Author Topic: CR750 Street Bike Build Update (Read 13818 times)

ev0lution7 · « **Reply #25 on:** May 04, 2009, 08:00:09 PM »

that thing looks AWESOME i cant wait to togo town on some high speed and hear that thing you guys got me all excited...

BTW what tripple tree top is that...
what tires are those..
what rear tire size is that

i know the front end is a GL... but the rest eludes me.....

I want some details!

mikeb4 · « **Reply #26 on:** May 04, 2009, 08:01:08 PM »

I appreciate that a lot but do you think it's ready yet? I might be cutting my chances with the bike still raw .... what do you think?

I still need to decal, make & install the seat, mount the chin pad and finish the carb tuning with the pods installed and mount the bar end mirrors etc ..... still a ways to go. Should look great with all of the details done but still kinda raw looking right now ...

mikeb4 · « **Reply #27 on:** May 04, 2009, 08:07:05 PM »

ev0lution7
that thing looks AWESOME i cant wait to togo town on some high speed and hear that thing you guys got me all excited...

Thanks ... the pipe do sound nice ... throaty with a snap to them ...
BTW what tripple tree top is that - just stock and I cut down the barmounts and fill.what tires are those - the Kenda's with tubes to work with the spoked aluminum rim's.what rear tire size is that - I used a 140 on a 3.5" wide 18 aluminum rim ... DID brand stainless spoked to the stock hub.
Stock pipes cut down, inverse ends welded back on and trimmed down ... nice fit and beefy construction ... too heavy for a race bike.
Thanks for the support!

Sam Green Racing · « **Reply #28 on:** May 04, 2009, 08:10:17 PM »

Well it's been seconded by Derek seaweb who's bike has also been nominated.
You have a month to sort the decals but, BAR END MIRRORS $:-\$ $:-\$ $:-\$

leave them till next month.

Sam.

ev0lution7 · « **Reply #29 on:** May 04, 2009, 09:23:08 PM »

what rear rims are those... i know those front rims.. are GL1000 rims??

you said it was a stock tripple tree... was it a Gl1000 front end or a F2/3 ??

seaweb11 · « **Reply #30 on:** May 04, 2009, 09:38:47 PM »

Mine isn't even painted yet

MJL · « **Reply #31 on:** May 04, 2009, 11:37:03 PM »

Wow. I'm diggin it.

DME · « **Reply #32 on:** May 04, 2009, 11:52:42 PM »

Very nice

Love the colorchoice, eyecatching yet classic!

Keep up the good work!

Cheers
Dan

odin836 · « **Reply #33 on:** May 04, 2009, 11:55:44 PM »

Hi Mike,

Can you please provide a little detail on what you did regarding the instrument lights.
I too want to ditch the standard config and minimise the look.

I've looked into a few options, but yours seems neat and basic (the look I am going for)

Cheers.

mikeb4 · « **Reply #34 on:** May 05, 2009, 04:47:40 AM »

Quote from: ev0lution7 on May 04, 2009, 09:23:08 PM

what rear rims are those... i know those front rims.. are GL1000 rims??

you said it was a stock tripple tree... was it a Gl1000 front end or a F2/3 ??

It's just a standard DID 18" x 3.5" aluminum rear rim and the front is the one that comes on the GL1000 ...... I have had best luck with the 1975-1977 GL1000 models .... seem to fit perfectly on the CB750 frame. This is my second one with this setup ....... fixes a lot of issues: aluminum spoked rim, dual disc's, 37 mm beefier forks, tapered steering head bearings, etc ......

mikeb4 · « **Reply #35 on:** May 05, 2009, 04:55:43 AM »

Quote from: odin836 on May 04, 2009, 11:55:44 PM

Hi Mike,

Can you please provide a little detail on what you did regarding the instrument lights.
I too want to ditch the standard config and minimise the look.

I've looked into a few options, but yours seems neat and basic (the look I am going for)

Cheers.

You know it was just something I ground out of a piece of aluminum plate .... I was sitting there thinking how can I lower and snug the two instruments together more? so I traced out a pattern and kept trimming it until I had the right shape .... I also drilled three holes for mini-lamps - red for oil pressure warning, green for neutral and yellow for turn signals. I wanted to retain some idiot lights for street functionality but wanted them to be almost invisible. Lastly I painted the ignition switch base satin black to match so it would disappear into the top triple.

