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Author Topic: CBX550-Brat/urban scrambler on a budget  (Read 46560 times)

Offline NoRiders

  • Posts: 729
Re: CBX550-Brat/urban scrambler on a budget
« Reply #40 on: Dec 30, 2015, 10:04:13 »
some nice work going on. those wheels are wild.........how times have changed

top job on the seat  :)

Thanx Chris, Once I've finalised the seat fitting and lock down I'll have it upholstered.

Wheels are what they are, can't afford to have spoked rims as I want to retain the CBX inboard discs. I'll be getting flack for running tracker/enduro tyres but I like the look and will never push their limits of adhesion.

Offline NoRiders

  • Posts: 729
Re: CBX550-Brat/urban scrambler on a budget
« Reply #41 on: Jan 01, 2016, 14:30:39 »
Well, after a good amount of reading and thinking, I've decided not to dick with the shock mounts. Offering the CBR shock up and raising the top mount by 40mm would push the shock cap/mount into the airbox and make it slightly out of vertical angle alignment which might cause fouling/binding issues.

So, plan B will be instigated.

I sell Protech Shocks into the VW aircooled market and will have a one-off 2.25"ID 13 stage adjustable monoshock coil-over 'made to measure' with alloy billet endcaps and rose joints at 275mm (static length) with a suitable spring circa 350lb (tbc). The adjustable damping will be useful, but getting the static length and spring rate correct is key.



I figure 185kg bike and 90kg rider = 275kg or 600lbs. So a 55:45 ratio would need circa 350lb/6-7" coil...am I correct?

Any advice or experience of coil rates for a 185kg (dry) bike and 90kg rider would be useful please.  I'll be talking to Protech to get their advice as well, so should know more of the spec next week. Coils can be swapped out relatively easily and cheaply, so no great shakes if I have to increase/decrease poundage.

I wanted to have the stock ride height if possible, unless there is an advantage to raising the rear a few mm without any detriment to the handling (despite the chunky/clunky tyres).

Oh yeah, fork gaiters arrived from Honkers and fit, yay!

Thanks for checking in chaps. HNY2016 to all  :D

Offline NoRiders

  • Posts: 729
Re: CBX550-Brat/urban scrambler on a budget
« Reply #42 on: Jan 03, 2016, 18:33:18 »
Small update, but progress as I have stripped out the fork triple tree to access the head bearings. Now, I think they've been changed as there is very little signs of wear n tear, but they look like pattern bearings. I have no problem with that, and would change them if there were marked signs of wear, but aside from the odd blemish everything is shiny and wear free.



I think I'll grease them up and be done :)

Painted up the fork mounts, and a few other bits I'd cleaned up recently.



Jobs to do:

Fill forks with oil
Paint fork legs
Fit gaiters
Install forks and front wheel/brakes...
..so I can roll it outside to clean the engine down properly. I don't fancy doing it in the garage as it'll be a bloody mess.

Offline NoRiders

  • Posts: 729
Re: CBX550-Brat/urban scrambler on a budget
« Reply #43 on: Jan 05, 2016, 11:25:46 »
Well, after a good amount of reading and thinking, I've decided not to dick with the shock mounts. Offering the CBR shock up and raising the top mount by 40mm would push the shock cap/mount into the airbox and make it slightly out of vertical angle alignment which might cause fouling/binding issues.

So, plan B will be instigated.

I sell Protech Shocks into the VW aircooled market and will have a one-off 2.25"ID 13 stage adjustable monoshock coil-over 'made to measure' with alloy billet endcaps and rose joints at 275mm (static length) with a suitable spring circa 350lb (tbc). The adjustable damping will be useful, but getting the static length and spring rate correct is key.



I figure 185kg bike and 90kg rider = 275kg or 600lbs. So a 55:45 ratio would need circa 350lb/6-7" coil...am I correct?

