Farmer_John
New Member
Been a Seeley fan since reading in some long defunct mag about the Seeley Condor. May have been 12-13...
Seeley 519 CB750
- Thread starter surffly
- Start date
Farmer_John
New Member
surffly said:
In many cases, perimeter before perimeter was perimeter...
surffly
Over 1,000 Posts
Well since I don’t have a garage of my own to work out of I am forced to do small jobs at my apartment and plan the full garage time differently then I normally would.
Figured the best place to start was to fill in one of the missing pieces of the project, the rear axle adjustors. Interestingly enough Seeley used a similar adjustor type on most of his bikes.
Here is what I have to work with right now.
The axle parts that are pictured is everything that I have right now. Everything, save the axle, is alloy and very light. Can see that it seems to use the stock Honda drum stay.
The number 19 is stamped into the arm indicating it is original to the frame.
The design that was used is very similar to some of the Ducatis of the time. The swing arm uses round tubing that has an outer diameter of 35mm. The adjustor would ride on the inside of the tube and have a cap to pass a threaded rod used to adjust the axle position. This should be a simple enough piece to make on a lathe. Will try and draw something up one day at work with the needed dimensions.
When the axle is installed in the swing arm you can see how the adjuster would ride inside the tubes.
Was poking around on the good old interwebs looking for better pictures of the Ducati adjustor types because there are almost no pictures of the Seeley ones and found some images of the adjustors that are used on a Ducati Sport Classic.
Those look like they are a cast part, but the same effect can be made out of billet or any other good block of alloy.
If you look really close at the picture I posted of the Seeley “kit” you can see the adjustors, it is the only picture of the parts I could find.
Did some quick poking around and found some 30mm bar stock that might work well for this.
Figured the best place to start was to fill in one of the missing pieces of the project, the rear axle adjustors. Interestingly enough Seeley used a similar adjustor type on most of his bikes.
Here is what I have to work with right now.
The axle parts that are pictured is everything that I have right now. Everything, save the axle, is alloy and very light. Can see that it seems to use the stock Honda drum stay.
The number 19 is stamped into the arm indicating it is original to the frame.
The design that was used is very similar to some of the Ducatis of the time. The swing arm uses round tubing that has an outer diameter of 35mm. The adjustor would ride on the inside of the tube and have a cap to pass a threaded rod used to adjust the axle position. This should be a simple enough piece to make on a lathe. Will try and draw something up one day at work with the needed dimensions.
When the axle is installed in the swing arm you can see how the adjuster would ride inside the tubes.
Was poking around on the good old interwebs looking for better pictures of the Ducati adjustor types because there are almost no pictures of the Seeley ones and found some images of the adjustors that are used on a Ducati Sport Classic.
Those look like they are a cast part, but the same effect can be made out of billet or any other good block of alloy.
If you look really close at the picture I posted of the Seeley “kit” you can see the adjustors, it is the only picture of the parts I could find.
Did some quick poking around and found some 30mm bar stock that might work well for this.
JustinLonghorn
No Purple Hearts, No Blue Ribbons
I'm in for the ride.
brad black
Been Around the Block
later bevels and pantahs have the seeley style adjusters.
http://thumbs4.ebaystatic.com/d/l225/m/mh4_wvSRQhgD7woAT0fCIzg.jpg
http://thumbs4.ebaystatic.com/d/l225/m/mh4_wvSRQhgD7woAT0fCIzg.jpg
surffly
Over 1,000 Posts
Well some forward progress has happened. I was able to source a suitable parts bike to work with. I want to thank those that offered some very good deals on some bikes to help me out. I am especially looking at you Mr ATMCycles, hope I didn’t burn a bridge by not taking you up on your offer. Ultimately the parts bike came from a local person I met.
As with anything things changed. I had this super naïve idea in my head of finding a bike with near perfect mechanicals but it’s time in storage had taken its toll on the body work. Maybe something that was super ugly because a rat had eaten the seat. My delusion was super specific, and interesting. But at the end of the day reality set in.
