View Full Version : 1978 gs750

12-05-2010, 10:25 PM
hey guys, started this project for my little bro awhile back but he ended up liking and keeping an xs650 i ran across. it is a 1978 gs 750 which was a partial trade in for another bike i made. the bike is currently registered till nov 2011 so i want to bust this thing out and back on the road asap!. the bike is further along but i don't have any pics of it's current state. i'll post some up in the next couple days. i want to make this bike kinda look like those ariels/royal enfield bikes with skinny wheels and full fenders but of course in my interpretation. i will be running floorboards, beachbars and a girder front end which i have but am chopping down to make very short. here are a few pics of what i have and also a couple of pics for inspiration.......







12-11-2010, 11:58 PM
Looking forward to seeing more pictures on this one. I am hoping to get my hands on a GS850 in the near future.

12-12-2010, 12:12 AM
i have been alittle busy with my little bro's bike and my shovel but hopefully this week i can bust out the frame. i am excited about this one. always wanted to do vintage looking one!

12-14-2010, 6:51 PM
hey guys just wanted to post some progress pics of this project. feels good to be able to just work on this one the whole day without having to stop for others! i can prolly finish fabbing/welding the main part of the frame tomorrow( gussets ect.) then it would just be tabs and such for accessories. check em out..........







12-14-2010, 8:23 PM
looks good. What is the rear wheel off of?

12-14-2010, 9:23 PM
i believe the rear wheel came from a 81 cb750,the front came off a cb400. as you can see, i am not brand or model specific!:) whatever the hell fits....ha ha ha

12-16-2010, 7:23 PM
hey guys,just posting up some more progress pics. today i mounted the floor boards and worked on the book rack. i made the book rack from some 1/2 inch roundstock. just measured here, bend there, tack this and weld that. before you know it, i almost got it done, just gotta final weld all the pieces together and then fabricate some tabs on the frame to bolt it onto. check it out.........





12-17-2010, 3:14 AM
nice progress. reminds me of a vintage bicycle.

12-17-2010, 2:12 PM
Yeah, Im watchin..

12-17-2010, 2:26 PM
fuck looks awesome, so did you make the frame?

12-17-2010, 5:48 PM
that honduki is looking good so far.

12-17-2010, 6:40 PM
Something different but not so much it sucks.Im liking it.

12-17-2010, 7:48 PM
fuck looks awesome, so did you make the frame?

yep, made the frame. hopefully i can have this back on the road in a week or so. i am excited!

12-22-2010, 8:57 PM
hey folks just wanted to post a couple of update pics. i took a girder front end i had laying around and basically cut it in half! i had to make the lower triple tree cause it didn't have one when i bought it. i graphed the gs750 neck stem into a lower tree i had made for another front end some years ago. well, here is the pic of the girder before and what it is now.........





12-24-2010, 6:55 PM
was a sunny day in socal today so i took the lil beast out to see it's first rays of sunlight








12-25-2010, 8:23 PM

This bike looks fucking fantastic. I would love if it was sprung instead of that girder. I do like it though

It evens looks like it could be a little fast

12-25-2010, 9:29 PM
thanks bud, i am trying to copy the old enfields an such that's why i flipped the girder.

12-28-2010, 8:43 PM
hey folks just wanted to post a couple of progress pics. today i bought some tubing and sheetmetal to make the mufflers for this thing. took me a while to figure it out but here is the first one.



12-29-2010, 2:33 AM
This is one cool project...very impressed.
Would like to know the design for the springers if possible..sizes? (think if i used them I would have the straight leg to front...would that alter designl lyout a lot? )
Cant wait to see this pipe in action...get a vid up asap so we can hear it :)

12-29-2010, 4:59 AM
Voivod, thats a GIRDER, not a springer.

12-29-2010, 7:48 AM
Voivod, thats a GIRDER, not a springer.

Brain to typing hand fault :banghead:

12-29-2010, 1:46 PM
alright guys, gotta fess up alittle. the mufflers are not really mufflers. i just molded sheetmetal over a long piece of pipe. i figured the pipe being so long it would provide enough back pressure for the beast. i will be running 2 into 1's.

12-29-2010, 2:48 PM
not so sure bout the pipes on it.
i think it would have gotten that certain look youre after with going with the old style fishtail tips.

12-29-2010, 4:47 PM
i'm always up for fishtail but i just thought that the pipes being this long they left alot of empty space , that and i am trying to make it look somewhat like the orignal design?

01-25-2011, 10:14 AM
took me a few minutes to find this thread! guess it's been awhile but i got sidetracked with the honda rebel bike i flipped. anyhow i finished fabbing the bike and i will post some pics of how she stands later today before i tear her down for final weld and paint.i am excited this thing is freakin sweet........

01-25-2011, 7:22 PM
looks cool man! I like the back rack and the round rod around the fenders.

01-25-2011, 10:30 PM
well folks, here are the last pics of this bike taken earlier today. i finally finished fabbing everything and broke it down for final weld and paint. hope you all like it and see ya on the other side!!!






01-25-2011, 10:58 PM
Love the looks but whats with all the tabs bewteen the tanks?

01-26-2011, 4:54 AM
i will be shaving the tabs down before its all done and then the one right in the middle will be holding a lever/knob for the choke!

