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Post by russpuss on Sept 13, 2020 22:52:38 GMT 1
Superb as usual ken
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2taol
Thrash Merchant
Posts: 378
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RD700LC
Sept 16, 2020 21:31:08 GMT 1
via mobile
yamark likes this
Post by 2taol on Sept 16, 2020 21:31:08 GMT 1
yes, nice result. something we could all do with ancient looms.
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RD700LC
Sept 18, 2020 10:16:15 GMT 1
Post by reggieperrin on Sept 18, 2020 10:16:15 GMT 1
Hi Mark, Everyone..
Loom and connector cleaning is a great thing to do but I just wanted to pass on a little warning. The connectors can be cleaned as much as you like on some older looms but you can still suffer with poor electrics. The wiring itself can suffer with 'negative wire corrosion', this corrodes and destroys the negative wires and massively increases their resistance. Some of the wires in your pictures are showing signs of it.
Please don't take my word for it, have a google and read. It's a shame to finish something and think all is well only to find a gremlin lurking inside..
Reg
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Post by steve63 on Oct 2, 2020 8:29:04 GMT 1
Hi Mark, Great build. As another ex sheetmetal worker I must say I'm impressed with your work. The air box especially is superb. There are sheetmetal workers working here who couldn't make that. Thinking about it there's probably only one who could but then we don't have a TIG plant that will weld aluminium so that wouldn't help I should have spent more time reading your thread and maybe the forum in general before cracking on with sorting out my wiring harness. I see you used white vinegar and salt to clean your connectors. I thought we had a bottle of white vinegar somewhere but I couldn't find it but settled on good old Sarsons. I received a right b@llocking off the Mrs. when she came home and asked if I knew where the vinegar was and I had to admit it was in the garage but wasn't any use as it was in a margarine tub mixed with salt There's a guy selling a complete TZ750 top end on Facebook Market place...just a thought. Looking forward to seeing it finished. Steve
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Post by yamark on Oct 4, 2020 19:20:34 GMT 1
Hi Mark, Great build. As another ex sheetmetal worker I must say I'm impressed with your work. The air box especially is superb. There are sheetmetal workers working here who couldn't make that. Thinking about it there's probably only one who could but then we don't have a TIG plant that will weld aluminium so that wouldn't help I should have spent more time reading your thread and maybe the forum in general before cracking on with sorting out my wiring harness. I see you used white vinegar and salt to clean your connectors. I thought we had a bottle of white vinegar somewhere but I couldn't find it but settled on good old Sarsons. I received a right b@llocking off the Mrs. when she came home and asked if I knew where the vinegar was and I had to admit it was in the garage but wasn't any use as it was in a margarine tub mixed with salt There's a guy selling a complete TZ750 top end on Facebook Market place...just a thought. Looking forward to seeing it finished. Steve Thanks Steve, praise indeed. I went through the wiring loom overhaul in more detail in my 550LC triple thread, page 20 I think, It's important to neutralise the vinegar with bicarb of soda.
Cheers, Mark
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Post by yamark on Oct 4, 2020 19:49:37 GMT 1
Thanks, Flames, Russpuss and 2 taol
Loads to catch up on chaps. My computer room has had a load of work done, so it's been hard to update. The other thing that has taken up a bit of time is extending my work bench in my workshop and restoring a Myford lathe.
Anyway, on with the bike, I took an inboard picture of the rear engine mount, also showing that the original has now been cut off.
SDC11944
Next, the new rear master cylinder bracket, fabricated and welded in place.
SDC11931
And the reservoir bracket in place
SDC11930
Now, one thing that I made a mistake on- the radiator brackets. I made the new brackets a fraction deeper (front to back). The rear of the brackets sat where the originals were. But the outer cylinders foul the brackets on the exhaust flange. While I can remove the front engine mounts and lift the engine to get the cylinders on and off, it's a lot of faffing about. So I reduced the depth of the 4 brackets so the cylinders would clear.
Left bracket
SDC11929
Right brackets
SDC11932
All the brackets need to be filed back to parallel and welds cleaned up.
Cheers, Mark
If I get time, I'll post a couple of pictures of the exhausts from Mick Abbey's workshop later tonight
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Post by sidney81 on Oct 4, 2020 19:59:19 GMT 1
Great work mark ππ
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Post by dusty350 on Oct 4, 2020 20:02:32 GMT 1
Hi mate Thought you'd eloped !! Good to see you back Dusty
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Post by yamark on Oct 5, 2020 19:45:26 GMT 1
The exhausts pictures from Mick Abbey. These images were as the exhausts were being constructed. The lower left was the problem to miss the chain. Mick produced exactly the look I was after
The right hand pair
image2
The left pair
image3
And a close up of the lower left pipe clearance to the chain
image0
I must admit, I do like 4 exhausts on a bike
Cheers, Mark
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Post by yamark on Oct 5, 2020 19:48:28 GMT 1
Hi mate Thought you'd eloped !! Good to see you back Dusty Thanks mate, no need for me to elope
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Post by Tobyjugs on Oct 5, 2020 19:57:39 GMT 1
He did a good job for missing the chain. You must be well chuffed with the outcome.
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Post by donkeychomp on Oct 5, 2020 21:35:23 GMT 1
Wow! Loving those zorsts Mark...
Alex
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Post by russpuss on Oct 5, 2020 22:03:51 GMT 1
Pfft, unless itβs rocking a multiple coloured unicorn look Iβm not interested anymore π¦ππ Love it really ken.
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2taol
Thrash Merchant
Posts: 378
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Post by 2taol on Oct 6, 2020 7:14:40 GMT 1
yes nice result indeed!!
