Author Topic: 1971 CB750 with GSXR Front End (Read 99089 times)

reedrunner23 · « **Reply #150 on:** September 16, 2014, 12:05:21 PM »

Also that M-Unit is sweet. I found a place that sells them for $310 plus free shipping but still havent pulled the trigger. Def want to hear about it when you get it wired all up.

https://www.moto-madness.com/motogadget-munit-digital-control-center-v2-p-1285.html

SOHC4 Cafe Racer Fan · « **Reply #151 on:** September 16, 2014, 12:16:25 PM »

Quote from: reedrunner23 on September 16, 2014, 12:05:21 PM

Also that M-Unit is sweet. I found a place that sells them for $310 plus free shipping but still havent pulled the trigger. Def want to hear about it when you get it wired all up.

https://www.moto-madness.com/motogadget-munit-digital-control-center-v2-p-1285.html

That's the best price I found for the M-Unit. Moto-Madness does not have the full line of Motogadget products, but they have the best price on that one. Revival seems to carry most of the Motogadget line. They have a sweet Black Friday sale on the weekend following Thanksgiving, too.

GNGSXR · « **Reply #152 on:** September 30, 2014, 10:49:30 AM »

Turn signal and brake/running light tabs welded on.

Tabs for the aluminum plate that the license plate will be mounted too.

GNGSXR · « **Reply #153 on:** September 30, 2014, 10:59:25 AM »

Tank that came with the bike.

The CB500T tank that was modified to fit on here.

Soooooo much work just so I could get a tiny bit thinner tank. The tank was shortened by about an inch from the back and the "saddles" on the front were relocated. We also had to modify this area to allow the carburetors to do their job.

Getting set to pressure test it. It only needed a couple spots re-tigged to make sure I don't catch on fire.

I think all the welding and fabrication work is complete. The only little things I can think of left to do are relocating the horn and figuring out how to mount the magnet/pickup for the acewell speedo.

GNGSXR · « **Reply #154 on:** September 30, 2014, 11:43:12 AM »

I plan on riding this bike a lot. More so up in the mountains along with around town. I have seen a lot of regulators/rectifiers burn up when they are not positioned in a place to get proper airflow. The cowl area would get zero airflow so I decided to mount the regulator, rectifier, and starter solenoid here. I was originally going to mount the solenoid closer to its original location anyways cause extending that stock wire is not possible in a way that I am comfortable with. If you take a look at it's connection to the stator then you will know what I mean. It was a toss up between let the electrical devices bake in an almost sealed off box or put them here as shown. Yes there is residual heat from the oil tank and motor but I hope this is better considering it will get airflow.

It will almost not be noticeable with the bracket powder coated black, maybe spray the regulator black, put black rubber boots on the starter solenoid. I have some weather pack connectors to install as well on these devices.

SKTP · « **Reply #155 on:** September 30, 2014, 12:02:26 PM »

WOWZERS! This thing looks amazing

SOHC4 Cafe Racer Fan · « **Reply #156 on:** September 30, 2014, 06:07:12 PM »

Quote from: GNGSXR on September 30, 2014, 10:59:25 AM

Tank that came with the bike.

The CB500T tank that was modified to fit on here.

Soooooo much work just so I could get a tiny bit thinner tank. The tank was shortened by about an inch from the back and the "saddles" on the front were relocated. We also had to modify this area to allow the carburetors to do their job.

Getting set to pressure test it. It only needed a couple spots re-tigged to make sure I don't catch on fire.

I think all the welding and fabrication work is complete. The only little things I can think of left to do are relocating the horn and figuring out how to mount the magnet/pickup for the acewell speedo.

That "little" bit of custom will make you smile when someone spots it.

GNGSXR · « **Reply #157 on:** October 01, 2014, 06:41:12 AM »

I didn't realize there was a hole under the cowl/seat area. Well I did but I just assumed the vertical part of the cowl covered this hole. I was wrong. The back of the bike is to the left in the picture. I think I will get enough airflow up into the cowl area especially with how the license plate bracket will be mounted. Time to relocate stuff again. The starter solenoid will most likely go above the K&N filters.

Zax · « **Reply #158 on:** October 02, 2014, 09:43:04 AM »

Great project, Any chance of getting details and maybe some pics on the CB550 swing arm mods to allow for the 170mm tire?

Zach

Badluckhonda · « **Reply #159 on:** October 25, 2014, 12:03:40 PM »

Hey man quick question when you used the 550 swingarm did you notice that one side of the pivot point was offset more then thee other ? I ask because I wanna do the swap and I'm afraid my stock 750 wheel won't line up anymore

Badluckhonda · « **Reply #160 on:** October 26, 2014, 11:02:30 AM »

Do you think the offset will allow 750 sprockets to align, using the 750 wheel and spacers ?

CognitoMoto · « **Reply #161 on:** October 27, 2014, 06:25:37 AM »

Quote from: calj737 on October 26, 2014, 12:22:37 PM

Should not be a problem to get the 750 wheel to fit. You might need to adjust your spacers slightly depending upon year of wheel etc.

I did this on my cb750. I had to play with the spacers on the back to get wheel centered again.

