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Discussion Starter · #1 ·
My quest to get the old XX down to 430lbs has begun. I had the Titanium Akra exhaust fitted in Portland this last weekend. My intent was to lose weight and fix the dead midrange. Well, it accomplished both and more. Akra claims a 23 pound weight loss switching to this system. After handling the stock components (those cans must be made of lead!!) and then the Akra pieces I think it's got to be more than that. But since I didn't get a chance to weigh the pieces I'll just have to assume Akra did and they know what they're talking about. The stock jetting was VERY lean. The pipe and revised jetting fixed the dead spot so it pulls strong all the way from the bottom (like an 1100 should!). Oh, and I picked up 12 yes 12HP! It's not just on top either. The HP advantage starts at 4000RPM and goes until the rev limiter. Anyway, I've got the dyno sheets if anyone wants to see them I will scan them and post them. I'll also scan the photos when I finish the roll and get it developed. The Ti can looks so good with the black bike.

The next significant weight loss would have to be wheels but that's some serious $$$$$! The next chapter in this quest may be a while coming.....

Progress: 492lbs now down to 469lbs.

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James

If you're gonna ride a couch, why not just stay home?
 
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Sounds cool James. With 12 extra ponies, that thing has got to be a beast. Does the '97 XX have LBS?

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Pete
"Four wheels move the body, two wheels move the soul."
 

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pete has a good point there. so long as you're getting wheels, brakes wouldn't be a bad idea too. you can dump the lbs (linked braking system) and lbs (pounds) that go with it. maybe pm could work on a deal with you.

how about some clip-ons? team pro-mo sells clip-ons with c/f bars (i wanna say they're just over 200, e-mail them and they'll send you a price). they aren't expensive for what you get and they should be lighter than the risers i recall the xx having. they use them on their r1 and r6 racers.

change sprockets yet, stock ones are heavy? may wanna go down a size in the chain and sprockets as well, like to 530 or even 520.

you can also look for after market bodywork and sell your stock lights and mirrors and go with some piaa driving lights and some small turn signals. you should be able to sell your stock stuff for enough to cover that bill (if it's perfect).

if you don't carry a passenger, that subframe can be taken in a bit, just leave a place to mount a tail light.

good luck, hope i've helped.

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Tony

the views and opinions expressed by tony (cbrf2boy) are the ramblings of a total idiot. sbw.com, it's administrators, moderators, and members don't necessarily agree with and are not responsible for anything this idiot has to say.

for more ramblings try cbrf2boy

[This message has been edited by cbrf2boy (edited September 27, 2000).]
 

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Unfortunately, my riding buddy put his 97 blackbird on a crash diet last wednesday :eek:. If you decide to ditch the stock bodywork, let me know. He will begin the rebuilding process pretty soon and will be in search of replacement parts.

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Yoyodyne makes complete sets of Ti replacement fasteners (Bolts) that can save quite a bit of weight if you have the patience to match & replace the stock bolts.
Changing the LBS might also require different front & rear master cylinders, which could get to be kind of expensive, unless you source cyls from a wrecked CBR900 or 600.

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two bros used to sell kits for it, but i doubt you'd save weight.

if you're willing to spend big bucks, you can get ap or pm calipers and rotors with nissan gp master cylinders, or....and they should be lighter.

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Tony

the views and opinions expressed by tony (cbrf2boy) are the ramblings of a total idiot. sbw.com, it's administrators, moderators, and members don't necessarily agree with and are not responsible for anything this idiot has to say.

for more ramblings try cbrf2boy
 

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Discussion Starter · #8 ·
Wow, thanks for all the great info! I was thinking about ditching the LBS but I wasn't sure how to go about it. The LBS itself hasn't bothered me yet but there should be a little weight savings, with some of it being unsprung because of the added caliper complexity, and I desperately want to get some stainless or kevlar lines on it. I got used to the stainless lines on my TL-R and when I first got the bird I thought there was air in the lines. Anyway, the LBS envolves extra master cylinders and quite a bit of extra hydraulic plumbing that needs to go. I also converted my TL-R to 520 chain and aluminum sprockets. I couldn't believe how heavy the stock stuff was when I picked up the box of parts. Do you think a 520 would be OK on the 'Bird? I guess if it's OK for the TL-R's torque it should be alright? Most of the other ideas I hadn't really thought about so I appreciate all of the input. Unfortunately I1aCBR, I probably won't be doing the bodywork soon enought to help out your buddy. I'll look into the ideas you've all given me and keep you posted on how things are going. And Camel, I should have some pictures ready by the end of the week.

