collapse

www.dimecitycycles.com


www.restocycle.com

www.CITYLIMITMOTO.com

www.jadusmotorcycleparts.com

www.bisonmotorsports.com

www.speedmotoco.com

www.cognitomoto.com

www.townmoto.com

www.sparckmoto.com

www.Moto-Madness.com

www.pistonsociety.com

www.steeltowngarage.com


Author Topic: Hollywoodmx's XV920 Tracker - Quick Build  (Read 36299 times)

Offline HollywoodMX

  • Posts: 774
Re: Hollywoodmx's XV920 Tracker - Quick Build
« Reply #190 on: Jul 31, 2017, 10:58:19 »
Hey! Yes, I did run a restrictor, but still I couldn't get enough oil-pressure to the turbo. I'll try a completely different approach on where to pick up the oil for the turbo next. I was just wondering, whether you had the same issues and how you got around them or whether it was something to do with my engine (as it seems).

The bike looks gorgeous, even without a turbo!  ;)
That's good to know.  Seems like you have a few choices then. I thought I remember reading you can upgrade the 920 pump with an xvs pump but I can't remember. Did you try opening the lower bolt a little for more flow?

You could add a mechanical oil pump which will be a pain and full custom as it will have to be driven off the crank on the left side.

Last option is get a new turbo. There are turbos while pricey that don't require oil or coolant feeds. They use these on Harley's and I've seen wierd setups where they put them at the end of the exhaust too.

http://compturbo.com/products/turbos/ct2

Thanks for the feedback on the bike. Graphics really make the difference. In my city I've never even seen a vintage street tracker. Lots of cafes and street fighters tho.
TR1 Build thread: http://www.dotheton.com/forum/index.php?topic=54733.0
Xv920 Tracker thread: http://www.dotheton.com/forum/index.php?topic=59754.15

77 KZ1075 Supercharged - 81 Yamaha XV920rh (x2) - 06 YZ250 highly modified - 08 Hyabusa

"I live my life a 1/4 beer at a time"

Offline der_nanno

  • Posts: 251
  • Faster!
    • Greasy Greg
Re: Hollywoodmx's XV920 Tracker - Quick Build
« Reply #191 on: Aug 01, 2017, 17:43:54 »
I thought I remember reading you can upgrade the 920 pump with an xvs pump but I can't remember. Did you try opening the lower bolt a little for more flow?

You could add a mechanical oil pump which will be a pain and full custom as it will have to be driven off the crank on the left side.

Last option is get a new turbo. There are turbos while pricey that don't require oil or coolant feeds. They use these on Harley's and I've seen wierd setups where they put them at the end of the exhaust too.

http://compturbo.com/products/turbos/ct2

Already running a very late XV oilpump, which is similiar to what is installed in the BT and XVS models. I thought about adding a mechanical oil-pump out of a pit-bike pump (I've built something along those lines years ago as a scavenge pump for a completely different turbo setup), but you'd have to build a complete filtration system etc. so it's not really worth it.

I have to admit, before I go down that oil-less-turbo route, I'll put a classic blower on the bike. I already have an Eaton kicking around, but currently simply not enough time to engineer a drive-system from scratch.
Real freedom starts with the freedom of thought.

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

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 HollywoodMX

  • Posts: 774
Re: Hollywoodmx's XV920 Tracker - Quick Build
« Reply #192 on: Aug 01, 2017, 18:05:38 »
Already running a very late XV oilpump, which is similiar to what is installed in the BT and XVS models. I thought about adding a mechanical oil-pump out of a pit-bike pump (I've built something along those lines years ago as a scavenge pump for a completely different turbo setup), but you'd have to build a complete filtration system etc. so it's not really worth it.

I have to admit, before I go down that oil-less-turbo route, I'll put a classic blower on the bike. I already have an Eaton kicking around, but currently simply not enough time to engineer a drive-system from scratch.
Well I can tell you. I have a supercharged kz1000 and it's waaaaaaaaaaaaay more work than that expensive turbo in the long run. The xv also doesnt have the room for it either. My sc the size of another xv cylinder and head. Maybe Ur thinking centrifugal, but it's major headaches regardless.