One thing I wished I did better on my last CR build was the instruments mounting .... I used the CB750 plate and it made the tach and speedo stick up in the air ..... so that was my motovation.

ev0lution7 · « **Reply #36 on:** May 05, 2009, 07:17:54 AM »

so what does the GL1000 front end exactly fix.. you said it gives you more rake?

the reason i ask is because my 750 seems "fixed" with stock stuff... and some mods done to them...

mikeb4 · « **Reply #37 on:** May 05, 2009, 07:33:41 AM »

I'm not sure about the rake? I did not worry about that ... "issues" was probably a bad term to use ... what I really meant was easy solutions to getting a dual brake setup and alumium rim for the right look and performance

.

The All Balls tapered steering bearing kit is all you need to mount the full GL front end, it comes with the races for the neck. I also drilled and tapped the lower triple for stops to keep those low clip-ons from hitting the tank.

Maxacceleration · « **Reply #38 on:** May 05, 2009, 08:27:50 AM »

Very nice!
I am doing a very similar 'mini-me' version in the 550.
I'm a bit behind-powdercoated frame back, wheels from Buchanans back and bodywork painted.
Not to hijack, your bike is gorgeous!
But here is my mock-up pic...

mikeb4 · « **Reply #39 on:** May 05, 2009, 09:38:40 AM »

Looks great! keep it going you are right on track! I would like to do a 550 and a 400-4 sometime, very cool bikes!

andy750 · « **Reply #40 on:** May 05, 2009, 10:00:33 AM »

Excellent work Mike and the colour really jumps out -looking forward to seeing the decals on. The instrument cluster is really well done!

cheers
Andy

Kev Nemo · « **Reply #41 on:** May 05, 2009, 11:39:46 AM »

You probably went over this in another thread, but what's up with the rear-sets-custom or off the shelf?

odin836 · « **Reply #42 on:** May 05, 2009, 01:21:33 PM »

Quote

I also drilled three holes for mini-lamps - red for oil pressure warning, green for neutral and yellow for turn signals. I wanted to retain some idiot lights for street functionality but wanted them to be almost invisible.

Where did you pick up the "mini-lamps" from? Are they 6 or 12v?

Cheers!

Maxacceleration · « **Reply #43 on:** May 05, 2009, 01:42:12 PM »

What and where do you pick up the chin pad material.
Something I need to do also.
Thanks!

mikeb4 · « **Reply #44 on:** May 05, 2009, 06:35:57 PM »

Thanks everyone .... let's see, the rearsets are the common Raask from Omar's, the mini lamps I use are just Radio Shack 12v's with rubber grommets to shock mount them, and some of the best chin pad material is Hydroturf used for jetski footwell mats, very dense closed cell foam and good UV resistance and what I used on the red bike.

Thanks again! hope to have it more completed by the end of the weekend - Mike

Sweep · « **Reply #45 on:** May 06, 2009, 05:39:09 AM »

Mike, is it me or does your oil pressure look high at idle? I'm getting this from your youtube vid.

mikeb4 · « **Reply #46 on:** May 06, 2009, 11:36:08 AM »

I'ts a fresh motor with cold oil, I expect it will be high then drop after warm up and break in. What's the spec when the oil is hot and motor broken in?

seaweb11 · « **Reply #47 on:** May 06, 2009, 01:52:14 PM »

My new 100 mile engine runs at 60lbs right now, my old 78k is the same.

78CB750CAFE · « **Reply #48 on:** May 06, 2009, 02:21:48 PM »

my bike starts at about 60psi from cold start, after warm up and steady idling around 1200-1500rpm it drops to around 30 psi.
3k and over it runs 40 and up to 60-65psi nearing the redline

Sweep · « **Reply #49 on:** May 06, 2009, 02:57:46 PM »

yeah I'm like 40psi at idle, your bike looked to be 80+ at idle but I couldn't see for sure.

Of course, yours is a 78 and mine is a '76 so there could be differences in the top end oiling, I don't know.

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Author Topic: CR750 Street Bike Build Update (Read 13818 times)

ev0lution7

ev0lution7

ev0lution7