I have often said “if it says Honda on it, then it is not rare”. I still stand by that. Sure in recent times a good base is harder to come by, but bikes are out there. Some only use CL or the web to find a bike, but the fact is that if you venture to clubs, or other enthusiasts stuff can be found.
This was not the cheapest CB750 I have bought, that record goes to a 71 that I bought will drunk and playing on my phone.
The bike I bought for the Seeley build came from a local owner with vintage interests. Funny that he lives about 5 miles from my office. When I was still daydreaming about finding the perfect parts bike I passed on this bike because of the oxidation on the cases and some missing parts. Stupid, I know.
Well I wised up and one wonderfully winter evening I helped to push this heap out of a garage and loaded her up. There is nothing like standing on the side of the road when it is -10f after dark pushing a CB750 into a minivan.
Got the bike back to my friends shop space. I could see in his eyes that he was less then trilled at so much ugly taking up space. I had kind of hyped the Seeley build up to him as this amazingly rare bike that would just take the minimal amount of space, and also not be an eye sore.
Bike is a 1974 and this will work just fine. Actually it is almost perfect as the Seeley is a 1975 so the numbers will kinda, sorta be correct. As if there is any correct for this bike.
Motor turns over. Oil is clean. Came with a very clean set of stock OEM carbs and a nice set of side covers. Overall it will work just fine. I cant see it being economical for someone to want to restore it back to its original glory. I view it as saving it from a fate of being hacked up for some hipster “café racer” project. This bike does have a clear title, unsure if I will be able to title the bike as a 1975 Seeley yet so a Honda title might come in handy.
Most of the plan remains the same though. I will spend a weekend swapping the stock Honda parts from my parts bike to the Seeley frame. Will use the left over unneeded parts to barter for the ones I do need. So if there is something you see that I will not use that you can use please feel free to reach out.
Don’t plan on running the stock forks as I want to upgrade to a set of GL1000 forks, but will use them for now as a mock up tool. Same with the wheels, I will run the lesters. I just need to not have a pile of Honda stuff in my friend’s garage, so it must stay a roller. I need to find out if the Seeley frame uses the stock CB750 Honda steering head bearings. If that is the case I need to send the guys at allballs a few of my dollars.
As with anything things changed. I had this super naïve idea in my head of finding a bike with near perfect mechanicals but it’s time in storage had taken its toll on the body work. Maybe something that was super ugly because a rat had eaten the seat. My delusion was super specific, and interesting. But at the end of the day reality set in.
I have often said “if it says Honda on it, then it is not rare”. I still stand by that. Sure in recent times a good base is harder to come by, but bikes are out there. Some only use CL or the web to find a bike, but the fact is that if you venture to clubs, or other enthusiasts stuff can be found.
This was not the cheapest CB750 I have bought, that record goes to a 71 that I bought will drunk and playing on my phone.
The bike I bought for the Seeley build came from a local owner with vintage interests. Funny that he lives about 5 miles from my office. When I was still daydreaming about finding the perfect parts bike I passed on this bike because of the oxidation on the cases and some missing parts. Stupid, I know.
Well I wised up and one wonderfully winter evening I helped to push this heap out of a garage and loaded her up. There is nothing like standing on the side of the road when it is -10f after dark pushing a CB750 into a minivan.
Got the bike back to my friends shop space. I could see in his eyes that he was less then trilled at so much ugly taking up space. I had kind of hyped the Seeley build up to him as this amazingly rare bike that would just take the minimal amount of space, and also not be an eye sore.
Bike is a 1974 and this will work just fine. Actually it is almost perfect as the Seeley is a 1975 so the numbers will kinda, sorta be correct. As if there is any correct for this bike.
Motor turns over. Oil is clean. Came with a very clean set of stock OEM carbs and a nice set of side covers. Overall it will work just fine. I cant see it being economical for someone to want to restore it back to its original glory. I view it as saving it from a fate of being hacked up for some hipster “café racer” project. This bike does have a clear title, unsure if I will be able to title the bike as a 1975 Seeley yet so a Honda title might come in handy.