Even though I thought of turboing my xv and got the stuff, I now can't imagine a FI xv really now. I hit red line so fast as is and have to shift all the time Na. Now my cafe xv has a higher limit 8500 but that bike gets through the rpms faster than this tracker.
TR1 Build thread: http://www.dotheton.com/forum/index.php?topic=54733.0
Xv920 Tracker thread: http://www.dotheton.com/forum/index.php?topic=59754.15

77 KZ1075 Supercharged - 81 Yamaha XV920rh (x2) - 06 YZ250 highly modified - 08 Hyabusa

"I live my life a 1/4 beer at a time"

Offline der_nanno

  • Posts: 251
  • Faster!
    • Greasy Greg
Re: Hollywoodmx's XV920 Tracker - Quick Build
« Reply #193 on: Aug 02, 2017, 02:18:24 »
But you already mentioned the two points that both bug and challenge me: expensive and more work/more challenging.

I am an engineer and currently (sort of) working at uni. Means no money, but a lot of time and I have the workshop to suit. If I wanted simple, I'd simply get a different bike. It's the challenge that gets me with this one...  ;D
Real freedom starts with the freedom of thought.

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

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 HollywoodMX

  • Posts: 774
Re: Hollywoodmx's XV920 Tracker - Quick Build
« Reply #194 on: Aug 02, 2017, 03:39:13 »
But you already mentioned the two points that both bug and challenge me: expensive and more work/more challenging.

I am an engineer and currently (sort of) working at uni. Means no money, but a lot of time and I have the workshop to suit. If I wanted simple, I'd simply get a different bike. It's the challenge that gets me with this one...  ;D
Well my cafe engine was far from simple and enough engineering to keep any builder busy. Think of the people who pioneered the xv1100 conversion to 920s. I did the same with big bore 920s. Piston kits exist on the market because of the engineering done by Greg (big twins), Arias and I. Mine was the first to prove it as well.

That cafe is a gambit of all the best ideas new and old. Modified frame, under 400 lbs, 41mm dual fcrs, equal length exhaust (to the inch), ignitech ignition, race cams, modified head to fit the cams, race valve springs for higher red line, roller cam bearings, R1 coils, 9 pack vx1100 clutch (was that you? I can't remember) I took it a next step by adding race springs which you now get a free workout pulling the clutch, ported heads, 190 rear tire on a stock swingarm, I think was the first for that as well. I pioneered the triumph shock swap. The gsxr steering stem is also on the market because of me.

What I'm trying to say is there is enough engineering you can do without going FI to make a rad bike. I look forward to finishing the cafe next but I worry about how many hours are left.

When I think of all the lost time I spent building these bikes I would rather be riding them. This tracker has taught me that lesson. FI just makes everything that much more complicated and this tracker with cams, cam bearings, 42mm hsr, custom 2 into 1 exhaust, dynateck coils, its fun enough to ride as is. It would almost be time to shift before the boost can really do anything. It would likely die from either heat or hitting the redline too much. You should have an intercooler on this bike as the notable increase in compressed air temp plus air cooled twin is a recipe for disaster.

Not trying to tell you what to do just some wisdom from someone who knows these bikes better than most. There are only an handful of people in the world who have taken these bikes to another level and I'm not talking about the copy cats who make a few bucks copying Greg H. design and selling them or the bigger shops who put a modern front end but then cheese out on the rear wheel with mismatch wheels. That's not innovation, that's cutting corners.

Sorry for my rant. I'm just happy to ride the bike at 98% completed. There are a few things I need to clean up.
TR1 Build thread: http://www.dotheton.com/forum/index.php?topic=54733.0
Xv920 Tracker thread: http://www.dotheton.com/forum/index.php?topic=59754.15

77 KZ1075 Supercharged - 81 Yamaha XV920rh (x2) - 06 YZ250 highly modified - 08 Hyabusa

"I live my life a 1/4 beer at a time"

Offline der_nanno

  • Posts: 251
  • Faster!
    • Greasy Greg
Re: Hollywoodmx's XV920 Tracker - Quick Build
« Reply #195 on: Aug 02, 2017, 16:26:54 »
Well my cafe engine was far from simple and enough engineering to keep any builder busy. Think of the people who pioneered the xv1100 conversion to 920s.

