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blackout

Street/Strip XSR 700 Build

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blackout

I decided to use Tyga's silencers that are used on their VFR400 kit.  The current plan is to mount one on each side just below the passenger pegs. 

 

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Craig Mapstone
Upstate New York

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blackout

Rizoma drag bars installed.  The XSR700 uses 1 1/8" bars, necked down to 7/8", so options were limited.  These are machined from solid billet aluminum,  crazy stuff.   As expected, I had to limit the steering with drag bars.  This time I did it with a polymer 3d printed piece pressed over the frame stop.  It's a snug fit and nothing else is keeping it in place.  Time will tell if it comes loose.

With the drag bars so low, I had to reroute the throttle cable and clutch cable, but all seems good.

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  • Like 4

Craig Mapstone
Upstate New York

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watarski

Nicely done!  The Tyga pipes are new to me, but look really good.  

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blackout
On 11/3/2020 at 9:48 AM, watarski said:

Nicely done!  The Tyga pipes are new to me, but look really good.  

Thanks!  Tyga is well know for their 2 stroke pipes.   Started by two guys from the UK that apparently wanted the business friendly environment of Thailand. 

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Craig Mapstone
Upstate New York

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stickshift

Looks great!

I've used Tyga exhausts before, good quality for the price.

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blackout

Both axle plates for the 8 inch over swingarm are mostly done.  They are sized to accept 1.5 inch, .095 inch wall, DOM steel round tubing.  (Drawn Over Mandrel).  1 inch tubing will be used for the trestles. 

Aluminum block washers still need to be machined along with the chain tensioning blocks.  But that comes last. 

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  • Like 6

Craig Mapstone
Upstate New York

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blackout

My weekend project is to pour a nice concrete ramp to get the bikes in and out of the house shop easily. 

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Craig Mapstone
Upstate New York

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Evill_Ed

Who's Cooler than you 😉

  • Haha 1

Act like a Clown and Funny Things will happen.

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blackout
9 minutes ago, Evill_Ed said:

Who's Cooler than you 😉

My kids.  Lol

  • Haha 1

Craig Mapstone
Upstate New York

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blackout

Nothing motorbike exciting, but the ramp into the shop is done.

 

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Craig Mapstone
Upstate New York

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blackout

Two into two exhaust coming along slowly.   

 

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Craig Mapstone
Upstate New York

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bornagainbiker

Looking good. 👍

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Give Respect To Get Respect   https://jgphotoart.pro/

 

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blackout

Two into two exhaust is done.

 

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  • Like 6

Craig Mapstone
Upstate New York

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Evill_Ed

Great work Craig, they look great. Have you run it yet? How does it sound? We are going to need a sound clip 😁

 

Ed 

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Act like a Clown and Funny Things will happen.

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blackout
7 minutes ago, Evill_Ed said:

Great work Craig, they look great. Have you run it yet? How does it sound? We are going to need a sound clip 😁

 

Ed 

It sounds fantastic,  though I did not ride it on the road.  I have a sound clip, but it's not that great as I just used my phone.  I'll try to post it.

Sounds better than my fz07r.

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Craig Mapstone
Upstate New York

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DewMan
1 hour ago, blackout said:

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I just want an explanation of why there are so many outlets in that room. 🤔

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DewMan
 
Just shut up and ride.

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blackout
7 minutes ago, DewMan said:

I just want an explanation of why there are so many outlets in that room. 🤔

Ha. Ha.  There used to be computer work stations along that wall.   

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Craig Mapstone
Upstate New York

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blackout

A video clip from my phone.

  • Like 7

Craig Mapstone
Upstate New York

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Evill_Ed

Oh Yeah! That  sounds good 👍🏻

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Act like a Clown and Funny Things will happen.

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blackout

Getting ready to pull the swingarm.   Not sure if I'm being paranoid or safe.  Lol

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Craig Mapstone
Upstate New York

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mossrider
Just now, blackout said:

Getting ready to pull the swingarm.   Not sure if I'm being paranoid or safe.  Lol

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I wouldn't be paranoid as long as you're using that apparatus in that fashion...

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VEXX

Very nice work.

One question (I'm not a mecanic, engineer or something, just curious) don't 2 in 1 in 2 pipes work better than ?

Scavaging pulses or something?

I really like the way people experiment on this forum, very nice to see and learn.

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blackout
3 hours ago, VEXX said:

Very nice work.

One question (I'm not a mecanic, engineer or something, just curious) don't 2 in 1 in 2 pipes work better than ?

Scavaging pulses or something?

I really like the way people experiment on this forum, very nice to see and learn.

Assuming you design a system that scavages, then yes, a 2 into 1 has benefits.  The stock system does not scavage, so I'm not going backwards there.  And hard to say how well aftermarket systems scavage.  I feel the 2 into 2 offers the least resistance and with long straight-through mufflers (no baffles to restrict sound and flow), I'm hoping for some good performance numbers. 


Craig Mapstone
Upstate New York

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shinyribs

Blackout, the pipes look great, man! 

"Designing" for scavenging and such...I know there's some hard science involved, but I think it mostly falls in to trial and error, especially in the home shop. 

A short while ago I hung a pair of CRF 250 mufflers on a slightly built XR400. Only because i thought it would look cool for a sumo to have twin cans. That engine ( single cylinder) had twin exhaust ports, so the stock arrangement was 2 into 1. The CRF twin muffler assembly fit up to the stock slip joint location, so I ended up with 2 - 1 - 2  by default. Given the stock muffler was wide open and notoriously loud, I was mainly shooting for looks and a quieter exhaust. Certainly didn't expect any performance increase due to flow alone. Surprisingly, the bike absolutely ripped with that setup. I mean, wheelies in 4th with no clutching up and high rpm throttle response was noticably improved. I had to up the main jet and play with the needle height a bit, but low rpm function was completely preserved. Lucky strike, but it was awesome. It's very rewarding to come up with your own thing and discover that you landed on something that works really good. Hotridding at it's core! Keep at it! 

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