Author Topic: Time to go racing.  (Read 7906 times)

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Offline Daggless888

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Time to go racing.
« on: February 15, 2019, 08:45:47 PM »
A donor 500 turned up on the doorstep a wee while ago just crying out for some tlc. The plan for this one is a gentleman’s racer.

Offline Daggless888

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Re: Time to go racing.
« Reply #1 on: February 15, 2019, 08:49:14 PM »
Was advertised as a genuine barn find!!!  Unfortunately the barn burnt down and landed on the bike. Only had to drive for 10 hours to pick it up. How lucky was I 🤩

Offline calj737

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Re: Time to go racing.
« Reply #2 on: February 16, 2019, 02:52:11 AM »
Easier to restore a barn find than a “weeds find”. The most expensive bikes to restore are given free  ;D
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'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline Daggless888

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Re: Time to go racing.
« Reply #3 on: February 16, 2019, 08:29:03 PM »
Easier to restore a barn find than a “weeds find”. The most expensive bikes to restore are given free  ;D

Cal, yours is looking pretty mint next to mine. I actually paid someone a small amount of money for the privilege of taking this one off their hands. I’m positive I heard snickering when I drove off.

Offline Daggless888

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Re: Time to go racing.
« Reply #4 on: February 16, 2019, 08:36:36 PM »
Dropped the motor out of the frame and started to take some covers off. Had to cut the front engine brackets as the bolts refused to move. I put the spanner on the back top bolt and it just disintegrated. Bolt is fused into the engine. 😱

Offline 754

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Re: Time to go racing.
« Reply #5 on: February 16, 2019, 09:38:36 PM »
Any water in motor? Seized ? Scored ?
 The motor mount holes are tapered and have clearance, so heating the case around them and tapping them may break them loose.
Maker of the WELDLESS 750 Frame Kit
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Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

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73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Daggless888

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Re: Time to go racing.
« Reply #6 on: February 23, 2019, 11:12:58 PM »
Thanks for the tip 754. Applied heat and with a tap bolt came out. Sent cases away for vapour blasting. Barrels are well buggered. No 4 piston is well seized. All rods and pistons won’t move. Have sourced another. Looks like it was full of water at some stage.

Offline Daggless888

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Re: Time to go racing.
« Reply #7 on: February 23, 2019, 11:19:32 PM »
Have modified the top case to take a benelli slipper. Just needed minor grinding to get it to fit. Moved the bottom nut to fit onto the Honda head.

Offline Daggless888

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Re: Time to go racing.
« Reply #8 on: February 23, 2019, 11:28:22 PM »
Top case mods

Offline Daggless888

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Re: Time to go racing.
« Reply #9 on: February 23, 2019, 11:30:17 PM »
More pics.

Offline Daggless888

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Re: Time to go racing.
« Reply #10 on: March 08, 2019, 12:36:51 AM »
Things are moving along slowly. Just waiting on bits to arrive. Whipped up a starter blank. I am removing the kick starter as a Davies Motorsport direct primary is going in. Do I need to blank off the kick start hole in the case?

Offline Daggless888

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Re: Time to go racing.
« Reply #11 on: June 06, 2021, 12:49:21 AM »
Went off grid for a while. Evaluated what was useable on the donor and decided a different direction was needed. Davies Motorsport no.36A now residing in the garage.

Offline calj737

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Re: Time to go racing.
« Reply #12 on: June 06, 2021, 06:09:24 AM »
Well that's pretty yummy!
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline 754

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Re: Time to go racing.
« Reply #13 on: June 06, 2021, 12:51:03 PM »
 NICE .. a CUSTOM Framed 500 ... dont see many of them..
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Daggless888

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Re: Time to go racing.
« Reply #14 on: June 06, 2021, 01:05:02 PM »
The only problem with heading down this pathway is that Davies have a full catalogue of shiny parts. So down the rabbit hole I went.

Offline calj737

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Re: Time to go racing.
« Reply #15 on: June 06, 2021, 02:01:43 PM »
Don’t they have a 6-speed, dry clutch product too? Or did a few years back. Mated with a Nova trans from memory...
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline 754

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Re: Time to go racing.
« Reply #16 on: June 06, 2021, 02:11:25 PM »
Reminds me if when I found a guy I knew a XS 650 for like 250 bux..
 A few years later he had 15 K into it. ,!
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Daggless888

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Re: Time to go racing.
« Reply #17 on: June 06, 2021, 02:36:32 PM »
Don’t they have a 6-speed, dry clutch product too? Or did a few years back. Mated with a Nova trans from memory...
Yes Cal nova still make the dry clutch for the 500 along with 6 speed. Unfortunately our rules don’t allow the clutch but we are allowed the 6 speed. Engine internals are completely open but have to keep a silhouette of the engine. NZ pre72 rules are mirrored on the uk CRMC rule book.

Offline Daggless888

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Re: Time to go racing.
« Reply #18 on: June 06, 2021, 02:40:50 PM »
Reminds me if when I found a guy I knew a XS 650 for like 250 bux..
 A few years later he had 15 K into it. ,!
As Cal mentioned earlier in the build the most expensive bikes to build are the ones given free! Wise words indeed.

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Re: Time to go racing.
« Reply #19 on: June 07, 2021, 02:20:38 PM »
Wow! Those Davies parts sure are pretty.  I have one of their fairings I am still planning to use on a project.
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Offline Daggless888

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Re: Time to go racing.
« Reply #20 on: June 08, 2021, 01:01:15 AM »
Wow! Those Davies parts sure are pretty.  I have one of their fairings I am still planning to use on a project.
They certainly are. Not only pretty but you can tell they are made for a purpose. Good guys to deal with as well.

Offline Daggless888

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Re: Time to go racing.
« Reply #21 on: June 10, 2021, 06:06:41 AM »
Making sure everything fits before final assembly. Need to fit some brackets for exhaust and modify steering damper bracket slightly. Easy stuff. A few holes to drill for cable routing and will make up a rear splash guard and tacho dash out of fibre glass. Made the 2 long engine bolts from some titanium bar. Want to keep the weight down as much as possible.

Offline Daggless888

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Re: Time to go racing.
« Reply #22 on: June 10, 2021, 06:28:08 AM »
Onto the rear splash guard. I decided to make this in fibreglass. So I made up a plug from an old front guard cut down to size as I liked the profile. I then screwed  it to a piece of wood and put a couple of layers of silver tape over it. I watched a heap of YouTube to become an instant expert on laying fibre glass. Polished it up with a heap of mould release thinking this is all looking good. Plug came out really nice. Then polished that up to give a reverse pattern so I would have a lovely flat surface on the side you will see. Laid the final piece and let’s just say it stuck really tightly in the plug. Bloody YouTube. A bit of swearing and poking with a flat screwdriver and eventually came out. The plug is no more but on a positive the guard came out pretty nice. A heap of rubbing down and a couple of coats of rattle can black and tah dah. The flat piece for the dash was just a flat sheet that I could cut to shape. Second photo is the plug after the I got the piece out! 

Offline Daggless888

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Re: Time to go racing.
« Reply #23 on: June 10, 2021, 06:33:45 AM »
Finished guard painted and attached.

Offline Daggless888

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Re: Time to go racing.
« Reply #24 on: June 11, 2021, 10:53:35 PM »
Attached fairing. Looks fast. Fairing is Davies classic model.