Honda-SOHC
SOHC.co.uk Forums => Project Board => Topic started by: SteveCR7 on February 13, 2019, 07:46:44 PM
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I started restoring the CR recently and plan to get it running before stripping it down. Have so far got the electrics working (sparks still to be verified), spare set of carbs sorted, oil drained (no nasties in the oil), oil tank and sump off for clean, cam cover off and top end looks good.
I have not made much progress in the last couple of weeks as I have been playing with diy zinc plating and softening inlet rubbers with wintergreen oil and alcohol (looking good so far). A few pictures from back in the day and how she looks now. I will keep you posted.
Steve
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She was a bit of a looker back in the day. What a fantastic project that is, the only way it could be any better would be for it to have a Z1 engine. That comment's going to get me in the s**t. ;D
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Well, it was a bit of an impulse buy, I wasn't looking for one but it turned up in my local bike shop Bikewise in leigh on sea and having had a tuned SOHC before, I traded a mint GS1000 Suzuki. For a while I thought what have I done, but it soon grew on me.
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Looks great - so you've had it for some time then, just not running? Or just picked it up recently?
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I have owned it since 1982 and ran it until 1990, when a house move liberated some funds and I brought a new vfr750, which meant the CR took a back seat. I have been wanting to sort it for a good few years but time and funds were limited. Kids have moved out now so it was time. It was also the mrs idea to get a big shed to work on it 😃
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Take note Honda, Rickman took the trouble to ensure you could get the head off whilst the engine is in the frame. ;)
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Looks great , that would have been my dream bike in the 70's, nice to see it being resurrected.
Cheers
Dennis
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Still is my dream bike. Had one in 77 with a Z1B engine, superb. Would love another but they are out of my price range now.
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Did a bit more yesterday, got the oil tank, filter, sump and hoses cleaned and ready to go back on. Still got to get the pump off and primed with fresh oil.
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Also checked out the coils, one has a broken HT lead at the coil end, so swapped a spare one over. The primary circuit is fine about 4.6ohms, but no reading on the secondary. I don't know if I am doing something wrong or if all 4 are duff.
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My experiment to soften carb inlet rubbers was a huge success. Using a 3:1 mix of surgical spirit and wintergreen oil for 8 to 10 days turned them from rock hard to very pliable. The carb side softened the quickest being thinner rubber so after about 6 days I reduced the liquid level so only the thicker parts of the rubber were submerged. I will have to see if they harden as the weeks go on. The video shows how soft they are.
https://youtu.be/r0GooiUYUAU
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That’s going to be a fine machine when done, a closer fitting front mudguard would be the only change I’d make, but that’s just my opinion, here’s how close I got mine btw.[attachimg=1]
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Yes mudguard could be better, but that’s a way down the road yet
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Is anybody planning to go to the festival of 1000 bikes at Mallory in July? I went last year and will be there again this year.... There were some great looking 750's there, not sure if they were replica CR's or original, I wouldn't be able to tell... but they looked great!. These old sohc race bikes look and sound great on track 8). Its a great place to showcase these beauties, the paddock is open to the public.
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I'm planning on going this year as missed it last year.
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Good stuff.. if you see an old K4 pootling round at a steady pace that’ll be me :D
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Made some good progress today, got the oil pump off, primed with fresh oil and refitted along with the sump, oil filter and oil tank and filled with oil. Also got the carbs finally assembled ready to go back on.
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Got the coils sorted and connected up and lo and behold I HAVE SPARKS :-)
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Got some exhaust gaskets coming in the week so just need to get the exhaust fitted, need some carb clamps and then get those fitted and I think I will be ready to give it a kick, hopefully next weekend if time permits.
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Bit more done today, got rear calliper and m/cyl off. Couple of bolts didn’t want to play ball but got them off with no damage. Once I got the seized brake linkage off I found the m/cyl isn’t seized!!
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Sneaked a couple of hours tonight. Pumped some fresh fluid through the rear master cylinder, still amazed it wasn’t seized. Got the new plugs in, coils connected and fitted the exhaust stubs and exhaust. The exhaust fits perfectly and the rest mount lines up exactly with the frame mounting. Just got to fit the carbs and it’s ready to go, but unfortunately it won’t be this weekend as got family stuff to do.[attach=1]
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I sold my Rickman honda a few years back, but have recently just sold my Rickman z1r, awesome bikes, have to say they are great with the kawasaki engine especially the 1000cc one(https://uploads.tapatalk-cdn.com/20190327/985002858a6bb0a729668a3cee77e372.jpg)
Sent from my SM-G930F using Tapatalk
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A bit of a delay due to other commitments but after 29 years
https://youtu.be/UP3LfTL2bdI
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Things have moved on a bit.
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Hi all,
I am working on fitting a Lockheed caliper to standard Honda forks on a Rickman. I have swapped K7 forks for F2 forks (SOHC) as the 2 bolt fixing would be easier to make a mounting plate for. I have a K7 disc which needs to be spaced out from the hub, but F2 discs have a much larger offset. Can anybody tell me the offset from the disc mounting face to the inner face of the disc at the pad face. The K7 disc is around 14mm, see attached photo. Also can anybody confirm the disc mounting holes have the same PCD on K7 and F2.
Thanks Steve
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Not totally clear now I read it back, I need the offset for the F2 disc.
Cheers Steve
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Anybody? Thanks Steve
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Once I pursuade the discs to come off my front wheel..I should be able to measure them. Might be a week or so before I get it done...but I can get it done.
Need to get them off to give the disc centres a clean up and paint
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Hope this isn't far too late to be helpful...but...
With the disc on a flat surface, it's 21mm from the inside of the inner mount face to the inside of the disc's outer face. 26mm on mine to the outside, and a minimum disc thickness of 4mm before they go in the bin.
The discs will be off for a bit while I clean, prep and paint the inner sections...so shout if you need more measurements.
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Thanks sumpmagnet, defo not too late. If I have read right, that’s the number I was hoping for. The K7 disc has 14mm offset and I need to space the K7 disc out from the hub by 7mm. Now I am no maths genius but 14 + 7 = 21, so the F2 disc should work with no spacer, as long as the disc bolt holes match. I have been playing with the mounting plate this morning and apart from tidying the shape I have sorted it.
Cheers mate
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I thought K had 6 bolts and F 5
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Just been looking on eBay and F2 disc has 5 mounting bolts, K7 has 6 so looks like K7 disc and a spacer.