspot.com/2019/08/everyday-tr1-all-new-vm38-9.html

(I'll add some more parts numbers, e.g. for the 2in1-throttle cable and the dimensions for the carb to frame elbows, once I have gathered them!)
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: 529
  • Faster!
    • Greasy Greg
Re: Nanno's "mule" a TR1 for everyday
« Reply #54 on: Aug 18, 2019, 05:28:25 »
The next post on here (and on my blog is about stock and softer springs for the VM38) - in summary two pictures should suffice. 25 percent less wire diameter, means pretty much 25 percent less force required to lift the slides. As you have to work two slides... well you can probably do the maths.





The softer spring is a VM34/55 and should be available from the same sources you buy your VM38 from.

https://greasygreg.blogspot.com/2019/08/mikuni-vm38-difference-between-light.html
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: 529
  • Faster!
    • Greasy Greg
Re: Nanno's "mule" a TR1 for everyday
« Reply #55 on: Aug 18, 2019, 05:30:22 »
This one's a dear one to me... running an Ignitech box under the tank, where it can get quite toasty. I had planned for ages to move it under the seat, just like they did on the 1100s anyway. This one really only applies to the older models (750, 920)



https://greasygreg.blogspot.com/2019/08/everyday-tr1-moving-ignition-box-under.html
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: 529
  • Faster!
    • Greasy Greg
Re: Nanno's "mule" a TR1 for everyday
« Reply #56 on: Aug 18, 2019, 05:33:10 »
And last but definitely not least, a bit of a report on how the air-screw affects the mixture and how you find the proper setup with a wideband...



(The corresponding video was posted a few posts back)

Have fun reading:

https://greasygreg.blogspot.com/2019/08/everyday-tr1-tale-of-afrs-at-idle.html
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