In the US you mean, right? The 1100 conversions on both TR1s and 750ies started about 20 years ago in Europe. (check out TR1.de, the oldest references of hopped up TR1s and 750ies) That being said, I don't mean to offend and yes I catch your drift. It's just, I do not only have ONE TR1, it's multiple and the two of them which are roadworthy are built for completely different reasons - the Tractor is my everyday ride and the turbo is for those days, when I just want to engineer stuff for engineering's sake.
 
That cafe is a gambit of all the best ideas new and old. Modified frame, under 400 lbs, 41mm dual fcrs, equal length exhaust (to the inch), ignitech ignition, race cams, modified head to fit the cams, race valve springs for higher red line, roller cam bearings, R1 coils, 9 pack vx1100 clutch (was that you? I can't remember) I took it a next step by adding race springs which you now get a free workout pulling the clutch, ported heads, 190 rear tire on a stock swingarm, I think was the first for that as well. I pioneered the triumph shock swap. The gsxr steering stem is also on the market because of me.

Yup 9-disk-clutch was me, first (modified Triumph-rear shock was about ten years ago... but the XT-shock is better, which is why I gave that one up...) - yup, I have (by now) gone the other way and actually lowered the spring pressure a bit, exactly for this reason, still works fine when adjusted correctly.

What I'm trying to say is there is enough engineering you can do without going FI to make a rad bike. I look forward to finishing the cafe next but I worry about how many hours are left.

Not planning to go FI to be honest, it would be relatively easy, with the necessary funds, but I don't find it very tempting to be honest...

Not trying to tell you what to do just some wisdom from someone who knows these bikes better than most. There are only an handful of people in the world who have taken these bikes to another level...

Sorry for my rant. I'm just happy to ride the bike at 98% completed. There are a few things I need to clean up.

Well, I've been working and hopping up TR1s for the last 16 years, so I guess, I may know a thing or two about them ;-) That being said, input is always welcome. It might not always be new stuff, but sometimes simply someone telling you WHY they did something a certain way, is helpful per se.

Cheers
Greg
« Last Edit: Aug 02, 2017, 17:34:52 by der_nanno »
Real freedom starts with the freedom of thought.

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

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 HollywoodMX

  • Posts: 774
Re: Hollywoodmx's XV920 Tracker - Quick Build
« Reply #196 on: Aug 03, 2017, 01:43:34 »


In the US you mean, right? The 1100 conversions on both TR1s and 750ies started about 20 years ago in Europe. (check out TR1.de, the oldest references of hopped up TR1s and 750ies) That being said, I don't mean to offend and yes I catch your drift. It's just, I do not only have ONE TR1, it's multiple and the two of them which are roadworthy are built for completely different reasons - the Tractor is my everyday ride and the turbo is for those days, when I just want to engineer stuff for engineering's sake.
 
Yup 9-disk-clutch was me, first (modified Triumph-rear shock was about ten years ago... but the XT-shock is better, which is why I gave that one up...) - yup, I have (by now) gone the other way and actually lowered the spring pressure a bit, exactly for this reason, still works fine when adjusted correctly.

Not planning to go FI to be honest, it would be relatively easy, with the necessary funds, but I don't find it very tempting to be honest...

Well, I've been working and hopping up TR1s for the last 16 years, so I guess, I may know a thing or two about them ;-) That being said, input is always welcome. It might not always be new stuff, but sometimes simply someone telling you WHY they did something a certain way, is helpful per se.

Cheers
Greg

I'm not saying I'm the first to big bore as there have been many, I'm saying I'm the first to get it to market for others. My design is being sold across the world with many kits going to Europe.

The 1100 swap reference was to think of of the effort people put into figuring that out. I'm was more comparing that effort with design and engineering that I had to do.

The first triumph shock reference was to modern triumph shock suspension may have been done before outside of North America but nothing in seen recorded. Mine actually didn't need mods really though. I could see an xt shock being a lot softer ride.

Triumph is too stiff though and could use a softer spring. But at high speeds it does well.