Most of the plan remains the same though. I will spend a weekend swapping the stock Honda parts from my parts bike to the Seeley frame. Will use the left over unneeded parts to barter for the ones I do need. So if there is something you see that I will not use that you can use please feel free to reach out.
Don’t plan on running the stock forks as I want to upgrade to a set of GL1000 forks, but will use them for now as a mock up tool. Same with the wheels, I will run the lesters. I just need to not have a pile of Honda stuff in my friend’s garage, so it must stay a roller. I need to find out if the Seeley frame uses the stock CB750 Honda steering head bearings. If that is the case I need to send the guys at allballs a few of my dollars.
surffly
Over 1,000 Posts
So I had a day to myself in the shop. Got the parts from the parts bike swapped onto the Seeley frame.
Concept was simple. Swap the junk from the one bike onto the other. The idea was that it could be done in a day. Was lucky to have the help of Dog for this.
Seat off, and looking at some fugly bars. Shame that the tank is so faded. TON of junk and bad gas inside.
Felt like a hipster with his first bike, just ripping the thing apart.
I really hate pulling motors from stock frames, without a saw.
Wheels on before putting the motor in.
Rear motor mounts are stamped 519 RH and LH. Neat touch.
SO much easier to get the motor back in a frame like this.
And boom goes the dynamite.
At first I was really down for the patina look. Thought it would be fun to have an “as found” race bike on the road. Freely admit that this is a bitsa.
Problem is that now that I see the bike as a whole I really fear that the awesome is massively out weighted by the ugly. Yes the bars are going to go, and not helping the look. And sure that seat is bad, but I assume once I make a deal to rent it out for soccer matches it will pay off.
Either way I am thrilled to see the Seeley on a set of wheels with a motor again.
Concept was simple. Swap the junk from the one bike onto the other. The idea was that it could be done in a day. Was lucky to have the help of Dog for this.
Seat off, and looking at some fugly bars. Shame that the tank is so faded. TON of junk and bad gas inside.
Felt like a hipster with his first bike, just ripping the thing apart.
I really hate pulling motors from stock frames, without a saw.
Wheels on before putting the motor in.
Rear motor mounts are stamped 519 RH and LH. Neat touch.
SO much easier to get the motor back in a frame like this.
And boom goes the dynamite.
At first I was really down for the patina look. Thought it would be fun to have an “as found” race bike on the road. Freely admit that this is a bitsa.
Problem is that now that I see the bike as a whole I really fear that the awesome is massively out weighted by the ugly. Yes the bars are going to go, and not helping the look. And sure that seat is bad, but I assume once I make a deal to rent it out for soccer matches it will pay off.
Either way I am thrilled to see the Seeley on a set of wheels with a motor again.
surffly
Over 1,000 Posts
I am having a little trouble with the steering head bearings on my Seeley frame. I had my fingers crossed that the frame shared the same size bearing as the stock Honda frame, but it does not.
My frame did have Timken bearing races installed. The part numbers on those races are 07210X and 07196. Was doing some digging and found that the tapped bearings that fit the Honda stem are numbers 07100 and L45449. Unsure if I just need to buy those two parts and be done? Was getting some conflicting information, almost to the point of saying that a Timken part can have the same number but different dimensions? I am kind of lost here.
The extra dumb question that I should know the answer to is, are all the tapers the same? Meaning if the ODs are correct, will any roller fit any race? So if I get the right rollers to fit the stems, then they should fit the races in my Seeley frame?
Some details on the parts I have.
07210X
50.08mm OD
5.1mm large flat of taper
2.2mm small flat of taper
12.7mm “deep
07196
50.01mm OD
4.4mm larger flat of taper
2.2mm smaller flat of taper
9.5mm “deep”
Stock top race.
48.6mm OD
7.6mm “deep”
Stock bottom race was not being nice, and I didn’t remove it to measure.