02-08-2011, 8:57 PM
Love this bike, great work. I'm wanting to build a KZP 1000 in a similar fastion. Ever think of sell drop me a line.

02-08-2011, 11:07 PM
i am currently painting the bike and will be done in about a week. been taking me alittle longer than usuall to paint this one cause i have been kinda sick and also working on painting my little bro's bike. can't wait to finish and ride this bad boy!

02-09-2011, 4:38 PM
i am currently painting the bike and will be done in about a week. been taking me alittle longer than usuall to paint this one cause i have been kinda sick and also working on painting my little bro's bike. can't wait to finish and ride this bad boy!

Dude, at first I wasn't sure how it would turn out (by you decryption of the plan) shit the closer you get to getting done, the cooler it looks. I gotta say, it's pretty damned impressive so far.

02-09-2011, 4:48 PM
I also was a little concerned of how this bike would turn out, but it looks pretty nice! Impressive work!

Gotta ask though, whats up with the backwards girder? Looks really strange..

02-09-2011, 9:53 PM
I also was a little concerned of how this bike would turn out, but it looks pretty nice! Impressive work!

Gotta ask though, whats up with the backwards girder? Looks really strange..

the girder was just my interpretation of the girder below....kinda looked backward i guess?


03-01-2011, 10:08 PM
stay tuned folks, got this thing right around the corner now. been busy flipping a bike, chopping the little bro's bike and rebuilding a friends engine all the while working on this project alittle at a time, took forever........... faaaaaaaaaak!!!!!! ok i feel better now. couple more days folks, promise not to disappoint!

03-02-2011, 11:27 PM
one bad ass build great job

03-11-2011, 9:45 PM
well folks finally got this thing wrapped up with the exception of a few minor details. hope you all like it. i will be making a short vid of the bike in action in the next few days.........



















03-11-2011, 9:51 PM
That is fuckinn sweet! Reversed the girder back to original. Fuckin wicked. Makes my GS 750 look like shit.

03-11-2011, 10:02 PM
holy shit sighless!!! ! you are fuckin right, i installed the girder backwards!!!! i just fucken realized tha,. that is why i am having some trail issues with this thing!!!!! welp back on the lift.....

03-11-2011, 11:26 PM
That turned out a whole lot freakin better then what I thought it was gonna look. :killerjob:

03-12-2011, 1:36 AM
Looks tits Lou..
Ya get that front end turned round it'll be good to go man.
Nice job.

03-12-2011, 9:16 AM
Looks bitchin. How did you hook up that remote oil filter? through the oil pressure sensor?

03-12-2011, 9:45 AM
Wow! That's fantasic!
Any chance you're heading up to The Garage Company tonight? I'm in town this week and I just found out about it.

I'd love to get a chance to check out that bike up close and personal! :)

03-12-2011, 10:06 AM
thanks fellas, this bike seemed to take forever to finish. seemed like just when i got a minute to work on this someone elses bike ended up on the lift. anyhow, i think it turned out awesome. i will be taking it on a nice long spin later this weekend. can't wait to see her at wide open throttle. oh, as far as the remote oil filter, this bike had an oil cooler installed when i got it so i just disconnected the lines and attached the filter there.

03-12-2011, 11:59 PM
GS650, yeah, theres an adapter plate there to run an oil cooler. It bolts on where the sending unit for oil pressure switch is. lou canned the cooler, but used the adapter plate and ran hose to a remote filter. Hope this helps ya out

03-19-2011, 8:04 PM
finally got my video clips. my computer crashed and i have been trying to rescue them for a couple days. here is the youtube link


03-19-2011, 10:38 PM
motorlou, hell of a good job man. I seriously dig this bike!
I gotta pick your brain for a minute. I realize that isn't the stock rear rim; but gs750 stock chain 630x96 link right? How much stretch did you add and what lenght are you running now?
I'm about ready to order chain and I hate trying to figure this shit out!! I added 5in to mine and I'm thinkin I can get away with 630x110; but any help would be great. (sorry to thread jack)

03-19-2011, 11:55 PM
Sighless, if you are going to buy a new chain you should do the sprockets too. If you do switch to a 530. Cheaper, lighter, and you can get them about anywhere compared to the 630. I think you'd be better off going with a 120 compared to the 110. If I remember right it takes almost 20 links to make a foot of length (530 chain). So if you added 5 inches you'd have to double that, top and bottom, so ten inches of chain extra is almost 20 links.

03-20-2011, 10:21 AM
to be quite honest i don't remember the length of the chain. i could count it later today but i believe it was going to be almost stock length. the rear wheel is off a cb750 and the front is of a cb400!

03-20-2011, 10:37 AM
rustrocket Yeah, I should replace the sprockets; but they only have a couple hundred miles on them. When I do replace them I plan change chain size. According to this chart I've read, that the pitch on 530s is 5/8 per link and with 630 it's 3/4 per link, IF my math is right 110 is exactly right (5in stretch=10 actual in=13.33333 links 96+14=110) I was just hoping I was gonna have the answer handed to me! lol, can't blame a fella for tryin.

motorlou no worrys man, like I said I was just being lazy and sorry to derail the thread. Did you change chain size?

03-20-2011, 12:39 PM
i left the chain as is since it's not really for me. people always trip out on the size of the chain, i think it's pretty cool!

09-10-2012, 9:09 PM
very very cool. I would vote for bike of the year. :killerjob: