1970 Rupp roadster matching numbers

markus

Well-Known Member
#1
I traded a buddy a bike I was going to part out(fox spoiler) for this roadster figuring I would just part this one out instead as he wanted the fox.

Been on the fence about doing that as it is pretty clean. After taking it apart and cleaning stuff and realizing just how complete and clean it is I'm gonna give it a shot as complete original survivor.

its a 1970 and I say matching numbers because it came with the original paperwork and check off sheet from the factory. ( I had made a thread in the general section showing that paperwork)

So there were a couple of little things either missing or not correct. Nothing real major, brake cable throttle and grips etc.. I have been keeping an eye out of original or NOS stuff I did just pick up the original rear cable I needed, and also an NOS set of correct footpegs, And last night when I met member Dbadgley to give him some wheels I media blasted for him, he hooked me up with an NOS headlight ring still in the package as the one on the bike is scratched :thumbsup:

To make it "complete" everything else I need blackwidow and Ruppparts has what I need if I dont see any good original parts in the next week or so.

here is what I started with:


how it came along during cleanup:



some of the stuff I had to repair so far:

The tank mount was broken off the bottom of the tank and the tank was also filled with gummy goo. cleaned out the tank by soaking it for a few days in rust 911 then I flushed it out with POR15 prep clean and some drywall screws and alot of shaking. Its now useable. I then welded the mount back on.



there was also some damage to the muffler and the rear fender from being dropped.

the muff was basically the mount strap cracking at the weld, very common for these. This one was not broke off...yet



so I dremeled around the cracks crimped the strap back in place against the pipe and rewelded trying not to be too sloppy





I blew through it and can still hear it leaking though, which is between the inside of the strap and pipe, So I think I am going to mix up some JB weld and inject it in from the side and fill that gap. I should have taken the strap right off but they can be a bugger to line back up and I did not want any excessive welding

Luckily on the fender the crack is not all that visible when the bike is assembled. the fender itself has beautiful original chrome so I want to at least retain it till another comes along or something like that. I did not want to risk making it worse so I used a strap to help keep the shape of the fender and tweaked the cracked area as close as I could to correct shape and zipped a little weld at the lip after a quick grinding. Hopefully that will keep it together without having to damage the chrome to fix it.

before the welding




Putting it back together I found the jackshaft seemed to have a little slop between the bearing retianers. It actually looked like they either messed up the weld or did it on pupose at the factory on one side of the tube that the assy fits into on the frame to help fix the slop. After everythign was cleaned and bearing replaced with new I still had the slop. So I took the old retainer clip off the old bearing on the driven side and slipped it onto the new bearing right behind the retainers on them to make a shim, it was a perfect fit, and the gap now on the extra retainer ring was a great fit with the factory puddle weld and kinda keeps it in place.




So I have the framework put back together right now after soaking and scrubbing the chrome, and also detailing the frame up. the paint is pretty worn on the tank so I may have to redo it, but I'm gonna see how the bike comes together first.



the condition of the motor is unknown but it does not look bad, there is an issue at the exhaust outlet though the accident that cuased the damage to the pipe and fender jarred the threaded nipple on the motor and it cause it to hobble out the threads. OS I am going to use a black widow style exhaust outlet. One bonus would be I just opened up the flow of the exhaust :laugh:



I'm pulling the flywheel today and will detail the motor reset points etc.. and hopefully get it back on the bike. so i can work on fitting the header/muff together. The carb has gotta come off and be redone still too.
 

ELT

Active Member
#3
I redid a 70 Roadster last year, same color. I saw the same bearing space issue on my jackshaft too. I just let it ride with no extra spacer in there like it was and it caused no problems. Does your engine have the ball bearing on the pto side? Mine didn't and I wondered it the early 70 Roadsters weren't quite that beefed up yet.
 

markus

Well-Known Member
#4
I redid a 70 Roadster last year, same color. I saw the same bearing space issue on my jackshaft too. I just let it ride with no extra spacer in there like it was and it caused no problems. Does your engine have the ball bearing on the pto side? Mine didn't and I wondered it the early 70 Roadsters weren't quite that beefed up yet.

This one is BB, I did a full resto on a 1970 scrambler a few years back and even its little non lighted 3.5 was a BB supported crank:



I'm surprised yours isn't coming from Rupp, this bike is my 7th 1970 or later 10-12" wheeled rupp bike that was virtually complete with original engine and probably my 10th Rupp specific lighted HS40 and every motor had BB sidecover. 3 of which the silver 1970 motors. I figured it was probably the norm for a TC driven bike due to the extended shaft. But I found that not to be the case, out of 2 Fox angled motor bikes I had recently, a 2 speed trail tramp and a very strangely clutched from the factory spoiler (both needing the long shafts like the Rupp in order to hold the very large clutch assy's) were NOT BB sidecovers, they were all 1969/70 bikes too I believe.