7aliveatlast7 · « **Reply #162 on:** November 01, 2014, 06:31:37 AM »

Holy cow, what a nice build! That 500 tank was a lot of work, but details like that are what set bikes apart from others. Late to the party, but tuned in!

spiffy587 · « **Reply #163 on:** November 08, 2014, 07:22:29 PM »

I have a 77 750k and am trying to run a 550 swing arm the gap between the two where the axle slots are is 1". Not sure if that is too much to widen the 550 swingarm.

GNGSXR · « **Reply #164 on:** November 09, 2014, 09:01:08 AM »

Quote from: Badluckhonda on October 25, 2014, 12:03:40 PM

Hey man quick question when you used the 550 swingarm did you notice that one side of the pivot point was offset more then thee other ? I ask because I wanna do the swap and I'm afraid my stock 750 wheel won't line up anymore

It should be fine. Just play around with the spacers a bit.

Rocky2010 · « **Reply #165 on:** November 10, 2014, 04:29:24 PM »

May I say that you should think about cutting your kick starter down so it is just above the top of the clutch casing that would make for a very clean look.
I use to do that in the 70's a nice touch I would think

GNGSXR · « **Reply #166 on:** December 13, 2014, 07:44:33 AM »

Work is slowing down and I can finally get back to finishing this bike. I've picked out the final colors so the bodywork and frame will be painted and powder coated by christmas.

QUESTION! I am thinking about using spoked rims front/rear. I have the front figured out but I am needing help finding a bike that uses a rear 5x17 spoked rim preferably with a cush drive and brake disc. Anyone have any ideas?

Retro Rocket · « **Reply #167 on:** December 13, 2014, 02:32:12 PM »

Quote from: GNGSXR on December 13, 2014, 07:44:33 AM

Work is slowing down and I can finally get back to finishing this bike. I've picked out the final colors so the bodywork and frame will be painted and powder coated by christmas.

QUESTION! I am thinking about using spoked rims front/rear. I have the front figured out but I am needing help finding a bike that uses a rear 5x17 spoked rim preferably with a cush drive and brake disc. Anyone have any ideas?

CycleX have exactly that....

Down near the bottom of the page..

http://www.cyclexchange.net/Wheel%20Page.htm

frodef2 · « **Reply #168 on:** December 13, 2014, 10:16:20 PM »

Or head over to ebay and search for ducati sport classic rim.

They have spoked 5,5x17" rear and 3,5x17 front rim as stock.

If you want a higher performance rim, do a search for alpina spoked rim.
They make a tubeless spoked rim for the ducati sport 1000

http://home.online.no/~fro-j5/artimages/cb750/ducati.JPG

ggrant · « **Reply #169 on:** December 15, 2014, 10:17:32 AM »

Quote from: GNGSXR on December 13, 2014, 07:44:33 AM

QUESTION! I am thinking about using spoked rims front/rear. I have the front figured out but I am needing help finding a bike that uses a rear 5x17 spoked rim preferably with a cush drive and brake disc. Anyone have any ideas?

ktM 690 DUKE

http://www.ebay.com/itm/2007-2010-KTM-690-Supermoto-SMC-OEM-17-Rear-Wheel-SM-R-Stock-Rim-Hub-07-08-/151512866067?pt=Motorcycles_Parts_Accessories&fits=Make%3AKTM%7CModel%3A690&hash=item2346dedd13&vxp=mtr

What did you pull the front off of?

GNGSXR · « **Reply #170 on:** December 15, 2014, 10:33:49 AM »

Quote from: ggrant on December 15, 2014, 10:17:32 AM

Quote from: GNGSXR on December 13, 2014, 07:44:33 AM
QUESTION! I am thinking about using spoked rims front/rear. I have the front figured out but I am needing help finding a bike that uses a rear 5x17 spoked rim preferably with a cush drive and brake disc. Anyone have any ideas?

ktM 690 DUKE

http://www.ebay.com/itm/2007-2010-KTM-690-Supermoto-SMC-OEM-17-Rear-Wheel-SM-R-Stock-Rim-Hub-07-08-/151512866067?pt=Motorcycles_Parts_Accessories&fits=Make%3AKTM%7CModel%3A690&hash=item2346dedd13&vxp=mtr

What did you pull the front off of?

Awesome thanks.
The front is off a 2006 Suzuki GSXR600. Cognitomoto has all the pieces I need to do the front if I do decide to do spoked wheels.

Nuffsa Fugginnuff · « **Reply #171 on:** December 30, 2014, 11:57:48 PM »

Subscribed.

Excellent build, came across this thread via a 'search': twin disc front end. Has answered just about all my questions.

GNGSXR · « **Reply #172 on:** February 01, 2015, 10:41:02 AM »

No real updates. Been working, traveling, and sold my '06 GSXR 750 and picked up this.

The CB will be headed to paint and powdercoat after I get back from this show http://the1moto.com/events/2014/10/18/the-one-motorcycle-show-2015

Trad · « **Reply #173 on:** February 01, 2015, 11:34:21 AM »

This whole build is awesome. Can't wait to see the finished bike.

Riceman · « **Reply #174 on:** February 01, 2015, 01:26:45 PM »

Just caught up with this build,Nice...

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Author Topic: 1971 CB750 with GSXR Front End (Read 99089 times)