I thought it was you that designed the clutch idea. Great idea. Even my tracker is suffering clutch issues. It's not crisp enough for me. I had to modify my case cover on the cafe to get it to fit.
TR1 Build thread: http://www.dotheton.com/forum/index.php?topic=54733.0
Xv920 Tracker thread: http://www.dotheton.com/forum/index.php?topic=59754.15

77 KZ1075 Supercharged - 81 Yamaha XV920rh (x2) - 06 YZ250 highly modified - 08 Hyabusa

"I live my life a 1/4 beer at a time"

Offline der_nanno

  • Posts: 251
  • Faster!
    • Greasy Greg
Re: Hollywoodmx's XV920 Tracker - Quick Build
« Reply #197 on: Aug 03, 2017, 04:08:30 »
Oh without a doubt, you had to put your braincap on more than once during your build(s), which is why I keep following them here and back on VTF, when you built the cafe. As you said to many Greg H. clones out there already.

Regarding shocks: There used to be a stiffer spring from WP-suspension for the old XT (steeper progression) and that would probably be the perfect spring. With two full grown (i.e. around 400 pounds of weight) the progression at the very end is a bit too soft. It's not bottoming out, but I'd wish for a bit more. But as I mostly ride alone, it's absolutely perfect.

Oh and talking of firsts: I am working on the very first double-squishband, small-valve head setup for a TR1.1 at the moment meant to work with stock pistons and still getting a solid 10:1 compression. (Talking about innovation)
Real freedom starts with the freedom of thought.

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

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 JAGspeed

  • DTT BOTM WINNER
  • *
  • Posts: 107
Re: Hollywoodmx's XV920 Tracker - Quick Build
« Reply #198 on: Aug 03, 2017, 10:53:25 »
Great pics of the bike the Tank looks cool in the background. Was wondering what happened to this build, but I get it my XV stalled for a bit because of LIFE. I finally started to make some progress lately though. Was debating on doing engine mods possibly XVS crank, pistons, and high perf cam. No turbo quite yet. I know you have experience with this and thought at one point recommend leaving it stock but I'm not sure I can help myself. I know it's a disease. Any recommendations DR.  ....
XS650 Tracker build Mod Style: http://www.dotheton.com/forum/index.php?topic=48134.0
Cafe XV920R Mega-Build: http://www.dotheton.com/forum/index.php?topic=55864.0
CB750 Resto-Mod build:http://www.dotheton.com/forum/index.php?topic=58358.0

Offline HollywoodMX

  • Posts: 774
Re: Hollywoodmx's XV920 Tracker - Quick Build
« Reply #199 on: Aug 03, 2017, 11:43:29 »
Oh without a doubt, you had to put your braincap on more than once during your build(s), which is why I keep following them here and back on VTF, when you built the cafe. As you said to many Greg H. clones out there already.

Regarding shocks: There used to be a stiffer spring from WP-suspension for the old XT (steeper progression) and that would probably be the perfect spring. With two full grown (i.e. around 400 pounds of weight) the progression at the very end is a bit too soft. It's not bottoming out, but I'd wish for a bit more. But as I mostly ride alone, it's absolutely perfect.

Oh and talking of firsts: I am working on the very first double-squishband, small-valve head setup for a TR1.1 at the moment meant to work with stock pistons and still getting a solid 10:1 compression. (Talking about innovation)
Well the triumph shock isn't close to bottoming ever. The opposite really. It reacts well to high speed bumps but low speed bad payment is an issue. One big bump is ok. Multiple bumps is the issue.

I'm not sold on small valve setups. Ie 750 heads on 920s. But curious of the progress regardless.
Great pics of the bike the Tank looks cool in the background. Was wondering what happened to this build, but I get it my XV stalled for a bit because of LIFE. I finally started to make some progress lately though. Was debating on doing engine mods possibly XVS crank, pistons, and high perf cam. No turbo quite yet. I know you have experience with this and thought at one point recommend leaving it stock but I'm not sure I can help myself. I know it's a disease. Any recommendations DR.  ....
920s out perform all virgos including the xvs. 1100s are Long strokers. More tq less hp, less rpms . It's about how you want the bike to feel when riding it.

For me it's about hp. These bikes ooze tq by default.
TR1 Build thread: http://www.dotheton.com/forum/index.php?topic=54733.0
Xv920 Tracker thread: http://www.dotheton.com/forum/index.php?topic=59754.15

77 KZ1075 Supercharged - 81 Yamaha XV920rh (x2) - 06 YZ250 highly modified - 08 Hyabusa

"I live my life a 1/4 beer at a time"