PS - Is this OK in Daily Rider or should I continue this in the Honda specific section?

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James

If you're gonna ride a couch, why not just stay home?

[This message has been edited by Birdman (edited September 27, 2000).]
 
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<BLOCKQUOTE><font size="1" face="Arial, Helvetica, sans-serif">quote:</font><HR>Originally posted by Birdman:

PS - Is this OK in Daily Rider or should I continue this in the Honda specific section?

<HR></BLOCKQUOTE>

Birdman, I'll move it over into the "How do I" forum.



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Pete
"Four wheels move the body, two wheels move the soul."
 
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Sounds like a great project....would like to see the pics.I really like the LBS...when you come into a corner too hot....banked way over with the tips of your toes up on the pegs,you just need a finger tip on the front lever to get front and rear brakes....you don't have to shift your entire leg up to get your foot on the rear brake ....just something to remember.

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xxman
 

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Discussion Starter · #11 ·
I hope no one is expecting pic's of the carbon fiber wheels, swingarm, and frame. Magnesium wheels maybe, but the rest of that stuff is pure fantasy for me. I'm also working on shoehorning a 375HP smallblock V8 into my '87 Rx-7 :D :eek: so the toy fund is quite thin.

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James

If you're gonna ride a couch, why not just stay home?
 

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i saw a 5.0 in an 70-85 rx7.

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Tony

the views and opinions expressed by tony (cbrf2boy) are the ramblings of a total idiot. sbw.com, it's administrators, moderators, and members don't necessarily agree with and are not responsible for anything this idiot has to say.

for more ramblings try cbrf2boy
 

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you probably already did this, but just in case your looking to lose just a few more pounds.. i heard removing the center stand will help.

looking forward to the pics

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Discussion Starter · #14 ·
Yep, the center stand is gone. The Akra system requires that you lose the stand. I can still attach the stand if I want to use it but the exhaust no longer has the "stop" for the center stand to swing up against. I don't miss it too much because this is the first bike I've owned that had one but I have to admit they're kind of handy.

Still working on those pic's for you. I wanted to get a couple more today but it looks like it may rain. Maybe I'll take some in the garage or something.

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James

If you're gonna ride a couch, why not just stay home?
 
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Gas tank ? http://members.aol.com/fuelcel/
Kinda expensive tank , but when you do the body work look 'em up.

you could ditch the battery, and jump start it all the time ... Hey 430lbs shouldn't be hard to push :D ;)


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Adam
 

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Dymag makes single-sided carbon fiber swingarms to go along with their wheels. They could probably make you one for the Blackbird. The two wheels and the swingarm will only run about $10 or $12 thousand. :eek: :D

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John

"If Harley made an airplane... would you fly in it?"
 

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Discussion Starter · #17 ·
While I'm at it I might as well have them make me a whole frame :rolleyes:. Man, I wish I wasn't so into road trips. Then I could just go get an R1 or 929 or or or, and get it over with. Oh well, if I can pull this off I'll end up with something reasonably light, very powerfull, and comfortable too. I know, "wimp"! :eek:

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James

If you're gonna ride a couch, why not just stay home?
 

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Whats amatter? Gave up on the rotary engines?
What motor are you putting in? A 350?
Oh yeah, definately get pictures, sounds like a really cool project. I would love to rebuild my F2 with a 900RR motor, but...

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If if if....
If a frog had wings, he wouldn't bump his ass every time he jumps!

[This message has been edited by funksouljon (edited September 29, 2000).]
 

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Discussion Starter · #19 ·
I wouldn't say I've "given up" on the rotary. In fact you can get that kind of power and even more out of a rotary but it will be overstressed and barely streetable and you still will never have the bottom end torque of a v8. 375HP is quite modest for a 350 so it will be reliable, very driveable, and cheap to buy parts for. It will also have a power to weight ratio equal to or better than a Dodge Viper :D. It only adds about 150 pounds to the total weight and by relocating some components like the battery etc. you can even still have the perfect 50/50 weight balance. That's a pretty long term project but I guess you guys aren't going anywhere so I'll make pic's available when things do happen.

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James

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My impression was the rotary motors didn't maintain peak performance as long as a normal combustion motor would. Your take?
Also, I don't remember, did anyone mention switching to aftermarket bodywork allaround? If you do, then you could get an uncut nose piece and customize the headlights. On my F2 I did this and built an aluminum braket for a couple of fog lamps and saved serious weight. The wiring is simple if you have a book with the eletrical diagram. This also allowed for another light switch to shut the headlights off totally. Just for looks mind you.

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If if if....
If a frog had wings, he wouldn't bump his ass every time he jumps!
 
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