Any advice or experience of coil rates for a 185kg (dry) bike and 90kg rider would be useful please.  I'll be talking to Protech to get their advice as well, so should know more of the spec next week. Coils can be swapped out relatively easily and cheaply, so no great shakes if I have to increase/decrease poundage.

I wanted to have the stock ride height if possible, unless there is an advantage to raising the rear a few mm without any detriment to the handling (despite the chunky/clunky tyres).

Oh yeah, fork gaiters arrived from Honkers and fit, yay!

Thanks for checking in chaps. HNY2016 to all  :D

Just off the phone to a bike shock specialist who have/sell Protech Shocks build dampers to their spec. Mike was very helpful and gave me the build spec he uses for CBX550s.

Length 285mm open (I'm raising it 10mm from stock)
13 stage damping adjustment
650lb-6" coil
Rose jointed billet alloy end caps - anodised in gold (hopefully)
10x40 & 10x50mm mount spacers.

Should look good and work well.

Here's a link to the UK motorcycle dealers webpage: http://shock-factory.co.uk/m-shocks-home.html

Offline NoRiders

  • Posts: 729
Re: CBX550-Brat/urban scrambler on a budget
« Reply #44 on: Jan 05, 2016, 16:20:02 »
The cleaning continues......it'll get more interesting soon, I promise :)

Coils



...and NGK caps & leads.



I might change the leads but they're known to be OK and still look in good condition. A job for later maybe?

Taking in the alternator cover into club workshop to try and see what a wirewheel finish looks like, nt bothered about a high shine, a brushed finish would do nicely.

More anon.

Offline beachcomber

  • DTT SUPPORTER
  • *
  • Posts: 3980
  • TJ - Beachcomber
Re: CBX550-Brat/urban scrambler on a budget
« Reply #45 on: Jan 06, 2016, 06:38:31 »
That's the problem with plug leads - they can "look" OK !!!!!

They're so cheap [ or knit your own ], it's not worth taking a chance on.

Having been involved directly with the development of plug leads [ 8mm silicone Hi-Po jobbies ] - and done considerable testing with OEM units [ new and used ] - they would be my first item to change / replace.

A quick trawl of E-Bay will get you the Hi-Po silicone 8mm wire for something like 3.00 / metre !!

Here's some I developed for RAM [ BMW Kay series ]



"if at first you don't succeed, you've already been a failure once"

" we're not going back to the sixties - we never left "

"yep, nostalgia ain't what it used to be"

"I used to be indecisive - now I'm not so sure"

Offline NoRiders

  • Posts: 729
Re: CBX550-Brat/urban scrambler on a budget
« Reply #46 on: Jan 06, 2016, 20:13:04 »
I knew as I typed I'd be changing them......purchased this item last night:

http://www.ebay.co.uk/itm/121249613315?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

Orange 8mm silicon leads. Thanks for your comment beachcobbler.

Bit more done tonight.





Generator cover and fork brace 'burnished' on the wire wheel and a few parts blacked....that'll do nicely  :D

« Last Edit: Jan 06, 2016, 20:44:07 by NoRiders »

Offline NoRiders

  • Posts: 729
Re: CBX550-Brat/urban scrambler on a budget
« Reply #47 on: Jan 08, 2016, 16:42:33 »
Torque about needing this:



28 of your English pounds buys you a low torque 3/8" drive for all the important bolts/nuts on the build.

About time I owned one :D Do you?

Offline NoRiders

  • Posts: 729
Re: CBX550-Brat/urban scrambler on a budget
« Reply #48 on: Jan 11, 2016, 17:26:27 »
This lovely little film popped up on FB, hope it copies and play OK.

Link:

Offline Weasel

  • Posts: 170
  • 3rd generation rider
Re: CBX550-Brat/urban scrambler on a budget
« Reply #49 on: Jan 16, 2016, 15:48:22 »
Love where you are going with this mate. Can't wait to see the finished product. Good work so far.