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Post by mouse on Oct 6, 2020 7:33:33 GMT 1
Exhausts look great, what a job to get the routing right, i'm guessing no centre stand!!
Looking amazing
Mouse
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Post by midlifecrisisrd on Oct 6, 2020 13:43:17 GMT 1
Looking brilliant π
Steve
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Post by steve63 on Oct 6, 2020 14:09:20 GMT 1
Coming on great! Did you check out the TZ700 cylinders?
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Post by yamark on Oct 8, 2020 17:59:57 GMT 1
Thanks Tobyjugs, Alex, Russpuss, 2taol, Mouse and Steve.
Mouse, how did you guess there's no centre stand! .
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Post by yamark on Oct 8, 2020 18:06:16 GMT 1
Coming on great! Did you check out the TZ700 cylinders? Hi Steve, I didn't look at the TZ700 cylinders, as my LC cylinders have already been modified, and tuned to match the exhausts by Mick Abbey. A TZ700 would be interesting on the road
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RD700LC
Oct 8, 2020 22:55:38 GMT 1
via mobile
Post by steve63 on Oct 8, 2020 22:55:38 GMT 1
I wonder what power using half a TZ700 would produce? I remember an article about Keith Green and his TZ750. I think they stripped his engine and I think they said it was about 120hp which isn't a huge amount by modern standards but back then you're talking GS1000's with 85/90? And GT750's with maybe 60hp? Maybe 65/70. I was told the TZ350's running now are 80 ish. What are you thinking from this one of yours do you think?
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Post by yamark on Oct 12, 2020 18:06:27 GMT 1
I wonder what power using half a TZ700 would produce? I remember an article about Keith Green and his TZ750. I think they stripped his engine and I think they said it was about 120hp which isn't a huge amount by modern standards but back then you're talking GS1000's with 85/90? And GT750's with maybe 60hp? Maybe 65/70. I was told the TZ350's running now are 80 ish. What are you thinking from this one of yours do you think? Hi Steve, I like the challenge of building multiple cylinder LC's. I prefer a bigger engine capacity(smooth as well) than a highly tuned say 385cc or 425cc twin. The midrange on my triple 550LC is very strong, yet it has a big step of power in the power band. All at lower revs than a standard LC. I'm fairly sure the 700 will make 90-95 HP with the tuning work done by Mick Abbey. It also should be very smooth as it will have a 90 degree firing order.
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Post by yamark on Oct 12, 2020 18:24:13 GMT 1
Hi all, sorry I missed my usual Sunday time of posting - mad busy .
A couple of images of the bike mocked up, with the exhausts painted. The exhaust painting was done by Mick Abbey
SDC11904
SDC11905
So, I'm getting close to the part you lot will be more interested- the engine.
The new gearbox output shaft has been delayed months because of Covid, but it is due to be made very soon. I would say the five major milestones have been overcome.
Crankcases, cylinders and heads. Frame alterations Custom gearbox shaft Oil pump Exhausts
Cheers, Mark
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Post by steeley on Oct 12, 2020 18:35:26 GMT 1
Nice .
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Post by dusty350 on Oct 12, 2020 19:38:51 GMT 1
The pipes look awesome mate - really well engineered to fit perfectly Dusty
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Post by sidney81 on Oct 12, 2020 19:46:50 GMT 1
Cool as ,what a weapon this will be π
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Post by arrdy350 on Oct 12, 2020 20:27:19 GMT 1
The exhausts look greatππ Are you going to make it a standard LC colour or something different?
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Post by bezzer on Oct 12, 2020 22:33:17 GMT 1
Those R6 forks suit the stance of this build perfectly imho Mark, pipes were worth the wait too. Stunning.
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Post by cbm on Oct 13, 2020 5:22:40 GMT 1
Hi all, sorry I missed my usual Sunday time of posting - mad busy .
Hmmm guess I need to take some of the blame for that , the help was very much appreciated though mate. She's really starting to take shape now and those exhaust look the absolute 'kin dogs π
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Post by Denzil on Oct 13, 2020 12:27:57 GMT 1
Just amazing and the attention to detail is outstanding. I do hope when the time comes you will video the start up of this monster.
First class build Mark.
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Post by steve63 on Oct 13, 2020 12:54:18 GMT 1
I wonder what power using half a TZ700 would produce? I remember an article about Keith Green and his TZ750. I think they stripped his engine and I think they said it was about 120hp which isn't a huge amount by modern standards but back then you're talking GS1000's with 85/90? And GT750's with maybe 60hp? Maybe 65/70. I was told the TZ350's running now are 80 ish. What are you thinking from this one of yours do you think? Hi Steve, I like the challenge of building multiple cylinder LC's. I prefer a bigger engine capacity(smooth as well) than a highly tuned say 385cc or 425cc twin. The midrange on my triple 550LC is very strong, yet it has a big step of power in the power band. All at lower revs than a standard LC. I'm fairly sure the 700 will make 90-95 HP with the tuning work done by Mick Abbey. It also should be very smooth as it will have a 90 degree firing order.
I had a KH500 which sounded great and had a great engine but I sold it to buy a brand new LC in '82. The LC was a revelation in every way, brakes, suspension, reliability and speed. I had a half backed plan to build a 550 triple in the early 90's. It got as far as cutting two cylinder heads and welding them (but not completely) and cutting a slice off a cylinder then welding a plate on, then stopped. I still have the head and cylinders. A few things then happened, kids, lost jobs, new jobs blah, blah. Then lack of drive and laziness on my part. I guess it would have been easier and harder to do it in 1993/4 than now; Easier as in the expertise is around now but you obviously have to find it and harder now as in the bits are scarcer and more expensive now. I'll just leave it to the experts such as yourself and just admire from a distance
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