My frame did have Timken bearing races installed. The part numbers on those races are 07210X and 07196. Was doing some digging and found that the tapped bearings that fit the Honda stem are numbers 07100 and L45449. Unsure if I just need to buy those two parts and be done? Was getting some conflicting information, almost to the point of saying that a Timken part can have the same number but different dimensions? I am kind of lost here.
The extra dumb question that I should know the answer to is, are all the tapers the same? Meaning if the ODs are correct, will any roller fit any race? So if I get the right rollers to fit the stems, then they should fit the races in my Seeley frame?
Some details on the parts I have.
07210X
50.08mm OD
5.1mm large flat of taper
2.2mm small flat of taper
12.7mm “deep
07196
50.01mm OD
4.4mm larger flat of taper
2.2mm smaller flat of taper
9.5mm “deep”
Stock top race.
48.6mm OD
7.6mm “deep”
Stock bottom race was not being nice, and I didn’t remove it to measure.
surffly
Over 1,000 Posts
Did some digging around today and found some info about the bearings.
Seems that the cone tapered bearing that is normally used on the stock Honda CB750 works with the race on the Seeley.
Makes sense.
Now off to find some bearings.
Might just buy two sets. One to use on the CB750 forks that I have right now. And another to use with the GL1000 front end I will eventually run on the bike.
I think that the GL and CB use the same bearing. But could be wrong.
Seems that the cone tapered bearing that is normally used on the stock Honda CB750 works with the race on the Seeley.
Makes sense.
Now off to find some bearings.
Might just buy two sets. One to use on the CB750 forks that I have right now. And another to use with the GL1000 front end I will eventually run on the bike.
I think that the GL and CB use the same bearing. But could be wrong.
surffly
Over 1,000 Posts
Just spoke with AllBalls. I gave them the part numbers for the races that fit the frame. They told me that they do not have anything that would match up to them. Kind of find that hard to believe, but I guess it is what it is.
Going to order one 07100 and one L45449 and see what it takes to get them on the stock Honda stem.
Oh the joys or rare bikes....
Going to order one 07100 and one L45449 and see what it takes to get them on the stock Honda stem.
Oh the joys or rare bikes....
to answer most all taperd bearings are the same angle,there are speacial ones for special apps with more angle but i have only seen them in weird stuff like farm machinery
you can always as a last resort to grind some material off ID of a cone or OD of a cup
of course making a sleeve or turning a stem to change size is pretty simple and the easiest way to go ifin you kant find the perf fit
you can always as a last resort to grind some material off ID of a cone or OD of a cup
of course making a sleeve or turning a stem to change size is pretty simple and the easiest way to go ifin you kant find the perf fit
surffly
Over 1,000 Posts
More details. The bearing races I have are “new” and have been cleanly removed from the Seeley frame.
07210X
OD is 50.8mm or about 2 inches. I assume this is a 2 inch bearing race.
07196
OD is 50.02mm or about 1.97 inches. I assume this is a metric 50mm OD race
Strange that one seems to be standard and the other is metric.
For mock up I had thought I could just remove the OEM Honda ball bearing set up and use it temperately until I ordered a tapered bearing kit. I realized that I was wrong when I removed the top bearing race from the stock Honda frame.
I found that race to be too small for the Seeley frame.
49.5mm
From my understanding the stem on the OEM Honda uses one bearing with a 26mm ID and another with a 30mm ID. So the search is on to find bearings that will mount to the stock Honda stem, but fit inside the races I have in the Seeley frame.
07210X
OD is 50.8mm or about 2 inches. I assume this is a 2 inch bearing race.
07196
OD is 50.02mm or about 1.97 inches. I assume this is a metric 50mm OD race
Strange that one seems to be standard and the other is metric.
For mock up I had thought I could just remove the OEM Honda ball bearing set up and use it temperately until I ordered a tapered bearing kit. I realized that I was wrong when I removed the top bearing race from the stock Honda frame.
I found that race to be too small for the Seeley frame.
49.5mm
From my understanding the stem on the OEM Honda uses one bearing with a 26mm ID and another with a 30mm ID. So the search is on to find bearings that will mount to the stock Honda stem, but fit inside the races I have in the Seeley frame.