I prefer the BB ones but dread when I get one that looks like its been opened up, Because usually that sidecover is damaged badly from someone not pulling the outer seal and taking the clip off, I am in need of one right now for at least on of my Rupp HS40's I have here :sad:
 

ELT

Active Member
#5
This one is BB, I did a full resto on a 1970 scrambler a few years back and even its little non lighted 3.5 was a BB supported crank:



I'm surprised yours isn't coming from Rupp, this bike is my 7th 1970 or later 10-12" wheeled rupp bike that was virtually complete with original engine and probably my 10th Rupp specific lighted HS40 and every motor had BB sidecover. 3 of which the silver 1970 motors. I figured it was probably the norm for a TC driven bike due to the extended shaft. But I found that not to be the case, out of 2 Fox angled motor bikes I had recently, a 2 speed trail tramp and a very strangely clutched from the factory spoiler (both needing the long shafts like the Rupp in order to hold the very large clutch assy's) were NOT BB sidecovers, they were all 1969/70 bikes too I believe.

I prefer the BB ones but dread when I get one that looks like its been opened up, Because usually that sidecover is damaged badly from someone not pulling the outer seal and taking the clip off, I am in need of one right now for at least on of my Rupp HS40's I have here :sad:
Thanks for the reply. The engine on my bike must have been replaced at some point early on. The frame was the early one with a gusset in the front. The engine was the early silver hs40 with the correct lighting coil. The engine was in great shape internally, low hours, runs great.
 

markus

Well-Known Member
#6
Thanks for the reply. The engine on my bike must have been replaced at some point early on. The frame was the early one with a gusset in the front. The engine was the early silver hs40 with the correct lighting coil. The engine was in great shape internally, low hours, runs great.

You have the numbers/build date off the motor by chance??? Now you have me curious:shrug: I dug out the shroud off one of those non BB extended crank motors and it was late '69 build date, the build date on my BB from the rupp is 0159 which is June 8th, and the crazy thing is the actual assy of this bike is june 18th........which as I write this I realize is TODAY :happybday:

maybe they decided to go with BB sidecovers in the 69/70 changeover. Does your bike have the street tires or the trials? I think that may have been another way to tell the earlier ones, possibly the air cleaner as well, at least if you go by the 1970 brochure. I wish I had recorded the numbers off the scrambler and The last '70 roadster I parted out.
 

markus

Well-Known Member
#7
some may have noticed I had put this in the for sale section late last week. Well there has not been any interest. Really wanted to avoid parting this bike out, normally I have no issues doing that but I have sort of grown attached to it and for whatever reason I wanted to ride it at least once :laugh: So today I started to assemble it.

This is pretty much were I was at:



I never really progressed as I have been on the hunt for nicer wheels, I was wanting to avoid re chroming only because I thought it might be too noticeable against the rest of bike. Cost wasn't so much an issue, I was ready to pay 300+ for a used set with light speckles just nothing correct has showm up.

So I went ahead and started to re assemble. I used new tubes, the front tire looks nice enough to pass for NOS condition wise, there rear tire has some wear but still a beautiful original so they go reused. I reassembled the brake assemblies and attached to the wheels as well as all the other parts. It was nice and easy I had every thing already cleaned and taken care of. Nothing has been super detailed out but all the parts are squeaky clean.



TC parts were the same, so it was simply matter of assy.


even the belt was a nice clean original Rupp belt :thumbsup:




I was even able to reuse the original cables, well the rear I had bought an original used off ebay as that was a missing part when I got the bike. I scrubbed the outer casings installed a new Oring on the brake light switch squirted some lube down into the cables etc... threw the belt cover on and it was ready to ride :thumbsup:

Off the table it went and down the road I go!!! it was already dark out, but while the bulb on this one is only a single beam its nice and bright. I must have rode it a solid half hour all through the hood, it runs really strong and really smooth....and really quick too :thumbsup: Its a lot better than I expected, I almost think the 10" 1970 bikes were a little quicker than the 12" bikes. which kinda bums me out in a way cause now I really gotta debate as to which bike is gonna have to go :doah:



All I need to do now is just some finishing touches, some clean up on the harness (loose tape) some zip ties in the right spots for the cables, I got a replacement reflector for the one missing I have to glue on, and I am playing a little with positioning the muffler, gotta take it back off and bend the mount bracket a little bit and re install the exhaust guards.
 

fistfullabar

Well-Known Member
#9
Off the table it went and down the road I go!!! it was already dark out, but while the bulb on this one is only a single beam its nice and bright. I must have rode it a solid half hour all through the hood, it runs really strong and really smooth....and really quick too :thumbsup: Its a lot better than I expected, I almost think the 10" 1970 bikes were a little quicker than the 12" bikes. which kinda bums me out in a way cause now I really gotta debate as to which bike is gonna have to go :doah:



All I need to do now is just some finishing touches, some clean up on the harness (loose tape) some zip ties in the right spots for the cables, I got a replacement reflector for the one missing I have to glue on, and I am playing a little with positioning the muffler, gotta take it back off and bend the mount bracket a little bit and re install the exhaust guards.[/QUOTE]
they look so good together keep um both:thumbsup::thumbsup:
 

markus

Well-Known Member
#10
So I finished buttoning it up today,and jut got back from a nice ride. readjusted the exhaust and installed the guards, straightened up the harness and added the zip ties where they needed to be, added footpegs and the missing reflector and a good dusting an fresh polishing. its officially DONE! :thumbsup:

 
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