Well here it is !

Hurricane SF project 90% finished, really it's been my ebay project bike!!

I still need a good tank and a more agressive rear tire.

It turned out to be a really nice day here in St. Louis, so I ran home at lunch and rode the cane back to work.

It's my first run on the cane and she has decent low through the gears and I am really pleased with the low end, but when I get up to 60 mph and cruising she boggs a little when I roll on the gas, I will have to check into that. anyway here are the pics.

http://s26.photobucket.com/albums/c103/sirr1/hurricane%20SF3/?action=view¤t=MVC-006F.jpg

i bet the bogging down is cause of the open intake. check out diechrome's thread about his streetfighter.

http://www.cbrforum.com/m_141300/tm.htm

nice, especially where the frame sliders are located. they can double as highway pegs.

what is wrong with the tank?

the fuel tank has a few dents on the left side and it's sun faded.

The frame sliders I made out of 2in OD pipe, I used a 2 in hole saw and cut the ends out of 1/8 in steel I had laying around the garage, they turned out pretty good and the position works well for highway pegs.

quote:

ORIGINAL: rrasco

i bet the bogging down is cause of the open intake. check out diechrome's thread about his streetfighter.

http://www.cbrforum.com/m_141300/tm.htm

interesting, I checked out diecrome's thread and I will give it a try. I removed the 2 snorkes from the airbox to make room for the wiring harnes so the airbox has the 2 holes in front to suck in air.

Thinking out load here, I wonder if closing the 2 front air intake holes with tape and boring the same size hole in the air box lid would slow down the enough, hmmmm.

Thanks for the info!

High speed power loss problem and solution!!!!

First off, thanks for every ones input to my problem and your link to Diecromes post, it was a big help!!

Originally, in my SF project I had some restrictions on the wire harness do to the elimination of the front and side fairings.

I used the left air inlet through the frame to run the wire loom from the speedometer and lights to the main wire harness, so I tucked the main wire harness behind the radiator fill cap and in front of the carb’s air boxes.

Hey I figured this would be a good place to stash the wire harness up and out of the way from the motors heat and away from any excess rain / water in wet riding conditions. So off came the air box inlet snorkels to make room for the wire harness.

So basically the setup I had was the stock air box minus the 2 snorkels.

The Cane ran great until top gear was hit and the bike was cruising around 60 mph, she fell flat on her face, no power, the motor bogged until lower speeds were achieved and the revs climbed back up only to lose power again at speed.

So I posted my problem here on the forum and Diecrome had an interesting solution.

He used tape to cover 1/2 of the intake holes on the 600 and this corrected his problem. The problem was, he did not explain which holes he covered, the air box or the frames inlet holes.

So I got to thinking….

I removed the tank and I reinstalled the stock air box snorkels, but there was a problem, the stock length of the snorkel from the air box to the frame interfered with the wire harness.

The stock air box snorkels have several exterior support or structure lines molded onto the snorkels to prevent collapse from suction of air into the carbs.

Starting at the frame end of the snorkel I removed 1 section of rubber snorkel at a time using a razor knife until I was able to fit the snorkel securely on the air box and in between the wire harness.

Basically I removed 2 sections of rubber from each end of each snorkel and reinstalled them onto the air box.

This corrected my high speed power loss, she runs great, Big smile !

As Diecrome suggested in his post it appears that the force or rush of air at speed on the Hurricane throws off the air pressure in the air box and some type of restriction is needed to equalize the air pressure on the Cane carbs.

Hmmmmm, you learn something new every day!

Sorry for rambling. John

it's only rambling if there is no point being made.

SIRR1 you should post up some pictures so I know exactly what you did. I really don't like the tape covering the intake holes and I was trying to figure out another easy alternative. Let me know

Diecrome, pic's tommorrow!

Well funny you should mention duct tape on intake holes(personally I don't like disassembling farings and such) cus My friends brothers baby momma used two round pieces of plastic with holes cut in it(like a salt shaker) and super glued them to TOP of the intake holes, it works!! First he put 3 big ones but then made like 10 small ones that look and i guess work better. personally I would not be taking things of my bike that belong there....but that's my bike! hope it works

Pic's of intake snorkel modification to correct high speed bogg.

http://s26.photobucket.com/albums/c103/sirr1/Hurricane%20snorkel%20mods/?action=view¤t=PB050217.jpg&slideshow=true&interval=3

Thanks you SIRR1, that's exactly what I needed.

Interesting side note to my SF project.

This past Thanksgiving weekend both Friday and Saturday we had a break in the weather here in the Midwest with temps in the low 70's so this gave me a chance to really give the old cane a good run for the money.

On Friday I rode with 2 friends, one on a KLR650 Supermoto and the other on a Triumph Speed triple.

We rode the upper bluff roads from Columbia Illinois to Chester Illinois and back. Twisty, hilly, curvy two lane roads that run along the bluffs over looking the Mississippi river.

Now my riding partners are quite vursed on two wheels having run Deals Gap with them several times and this being my first real run on the cane we are all very comfortable riding wheel to wheel at speeds with each other knowing that one would crash before taking out another.

Anyway, we started running the Bluff road with the triple out front and the KLR and then myself at the rear. I really wanted to run the cane to test the brakes, suspension and just to see how well she would run on the twistys and just to make sure that nothing would fall off or come loose being this was the first run.

After about 10 miles I started to feel comforatable on the cane and started to press the KLR's ass end in the corners and on the straights not really looking to pass just run in the corners and hammer it comming out.

I do have to say the 20 year old Hurricane Street fighter ran very well, the only problem I had all weekend was a leak in the gasket between the slip on muffler and the header which gave the Hurricane a high pitch bird chirp sound as I passed the KLR on the straights, and a blown right fork seal which I bottomed out hard in a corner.

We rode about 130 miles both days and the Hurricane averaged 44.3 miles per gallon running hard in the twistys all day, so I am very pleased with the project to date.

One thing interesting I found, is that when I put my feet up on the crash pegs at highway cruising speed (65-70) and my legs tucked in next to the tank the motor bogged when I rolled on the gas. Hmmm. so I would open my legs up away from the tank and the bike ran fine, tuck in my legs and hit the gas and bogg, hmmmm.

So, I assume that with my legs in against the tank it creates a vaccum and it affects the air/fuel flow into the carbs. So I just kept my legs off the tank sides and enjoyed the ride!

We rode the same route on Saturday with another friend on a SV650 and he rode 3rd right behind the KLR and the tripple and he was not at all pleased, I smoked him in the corners and out, down the straights and back in the corners, it was great and he was pissed.

It got to the point where he would just wave me by him because he could not keep up the pace and he made the comment he was going to sell the SV this spring for something else, I said I have a Hurricane for sale and He flipped me off and we all laughed.

So yes, I figured out what all of the hype is about on this old motorcycle, she flat out runs very well and I am glad I took the time and money to go from the salvage yard to street fighter!!

John

john is it possible that you're pinching the gass line a lil when your legs are tucked against the tank?

Jersey,

no, the fuel line is behind the left side panel and not piched.

This only happens in 6th gear running 55-70 with my feet on the crash bobbins and my legs against the tank.